./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/36-apron_21-traces-cluster-based_true.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/goblint-regression/36-apron_21-traces-cluster-based_true.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/36-apron_21-traces-cluster-based_true.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 [2024-06-28 01:06:19,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:06:19,263 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:06:19,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:06:19,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:06:19,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:06:19,291 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:06:19,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:06:19,292 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:06:19,295 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:06:19,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:06:19,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:06:19,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:06:19,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:06:19,298 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:06:19,298 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:06:19,298 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:06:19,299 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:06:19,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:06:19,299 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:06:19,299 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:06:19,300 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:06:19,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:06:19,300 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:06:19,300 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:06:19,301 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:06:19,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:06:19,301 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:06:19,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:06:19,302 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:06:19,303 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:06:19,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:06:19,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:06:19,303 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:06:19,303 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:06:19,304 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:06:19,304 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:06:19,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:06:19,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:06:19,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:06:19,305 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:06:19,305 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:06:19,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:06:19,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:06:19,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:06:19,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:06:19,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:06:19,561 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:06:19,562 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:06:19,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-06-28 01:06:20,646 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:06:20,834 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:06:20,837 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-06-28 01:06:20,861 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f468e6874/f442af4d69d94de3988dfac6ff9ea927/FLAG4d3bff568 [2024-06-28 01:06:20,883 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f468e6874/f442af4d69d94de3988dfac6ff9ea927 [2024-06-28 01:06:20,886 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:06:20,887 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:06:20,889 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/36-apron_21-traces-cluster-based_true.yml/witness.yml [2024-06-28 01:06:21,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:06:21,019 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:06:21,020 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:06:21,020 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:06:21,024 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:06:21,025 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:06:20" (1/2) ... [2024-06-28 01:06:21,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e20a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:21, skipping insertion in model container [2024-06-28 01:06:21,026 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:06:20" (1/2) ... [2024-06-28 01:06:21,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10600da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:21, skipping insertion in model container [2024-06-28 01:06:21,028 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:06:21" (2/2) ... [2024-06-28 01:06:21,028 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e20a2b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21, skipping insertion in model container [2024-06-28 01:06:21,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:06:21" (2/2) ... [2024-06-28 01:06:21,029 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:06:21,068 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:06:21,069 INFO L97 edCorrectnessWitness]: Location invariant before [L728-L728] (((! multithreaded || -1016 <= h) && (! multithreaded || (A_locked || (-1016 <= h && -999 <= g)))) && (! multithreaded || (B_locked || (-999 <= g && -999 <= h)))) && (! multithreaded || -999 <= g) [2024-06-28 01:06:21,069 INFO L97 edCorrectnessWitness]: Location invariant before [L729-L729] (((! multithreaded || -1016 <= h) && (! multithreaded || (A_locked || (-1016 <= h && -999 <= g)))) && (! multithreaded || (B_locked || (-999 <= g && -999 <= h)))) && (! multithreaded || -999 <= g) [2024-06-28 01:06:21,069 INFO L97 edCorrectnessWitness]: Location invariant before [L730-L730] (((! multithreaded || -1016 <= h) && (! multithreaded || (A_locked || (-1016 <= h && -999 <= g)))) && (! multithreaded || (B_locked || (-999 <= g && -999 <= h)))) && (! multithreaded || -999 <= g) [2024-06-28 01:06:21,069 INFO L103 edCorrectnessWitness]: ghost_variable B_locked = 0 [2024-06-28 01:06:21,070 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:06:21,070 INFO L103 edCorrectnessWitness]: ghost_variable A_locked = 0 [2024-06-28 01:06:21,070 INFO L106 edCorrectnessWitness]: ghost_update [L718-L718] A_locked = 0; [2024-06-28 01:06:21,071 INFO L106 edCorrectnessWitness]: ghost_update [L697-L697] B_locked = 0; [2024-06-28 01:06:21,071 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] B_locked = 1; [2024-06-28 01:06:21,071 INFO L106 edCorrectnessWitness]: ghost_update [L690-L690] A_locked = 1; [2024-06-28 01:06:21,071 INFO L106 edCorrectnessWitness]: ghost_update [L714-L714] B_locked = 1; [2024-06-28 01:06:21,071 INFO L106 edCorrectnessWitness]: ghost_update [L730-L730] A_locked = 1; [2024-06-28 01:06:21,071 INFO L106 edCorrectnessWitness]: ghost_update [L704-L704] A_locked = 1; [2024-06-28 01:06:21,071 INFO L106 edCorrectnessWitness]: ghost_update [L715-L715] A_locked = 1; [2024-06-28 01:06:21,071 INFO L106 edCorrectnessWitness]: ghost_update [L707-L707] A_locked = 0; [2024-06-28 01:06:21,072 INFO L106 edCorrectnessWitness]: ghost_update [L735-L735] B_locked = 0; [2024-06-28 01:06:21,072 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] A_locked = 0; [2024-06-28 01:06:21,072 INFO L106 edCorrectnessWitness]: ghost_update [L727-L727] multithreaded = 1; [2024-06-28 01:06:21,072 INFO L106 edCorrectnessWitness]: ghost_update [L736-L736] A_locked = 0; [2024-06-28 01:06:21,072 INFO L106 edCorrectnessWitness]: ghost_update [L733-L733] B_locked = 1; [2024-06-28 01:06:21,072 INFO L106 edCorrectnessWitness]: ghost_update [L719-L719] B_locked = 0; [2024-06-28 01:06:21,073 INFO L106 edCorrectnessWitness]: ghost_update [L696-L696] A_locked = 0; [2024-06-28 01:06:21,073 INFO L106 edCorrectnessWitness]: ghost_update [L694-L694] A_locked = 1; [2024-06-28 01:06:21,116 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:06:21,263 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-06-28 01:06:21,422 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:06:21,433 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:06:21,465 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:06:21,542 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:06:21,574 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:06:21,574 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21 WrapperNode [2024-06-28 01:06:21,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:06:21,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:06:21,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:06:21,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:06:21,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,609 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,637 INFO L138 Inliner]: procedures = 165, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 155 [2024-06-28 01:06:21,637 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:06:21,638 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:06:21,638 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:06:21,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:06:21,647 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,659 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,684 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-06-28 01:06:21,684 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,685 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,691 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,698 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,703 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,705 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:06:21,707 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:06:21,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:06:21,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:06:21,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:06:21,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:06:21,744 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) [2024-06-28 01:06:21,763 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 [2024-06-28 01:06:21,775 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-06-28 01:06:21,776 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-06-28 01:06:21,776 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-28 01:06:21,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:06:21,776 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-06-28 01:06:21,776 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-06-28 01:06:21,776 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-28 01:06:21,776 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-28 01:06:21,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:06:21,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:06:21,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-28 01:06:21,777 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-28 01:06:21,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:06:21,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:06:21,778 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:06:21,880 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:06:21,882 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:06:22,136 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:06:22,138 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:06:22,270 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:06:22,275 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:06:22,275 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:06:22 BoogieIcfgContainer [2024-06-28 01:06:22,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:06:22,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:06:22,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:06:22,281 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:06:22,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:06:20" (1/4) ... [2024-06-28 01:06:22,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3f6af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:06:22, skipping insertion in model container [2024-06-28 01:06:22,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:06:21" (2/4) ... [2024-06-28 01:06:22,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3f6af1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:06:22, skipping insertion in model container [2024-06-28 01:06:22,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (3/4) ... [2024-06-28 01:06:22,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3f6af1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:06:22, skipping insertion in model container [2024-06-28 01:06:22,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:06:22" (4/4) ... [2024-06-28 01:06:22,285 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2024-06-28 01:06:22,298 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:06:22,299 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-06-28 01:06:22,299 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:06:22,351 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:06:22,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 75 transitions, 162 flow [2024-06-28 01:06:22,421 INFO L124 PetriNetUnfolderBase]: 5/72 cut-off events. [2024-06-28 01:06:22,422 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:06:22,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 5/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2024-06-28 01:06:22,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 75 transitions, 162 flow [2024-06-28 01:06:22,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 72 transitions, 153 flow [2024-06-28 01:06:22,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:06:22,444 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;@37255725, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:06:22,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-06-28 01:06:22,448 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:06:22,448 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:06:22,448 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:06:22,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:22,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:06:22,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-28 01:06:22,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:22,481 INFO L85 PathProgramCache]: Analyzing trace with hash 412018404, now seen corresponding path program 1 times [2024-06-28 01:06:22,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:22,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738549440] [2024-06-28 01:06:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:22,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:22,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:22,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:22,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738549440] [2024-06-28 01:06:22,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738549440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:22,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:22,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:06:22,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029427287] [2024-06-28 01:06:22,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:22,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:06:22,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:22,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:06:22,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:06:22,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 75 [2024-06-28 01:06:22,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2024-06-28 01:06:22,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:22,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 75 [2024-06-28 01:06:22,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:25,537 INFO L124 PetriNetUnfolderBase]: 23106/37549 cut-off events. [2024-06-28 01:06:25,542 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-06-28 01:06:25,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69956 conditions, 37549 events. 23106/37549 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 299048 event pairs, 9120 based on Foata normal form. 4044/40504 useless extension candidates. Maximal degree in co-relation 69944. Up to 19929 conditions per place. [2024-06-28 01:06:25,725 INFO L140 encePairwiseOnDemand]: 66/75 looper letters, 74 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2024-06-28 01:06:25,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 99 transitions, 365 flow [2024-06-28 01:06:25,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:06:25,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:06:25,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-06-28 01:06:25,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-06-28 01:06:25,737 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 153 flow. Second operand 3 states and 165 transitions. [2024-06-28 01:06:25,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 99 transitions, 365 flow [2024-06-28 01:06:25,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 360 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:06:25,747 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 154 flow [2024-06-28 01:06:25,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2024-06-28 01:06:25,752 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2024-06-28 01:06:25,753 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 154 flow [2024-06-28 01:06:25,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2024-06-28 01:06:25,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:25,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:25,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:06:25,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-28 01:06:25,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:25,754 INFO L85 PathProgramCache]: Analyzing trace with hash -595804576, now seen corresponding path program 1 times [2024-06-28 01:06:25,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:25,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170165273] [2024-06-28 01:06:25,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:25,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:25,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:25,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:25,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170165273] [2024-06-28 01:06:25,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170165273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:25,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:25,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:06:25,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107137775] [2024-06-28 01:06:25,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:25,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:06:25,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:25,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:06:25,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:06:25,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 75 [2024-06-28 01:06:25,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 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) [2024-06-28 01:06:25,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:25,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 75 [2024-06-28 01:06:25,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:30,007 INFO L124 PetriNetUnfolderBase]: 40327/66308 cut-off events. [2024-06-28 01:06:30,007 INFO L125 PetriNetUnfolderBase]: For 1302/1302 co-relation queries the response was YES. [2024-06-28 01:06:30,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125947 conditions, 66308 events. 40327/66308 cut-off events. For 1302/1302 co-relation queries the response was YES. Maximal size of possible extension queue 1943. Compared 573922 event pairs, 7385 based on Foata normal form. 355/64015 useless extension candidates. Maximal degree in co-relation 125934. Up to 19644 conditions per place. [2024-06-28 01:06:30,313 INFO L140 encePairwiseOnDemand]: 60/75 looper letters, 141 selfloop transitions, 15 changer transitions 0/176 dead transitions. [2024-06-28 01:06:30,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 176 transitions, 702 flow [2024-06-28 01:06:30,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:06:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:06:30,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 320 transitions. [2024-06-28 01:06:30,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-06-28 01:06:30,321 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 154 flow. Second operand 7 states and 320 transitions. [2024-06-28 01:06:30,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 176 transitions, 702 flow [2024-06-28 01:06:30,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 176 transitions, 694 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:06:30,599 INFO L231 Difference]: Finished difference. Result has 84 places, 80 transitions, 258 flow [2024-06-28 01:06:30,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=258, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2024-06-28 01:06:30,600 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 7 predicate places. [2024-06-28 01:06:30,600 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 258 flow [2024-06-28 01:06:30,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 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) [2024-06-28 01:06:30,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:30,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:30,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:06:30,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-28 01:06:30,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:30,602 INFO L85 PathProgramCache]: Analyzing trace with hash -548424192, now seen corresponding path program 1 times [2024-06-28 01:06:30,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:30,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224724189] [2024-06-28 01:06:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:30,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:30,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:30,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224724189] [2024-06-28 01:06:30,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224724189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:30,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:30,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:06:30,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416918963] [2024-06-28 01:06:30,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:30,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:06:30,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:30,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:06:30,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:06:30,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 75 [2024-06-28 01:06:30,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:30,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:30,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 75 [2024-06-28 01:06:30,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:35,789 INFO L124 PetriNetUnfolderBase]: 52461/81195 cut-off events. [2024-06-28 01:06:35,790 INFO L125 PetriNetUnfolderBase]: For 30114/30910 co-relation queries the response was YES. [2024-06-28 01:06:35,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179931 conditions, 81195 events. 52461/81195 cut-off events. For 30114/30910 co-relation queries the response was YES. Maximal size of possible extension queue 2335. Compared 670851 event pairs, 11901 based on Foata normal form. 796/79915 useless extension candidates. Maximal degree in co-relation 179915. Up to 19489 conditions per place. [2024-06-28 01:06:36,206 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 259 selfloop transitions, 11 changer transitions 0/294 dead transitions. [2024-06-28 01:06:36,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 294 transitions, 1536 flow [2024-06-28 01:06:36,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:06:36,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:06:36,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 428 transitions. [2024-06-28 01:06:36,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7133333333333334 [2024-06-28 01:06:36,208 INFO L175 Difference]: Start difference. First operand has 84 places, 80 transitions, 258 flow. Second operand 8 states and 428 transitions. [2024-06-28 01:06:36,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 294 transitions, 1536 flow [2024-06-28 01:06:36,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 294 transitions, 1531 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:06:36,217 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 314 flow [2024-06-28 01:06:36,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=314, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2024-06-28 01:06:36,218 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2024-06-28 01:06:36,219 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 314 flow [2024-06-28 01:06:36,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:36,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:36,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:36,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:06:36,219 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-28 01:06:36,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1544497675, now seen corresponding path program 1 times [2024-06-28 01:06:36,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:36,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161621407] [2024-06-28 01:06:36,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:36,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:36,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161621407] [2024-06-28 01:06:36,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161621407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:36,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:36,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:06:36,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508567873] [2024-06-28 01:06:36,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:36,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:06:36,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:36,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:06:36,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:06:36,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 75 [2024-06-28 01:06:36,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 314 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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) [2024-06-28 01:06:36,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:36,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 75 [2024-06-28 01:06:36,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:44,705 INFO L124 PetriNetUnfolderBase]: 77854/120046 cut-off events. [2024-06-28 01:06:44,720 INFO L125 PetriNetUnfolderBase]: For 61580/62463 co-relation queries the response was YES. [2024-06-28 01:06:45,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288445 conditions, 120046 events. 77854/120046 cut-off events. For 61580/62463 co-relation queries the response was YES. Maximal size of possible extension queue 3694. Compared 1022031 event pairs, 19539 based on Foata normal form. 883/118070 useless extension candidates. Maximal degree in co-relation 288426. Up to 43544 conditions per place. [2024-06-28 01:06:45,696 INFO L140 encePairwiseOnDemand]: 64/75 looper letters, 240 selfloop transitions, 20 changer transitions 0/283 dead transitions. [2024-06-28 01:06:45,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 283 transitions, 1557 flow [2024-06-28 01:06:45,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:06:45,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:06:45,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 390 transitions. [2024-06-28 01:06:45,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-28 01:06:45,698 INFO L175 Difference]: Start difference. First operand has 92 places, 88 transitions, 314 flow. Second operand 8 states and 390 transitions. [2024-06-28 01:06:45,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 283 transitions, 1557 flow [2024-06-28 01:06:46,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 283 transitions, 1557 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 01:06:46,247 INFO L231 Difference]: Finished difference. Result has 103 places, 103 transitions, 443 flow [2024-06-28 01:06:46,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=443, PETRI_PLACES=103, PETRI_TRANSITIONS=103} [2024-06-28 01:06:46,249 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 26 predicate places. [2024-06-28 01:06:46,249 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 103 transitions, 443 flow [2024-06-28 01:06:46,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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) [2024-06-28 01:06:46,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:46,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:46,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:06:46,250 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-28 01:06:46,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:46,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1782717327, now seen corresponding path program 1 times [2024-06-28 01:06:46,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:46,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765495237] [2024-06-28 01:06:46,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:46,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:46,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:46,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:46,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765495237] [2024-06-28 01:06:46,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765495237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:46,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:46,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:06:46,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502262514] [2024-06-28 01:06:46,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:46,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:06:46,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:46,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:06:46,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:06:46,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 75 [2024-06-28 01:06:46,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 103 transitions, 443 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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) [2024-06-28 01:06:46,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:46,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 75 [2024-06-28 01:06:46,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:54,180 INFO L124 PetriNetUnfolderBase]: 62551/104868 cut-off events. [2024-06-28 01:06:54,180 INFO L125 PetriNetUnfolderBase]: For 69547/69968 co-relation queries the response was YES. [2024-06-28 01:06:54,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270433 conditions, 104868 events. 62551/104868 cut-off events. For 69547/69968 co-relation queries the response was YES. Maximal size of possible extension queue 3429. Compared 990602 event pairs, 20438 based on Foata normal form. 376/104046 useless extension candidates. Maximal degree in co-relation 270408. Up to 56839 conditions per place. [2024-06-28 01:06:54,915 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 137 selfloop transitions, 11 changer transitions 0/172 dead transitions. [2024-06-28 01:06:54,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 172 transitions, 992 flow [2024-06-28 01:06:54,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:06:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:06:54,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 229 transitions. [2024-06-28 01:06:54,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6106666666666667 [2024-06-28 01:06:54,917 INFO L175 Difference]: Start difference. First operand has 103 places, 103 transitions, 443 flow. Second operand 5 states and 229 transitions. [2024-06-28 01:06:54,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 172 transitions, 992 flow [2024-06-28 01:06:58,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 172 transitions, 992 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 01:06:58,296 INFO L231 Difference]: Finished difference. Result has 106 places, 101 transitions, 465 flow [2024-06-28 01:06:58,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=465, PETRI_PLACES=106, PETRI_TRANSITIONS=101} [2024-06-28 01:06:58,297 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 29 predicate places. [2024-06-28 01:06:58,297 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 101 transitions, 465 flow [2024-06-28 01:06:58,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 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) [2024-06-28 01:06:58,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:58,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:58,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:06:58,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-28 01:06:58,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:58,298 INFO L85 PathProgramCache]: Analyzing trace with hash -915917532, now seen corresponding path program 1 times [2024-06-28 01:06:58,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:58,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752847244] [2024-06-28 01:06:58,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:58,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:58,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:58,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:58,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752847244] [2024-06-28 01:06:58,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752847244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:58,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:58,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:06:58,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462378760] [2024-06-28 01:06:58,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:58,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:06:58,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:58,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:06:58,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:06:58,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 75 [2024-06-28 01:06:58,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 101 transitions, 465 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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) [2024-06-28 01:06:58,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:58,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 75 [2024-06-28 01:06:58,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand