./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-bluetooth.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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/parallel-bluetooth.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-bluetooth.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-76401ed-m [2024-06-20 18:12:11,899 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 18:12:11,931 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 18:12:11,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 18:12:11,935 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 18:12:11,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 18:12:11,948 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 18:12:11,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 18:12:11,949 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 18:12:11,949 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 18:12:11,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 18:12:11,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 18:12:11,950 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 18:12:11,951 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 18:12:11,951 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 18:12:11,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 18:12:11,952 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 18:12:11,952 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 18:12:11,952 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 18:12:11,953 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 18:12:11,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 18:12:11,953 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 18:12:11,954 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 18:12:11,954 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 18:12:11,954 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 18:12:11,954 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 18:12:11,955 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 18:12:11,955 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 18:12:11,955 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 18:12:11,956 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 18:12:11,956 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 18:12:11,956 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 18:12:11,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 18:12:11,957 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 18:12:11,957 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 18:12:11,957 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 18:12:11,958 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 18:12:11,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 18:12:11,958 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 18:12:11,959 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 18:12:11,959 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 18:12:11,959 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 18:12:11,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 18:12:11,960 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 18:12:12,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 18:12:12,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 18:12:12,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 18:12:12,168 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 18:12:12,168 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 18:12:12,169 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c [2024-06-20 18:12:13,105 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 18:12:13,257 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 18:12:13,258 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c [2024-06-20 18:12:13,263 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4093fbd2b/8b568f20ad3e4c798291f75bef5c6bb4/FLAGb7120399b [2024-06-20 18:12:13,273 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4093fbd2b/8b568f20ad3e4c798291f75bef5c6bb4 [2024-06-20 18:12:13,275 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 18:12:13,275 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 18:12:13,276 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-bluetooth.wvr.yml/witness.yml [2024-06-20 18:12:13,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 18:12:13,351 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 18:12:13,352 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 18:12:13,352 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 18:12:13,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 18:12:13,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 06:12:13" (1/2) ... [2024-06-20 18:12:13,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@caa7df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:12:13, skipping insertion in model container [2024-06-20 18:12:13,357 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 06:12:13" (1/2) ... [2024-06-20 18:12:13,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@19908bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:12:13, skipping insertion in model container [2024-06-20 18:12:13,359 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:12:13" (2/2) ... [2024-06-20 18:12:13,360 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@caa7df2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:12:13, skipping insertion in model container [2024-06-20 18:12:13,360 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:12:13" (2/2) ... [2024-06-20 18:12:13,360 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 18:12:13,374 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 18:12:13,375 INFO L97 edCorrectnessWitness]: Location invariant before [L111-L111] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )pos) + (long long )sFlag >= 0LL && (2147483648LL + (long long )pos) + (long long )sEvent >= 0LL) && (2147483648LL + (long long )pos) + (long long )stopped >= 0LL) && (2147483648LL + (long long )pos) + (long long )v_assert >= 0LL) && (1LL - (long long )sFlag) + (long long )stopped >= 0LL) && (1LL - (long long )sFlag) + (long long )v_assert >= 0LL) && (1LL - (long long )sEvent) + (long long )sFlag >= 0LL) && (1LL - (long long )sEvent) + (long long )stopped >= 0LL) && (1LL - (long long )sEvent) + (long long )v_assert >= 0LL) && (1LL - (long long )stopped) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )pos) + (long long )sFlag >= 0LL) && (2147483647LL - (long long )pos) + (long long )sEvent >= 0LL) && (2147483647LL - (long long )pos) + (long long )stopped >= 0LL) && (2147483647LL - (long long )pos) + (long long )v_assert >= 0LL) && (long long )sFlag + (long long )stopped >= 0LL) && (long long )sFlag + (long long )v_assert >= 0LL) && (long long )sEvent + (long long )sFlag >= 0LL) && (long long )sEvent + (long long )stopped >= 0LL) && (long long )sEvent + (long long )v_assert >= 0LL) && (long long )stopped + (long long )v_assert >= 0LL) && (1LL + (long long )sFlag) - (long long )stopped >= 0LL) && (1LL + (long long )sFlag) - (long long )v_assert >= 0LL) && (1LL + (long long )sEvent) - (long long )sFlag >= 0LL) && (1LL + (long long )sEvent) - (long long )stopped >= 0LL) && (1LL + (long long )sEvent) - (long long )v_assert >= 0LL) && (1LL + (long long )stopped) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )pos) - (long long )sFlag >= 0LL) && (2147483649LL + (long long )pos) - (long long )sEvent >= 0LL) && (2147483649LL + (long long )pos) - (long long )stopped >= 0LL) && (2147483649LL + (long long )pos) - (long long )v_assert >= 0LL) && (2LL - (long long )sFlag) - (long long )stopped >= 0LL) && (2LL - (long long )sFlag) - (long long )v_assert >= 0LL) && (2LL - (long long )sEvent) - (long long )sFlag >= 0LL) && (2LL - (long long )sEvent) - (long long )stopped >= 0LL) && (2LL - (long long )sEvent) - (long long )v_assert >= 0LL) && (2LL - (long long )stopped) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )pos) - (long long )sFlag >= 0LL) && (2147483648LL - (long long )pos) - (long long )sEvent >= 0LL) && (2147483648LL - (long long )pos) - (long long )stopped >= 0LL) && (2147483648LL - (long long )pos) - (long long )v_assert >= 0LL) [2024-06-20 18:12:13,375 INFO L97 edCorrectnessWitness]: Location invariant before [L110-L110] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )pos) + (long long )sFlag >= 0LL && (2147483648LL + (long long )pos) + (long long )sEvent >= 0LL) && (2147483648LL + (long long )pos) + (long long )stopped >= 0LL) && (2147483648LL + (long long )pos) + (long long )v_assert >= 0LL) && (1LL - (long long )sFlag) + (long long )stopped >= 0LL) && (1LL - (long long )sFlag) + (long long )v_assert >= 0LL) && (1LL - (long long )sEvent) + (long long )sFlag >= 0LL) && (1LL - (long long )sEvent) + (long long )stopped >= 0LL) && (1LL - (long long )sEvent) + (long long )v_assert >= 0LL) && (1LL - (long long )stopped) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )pos) + (long long )sFlag >= 0LL) && (2147483647LL - (long long )pos) + (long long )sEvent >= 0LL) && (2147483647LL - (long long )pos) + (long long )stopped >= 0LL) && (2147483647LL - (long long )pos) + (long long )v_assert >= 0LL) && (long long )sFlag + (long long )stopped >= 0LL) && (long long )sFlag + (long long )v_assert >= 0LL) && (long long )sEvent + (long long )sFlag >= 0LL) && (long long )sEvent + (long long )stopped >= 0LL) && (long long )sEvent + (long long )v_assert >= 0LL) && (long long )stopped + (long long )v_assert >= 0LL) && (1LL + (long long )sFlag) - (long long )stopped >= 0LL) && (1LL + (long long )sFlag) - (long long )v_assert >= 0LL) && (1LL + (long long )sEvent) - (long long )sFlag >= 0LL) && (1LL + (long long )sEvent) - (long long )stopped >= 0LL) && (1LL + (long long )sEvent) - (long long )v_assert >= 0LL) && (1LL + (long long )stopped) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )pos) - (long long )sFlag >= 0LL) && (2147483649LL + (long long )pos) - (long long )sEvent >= 0LL) && (2147483649LL + (long long )pos) - (long long )stopped >= 0LL) && (2147483649LL + (long long )pos) - (long long )v_assert >= 0LL) && (2LL - (long long )sFlag) - (long long )stopped >= 0LL) && (2LL - (long long )sFlag) - (long long )v_assert >= 0LL) && (2LL - (long long )sEvent) - (long long )sFlag >= 0LL) && (2LL - (long long )sEvent) - (long long )stopped >= 0LL) && (2LL - (long long )sEvent) - (long long )v_assert >= 0LL) && (2LL - (long long )stopped) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )pos) - (long long )sFlag >= 0LL) && (2147483648LL - (long long )pos) - (long long )sEvent >= 0LL) && (2147483648LL - (long long )pos) - (long long )stopped >= 0LL) && (2147483648LL - (long long )pos) - (long long )v_assert >= 0LL) [2024-06-20 18:12:13,375 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 18:12:13,376 INFO L106 edCorrectnessWitness]: ghost_update [L109-L109] multithreaded = 1; [2024-06-20 18:12:13,391 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 18:12:13,552 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 18:12:13,559 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 18:12:13,634 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 18:12:13,648 INFO L206 MainTranslator]: Completed translation [2024-06-20 18:12:13,649 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:12:13 WrapperNode [2024-06-20 18:12:13,649 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 18:12:13,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 18:12:13,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 18:12:13,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 18:12:13,655 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 20.06 06:12:13" (1/1) ... [2024-06-20 18:12:13,662 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 20.06 06:12:13" (1/1) ... [2024-06-20 18:12:13,701 INFO L138 Inliner]: procedures = 20, calls = 39, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 124 [2024-06-20 18:12:13,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 18:12:13,702 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 18:12:13,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 18:12:13,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 18:12:13,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:12:13" (1/1) ... [2024-06-20 18:12:13,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:12:13" (1/1) ... [2024-06-20 18:12:13,714 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:12:13" (1/1) ... [2024-06-20 18:12:13,726 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]. [2024-06-20 18:12:13,726 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:12:13" (1/1) ... [2024-06-20 18:12:13,726 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:12:13" (1/1) ... [2024-06-20 18:12:13,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:12:13" (1/1) ... [2024-06-20 18:12:13,735 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:12:13" (1/1) ... [2024-06-20 18:12:13,736 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:12:13" (1/1) ... [2024-06-20 18:12:13,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:12:13" (1/1) ... [2024-06-20 18:12:13,740 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 18:12:13,740 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 18:12:13,740 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 18:12:13,740 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 18:12:13,741 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:12:13" (1/1) ... [2024-06-20 18:12:13,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 18:12:13,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 18:12:13,854 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) [2024-06-20 18:12:13,933 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 [2024-06-20 18:12:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 18:12:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-20 18:12:13,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-20 18:12:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-20 18:12:13,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-20 18:12:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 18:12:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 18:12:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 18:12:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 18:12:13,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 18:12:13,950 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 18:12:14,012 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 18:12:14,014 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 18:12:14,271 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 18:12:14,271 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 18:12:14,426 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 18:12:14,426 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 18:12:14,426 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 06:12:14 BoogieIcfgContainer [2024-06-20 18:12:14,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 18:12:14,446 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 18:12:14,446 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 18:12:14,449 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 18:12:14,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 06:12:13" (1/4) ... [2024-06-20 18:12:14,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131fc92c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 06:12:14, skipping insertion in model container [2024-06-20 18:12:14,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:12:13" (2/4) ... [2024-06-20 18:12:14,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131fc92c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 06:12:14, skipping insertion in model container [2024-06-20 18:12:14,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:12:13" (3/4) ... [2024-06-20 18:12:14,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@131fc92c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 06:12:14, skipping insertion in model container [2024-06-20 18:12:14,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 06:12:14" (4/4) ... [2024-06-20 18:12:14,454 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bluetooth.wvr.c [2024-06-20 18:12:14,468 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 18:12:14,469 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 18:12:14,469 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 18:12:14,506 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-20 18:12:14,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 34 transitions, 82 flow [2024-06-20 18:12:14,559 INFO L124 PetriNetUnfolderBase]: 2/32 cut-off events. [2024-06-20 18:12:14,560 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-20 18:12:14,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 2/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 43 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2024-06-20 18:12:14,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 34 transitions, 82 flow [2024-06-20 18:12:14,565 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 69 flow [2024-06-20 18:12:14,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 18:12:14,577 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;@2dd47343, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 18:12:14,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 18:12:14,585 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 18:12:14,585 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-20 18:12:14,586 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 18:12:14,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:12:14,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 18:12:14,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 18:12:14,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:12:14,594 INFO L85 PathProgramCache]: Analyzing trace with hash 366657232, now seen corresponding path program 1 times [2024-06-20 18:12:14,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:12:14,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719600262] [2024-06-20 18:12:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:12:14,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:12:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:12:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:12:15,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:12:15,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719600262] [2024-06-20 18:12:15,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719600262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:12:15,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:12:15,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 18:12:15,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483102000] [2024-06-20 18:12:15,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:12:15,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 18:12:15,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:12:15,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 18:12:15,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 18:12:15,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2024-06-20 18:12:15,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-06-20 18:12:15,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:12:15,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2024-06-20 18:12:15,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:12:15,422 INFO L124 PetriNetUnfolderBase]: 199/391 cut-off events. [2024-06-20 18:12:15,423 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-06-20 18:12:15,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 391 events. 199/391 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1705 event pairs, 61 based on Foata normal form. 4/372 useless extension candidates. Maximal degree in co-relation 700. Up to 303 conditions per place. [2024-06-20 18:12:15,428 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 25 selfloop transitions, 3 changer transitions 2/40 dead transitions. [2024-06-20 18:12:15,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 155 flow [2024-06-20 18:12:15,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 18:12:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 18:12:15,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-06-20 18:12:15,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-20 18:12:15,438 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 69 flow. Second operand 3 states and 68 transitions. [2024-06-20 18:12:15,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 155 flow [2024-06-20 18:12:15,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 147 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-20 18:12:15,443 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 82 flow [2024-06-20 18:12:15,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2024-06-20 18:12:15,447 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2024-06-20 18:12:15,448 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 82 flow [2024-06-20 18:12:15,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-06-20 18:12:15,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:12:15,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:12:15,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 18:12:15,449 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 18:12:15,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:12:15,450 INFO L85 PathProgramCache]: Analyzing trace with hash 898283274, now seen corresponding path program 1 times [2024-06-20 18:12:15,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:12:15,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187751724] [2024-06-20 18:12:15,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:12:15,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:12:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:12:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:12:15,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:12:15,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187751724] [2024-06-20 18:12:15,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187751724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:12:15,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:12:15,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 18:12:15,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72462594] [2024-06-20 18:12:15,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:12:15,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 18:12:15,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:12:15,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 18:12:15,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-20 18:12:16,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 34 [2024-06-20 18:12:16,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-06-20 18:12:16,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:12:16,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 34 [2024-06-20 18:12:16,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:12:16,115 INFO L124 PetriNetUnfolderBase]: 184/364 cut-off events. [2024-06-20 18:12:16,115 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-06-20 18:12:16,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 364 events. 184/364 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1538 event pairs, 42 based on Foata normal form. 20/369 useless extension candidates. Maximal degree in co-relation 398. Up to 235 conditions per place. [2024-06-20 18:12:16,117 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 31 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2024-06-20 18:12:16,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 190 flow [2024-06-20 18:12:16,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 18:12:16,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 18:12:16,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-06-20 18:12:16,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6102941176470589 [2024-06-20 18:12:16,119 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 82 flow. Second operand 4 states and 83 transitions. [2024-06-20 18:12:16,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 190 flow [2024-06-20 18:12:16,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 18:12:16,121 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 110 flow [2024-06-20 18:12:16,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2024-06-20 18:12:16,122 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2024-06-20 18:12:16,122 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 110 flow [2024-06-20 18:12:16,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-06-20 18:12:16,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:12:16,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:12:16,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 18:12:16,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 18:12:16,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:12:16,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1188310962, now seen corresponding path program 1 times [2024-06-20 18:12:16,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:12:16,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207795888] [2024-06-20 18:12:16,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:12:16,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:12:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:12:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:12:16,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:12:16,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207795888] [2024-06-20 18:12:16,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207795888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:12:16,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:12:16,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 18:12:16,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166150640] [2024-06-20 18:12:16,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:12:16,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 18:12:16,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:12:16,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 18:12:16,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-20 18:12:16,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2024-06-20 18:12:16,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-06-20 18:12:16,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:12:16,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2024-06-20 18:12:16,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:12:16,585 INFO L124 PetriNetUnfolderBase]: 180/356 cut-off events. [2024-06-20 18:12:16,586 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-06-20 18:12:16,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 858 conditions, 356 events. 180/356 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1501 event pairs, 52 based on Foata normal form. 4/345 useless extension candidates. Maximal degree in co-relation 447. Up to 263 conditions per place. [2024-06-20 18:12:16,589 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 27 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-06-20 18:12:16,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 188 flow [2024-06-20 18:12:16,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 18:12:16,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 18:12:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-06-20 18:12:16,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5808823529411765 [2024-06-20 18:12:16,593 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 110 flow. Second operand 4 states and 79 transitions. [2024-06-20 18:12:16,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 188 flow [2024-06-20 18:12:16,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 18:12:16,596 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 111 flow [2024-06-20 18:12:16,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-06-20 18:12:16,597 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-06-20 18:12:16,597 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 111 flow [2024-06-20 18:12:16,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-06-20 18:12:16,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:12:16,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:12:16,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 18:12:16,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 18:12:16,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:12:16,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1843677348, now seen corresponding path program 1 times [2024-06-20 18:12:16,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:12:16,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283974002] [2024-06-20 18:12:16,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:12:16,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:12:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:12:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:12:16,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:12:16,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283974002] [2024-06-20 18:12:16,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283974002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:12:16,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:12:16,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 18:12:16,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640171223] [2024-06-20 18:12:16,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:12:16,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 18:12:16,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:12:16,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 18:12:16,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-20 18:12:17,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 34 [2024-06-20 18:12:17,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 111 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-06-20 18:12:17,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:12:17,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 34 [2024-06-20 18:12:17,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:12:17,106 INFO L124 PetriNetUnfolderBase]: 185/387 cut-off events. [2024-06-20 18:12:17,107 INFO L125 PetriNetUnfolderBase]: For 288/296 co-relation queries the response was YES. [2024-06-20 18:12:17,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 387 events. 185/387 cut-off events. For 288/296 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1710 event pairs, 33 based on Foata normal form. 16/380 useless extension candidates. Maximal degree in co-relation 573. Up to 104 conditions per place. [2024-06-20 18:12:17,110 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 34 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2024-06-20 18:12:17,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 247 flow [2024-06-20 18:12:17,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 18:12:17,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 18:12:17,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-06-20 18:12:17,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5647058823529412 [2024-06-20 18:12:17,113 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 111 flow. Second operand 5 states and 96 transitions. [2024-06-20 18:12:17,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 247 flow [2024-06-20 18:12:17,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 239 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-20 18:12:17,116 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 139 flow [2024-06-20 18:12:17,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-20 18:12:17,118 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2024-06-20 18:12:17,118 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 139 flow [2024-06-20 18:12:17,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-06-20 18:12:17,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:12:17,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:12:17,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 18:12:17,119 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 18:12:17,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:12:17,119 INFO L85 PathProgramCache]: Analyzing trace with hash 613229670, now seen corresponding path program 1 times [2024-06-20 18:12:17,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:12:17,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582139269] [2024-06-20 18:12:17,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:12:17,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:12:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:12:17,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:12:17,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:12:17,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582139269] [2024-06-20 18:12:17,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582139269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:12:17,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:12:17,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 18:12:17,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417192267] [2024-06-20 18:12:17,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:12:17,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 18:12:17,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:12:17,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 18:12:17,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-20 18:12:17,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-06-20 18:12:17,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 139 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-20 18:12:17,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:12:17,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-06-20 18:12:17,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:12:17,675 INFO L124 PetriNetUnfolderBase]: 278/541 cut-off events. [2024-06-20 18:12:17,676 INFO L125 PetriNetUnfolderBase]: For 543/543 co-relation queries the response was YES. [2024-06-20 18:12:17,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1359 conditions, 541 events. 278/541 cut-off events. For 543/543 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2542 event pairs, 58 based on Foata normal form. 8/525 useless extension candidates. Maximal degree in co-relation 933. Up to 153 conditions per place. [2024-06-20 18:12:17,678 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 37 selfloop transitions, 11 changer transitions 4/60 dead transitions. [2024-06-20 18:12:17,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 306 flow [2024-06-20 18:12:17,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 18:12:17,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 18:12:17,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-20 18:12:17,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084033613445378 [2024-06-20 18:12:17,680 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 139 flow. Second operand 7 states and 121 transitions. [2024-06-20 18:12:17,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 306 flow [2024-06-20 18:12:17,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 297 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-20 18:12:17,684 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 171 flow [2024-06-20 18:12:17,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=171, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2024-06-20 18:12:17,686 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2024-06-20 18:12:17,688 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 171 flow [2024-06-20 18:12:17,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2024-06-20 18:12:17,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:12:17,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:12:17,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 18:12:17,693 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 18:12:17,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:12:17,693 INFO L85 PathProgramCache]: Analyzing trace with hash -93316493, now seen corresponding path program 1 times [2024-06-20 18:12:17,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:12:17,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579773655] [2024-06-20 18:12:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:12:17,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:12:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:12:17,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:12:17,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:12:17,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579773655] [2024-06-20 18:12:17,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579773655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:12:17,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:12:17,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 18:12:17,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814943893] [2024-06-20 18:12:17,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:12:17,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 18:12:17,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:12:17,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 18:12:17,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-20 18:12:18,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 34 [2024-06-20 18:12:18,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 171 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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) [2024-06-20 18:12:18,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:12:18,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 34 [2024-06-20 18:12:18,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:12:18,132 INFO L124 PetriNetUnfolderBase]: 253/535 cut-off events. [2024-06-20 18:12:18,132 INFO L125 PetriNetUnfolderBase]: For 732/732 co-relation queries the response was YES. [2024-06-20 18:12:18,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 535 events. 253/535 cut-off events. For 732/732 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2721 event pairs, 121 based on Foata normal form. 10/513 useless extension candidates. Maximal degree in co-relation 1093. Up to 265 conditions per place. [2024-06-20 18:12:18,134 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 28 selfloop transitions, 3 changer transitions 25/64 dead transitions. [2024-06-20 18:12:18,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 64 transitions, 387 flow [2024-06-20 18:12:18,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 18:12:18,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 18:12:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-20 18:12:18,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637254901960784 [2024-06-20 18:12:18,135 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 171 flow. Second operand 6 states and 115 transitions. [2024-06-20 18:12:18,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 64 transitions, 387 flow [2024-06-20 18:12:18,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 18:12:18,138 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 184 flow [2024-06-20 18:12:18,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2024-06-20 18:12:18,138 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 19 predicate places. [2024-06-20 18:12:18,138 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 184 flow [2024-06-20 18:12:18,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 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) [2024-06-20 18:12:18,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:12:18,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:12:18,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 18:12:18,139 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 18:12:18,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:12:18,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2024950752, now seen corresponding path program 1 times [2024-06-20 18:12:18,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:12:18,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036110869] [2024-06-20 18:12:18,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:12:18,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:12:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:12:18,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:12:18,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:12:18,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036110869] [2024-06-20 18:12:18,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036110869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:12:18,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:12:18,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 18:12:18,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479326252] [2024-06-20 18:12:18,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:12:18,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 18:12:18,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:12:18,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 18:12:18,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-20 18:12:18,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-06-20 18:12:18,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 184 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:12:18,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:12:18,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-06-20 18:12:18,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:12:18,707 INFO L124 PetriNetUnfolderBase]: 149/320 cut-off events. [2024-06-20 18:12:18,707 INFO L125 PetriNetUnfolderBase]: For 601/601 co-relation queries the response was YES. [2024-06-20 18:12:18,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 320 events. 149/320 cut-off events. For 601/601 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1304 event pairs, 10 based on Foata normal form. 8/312 useless extension candidates. Maximal degree in co-relation 824. Up to 88 conditions per place. [2024-06-20 18:12:18,709 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 21 selfloop transitions, 6 changer transitions 25/60 dead transitions. [2024-06-20 18:12:18,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 346 flow [2024-06-20 18:12:18,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 18:12:18,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 18:12:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-20 18:12:18,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46405228758169936 [2024-06-20 18:12:18,711 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 184 flow. Second operand 9 states and 142 transitions. [2024-06-20 18:12:18,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 346 flow [2024-06-20 18:12:18,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 332 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-20 18:12:18,713 INFO L231 Difference]: Finished difference. Result has 55 places, 28 transitions, 123 flow [2024-06-20 18:12:18,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=123, PETRI_PLACES=55, PETRI_TRANSITIONS=28} [2024-06-20 18:12:18,715 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places. [2024-06-20 18:12:18,715 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 28 transitions, 123 flow [2024-06-20 18:12:18,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 18:12:18,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:12:18,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:12:18,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 18:12:18,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 18:12:18,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:12:18,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1697915092, now seen corresponding path program 1 times [2024-06-20 18:12:18,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:12:18,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428391775] [2024-06-20 18:12:18,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:12:18,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:12:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:12:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:12:19,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:12:19,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428391775] [2024-06-20 18:12:19,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428391775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:12:19,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:12:19,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 18:12:19,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482405398] [2024-06-20 18:12:19,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:12:19,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 18:12:19,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:12:19,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 18:12:19,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-20 18:12:19,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-06-20 18:12:19,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 28 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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) [2024-06-20 18:12:19,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:12:19,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-06-20 18:12:19,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:12:19,187 INFO L124 PetriNetUnfolderBase]: 44/123 cut-off events. [2024-06-20 18:12:19,187 INFO L125 PetriNetUnfolderBase]: For 179/179 co-relation queries the response was YES. [2024-06-20 18:12:19,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 123 events. 44/123 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 342 event pairs, 6 based on Foata normal form. 4/117 useless extension candidates. Maximal degree in co-relation 312. Up to 32 conditions per place. [2024-06-20 18:12:19,188 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2024-06-20 18:12:19,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 37 transitions, 191 flow [2024-06-20 18:12:19,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 18:12:19,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 18:12:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-20 18:12:19,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42016806722689076 [2024-06-20 18:12:19,191 INFO L175 Difference]: Start difference. First operand has 55 places, 28 transitions, 123 flow. Second operand 7 states and 100 transitions. [2024-06-20 18:12:19,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 37 transitions, 191 flow [2024-06-20 18:12:19,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 152 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-20 18:12:19,192 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2024-06-20 18:12:19,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2024-06-20 18:12:19,194 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2024-06-20 18:12:19,194 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2024-06-20 18:12:19,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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) [2024-06-20 18:12:19,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-20 18:12:19,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-20 18:12:19,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-20 18:12:19,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-20 18:12:19,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 18:12:19,199 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:12:19,201 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 18:12:19,201 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 18:12:19,209 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-20 18:12:19,209 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-20 18:12:19,210 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 06:12:19 BasicIcfg [2024-06-20 18:12:19,210 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 18:12:19,211 INFO L158 Benchmark]: Toolchain (without parser) took 5860.00ms. Allocated memory was 153.1MB in the beginning and 308.3MB in the end (delta: 155.2MB). Free memory was 115.3MB in the beginning and 119.1MB in the end (delta: -3.8MB). Peak memory consumption was 152.4MB. Max. memory is 16.1GB. [2024-06-20 18:12:19,211 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 18:12:19,211 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 153.1MB. Free memory is still 118.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 18:12:19,211 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.49ms. Allocated memory is still 153.1MB. Free memory was 115.3MB in the beginning and 98.5MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-20 18:12:19,211 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.33ms. Allocated memory is still 153.1MB. Free memory was 98.5MB in the beginning and 94.3MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-20 18:12:19,212 INFO L158 Benchmark]: Boogie Preprocessor took 37.46ms. Allocated memory is still 153.1MB. Free memory was 94.3MB in the beginning and 91.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-20 18:12:19,213 INFO L158 Benchmark]: RCFGBuilder took 686.39ms. Allocated memory is still 153.1MB. Free memory was 91.5MB in the beginning and 71.3MB in the end (delta: 20.2MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2024-06-20 18:12:19,213 INFO L158 Benchmark]: TraceAbstraction took 4764.06ms. Allocated memory was 153.1MB in the beginning and 308.3MB in the end (delta: 155.2MB). Free memory was 122.8MB in the beginning and 119.1MB in the end (delta: 3.7MB). Peak memory consumption was 158.7MB. Max. memory is 16.1GB. [2024-06-20 18:12:19,214 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 153.1MB. Free memory is still 118.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.49ms. Allocated memory is still 153.1MB. Free memory was 115.3MB in the beginning and 98.5MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.33ms. Allocated memory is still 153.1MB. Free memory was 98.5MB in the beginning and 94.3MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.46ms. Allocated memory is still 153.1MB. Free memory was 94.3MB in the beginning and 91.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 686.39ms. Allocated memory is still 153.1MB. Free memory was 91.5MB in the beginning and 71.3MB in the end (delta: 20.2MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. * TraceAbstraction took 4764.06ms. Allocated memory was 153.1MB in the beginning and 308.3MB in the end (delta: 155.2MB). Free memory was 122.8MB in the beginning and 119.1MB in the end (delta: 3.7MB). Peak memory consumption was 158.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 110]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 111]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 54 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 302 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 246 mSDsluCounter, 110 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 60 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 712 IncrementalHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 50 mSDtfsCounter, 712 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=6, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 2602 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-20 18:12:19,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE