./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/36-apron_21-traces-cluster-based_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/36-apron_21-traces-cluster-based_true.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 21:55:48,681 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 21:55:48,753 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 21:55:48,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 21:55:48,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 21:55:49,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 21:55:49,053 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 21:55:49,053 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 21:55:49,054 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 21:55:49,057 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 21:55:49,057 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 21:55:49,057 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 21:55:49,058 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 21:55:49,059 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 21:55:49,059 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 21:55:49,059 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 21:55:49,060 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 21:55:49,060 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 21:55:49,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 21:55:49,060 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 21:55:49,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 21:55:49,061 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 21:55:49,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 21:55:49,061 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 21:55:49,062 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 21:55:49,062 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 21:55:49,062 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 21:55:49,062 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 21:55:49,063 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 21:55:49,063 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 21:55:49,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 21:55:49,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 21:55:49,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:55:49,064 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 21:55:49,064 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 21:55:49,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 21:55:49,065 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 21:55:49,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 21:55:49,065 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 21:55:49,065 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 21:55:49,066 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 21:55:49,066 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 21:55:49,066 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 21:55:49,066 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 21:55:49,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 21:55:49,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 21:55:49,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 21:55:49,318 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 21:55:49,319 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 21:55:49,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/36-apron_21-traces-cluster-based_true.yml/witness.yml [2024-06-27 21:55:49,437 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 21:55:49,437 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 21:55:49,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-06-27 21:55:50,588 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 21:55:50,802 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 21:55:50,803 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-06-27 21:55:50,812 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6824fbbe6/aac62908bd3f46f8b30e76049ca183a1/FLAGabac16183 [2024-06-27 21:55:50,825 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6824fbbe6/aac62908bd3f46f8b30e76049ca183a1 [2024-06-27 21:55:50,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 21:55:50,827 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 21:55:50,829 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 21:55:50,829 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 21:55:50,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 21:55:50,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:55:49" (1/2) ... [2024-06-27 21:55:50,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e245a35 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:55:50, skipping insertion in model container [2024-06-27 21:55:50,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:55:49" (1/2) ... [2024-06-27 21:55:50,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@507d342f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:55:50, skipping insertion in model container [2024-06-27 21:55:50,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:55:50" (2/2) ... [2024-06-27 21:55:50,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e245a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:55:50, skipping insertion in model container [2024-06-27 21:55:50,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:55:50" (2/2) ... [2024-06-27 21:55:50,837 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 21:55:50,877 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 21:55:50,878 INFO L97 edCorrectnessWitness]: Location invariant before [L730-L730] (! multithreaded || (B_locked || ((0LL - (long long )g) + (long long )h >= 0LL && (long long )g - (long long )h >= 0LL))) && (! multithreaded || (A_locked || ((17LL - (long long )g) + (long long )h >= 0LL && (long long )g - (long long )h >= 0LL))) [2024-06-27 21:55:50,878 INFO L97 edCorrectnessWitness]: Location invariant before [L728-L728] (! multithreaded || (B_locked || ((0LL - (long long )g) + (long long )h >= 0LL && (long long )g - (long long )h >= 0LL))) && (! multithreaded || (A_locked || ((17LL - (long long )g) + (long long )h >= 0LL && (long long )g - (long long )h >= 0LL))) [2024-06-27 21:55:50,879 INFO L97 edCorrectnessWitness]: Location invariant before [L729-L729] (! multithreaded || (B_locked || ((0LL - (long long )g) + (long long )h >= 0LL && (long long )g - (long long )h >= 0LL))) && (! multithreaded || (A_locked || ((17LL - (long long )g) + (long long )h >= 0LL && (long long )g - (long long )h >= 0LL))) [2024-06-27 21:55:50,879 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 21:55:50,879 INFO L103 edCorrectnessWitness]: ghost_variable A_locked = 0 [2024-06-27 21:55:50,879 INFO L103 edCorrectnessWitness]: ghost_variable B_locked = 0 [2024-06-27 21:55:50,879 INFO L106 edCorrectnessWitness]: ghost_update [L719-L719] B_locked = 0; [2024-06-27 21:55:50,879 INFO L106 edCorrectnessWitness]: ghost_update [L707-L707] A_locked = 0; [2024-06-27 21:55:50,879 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] A_locked = 0; [2024-06-27 21:55:50,879 INFO L106 edCorrectnessWitness]: ghost_update [L694-L694] A_locked = 1; [2024-06-27 21:55:50,880 INFO L106 edCorrectnessWitness]: ghost_update [L727-L727] multithreaded = 1; [2024-06-27 21:55:50,880 INFO L106 edCorrectnessWitness]: ghost_update [L735-L735] B_locked = 0; [2024-06-27 21:55:50,880 INFO L106 edCorrectnessWitness]: ghost_update [L715-L715] A_locked = 1; [2024-06-27 21:55:50,880 INFO L106 edCorrectnessWitness]: ghost_update [L736-L736] A_locked = 0; [2024-06-27 21:55:50,880 INFO L106 edCorrectnessWitness]: ghost_update [L697-L697] B_locked = 0; [2024-06-27 21:55:50,880 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] B_locked = 1; [2024-06-27 21:55:50,880 INFO L106 edCorrectnessWitness]: ghost_update [L690-L690] A_locked = 1; [2024-06-27 21:55:50,881 INFO L106 edCorrectnessWitness]: ghost_update [L714-L714] B_locked = 1; [2024-06-27 21:55:50,881 INFO L106 edCorrectnessWitness]: ghost_update [L730-L730] A_locked = 1; [2024-06-27 21:55:50,881 INFO L106 edCorrectnessWitness]: ghost_update [L704-L704] A_locked = 1; [2024-06-27 21:55:50,881 INFO L106 edCorrectnessWitness]: ghost_update [L718-L718] A_locked = 0; [2024-06-27 21:55:50,882 INFO L106 edCorrectnessWitness]: ghost_update [L733-L733] B_locked = 1; [2024-06-27 21:55:50,882 INFO L106 edCorrectnessWitness]: ghost_update [L696-L696] A_locked = 0; [2024-06-27 21:55:50,918 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 21:55:51,060 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-06-27 21:55:51,207 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:55:51,217 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 21:55:51,250 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 21:55:51,296 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:55:51,329 INFO L206 MainTranslator]: Completed translation [2024-06-27 21:55:51,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:55:51 WrapperNode [2024-06-27 21:55:51,330 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 21:55:51,331 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 21:55:51,331 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 21:55:51,331 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 21:55:51,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:55:51" (1/1) ... [2024-06-27 21:55:51,346 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:55:51" (1/1) ... [2024-06-27 21:55:51,364 INFO L138 Inliner]: procedures = 165, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 155 [2024-06-27 21:55:51,365 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 21:55:51,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 21:55:51,365 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 21:55:51,365 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 21:55:51,373 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:55:51" (1/1) ... [2024-06-27 21:55:51,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:55:51" (1/1) ... [2024-06-27 21:55:51,376 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:55:51" (1/1) ... [2024-06-27 21:55:51,388 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-06-27 21:55:51,388 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:55:51" (1/1) ... [2024-06-27 21:55:51,388 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:55:51" (1/1) ... [2024-06-27 21:55:51,394 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:55:51" (1/1) ... [2024-06-27 21:55:51,396 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:55:51" (1/1) ... [2024-06-27 21:55:51,397 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:55:51" (1/1) ... [2024-06-27 21:55:51,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:55:51" (1/1) ... [2024-06-27 21:55:51,400 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 21:55:51,401 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 21:55:51,401 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 21:55:51,401 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 21:55:51,402 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:55:51" (1/1) ... [2024-06-27 21:55:51,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:55:51,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:55:51,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 21:55:51,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 21:55:51,590 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-06-27 21:55:51,590 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-06-27 21:55:51,590 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-27 21:55:51,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 21:55:51,591 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-06-27 21:55:51,591 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-06-27 21:55:51,591 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-27 21:55:51,591 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-27 21:55:51,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 21:55:51,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 21:55:51,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-27 21:55:51,592 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-27 21:55:51,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 21:55:51,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 21:55:51,594 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 21:55:51,726 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 21:55:51,728 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 21:55:52,011 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 21:55:52,011 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 21:55:52,132 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 21:55:52,135 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 21:55:52,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:55:52 BoogieIcfgContainer [2024-06-27 21:55:52,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 21:55:52,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 21:55:52,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 21:55:52,140 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 21:55:52,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:55:49" (1/4) ... [2024-06-27 21:55:52,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509d6376 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:55:52, skipping insertion in model container [2024-06-27 21:55:52,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 09:55:50" (2/4) ... [2024-06-27 21:55:52,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509d6376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:55:52, skipping insertion in model container [2024-06-27 21:55:52,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:55:51" (3/4) ... [2024-06-27 21:55:52,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509d6376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:55:52, skipping insertion in model container [2024-06-27 21:55:52,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:55:52" (4/4) ... [2024-06-27 21:55:52,144 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2024-06-27 21:55:52,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 21:55:52,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-06-27 21:55:52,159 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 21:55:52,197 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 21:55:52,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 75 transitions, 162 flow [2024-06-27 21:55:52,274 INFO L124 PetriNetUnfolderBase]: 5/72 cut-off events. [2024-06-27 21:55:52,275 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:55:52,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 5/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2024-06-27 21:55:52,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 75 transitions, 162 flow [2024-06-27 21:55:52,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 72 transitions, 153 flow [2024-06-27 21:55:52,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 21:55:52,302 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;@5c009812, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 21:55:52,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-06-27 21:55:52,305 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 21:55:52,306 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 21:55:52,306 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:55:52,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:52,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 21:55:52,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-27 21:55:52,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:52,312 INFO L85 PathProgramCache]: Analyzing trace with hash 412018404, now seen corresponding path program 1 times [2024-06-27 21:55:52,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:52,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485851646] [2024-06-27 21:55:52,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:52,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:55:52,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:52,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485851646] [2024-06-27 21:55:52,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485851646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:52,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:52,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 21:55:52,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267745727] [2024-06-27 21:55:52,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:52,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:55:52,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:52,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:55:52,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:55:52,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 75 [2024-06-27 21:55:52,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:52,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:52,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 75 [2024-06-27 21:55:52,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:55,342 INFO L124 PetriNetUnfolderBase]: 23106/37549 cut-off events. [2024-06-27 21:55:55,342 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-06-27 21:55:55,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69956 conditions, 37549 events. 23106/37549 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 299048 event pairs, 9120 based on Foata normal form. 4044/40504 useless extension candidates. Maximal degree in co-relation 69944. Up to 19929 conditions per place. [2024-06-27 21:55:55,538 INFO L140 encePairwiseOnDemand]: 66/75 looper letters, 74 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2024-06-27 21:55:55,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 99 transitions, 365 flow [2024-06-27 21:55:55,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:55:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:55:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-06-27 21:55:55,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-06-27 21:55:55,550 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 153 flow. Second operand 3 states and 165 transitions. [2024-06-27 21:55:55,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 99 transitions, 365 flow [2024-06-27 21:55:55,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 360 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 21:55:55,557 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 154 flow [2024-06-27 21:55:55,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2024-06-27 21:55:55,562 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 0 predicate places. [2024-06-27 21:55:55,562 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 154 flow [2024-06-27 21:55:55,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:55,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:55,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:55,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 21:55:55,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-27 21:55:55,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:55,564 INFO L85 PathProgramCache]: Analyzing trace with hash -595804576, now seen corresponding path program 1 times [2024-06-27 21:55:55,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:55,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228817016] [2024-06-27 21:55:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:55,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:55:55,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:55,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228817016] [2024-06-27 21:55:55,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228817016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:55,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:55,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:55:55,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114025828] [2024-06-27 21:55:55,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:55,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:55:55,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:55,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:55:55,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:55:55,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 75 [2024-06-27 21:55:55,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:55,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:55,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 75 [2024-06-27 21:55:55,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:00,072 INFO L124 PetriNetUnfolderBase]: 45329/75642 cut-off events. [2024-06-27 21:56:00,072 INFO L125 PetriNetUnfolderBase]: For 1764/1764 co-relation queries the response was YES. [2024-06-27 21:56:00,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142941 conditions, 75642 events. 45329/75642 cut-off events. For 1764/1764 co-relation queries the response was YES. Maximal size of possible extension queue 2394. Compared 679605 event pairs, 11597 based on Foata normal form. 309/72573 useless extension candidates. Maximal degree in co-relation 142928. Up to 23008 conditions per place. [2024-06-27 21:56:00,475 INFO L140 encePairwiseOnDemand]: 54/75 looper letters, 108 selfloop transitions, 21 changer transitions 0/151 dead transitions. [2024-06-27 21:56:00,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 151 transitions, 598 flow [2024-06-27 21:56:00,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:56:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:56:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 282 transitions. [2024-06-27 21:56:00,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6266666666666667 [2024-06-27 21:56:00,482 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 154 flow. Second operand 6 states and 282 transitions. [2024-06-27 21:56:00,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 151 transitions, 598 flow [2024-06-27 21:56:00,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 151 transitions, 590 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 21:56:00,635 INFO L231 Difference]: Finished difference. Result has 83 places, 87 transitions, 307 flow [2024-06-27 21:56:00,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=83, PETRI_TRANSITIONS=87} [2024-06-27 21:56:00,635 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2024-06-27 21:56:00,636 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 87 transitions, 307 flow [2024-06-27 21:56:00,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:56:00,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:00,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:00,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 21:56:00,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-27 21:56:00,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:00,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1686637682, now seen corresponding path program 1 times [2024-06-27 21:56:00,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:00,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516570612] [2024-06-27 21:56:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:00,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:00,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:56:00,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:00,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516570612] [2024-06-27 21:56:00,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516570612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:00,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:00,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:56:00,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306957967] [2024-06-27 21:56:00,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:00,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:56:00,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:00,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:56:00,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:56:00,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 75 [2024-06-27 21:56:00,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 87 transitions, 307 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:56:00,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:00,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 75 [2024-06-27 21:56:00,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:05,535 INFO L124 PetriNetUnfolderBase]: 46808/78393 cut-off events. [2024-06-27 21:56:05,535 INFO L125 PetriNetUnfolderBase]: For 38466/38861 co-relation queries the response was YES. [2024-06-27 21:56:05,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188981 conditions, 78393 events. 46808/78393 cut-off events. For 38466/38861 co-relation queries the response was YES. Maximal size of possible extension queue 2539. Compared 714362 event pairs, 12234 based on Foata normal form. 139/75052 useless extension candidates. Maximal degree in co-relation 188964. Up to 29962 conditions per place. [2024-06-27 21:56:06,006 INFO L140 encePairwiseOnDemand]: 62/75 looper letters, 128 selfloop transitions, 17 changer transitions 0/167 dead transitions. [2024-06-27 21:56:06,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 167 transitions, 866 flow [2024-06-27 21:56:06,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:56:06,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:56:06,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2024-06-27 21:56:06,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-27 21:56:06,008 INFO L175 Difference]: Start difference. First operand has 83 places, 87 transitions, 307 flow. Second operand 6 states and 275 transitions. [2024-06-27 21:56:06,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 167 transitions, 866 flow [2024-06-27 21:56:06,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 167 transitions, 863 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 21:56:06,015 INFO L231 Difference]: Finished difference. Result has 88 places, 93 transitions, 394 flow [2024-06-27 21:56:06,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=88, PETRI_TRANSITIONS=93} [2024-06-27 21:56:06,016 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 11 predicate places. [2024-06-27 21:56:06,016 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 93 transitions, 394 flow [2024-06-27 21:56:06,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:56:06,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:06,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:06,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 21:56:06,017 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-27 21:56:06,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:06,019 INFO L85 PathProgramCache]: Analyzing trace with hash -548424192, now seen corresponding path program 1 times [2024-06-27 21:56:06,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:06,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825202139] [2024-06-27 21:56:06,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:06,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:06,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:56:06,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:06,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825202139] [2024-06-27 21:56:06,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825202139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:06,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:06,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:56:06,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460240047] [2024-06-27 21:56:06,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:06,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:56:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:06,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:56:06,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:56:06,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 75 [2024-06-27 21:56:06,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 93 transitions, 394 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:56:06,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:06,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 75 [2024-06-27 21:56:06,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:13,272 INFO L124 PetriNetUnfolderBase]: 65793/102476 cut-off events. [2024-06-27 21:56:13,272 INFO L125 PetriNetUnfolderBase]: For 95928/96272 co-relation queries the response was YES. [2024-06-27 21:56:13,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278445 conditions, 102476 events. 65793/102476 cut-off events. For 95928/96272 co-relation queries the response was YES. Maximal size of possible extension queue 3125. Compared 874174 event pairs, 12862 based on Foata normal form. 38/99082 useless extension candidates. Maximal degree in co-relation 278426. Up to 24361 conditions per place. [2024-06-27 21:56:13,980 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 313 selfloop transitions, 14 changer transitions 0/351 dead transitions. [2024-06-27 21:56:13,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 351 transitions, 2244 flow [2024-06-27 21:56:13,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:56:13,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:56:13,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 428 transitions. [2024-06-27 21:56:13,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7133333333333334 [2024-06-27 21:56:13,983 INFO L175 Difference]: Start difference. First operand has 88 places, 93 transitions, 394 flow. Second operand 8 states and 428 transitions. [2024-06-27 21:56:13,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 351 transitions, 2244 flow [2024-06-27 21:56:14,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 351 transitions, 2175 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 21:56:14,037 INFO L231 Difference]: Finished difference. Result has 96 places, 103 transitions, 464 flow [2024-06-27 21:56:14,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=464, PETRI_PLACES=96, PETRI_TRANSITIONS=103} [2024-06-27 21:56:14,038 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 19 predicate places. [2024-06-27 21:56:14,038 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 103 transitions, 464 flow [2024-06-27 21:56:14,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:56:14,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:14,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:14,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 21:56:14,039 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-27 21:56:14,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:14,040 INFO L85 PathProgramCache]: Analyzing trace with hash -909116686, now seen corresponding path program 1 times [2024-06-27 21:56:14,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:14,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632675077] [2024-06-27 21:56:14,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:14,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:56:14,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:14,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632675077] [2024-06-27 21:56:14,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632675077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:14,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:14,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:56:14,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847247899] [2024-06-27 21:56:14,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:14,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:56:14,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:14,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:56:14,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:56:14,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 75 [2024-06-27 21:56:14,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 103 transitions, 464 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:56:14,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:14,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 75 [2024-06-27 21:56:14,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:56:20,629 INFO L124 PetriNetUnfolderBase]: 53555/89897 cut-off events. [2024-06-27 21:56:20,629 INFO L125 PetriNetUnfolderBase]: For 91359/91613 co-relation queries the response was YES. [2024-06-27 21:56:20,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248515 conditions, 89897 events. 53555/89897 cut-off events. For 91359/91613 co-relation queries the response was YES. Maximal size of possible extension queue 2966. Compared 837818 event pairs, 15639 based on Foata normal form. 626/87205 useless extension candidates. Maximal degree in co-relation 248493. Up to 33173 conditions per place. [2024-06-27 21:56:21,281 INFO L140 encePairwiseOnDemand]: 69/75 looper letters, 150 selfloop transitions, 9 changer transitions 0/183 dead transitions. [2024-06-27 21:56:21,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 183 transitions, 1107 flow [2024-06-27 21:56:21,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:56:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:56:21,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 237 transitions. [2024-06-27 21:56:21,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.632 [2024-06-27 21:56:21,283 INFO L175 Difference]: Start difference. First operand has 96 places, 103 transitions, 464 flow. Second operand 5 states and 237 transitions. [2024-06-27 21:56:21,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 183 transitions, 1107 flow [2024-06-27 21:56:21,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 183 transitions, 1107 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 21:56:21,713 INFO L231 Difference]: Finished difference. Result has 99 places, 101 transitions, 474 flow [2024-06-27 21:56:21,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=474, PETRI_PLACES=99, PETRI_TRANSITIONS=101} [2024-06-27 21:56:21,714 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 22 predicate places. [2024-06-27 21:56:21,714 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 101 transitions, 474 flow [2024-06-27 21:56:21,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:56:21,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:56:21,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:56:21,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 21:56:21,715 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-06-27 21:56:21,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:56:21,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1544497675, now seen corresponding path program 1 times [2024-06-27 21:56:21,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:56:21,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679664640] [2024-06-27 21:56:21,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:56:21,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:56:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:56:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:56:21,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:56:21,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679664640] [2024-06-27 21:56:21,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679664640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:56:21,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:56:21,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:56:21,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669923694] [2024-06-27 21:56:21,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:56:21,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:56:21,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:56:21,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:56:21,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:56:21,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 75 [2024-06-27 21:56:21,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 101 transitions, 474 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:56:21,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:56:21,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 75 [2024-06-27 21:56:21,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand