./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:06:19,463 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:06:19,647 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:06:19,654 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:06:19,655 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:06:19,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:06:19,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:06:19,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:06:19,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:06:19,693 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:06:19,693 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:06:19,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:06:19,694 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:06:19,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:06:19,696 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:06:19,696 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:06:19,696 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:06:19,696 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:06:19,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:06:19,697 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:06:19,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:06:19,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:06:19,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:06:19,698 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:06:19,698 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:06:19,698 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:06:19,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:06:19,698 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:06:19,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:06:19,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:06:19,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:06:19,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:06:19,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:06:19,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:06:19,701 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:06:19,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:06:19,701 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:06:19,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:06:19,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:06:19,702 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:06:19,702 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:06:19,702 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:06:19,702 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:06:19,702 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:06:19,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:06:19,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:06:19,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:06:19,919 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:06:19,919 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:06:19,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2024-06-28 01:06:21,007 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:06:21,215 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:06:21,220 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2024-06-28 01:06:21,230 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdc711052/d47b581167b14fe29ed2f28eb98e9a63/FLAG3c70680a7 [2024-06-28 01:06:21,241 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdc711052/d47b581167b14fe29ed2f28eb98e9a63 [2024-06-28 01:06:21,243 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:06:21,244 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:06:21,244 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.yml/witness.yml [2024-06-28 01:06:21,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:06:21,343 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:06:21,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:06:21,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:06:21,352 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:06:21,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:06:21" (1/2) ... [2024-06-28 01:06:21,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@548cf04d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:21, skipping insertion in model container [2024-06-28 01:06:21,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:06:21" (1/2) ... [2024-06-28 01:06:21,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a6df7db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:21, skipping insertion in model container [2024-06-28 01:06:21,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:06:21" (2/2) ... [2024-06-28 01:06:21,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@548cf04d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21, skipping insertion in model container [2024-06-28 01:06:21,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:06:21" (2/2) ... [2024-06-28 01:06:21,356 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:06:21,399 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:06:21,400 INFO L97 edCorrectnessWitness]: Location invariant before [L735-L735] ((((! multithreaded || (B_locked || (-999 <= g && -999 <= h))) && (! multithreaded || (A_locked || (-1016 <= h && -999 <= g)))) && (! multithreaded || -968 <= i)) && (! multithreaded || -999 <= g)) && (! multithreaded || -1016 <= h) [2024-06-28 01:06:21,401 INFO L103 edCorrectnessWitness]: ghost_variable A_locked = 0 [2024-06-28 01:06:21,401 INFO L103 edCorrectnessWitness]: ghost_variable B_locked = 0 [2024-06-28 01:06:21,401 INFO L103 edCorrectnessWitness]: ghost_variable C_locked = 0 [2024-06-28 01:06:21,401 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:06:21,402 INFO L106 edCorrectnessWitness]: ghost_update [L734-L734] multithreaded = 1; [2024-06-28 01:06:21,402 INFO L106 edCorrectnessWitness]: ghost_update [L744-L744] B_locked = 0; [2024-06-28 01:06:21,402 INFO L106 edCorrectnessWitness]: ghost_update [L747-L747] C_locked = 0; [2024-06-28 01:06:21,402 INFO L106 edCorrectnessWitness]: ghost_update [L745-L745] C_locked = 1; [2024-06-28 01:06:21,402 INFO L106 edCorrectnessWitness]: ghost_update [L714-L714] C_locked = 1; [2024-06-28 01:06:21,402 INFO L106 edCorrectnessWitness]: ghost_update [L735-L735] B_locked = 1; [2024-06-28 01:06:21,403 INFO L106 edCorrectnessWitness]: ghost_update [L715-L715] A_locked = 1; [2024-06-28 01:06:21,403 INFO L106 edCorrectnessWitness]: ghost_update [L725-L725] A_locked = 0; [2024-06-28 01:06:21,403 INFO L106 edCorrectnessWitness]: ghost_update [L719-L719] B_locked = 1; [2024-06-28 01:06:21,403 INFO L106 edCorrectnessWitness]: ghost_update [L740-L740] A_locked = 0; [2024-06-28 01:06:21,403 INFO L106 edCorrectnessWitness]: ghost_update [L741-L741] A_locked = 1; [2024-06-28 01:06:21,403 INFO L106 edCorrectnessWitness]: ghost_update [L736-L736] A_locked = 1; [2024-06-28 01:06:21,403 INFO L106 edCorrectnessWitness]: ghost_update [L743-L743] A_locked = 0; [2024-06-28 01:06:21,404 INFO L106 edCorrectnessWitness]: ghost_update [L726-L726] C_locked = 0; [2024-06-28 01:06:21,404 INFO L106 edCorrectnessWitness]: ghost_update [L721-L721] B_locked = 0; [2024-06-28 01:06:21,443 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:06:21,604 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2024-06-28 01:06:21,770 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:06:21,781 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:06:21,808 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:06:21,840 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:06:21,894 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:06:21,894 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21 WrapperNode [2024-06-28 01:06:21,895 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:06:21,895 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:06:21,896 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:06:21,896 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:06:21,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,929 INFO L138 Inliner]: procedures = 165, calls = 46, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 183 [2024-06-28 01:06:21,930 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:06:21,931 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:06:21,931 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:06:21,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:06:21,939 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,947 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,971 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 5, 5, 5]. 29 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-06-28 01:06:21,972 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,972 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,976 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,981 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,982 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,983 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:21,985 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:06:21,986 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:06:21,995 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:06:21,995 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:06:21,996 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (1/1) ... [2024-06-28 01:06:22,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:06:22,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:06:22,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:06:22,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:06:22,057 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-28 01:06:22,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:06:22,057 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-28 01:06:22,057 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-28 01:06:22,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:06:22,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:06:22,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-28 01:06:22,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-28 01:06:22,058 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-28 01:06:22,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:06:22,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:06:22,059 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:06:22,169 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:06:22,170 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:06:22,399 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:06:22,399 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:06:22,601 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:06:22,602 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:06:22,603 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:06:22 BoogieIcfgContainer [2024-06-28 01:06:22,603 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:06:22,605 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:06:22,605 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:06:22,608 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:06:22,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:06:21" (1/4) ... [2024-06-28 01:06:22,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df45844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:06:22, skipping insertion in model container [2024-06-28 01:06:22,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:06:21" (2/4) ... [2024-06-28 01:06:22,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df45844 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:06:22, skipping insertion in model container [2024-06-28 01:06:22,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:21" (3/4) ... [2024-06-28 01:06:22,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df45844 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:06:22, skipping insertion in model container [2024-06-28 01:06:22,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:06:22" (4/4) ... [2024-06-28 01:06:22,611 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2024-06-28 01:06:22,624 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:06:22,624 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:06:22,624 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:06:22,665 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:06:22,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 57 transitions, 118 flow [2024-06-28 01:06:22,718 INFO L124 PetriNetUnfolderBase]: 4/57 cut-off events. [2024-06-28 01:06:22,718 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:06:22,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 57 events. 4/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2024-06-28 01:06:22,721 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 57 transitions, 118 flow [2024-06-28 01:06:22,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 55 transitions, 113 flow [2024-06-28 01:06:22,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:06:22,734 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;@1737416a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:06:22,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 01:06:22,738 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:06:22,738 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 01:06:22,738 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:06:22,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:22,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-28 01:06:22,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:06:22,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:22,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1694196477, now seen corresponding path program 1 times [2024-06-28 01:06:22,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:22,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529847829] [2024-06-28 01:06:22,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:22,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:23,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:23,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:23,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529847829] [2024-06-28 01:06:23,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529847829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:23,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:23,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:06:23,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119396578] [2024-06-28 01:06:23,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:23,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:06:23,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:23,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:06:23,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:06:23,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-06-28 01:06:23,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:23,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:23,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-06-28 01:06:23,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:23,316 INFO L124 PetriNetUnfolderBase]: 215/599 cut-off events. [2024-06-28 01:06:23,317 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-28 01:06:23,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 599 events. 215/599 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3035 event pairs, 74 based on Foata normal form. 57/629 useless extension candidates. Maximal degree in co-relation 1043. Up to 376 conditions per place. [2024-06-28 01:06:23,322 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 43 selfloop transitions, 3 changer transitions 2/67 dead transitions. [2024-06-28 01:06:23,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 231 flow [2024-06-28 01:06:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:06:23,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:06:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-06-28 01:06:23,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.695906432748538 [2024-06-28 01:06:23,335 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 113 flow. Second operand 3 states and 119 transitions. [2024-06-28 01:06:23,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 231 flow [2024-06-28 01:06:23,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 67 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:06:23,342 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 123 flow [2024-06-28 01:06:23,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-06-28 01:06:23,363 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-28 01:06:23,363 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 123 flow [2024-06-28 01:06:23,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:23,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:23,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:23,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:06:23,364 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:06:23,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:23,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1577921117, now seen corresponding path program 1 times [2024-06-28 01:06:23,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:23,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94744906] [2024-06-28 01:06:23,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:23,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:23,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:23,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:23,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94744906] [2024-06-28 01:06:23,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94744906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:23,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:23,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:06:23,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083742471] [2024-06-28 01:06:23,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:23,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:06:23,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:23,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:06:23,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:06:23,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-06-28 01:06:23,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:23,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:23,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-06-28 01:06:23,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:23,671 INFO L124 PetriNetUnfolderBase]: 272/670 cut-off events. [2024-06-28 01:06:23,677 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-06-28 01:06:23,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 670 events. 272/670 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3199 event pairs, 99 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 1296. Up to 340 conditions per place. [2024-06-28 01:06:23,681 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 49 selfloop transitions, 11 changer transitions 11/84 dead transitions. [2024-06-28 01:06:23,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 84 transitions, 332 flow [2024-06-28 01:06:23,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:06:23,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:06:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-06-28 01:06:23,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543859649122806 [2024-06-28 01:06:23,683 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 123 flow. Second operand 5 states and 158 transitions. [2024-06-28 01:06:23,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 84 transitions, 332 flow [2024-06-28 01:06:23,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:06:23,684 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 170 flow [2024-06-28 01:06:23,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-06-28 01:06:23,685 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-28 01:06:23,685 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 170 flow [2024-06-28 01:06:23,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:23,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:23,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:23,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:06:23,686 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:06:23,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:23,687 INFO L85 PathProgramCache]: Analyzing trace with hash -415003391, now seen corresponding path program 1 times [2024-06-28 01:06:23,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:23,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110310007] [2024-06-28 01:06:23,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:23,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:23,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:23,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110310007] [2024-06-28 01:06:23,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110310007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:23,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:23,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:06:23,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449912632] [2024-06-28 01:06:23,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:23,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:06:23,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:23,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:06:23,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:06:23,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-06-28 01:06:23,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:23,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:23,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-06-28 01:06:23,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:23,940 INFO L124 PetriNetUnfolderBase]: 209/563 cut-off events. [2024-06-28 01:06:23,941 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2024-06-28 01:06:23,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 563 events. 209/563 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2900 event pairs, 69 based on Foata normal form. 15/574 useless extension candidates. Maximal degree in co-relation 1251. Up to 204 conditions per place. [2024-06-28 01:06:23,943 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 46 selfloop transitions, 10 changer transitions 32/101 dead transitions. [2024-06-28 01:06:23,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 460 flow [2024-06-28 01:06:23,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:06:23,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:06:23,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-06-28 01:06:23,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4758771929824561 [2024-06-28 01:06:23,945 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 170 flow. Second operand 8 states and 217 transitions. [2024-06-28 01:06:23,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 460 flow [2024-06-28 01:06:23,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 101 transitions, 460 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 01:06:23,948 INFO L231 Difference]: Finished difference. Result has 73 places, 53 transitions, 203 flow [2024-06-28 01:06:23,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=203, PETRI_PLACES=73, PETRI_TRANSITIONS=53} [2024-06-28 01:06:23,949 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2024-06-28 01:06:23,949 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 53 transitions, 203 flow [2024-06-28 01:06:23,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:23,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:23,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:23,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:06:23,950 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:06:23,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:23,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1376141804, now seen corresponding path program 1 times [2024-06-28 01:06:23,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:23,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464392796] [2024-06-28 01:06:23,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:23,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:24,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:24,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464392796] [2024-06-28 01:06:24,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464392796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:24,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:24,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:06:24,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383609432] [2024-06-28 01:06:24,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:24,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:06:24,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:24,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:06:24,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:06:24,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-06-28 01:06:24,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 53 transitions, 203 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:24,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:24,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-06-28 01:06:24,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:24,159 INFO L124 PetriNetUnfolderBase]: 158/412 cut-off events. [2024-06-28 01:06:24,160 INFO L125 PetriNetUnfolderBase]: For 342/342 co-relation queries the response was YES. [2024-06-28 01:06:24,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 412 events. 158/412 cut-off events. For 342/342 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1891 event pairs, 106 based on Foata normal form. 11/421 useless extension candidates. Maximal degree in co-relation 1041. Up to 248 conditions per place. [2024-06-28 01:06:24,162 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 48 selfloop transitions, 13 changer transitions 2/76 dead transitions. [2024-06-28 01:06:24,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 76 transitions, 403 flow [2024-06-28 01:06:24,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:06:24,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:06:24,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-06-28 01:06:24,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512280701754386 [2024-06-28 01:06:24,164 INFO L175 Difference]: Start difference. First operand has 73 places, 53 transitions, 203 flow. Second operand 5 states and 146 transitions. [2024-06-28 01:06:24,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 76 transitions, 403 flow [2024-06-28 01:06:24,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 367 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:06:24,167 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 256 flow [2024-06-28 01:06:24,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2024-06-28 01:06:24,168 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2024-06-28 01:06:24,168 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 256 flow [2024-06-28 01:06:24,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:24,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:24,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:24,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:06:24,169 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:06:24,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:24,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1912534793, now seen corresponding path program 1 times [2024-06-28 01:06:24,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:24,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312337949] [2024-06-28 01:06:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:24,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:24,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:24,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:24,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312337949] [2024-06-28 01:06:24,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312337949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:24,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:24,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:06:24,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831245837] [2024-06-28 01:06:24,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:24,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:06:24,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:24,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:06:24,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:06:24,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-06-28 01:06:24,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 256 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:24,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:24,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-06-28 01:06:24,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:24,362 INFO L124 PetriNetUnfolderBase]: 122/356 cut-off events. [2024-06-28 01:06:24,362 INFO L125 PetriNetUnfolderBase]: For 461/469 co-relation queries the response was YES. [2024-06-28 01:06:24,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 356 events. 122/356 cut-off events. For 461/469 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1698 event pairs, 40 based on Foata normal form. 5/358 useless extension candidates. Maximal degree in co-relation 938. Up to 177 conditions per place. [2024-06-28 01:06:24,364 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 28 selfloop transitions, 2 changer transitions 22/66 dead transitions. [2024-06-28 01:06:24,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 66 transitions, 366 flow [2024-06-28 01:06:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:06:24,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:06:24,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-06-28 01:06:24,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-28 01:06:24,365 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 256 flow. Second operand 5 states and 150 transitions. [2024-06-28 01:06:24,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 66 transitions, 366 flow [2024-06-28 01:06:24,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 66 transitions, 361 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 01:06:24,367 INFO L231 Difference]: Finished difference. Result has 74 places, 41 transitions, 154 flow [2024-06-28 01:06:24,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=74, PETRI_TRANSITIONS=41} [2024-06-28 01:06:24,368 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-06-28 01:06:24,368 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 41 transitions, 154 flow [2024-06-28 01:06:24,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:24,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:24,369 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] [2024-06-28 01:06:24,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:06:24,369 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:06:24,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:24,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1457838437, now seen corresponding path program 1 times [2024-06-28 01:06:24,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:24,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764213526] [2024-06-28 01:06:24,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:24,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:24,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:24,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:24,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764213526] [2024-06-28 01:06:24,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764213526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:24,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:24,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:06:24,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411441762] [2024-06-28 01:06:24,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:24,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:06:24,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:24,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:06:24,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:06:24,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-06-28 01:06:24,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 41 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:24,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:24,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-06-28 01:06:24,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:24,515 INFO L124 PetriNetUnfolderBase]: 109/280 cut-off events. [2024-06-28 01:06:24,516 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES. [2024-06-28 01:06:24,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 280 events. 109/280 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1056 event pairs, 41 based on Foata normal form. 8/286 useless extension candidates. Maximal degree in co-relation 713. Up to 146 conditions per place. [2024-06-28 01:06:24,517 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 39 selfloop transitions, 10 changer transitions 0/58 dead transitions. [2024-06-28 01:06:24,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 307 flow [2024-06-28 01:06:24,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:06:24,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:06:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 01:06:24,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43567251461988304 [2024-06-28 01:06:24,518 INFO L175 Difference]: Start difference. First operand has 74 places, 41 transitions, 154 flow. Second operand 6 states and 149 transitions. [2024-06-28 01:06:24,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 307 flow [2024-06-28 01:06:24,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 258 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 01:06:24,520 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 143 flow [2024-06-28 01:06:24,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=143, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-28 01:06:24,521 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -4 predicate places. [2024-06-28 01:06:24,521 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 143 flow [2024-06-28 01:06:24,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:24,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:24,521 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] [2024-06-28 01:06:24,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:06:24,521 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:06:24,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:24,522 INFO L85 PathProgramCache]: Analyzing trace with hash -2101252808, now seen corresponding path program 1 times [2024-06-28 01:06:24,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:24,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882968857] [2024-06-28 01:06:24,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:24,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:24,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:24,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882968857] [2024-06-28 01:06:24,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882968857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:24,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:24,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:06:24,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648468436] [2024-06-28 01:06:24,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:24,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:06:24,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:24,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:06:24,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:06:24,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-06-28 01:06:24,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:24,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:24,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-06-28 01:06:24,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:24,689 INFO L124 PetriNetUnfolderBase]: 67/211 cut-off events. [2024-06-28 01:06:24,689 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-06-28 01:06:24,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 211 events. 67/211 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 757 event pairs, 22 based on Foata normal form. 10/219 useless extension candidates. Maximal degree in co-relation 486. Up to 90 conditions per place. [2024-06-28 01:06:24,690 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 37 selfloop transitions, 8 changer transitions 2/58 dead transitions. [2024-06-28 01:06:24,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 293 flow [2024-06-28 01:06:24,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:06:24,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:06:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-06-28 01:06:24,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-28 01:06:24,692 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 143 flow. Second operand 5 states and 152 transitions. [2024-06-28 01:06:24,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 293 flow [2024-06-28 01:06:24,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 284 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 01:06:24,693 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 160 flow [2024-06-28 01:06:24,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2024-06-28 01:06:24,694 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-28 01:06:24,694 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 160 flow [2024-06-28 01:06:24,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:24,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:24,695 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, 1] [2024-06-28 01:06:24,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:06:24,695 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:06:24,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:24,695 INFO L85 PathProgramCache]: Analyzing trace with hash 831749652, now seen corresponding path program 1 times [2024-06-28 01:06:24,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:24,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436730984] [2024-06-28 01:06:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:24,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:24,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:24,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436730984] [2024-06-28 01:06:24,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436730984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:24,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:24,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:06:24,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439897892] [2024-06-28 01:06:24,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:24,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:06:24,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:24,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:06:24,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:06:24,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-06-28 01:06:24,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:24,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:24,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-06-28 01:06:24,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:24,851 INFO L124 PetriNetUnfolderBase]: 66/218 cut-off events. [2024-06-28 01:06:24,851 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-06-28 01:06:24,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 218 events. 66/218 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 776 event pairs, 29 based on Foata normal form. 2/218 useless extension candidates. Maximal degree in co-relation 530. Up to 99 conditions per place. [2024-06-28 01:06:24,852 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 34 selfloop transitions, 6 changer transitions 3/53 dead transitions. [2024-06-28 01:06:24,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 283 flow [2024-06-28 01:06:24,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:06:24,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:06:24,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-06-28 01:06:24,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2024-06-28 01:06:24,853 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 160 flow. Second operand 5 states and 147 transitions. [2024-06-28 01:06:24,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 283 flow [2024-06-28 01:06:24,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:06:24,854 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 162 flow [2024-06-28 01:06:24,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2024-06-28 01:06:24,855 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-06-28 01:06:24,855 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 162 flow [2024-06-28 01:06:24,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:24,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:24,856 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, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:24,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:06:24,856 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:06:24,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:24,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1363427227, now seen corresponding path program 1 times [2024-06-28 01:06:24,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:24,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025541754] [2024-06-28 01:06:24,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:24,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:24,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:24,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025541754] [2024-06-28 01:06:24,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025541754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:24,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:24,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:06:24,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836866164] [2024-06-28 01:06:24,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:24,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:06:24,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:24,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:06:24,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:06:24,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-06-28 01:06:24,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:24,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:24,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-06-28 01:06:24,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:25,046 INFO L124 PetriNetUnfolderBase]: 74/209 cut-off events. [2024-06-28 01:06:25,047 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2024-06-28 01:06:25,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 209 events. 74/209 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 689 event pairs, 14 based on Foata normal form. 12/219 useless extension candidates. Maximal degree in co-relation 578. Up to 47 conditions per place. [2024-06-28 01:06:25,047 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2024-06-28 01:06:25,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 344 flow [2024-06-28 01:06:25,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:06:25,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:06:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-28 01:06:25,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39571150097465885 [2024-06-28 01:06:25,049 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 162 flow. Second operand 9 states and 203 transitions. [2024-06-28 01:06:25,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 344 flow [2024-06-28 01:06:25,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 323 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 01:06:25,050 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2024-06-28 01:06:25,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2024-06-28 01:06:25,051 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-28 01:06:25,051 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2024-06-28 01:06:25,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:25,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-06-28 01:06:25,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 8 remaining) [2024-06-28 01:06:25,053 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2024-06-28 01:06:25,054 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2024-06-28 01:06:25,054 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2024-06-28 01:06:25,054 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2024-06-28 01:06:25,054 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2024-06-28 01:06:25,054 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2024-06-28 01:06:25,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:06:25,060 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:25,064 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 01:06:25,064 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 01:06:25,068 INFO L507 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-06-28 01:06:25,068 INFO L508 ceAbstractionStarter]: WitnessConsidered=1 [2024-06-28 01:06:25,069 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 01:06:25 BasicIcfg [2024-06-28 01:06:25,069 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 01:06:25,069 INFO L158 Benchmark]: Toolchain (without parser) took 3726.71ms. Allocated memory was 151.0MB in the beginning and 257.9MB in the end (delta: 107.0MB). Free memory was 73.3MB in the beginning and 221.2MB in the end (delta: -147.9MB). Peak memory consumption was 112.2MB. Max. memory is 16.1GB. [2024-06-28 01:06:25,069 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:06:25,070 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 151.0MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:06:25,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 551.25ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 73.3MB in the beginning and 148.9MB in the end (delta: -75.6MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2024-06-28 01:06:25,070 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.65ms. Allocated memory is still 182.5MB. Free memory was 148.9MB in the beginning and 145.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 01:06:25,070 INFO L158 Benchmark]: Boogie Preprocessor took 54.47ms. Allocated memory is still 182.5MB. Free memory was 145.7MB in the beginning and 143.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 01:06:25,071 INFO L158 Benchmark]: RCFGBuilder took 617.23ms. Allocated memory is still 182.5MB. Free memory was 143.6MB in the beginning and 88.1MB in the end (delta: 55.6MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2024-06-28 01:06:25,071 INFO L158 Benchmark]: TraceAbstraction took 2463.79ms. Allocated memory was 182.5MB in the beginning and 257.9MB in the end (delta: 75.5MB). Free memory was 87.0MB in the beginning and 221.2MB in the end (delta: -134.2MB). Peak memory consumption was 93.1MB. Max. memory is 16.1GB. [2024-06-28 01:06:25,072 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 151.0MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 551.25ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 73.3MB in the beginning and 148.9MB in the end (delta: -75.6MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.65ms. Allocated memory is still 182.5MB. Free memory was 148.9MB in the beginning and 145.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.47ms. Allocated memory is still 182.5MB. Free memory was 145.7MB in the beginning and 143.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 617.23ms. Allocated memory is still 182.5MB. Free memory was 143.6MB in the beginning and 88.1MB in the end (delta: 55.6MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2463.79ms. Allocated memory was 182.5MB in the beginning and 257.9MB in the end (delta: 75.5MB). Free memory was 87.0MB in the beginning and 221.2MB in the end (delta: -134.2MB). Peak memory consumption was 93.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 735]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 82 locations, 8 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: 2.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 530 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 466 mSDsluCounter, 126 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 79 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1033 IncrementalHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 47 mSDtfsCounter, 1033 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred in iteration=4, InterpolantAutomatonStates: 51, 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, 0.8s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 159 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 01:06:25,091 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