./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/stack_longest-2.i --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/stack_longest-2.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/stack_longest-2.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/stack_longest-2.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-bcb38a6-m [2024-06-03 20:32:40,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 20:32:40,842 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 20:32:40,849 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 20:32:40,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 20:32:40,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 20:32:40,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 20:32:40,880 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 20:32:40,881 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 20:32:40,885 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 20:32:40,885 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 20:32:40,885 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 20:32:40,886 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 20:32:40,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 20:32:40,888 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 20:32:40,888 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 20:32:40,888 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 20:32:40,888 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 20:32:40,889 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 20:32:40,889 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 20:32:40,889 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 20:32:40,890 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 20:32:40,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 20:32:40,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 20:32:40,890 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 20:32:40,891 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 20:32:40,891 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 20:32:40,891 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 20:32:40,892 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 20:32:40,892 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 20:32:40,893 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 20:32:40,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 20:32:40,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:32:40,893 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 20:32:40,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 20:32:40,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 20:32:40,894 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 20:32:40,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 20:32:40,894 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 20:32:40,895 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 20:32:40,895 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 20:32:40,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 20:32:40,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 20:32:40,895 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 20:32:41,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 20:32:41,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 20:32:41,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 20:32:41,225 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 20:32:41,226 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 20:32:41,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-2.i [2024-06-03 20:32:42,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 20:32:42,655 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 20:32:42,656 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i [2024-06-03 20:32:42,673 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d92a7da0d/d14e62a973ed488298c99b94a00300b1/FLAG97ad21fe4 [2024-06-03 20:32:42,688 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d92a7da0d/d14e62a973ed488298c99b94a00300b1 [2024-06-03 20:32:42,690 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 20:32:42,692 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 20:32:42,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/stack_longest-2.yml/witness.yml [2024-06-03 20:32:42,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 20:32:42,835 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 20:32:42,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 20:32:42,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 20:32:42,841 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 20:32:42,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:32:42" (1/2) ... [2024-06-03 20:32:42,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a94f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:32:42, skipping insertion in model container [2024-06-03 20:32:42,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:32:42" (1/2) ... [2024-06-03 20:32:42,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7faf158d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:32:42, skipping insertion in model container [2024-06-03 20:32:42,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:32:42" (2/2) ... [2024-06-03 20:32:42,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a94f8a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:42, skipping insertion in model container [2024-06-03 20:32:42,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:32:42" (2/2) ... [2024-06-03 20:32:42,869 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 20:32:42,916 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 20:32:42,918 INFO L97 edCorrectnessWitness]: Location invariant before [L1023-L1023] ((! multithreaded || (m_locked || flag == (_Bool)0)) && (! multithreaded || (m_locked || ((0LL - (long long )flag) + (long long )top >= 0LL && (long long )flag + (long long )top >= 0LL)))) && (! multithreaded || flag == (_Bool)0) [2024-06-03 20:32:42,918 INFO L97 edCorrectnessWitness]: Location invariant before [L1022-L1022] ((! multithreaded || (m_locked || flag == (_Bool)0)) && (! multithreaded || (m_locked || ((0LL - (long long )flag) + (long long )top >= 0LL && (long long )flag + (long long )top >= 0LL)))) && (! multithreaded || flag == (_Bool)0) [2024-06-03 20:32:42,918 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 20:32:42,919 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-06-03 20:32:42,919 INFO L106 edCorrectnessWitness]: ghost_update [L1013-L1013] m_locked = 0; [2024-06-03 20:32:42,920 INFO L106 edCorrectnessWitness]: ghost_update [L993-L993] m_locked = 1; [2024-06-03 20:32:42,920 INFO L106 edCorrectnessWitness]: ghost_update [L998-L998] m_locked = 0; [2024-06-03 20:32:42,920 INFO L106 edCorrectnessWitness]: ghost_update [L1021-L1021] multithreaded = 1; [2024-06-03 20:32:42,920 INFO L106 edCorrectnessWitness]: ghost_update [L1007-L1007] m_locked = 1; [2024-06-03 20:32:42,969 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 20:32:43,371 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:32:43,385 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 20:32:43,477 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:32:43,544 INFO L206 MainTranslator]: Completed translation [2024-06-03 20:32:43,545 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:43 WrapperNode [2024-06-03 20:32:43,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 20:32:43,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 20:32:43,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 20:32:43,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 20:32:43,554 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 03.06 08:32:43" (1/1) ... [2024-06-03 20:32:43,587 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 03.06 08:32:43" (1/1) ... [2024-06-03 20:32:43,615 INFO L138 Inliner]: procedures = 277, calls = 31, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 160 [2024-06-03 20:32:43,619 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 20:32:43,620 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 20:32:43,620 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 20:32:43,620 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 20:32:43,631 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:43" (1/1) ... [2024-06-03 20:32:43,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:43" (1/1) ... [2024-06-03 20:32:43,645 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:43" (1/1) ... [2024-06-03 20:32:43,666 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 5, 3]. 50 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-06-03 20:32:43,666 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:43" (1/1) ... [2024-06-03 20:32:43,666 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:43" (1/1) ... [2024-06-03 20:32:43,674 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:43" (1/1) ... [2024-06-03 20:32:43,678 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:43" (1/1) ... [2024-06-03 20:32:43,680 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:43" (1/1) ... [2024-06-03 20:32:43,681 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:43" (1/1) ... [2024-06-03 20:32:43,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 20:32:43,685 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 20:32:43,685 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 20:32:43,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 20:32:43,686 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:43" (1/1) ... [2024-06-03 20:32:43,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:32:43,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 20:32:43,737 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) [2024-06-03 20:32:43,826 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 [2024-06-03 20:32:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-03 20:32:43,843 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-03 20:32:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-03 20:32:43,843 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-03 20:32:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-03 20:32:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-03 20:32:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-03 20:32:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-06-03 20:32:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-03 20:32:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-03 20:32:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-06-03 20:32:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-03 20:32:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 20:32:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 20:32:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-03 20:32:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-03 20:32:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 20:32:43,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 20:32:43,849 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 20:32:44,010 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 20:32:44,012 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 20:32:44,285 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 20:32:44,285 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 20:32:44,515 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 20:32:44,515 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-03 20:32:44,516 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:32:44 BoogieIcfgContainer [2024-06-03 20:32:44,516 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 20:32:44,519 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 20:32:44,519 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 20:32:44,522 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 20:32:44,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 08:32:42" (1/4) ... [2024-06-03 20:32:44,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b93f742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 08:32:44, skipping insertion in model container [2024-06-03 20:32:44,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:32:42" (2/4) ... [2024-06-03 20:32:44,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b93f742 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 08:32:44, skipping insertion in model container [2024-06-03 20:32:44,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:43" (3/4) ... [2024-06-03 20:32:44,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b93f742 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 08:32:44, skipping insertion in model container [2024-06-03 20:32:44,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:32:44" (4/4) ... [2024-06-03 20:32:44,527 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2024-06-03 20:32:44,544 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 20:32:44,544 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 20:32:44,544 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 20:32:44,596 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-03 20:32:44,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 30 transitions, 74 flow [2024-06-03 20:32:44,668 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-06-03 20:32:44,669 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-03 20:32:44,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 2/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 42 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-06-03 20:32:44,676 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 30 transitions, 74 flow [2024-06-03 20:32:44,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 26 transitions, 61 flow [2024-06-03 20:32:44,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 20:32:44,708 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;@4d447ab6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 20:32:44,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 20:32:44,716 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 20:32:44,716 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-06-03 20:32:44,716 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 20:32:44,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:44,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 20:32:44,718 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)] === [2024-06-03 20:32:44,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:44,724 INFO L85 PathProgramCache]: Analyzing trace with hash -28591471, now seen corresponding path program 1 times [2024-06-03 20:32:44,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:44,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104598471] [2024-06-03 20:32:44,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:44,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:45,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:45,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:45,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104598471] [2024-06-03 20:32:45,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104598471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:45,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:45,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 20:32:45,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315771920] [2024-06-03 20:32:45,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:45,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 20:32:45,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:45,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 20:32:45,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 20:32:45,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-03 20:32:45,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-06-03 20:32:45,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:45,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-03 20:32:45,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:45,332 INFO L124 PetriNetUnfolderBase]: 267/485 cut-off events. [2024-06-03 20:32:45,333 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-03 20:32:45,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 973 conditions, 485 events. 267/485 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2027 event pairs, 95 based on Foata normal form. 24/498 useless extension candidates. Maximal degree in co-relation 899. Up to 308 conditions per place. [2024-06-03 20:32:45,338 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 32 selfloop transitions, 2 changer transitions 3/40 dead transitions. [2024-06-03 20:32:45,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 169 flow [2024-06-03 20:32:45,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:32:45,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:32:45,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-03 20:32:45,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-03 20:32:45,352 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 61 flow. Second operand 3 states and 54 transitions. [2024-06-03 20:32:45,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 169 flow [2024-06-03 20:32:45,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 161 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 20:32:45,357 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 67 flow [2024-06-03 20:32:45,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-06-03 20:32:45,360 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2024-06-03 20:32:45,360 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 67 flow [2024-06-03 20:32:45,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2024-06-03 20:32:45,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:45,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:45,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 20:32:45,361 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:32:45,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:45,362 INFO L85 PathProgramCache]: Analyzing trace with hash 685559177, now seen corresponding path program 1 times [2024-06-03 20:32:45,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:45,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122203422] [2024-06-03 20:32:45,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:45,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:45,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:45,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122203422] [2024-06-03 20:32:45,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122203422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:45,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:45,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 20:32:45,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112647289] [2024-06-03 20:32:45,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:45,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 20:32:45,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:45,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 20:32:45,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 20:32:45,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-03 20:32:45,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2024-06-03 20:32:45,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:45,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-03 20:32:45,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:45,691 INFO L124 PetriNetUnfolderBase]: 315/575 cut-off events. [2024-06-03 20:32:45,691 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-06-03 20:32:45,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1212 conditions, 575 events. 315/575 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2307 event pairs, 82 based on Foata normal form. 35/605 useless extension candidates. Maximal degree in co-relation 867. Up to 211 conditions per place. [2024-06-03 20:32:45,699 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 39 selfloop transitions, 3 changer transitions 3/48 dead transitions. [2024-06-03 20:32:45,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 48 transitions, 203 flow [2024-06-03 20:32:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 20:32:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 20:32:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-03 20:32:45,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-06-03 20:32:45,706 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 67 flow. Second operand 4 states and 67 transitions. [2024-06-03 20:32:45,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 48 transitions, 203 flow [2024-06-03 20:32:45,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 48 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 20:32:45,710 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 75 flow [2024-06-03 20:32:45,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=75, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-03 20:32:45,713 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-03 20:32:45,714 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 75 flow [2024-06-03 20:32:45,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2024-06-03 20:32:45,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:45,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:45,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 20:32:45,716 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:32:45,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:45,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1194571169, now seen corresponding path program 1 times [2024-06-03 20:32:45,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:45,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067989117] [2024-06-03 20:32:45,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:45,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:45,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:45,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:45,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067989117] [2024-06-03 20:32:45,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067989117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:45,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:45,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:32:45,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316563316] [2024-06-03 20:32:45,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:45,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 20:32:45,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:45,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 20:32:45,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 20:32:45,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-03 20:32:45,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-06-03 20:32:45,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:45,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-03 20:32:45,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:45,995 INFO L124 PetriNetUnfolderBase]: 212/418 cut-off events. [2024-06-03 20:32:45,996 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-06-03 20:32:45,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 901 conditions, 418 events. 212/418 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1612 event pairs, 86 based on Foata normal form. 20/427 useless extension candidates. Maximal degree in co-relation 423. Up to 189 conditions per place. [2024-06-03 20:32:45,999 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 28 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2024-06-03 20:32:45,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 161 flow [2024-06-03 20:32:46,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:32:46,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:32:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-03 20:32:46,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-06-03 20:32:46,002 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 75 flow. Second operand 3 states and 53 transitions. [2024-06-03 20:32:46,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 161 flow [2024-06-03 20:32:46,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 157 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 20:32:46,007 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 79 flow [2024-06-03 20:32:46,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-03 20:32:46,012 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-03 20:32:46,012 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 79 flow [2024-06-03 20:32:46,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-06-03 20:32:46,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:46,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:46,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 20:32:46,015 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)] === [2024-06-03 20:32:46,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:46,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1012559136, now seen corresponding path program 1 times [2024-06-03 20:32:46,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:46,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018936522] [2024-06-03 20:32:46,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:46,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:46,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:46,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:46,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018936522] [2024-06-03 20:32:46,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018936522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:46,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:46,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:32:46,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857897883] [2024-06-03 20:32:46,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:46,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:46,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:46,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:46,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:46,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-03 20:32:46,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 79 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 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) [2024-06-03 20:32:46,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:46,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-03 20:32:46,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:46,409 INFO L124 PetriNetUnfolderBase]: 384/688 cut-off events. [2024-06-03 20:32:46,409 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-06-03 20:32:46,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 688 events. 384/688 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2729 event pairs, 68 based on Foata normal form. 12/696 useless extension candidates. Maximal degree in co-relation 1202. Up to 311 conditions per place. [2024-06-03 20:32:46,413 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 33 selfloop transitions, 8 changer transitions 5/48 dead transitions. [2024-06-03 20:32:46,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 223 flow [2024-06-03 20:32:46,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:32:46,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:32:46,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-03 20:32:46,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-03 20:32:46,415 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 79 flow. Second operand 6 states and 69 transitions. [2024-06-03 20:32:46,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 223 flow [2024-06-03 20:32:46,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 48 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 20:32:46,417 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 103 flow [2024-06-03 20:32:46,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2024-06-03 20:32:46,418 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2024-06-03 20:32:46,418 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 103 flow [2024-06-03 20:32:46,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 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) [2024-06-03 20:32:46,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:46,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:46,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 20:32:46,419 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)] === [2024-06-03 20:32:46,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:46,420 INFO L85 PathProgramCache]: Analyzing trace with hash 381322780, now seen corresponding path program 1 times [2024-06-03 20:32:46,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:46,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312036172] [2024-06-03 20:32:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:46,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:46,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:46,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:46,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312036172] [2024-06-03 20:32:46,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312036172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:46,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:46,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:32:46,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597577402] [2024-06-03 20:32:46,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:46,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:32:46,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:46,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:32:46,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:32:46,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-03 20:32:46,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 103 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2024-06-03 20:32:46,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:46,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-03 20:32:46,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:46,902 INFO L124 PetriNetUnfolderBase]: 265/508 cut-off events. [2024-06-03 20:32:46,904 INFO L125 PetriNetUnfolderBase]: For 489/489 co-relation queries the response was YES. [2024-06-03 20:32:46,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 508 events. 265/508 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1837 event pairs, 50 based on Foata normal form. 18/522 useless extension candidates. Maximal degree in co-relation 900. Up to 228 conditions per place. [2024-06-03 20:32:46,908 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2024-06-03 20:32:46,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 309 flow [2024-06-03 20:32:46,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:32:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:32:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-03 20:32:46,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-03 20:32:46,910 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 103 flow. Second operand 7 states and 87 transitions. [2024-06-03 20:32:46,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 309 flow [2024-06-03 20:32:46,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 60 transitions, 273 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-03 20:32:46,912 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-06-03 20:32:46,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-06-03 20:32:46,913 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-06-03 20:32:46,914 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-06-03 20:32:46,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2024-06-03 20:32:46,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 20:32:46,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 20:32:46,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 20:32:46,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 20:32:46,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 20:32:46,918 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-06-03 20:32:46,922 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 20:32:46,922 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 20:32:46,926 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 20:32:46,927 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 20:32:46,928 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 08:32:46 BasicIcfg [2024-06-03 20:32:46,928 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 20:32:46,929 INFO L158 Benchmark]: Toolchain (without parser) took 4094.14ms. Allocated memory was 186.6MB in the beginning and 249.6MB in the end (delta: 62.9MB). Free memory was 148.9MB in the beginning and 120.9MB in the end (delta: 28.0MB). Peak memory consumption was 91.3MB. Max. memory is 16.1GB. [2024-06-03 20:32:46,929 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 186.6MB. Free memory is still 148.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:32:46,929 INFO L158 Benchmark]: Witness Parser took 0.27ms. Allocated memory is still 186.6MB. Free memory is still 101.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:32:46,930 INFO L158 Benchmark]: CACSL2BoogieTranslator took 709.20ms. Allocated memory is still 186.6MB. Free memory was 148.7MB in the beginning and 120.4MB in the end (delta: 28.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-03 20:32:46,930 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.08ms. Allocated memory is still 186.6MB. Free memory was 120.4MB in the beginning and 118.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 20:32:46,930 INFO L158 Benchmark]: Boogie Preprocessor took 64.11ms. Allocated memory is still 186.6MB. Free memory was 118.3MB in the beginning and 115.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-03 20:32:46,931 INFO L158 Benchmark]: RCFGBuilder took 831.68ms. Allocated memory is still 186.6MB. Free memory was 115.1MB in the beginning and 108.6MB in the end (delta: 6.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-03 20:32:46,931 INFO L158 Benchmark]: TraceAbstraction took 2409.18ms. Allocated memory was 186.6MB in the beginning and 249.6MB in the end (delta: 62.9MB). Free memory was 107.5MB in the beginning and 120.9MB in the end (delta: -13.4MB). Peak memory consumption was 51.6MB. Max. memory is 16.1GB. [2024-06-03 20:32:46,933 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 186.6MB. Free memory is still 148.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.27ms. Allocated memory is still 186.6MB. Free memory is still 101.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 709.20ms. Allocated memory is still 186.6MB. Free memory was 148.7MB in the beginning and 120.4MB in the end (delta: 28.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.08ms. Allocated memory is still 186.6MB. Free memory was 120.4MB in the beginning and 118.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.11ms. Allocated memory is still 186.6MB. Free memory was 118.3MB in the beginning and 115.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 831.68ms. Allocated memory is still 186.6MB. Free memory was 115.1MB in the beginning and 108.6MB in the end (delta: 6.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2409.18ms. Allocated memory was 186.6MB in the beginning and 249.6MB in the end (delta: 62.9MB). Free memory was 107.5MB in the beginning and 120.9MB in the end (delta: -13.4MB). Peak memory consumption was 51.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1022]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1023]: 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, 45 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: 2.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 204 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 190 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 404 IncrementalHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 3 mSDtfsCounter, 404 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=4, InterpolantAutomatonStates: 23, 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, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2024-06-03 20:32:46,961 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