./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/13-privatized_34-traces-minepp-L-needs-to-be-um_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i ./goblint.2024-05-07_14-17-48.files/mutex-meet/13-privatized_34-traces-minepp-L-needs-to-be-um_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-wip.fs.witness-ghost-b44c828-m [2024-05-12 10:49:15,103 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 10:49:15,171 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 10:49:15,176 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 10:49:15,176 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 10:49:15,199 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 10:49:15,199 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 10:49:15,200 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 10:49:15,200 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 10:49:15,203 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 10:49:15,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 10:49:15,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 10:49:15,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 10:49:15,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 10:49:15,205 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 10:49:15,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 10:49:15,206 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 10:49:15,206 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 10:49:15,206 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 10:49:15,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 10:49:15,206 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 10:49:15,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 10:49:15,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 10:49:15,207 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 10:49:15,207 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 10:49:15,208 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 10:49:15,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 10:49:15,208 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 10:49:15,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 10:49:15,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 10:49:15,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 10:49:15,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 10:49:15,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:49:15,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 10:49:15,210 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 10:49:15,210 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 10:49:15,210 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 10:49:15,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 10:49:15,211 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 10:49:15,211 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 10:49:15,211 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 10:49:15,211 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 10:49:15,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 10:49:15,212 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 10:49:15,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 10:49:15,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 10:49:15,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 10:49:15,450 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 10:49:15,451 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 10:49:15,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2024-05-12 10:49:16,539 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 10:49:16,788 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 10:49:16,788 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2024-05-12 10:49:16,804 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7d5815ef/2e7c5c66cc0f4f038ed9ff7600e69b11/FLAG616829c1d [2024-05-12 10:49:16,817 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7d5815ef/2e7c5c66cc0f4f038ed9ff7600e69b11 [2024-05-12 10:49:16,819 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 10:49:16,820 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 10:49:16,820 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/13-privatized_34-traces-minepp-L-needs-to-be-um_true.yml/witness.yml [2024-05-12 10:49:16,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 10:49:16,945 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 10:49:16,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 10:49:16,954 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 10:49:16,957 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 10:49:16,958 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:49:16" (1/2) ... [2024-05-12 10:49:16,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56885053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:16, skipping insertion in model container [2024-05-12 10:49:16,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:49:16" (1/2) ... [2024-05-12 10:49:16,960 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1337391e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:16, skipping insertion in model container [2024-05-12 10:49:16,961 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:49:16" (2/2) ... [2024-05-12 10:49:16,961 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56885053 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:49:16, skipping insertion in model container [2024-05-12 10:49:16,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:49:16" (2/2) ... [2024-05-12 10:49:16,961 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 10:49:16,995 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 10:49:16,996 INFO L97 edCorrectnessWitness]: Location invariant before [L702-L702] (((! multithreaded || (B_locked || g == 42)) && (! multithreaded || (A_locked || g == 42))) && (! multithreaded || (C_locked || ((((((0 <= g && 15 <= g) && g <= 42) && g <= 127) && g % 27 == 15) && g != 0) && (g == 15 || g == 42))))) && (! multithreaded || ((((((0 <= g && 15 <= g) && g <= 42) && g <= 127) && g % 27 == 15) && g != 0) && (g == 15 || g == 42))) [2024-05-12 10:49:16,996 INFO L103 edCorrectnessWitness]: ghost_variable C_locked = 0 [2024-05-12 10:49:16,997 INFO L103 edCorrectnessWitness]: ghost_variable B_locked = 0 [2024-05-12 10:49:16,997 INFO L103 edCorrectnessWitness]: ghost_variable A_locked = 0 [2024-05-12 10:49:16,997 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 10:49:16,998 INFO L106 edCorrectnessWitness]: ghost_update [L704-L704] A_locked = 1; [2024-05-12 10:49:16,998 INFO L106 edCorrectnessWitness]: ghost_update [L705-L705] C_locked = 1; [2024-05-12 10:49:16,998 INFO L106 edCorrectnessWitness]: ghost_update [L710-L710] C_locked = 1; [2024-05-12 10:49:16,998 INFO L106 edCorrectnessWitness]: ghost_update [L701-L701] multithreaded = 1; [2024-05-12 10:49:16,998 INFO L106 edCorrectnessWitness]: ghost_update [L695-L695] B_locked = 0; [2024-05-12 10:49:16,998 INFO L106 edCorrectnessWitness]: ghost_update [L696-L696] A_locked = 0; [2024-05-12 10:49:16,998 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] C_locked = 1; [2024-05-12 10:49:16,999 INFO L106 edCorrectnessWitness]: ghost_update [L711-L711] B_locked = 0; [2024-05-12 10:49:16,999 INFO L106 edCorrectnessWitness]: ghost_update [L691-L691] C_locked = 0; [2024-05-12 10:49:16,999 INFO L106 edCorrectnessWitness]: ghost_update [L694-L694] C_locked = 0; [2024-05-12 10:49:16,999 INFO L106 edCorrectnessWitness]: ghost_update [L687-L687] A_locked = 1; [2024-05-12 10:49:16,999 INFO L106 edCorrectnessWitness]: ghost_update [L709-L709] B_locked = 1; [2024-05-12 10:49:16,999 INFO L106 edCorrectnessWitness]: ghost_update [L688-L688] B_locked = 1; [2024-05-12 10:49:16,999 INFO L106 edCorrectnessWitness]: ghost_update [L706-L706] A_locked = 0; [2024-05-12 10:49:17,000 INFO L106 edCorrectnessWitness]: ghost_update [L692-L692] C_locked = 1; [2024-05-12 10:49:17,035 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 10:49:17,182 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i[1107,1120] [2024-05-12 10:49:17,317 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:49:17,327 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 10:49:17,357 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i[1107,1120] 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 [2024-05-12 10:49:17,419 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:49:17,452 INFO L206 MainTranslator]: Completed translation [2024-05-12 10:49:17,452 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:49:17 WrapperNode [2024-05-12 10:49:17,452 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 10:49:17,453 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 10:49:17,453 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 10:49:17,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 10:49:17,459 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 12.05 10:49:17" (1/1) ... [2024-05-12 10:49:17,483 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 12.05 10:49:17" (1/1) ... [2024-05-12 10:49:17,508 INFO L138 Inliner]: procedures = 164, calls = 44, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2024-05-12 10:49:17,508 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 10:49:17,509 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 10:49:17,510 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 10:49:17,510 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 10:49:17,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:49:17" (1/1) ... [2024-05-12 10:49:17,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:49:17" (1/1) ... [2024-05-12 10:49:17,521 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:49:17" (1/1) ... [2024-05-12 10:49:17,535 INFO L175 MemorySlicer]: Split 18 memory accesses to 5 slices as follows [2, 1, 5, 5, 5]. 28 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 5, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0, 0]. [2024-05-12 10:49:17,537 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:49:17" (1/1) ... [2024-05-12 10:49:17,537 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:49:17" (1/1) ... [2024-05-12 10:49:17,548 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:49:17" (1/1) ... [2024-05-12 10:49:17,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:49:17" (1/1) ... [2024-05-12 10:49:17,553 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:49:17" (1/1) ... [2024-05-12 10:49:17,559 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:49:17" (1/1) ... [2024-05-12 10:49:17,561 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 10:49:17,563 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 10:49:17,563 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 10:49:17,563 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 10:49:17,564 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:49:17" (1/1) ... [2024-05-12 10:49:17,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:49:17,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:49:17,590 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) [2024-05-12 10:49:17,639 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 [2024-05-12 10:49:17,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 10:49:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 10:49:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 10:49:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 10:49:17,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 10:49:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-05-12 10:49:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 10:49:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 10:49:17,652 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-05-12 10:49:17,653 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-05-12 10:49:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 10:49:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 10:49:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 10:49:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 10:49:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 10:49:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 10:49:17,653 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-05-12 10:49:17,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 10:49:17,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 10:49:17,655 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 10:49:17,777 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 10:49:17,779 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 10:49:17,953 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 10:49:17,968 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 10:49:18,083 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 10:49:18,083 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 10:49:18,083 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:49:18 BoogieIcfgContainer [2024-05-12 10:49:18,084 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 10:49:18,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 10:49:18,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 10:49:18,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 10:49:18,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 10:49:16" (1/4) ... [2024-05-12 10:49:18,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151d111b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:49:18, skipping insertion in model container [2024-05-12 10:49:18,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:49:16" (2/4) ... [2024-05-12 10:49:18,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151d111b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 10:49:18, skipping insertion in model container [2024-05-12 10:49:18,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:49:17" (3/4) ... [2024-05-12 10:49:18,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@151d111b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 10:49:18, skipping insertion in model container [2024-05-12 10:49:18,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:49:18" (4/4) ... [2024-05-12 10:49:18,092 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2024-05-12 10:49:18,106 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 10:49:18,108 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-05-12 10:49:18,108 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 10:49:18,150 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 10:49:18,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 45 transitions, 94 flow [2024-05-12 10:49:18,211 INFO L124 PetriNetUnfolderBase]: 2/44 cut-off events. [2024-05-12 10:49:18,211 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:49:18,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 44 events. 2/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2024-05-12 10:49:18,215 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 45 transitions, 94 flow [2024-05-12 10:49:18,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 41 transitions, 85 flow [2024-05-12 10:49:18,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 10:49:18,237 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;@394a6a5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 10:49:18,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-05-12 10:49:18,244 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 10:49:18,245 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 10:49:18,245 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:49:18,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:18,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 10:49:18,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:49:18,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:18,251 INFO L85 PathProgramCache]: Analyzing trace with hash -39727033, now seen corresponding path program 1 times [2024-05-12 10:49:18,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:18,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785647360] [2024-05-12 10:49:18,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:18,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:18,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:18,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:18,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785647360] [2024-05-12 10:49:18,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785647360] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:18,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:18,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 10:49:18,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336821765] [2024-05-12 10:49:18,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:18,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:49:18,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:18,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:49:18,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:49:18,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-05-12 10:49:18,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-05-12 10:49:18,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:18,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-05-12 10:49:18,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:18,873 INFO L124 PetriNetUnfolderBase]: 105/307 cut-off events. [2024-05-12 10:49:18,873 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:49:18,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 307 events. 105/307 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1519 event pairs, 74 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 531. Up to 170 conditions per place. [2024-05-12 10:49:18,876 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 31 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2024-05-12 10:49:18,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 50 transitions, 171 flow [2024-05-12 10:49:18,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:49:18,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:49:18,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-05-12 10:49:18,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6592592592592592 [2024-05-12 10:49:18,886 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 85 flow. Second operand 3 states and 89 transitions. [2024-05-12 10:49:18,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 50 transitions, 171 flow [2024-05-12 10:49:18,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 50 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:49:18,890 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 95 flow [2024-05-12 10:49:18,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-05-12 10:49:18,907 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2024-05-12 10:49:18,908 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 95 flow [2024-05-12 10:49:18,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-05-12 10:49:18,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:18,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:18,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 10:49:18,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:49:18,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:18,909 INFO L85 PathProgramCache]: Analyzing trace with hash 641804891, now seen corresponding path program 1 times [2024-05-12 10:49:18,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:18,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749315277] [2024-05-12 10:49:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:18,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:19,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:19,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749315277] [2024-05-12 10:49:19,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749315277] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:19,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:19,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:49:19,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101423090] [2024-05-12 10:49:19,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:19,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:49:19,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:19,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:49:19,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:49:19,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-05-12 10:49:19,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 95 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2024-05-12 10:49:19,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:19,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-05-12 10:49:19,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:19,373 INFO L124 PetriNetUnfolderBase]: 130/436 cut-off events. [2024-05-12 10:49:19,373 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-05-12 10:49:19,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 436 events. 130/436 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2496 event pairs, 17 based on Foata normal form. 1/435 useless extension candidates. Maximal degree in co-relation 777. Up to 93 conditions per place. [2024-05-12 10:49:19,375 INFO L140 encePairwiseOnDemand]: 29/45 looper letters, 64 selfloop transitions, 23 changer transitions 0/103 dead transitions. [2024-05-12 10:49:19,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 103 transitions, 407 flow [2024-05-12 10:49:19,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:49:19,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:49:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-05-12 10:49:19,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.725925925925926 [2024-05-12 10:49:19,378 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 95 flow. Second operand 6 states and 196 transitions. [2024-05-12 10:49:19,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 103 transitions, 407 flow [2024-05-12 10:49:19,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 103 transitions, 393 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:49:19,380 INFO L231 Difference]: Finished difference. Result has 54 places, 65 transitions, 266 flow [2024-05-12 10:49:19,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=266, PETRI_PLACES=54, PETRI_TRANSITIONS=65} [2024-05-12 10:49:19,381 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 10 predicate places. [2024-05-12 10:49:19,381 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 65 transitions, 266 flow [2024-05-12 10:49:19,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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) [2024-05-12 10:49:19,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:19,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:19,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 10:49:19,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:49:19,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:19,382 INFO L85 PathProgramCache]: Analyzing trace with hash 713545539, now seen corresponding path program 1 times [2024-05-12 10:49:19,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:19,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361185990] [2024-05-12 10:49:19,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:19,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:19,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:19,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:19,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361185990] [2024-05-12 10:49:19,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361185990] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:19,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:19,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:49:19,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051961528] [2024-05-12 10:49:19,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:19,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:49:19,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:19,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:49:19,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:49:19,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-05-12 10:49:19,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 65 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-05-12 10:49:19,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:19,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-05-12 10:49:19,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:19,783 INFO L124 PetriNetUnfolderBase]: 129/426 cut-off events. [2024-05-12 10:49:19,784 INFO L125 PetriNetUnfolderBase]: For 321/321 co-relation queries the response was YES. [2024-05-12 10:49:19,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 426 events. 129/426 cut-off events. For 321/321 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2403 event pairs, 17 based on Foata normal form. 2/426 useless extension candidates. Maximal degree in co-relation 1078. Up to 91 conditions per place. [2024-05-12 10:49:19,789 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 63 selfloop transitions, 22 changer transitions 0/101 dead transitions. [2024-05-12 10:49:19,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 101 transitions, 571 flow [2024-05-12 10:49:19,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:49:19,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:49:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-05-12 10:49:19,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.72 [2024-05-12 10:49:19,794 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 266 flow. Second operand 5 states and 162 transitions. [2024-05-12 10:49:19,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 101 transitions, 571 flow [2024-05-12 10:49:19,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 101 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:49:19,805 INFO L231 Difference]: Finished difference. Result has 57 places, 69 transitions, 336 flow [2024-05-12 10:49:19,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=57, PETRI_TRANSITIONS=69} [2024-05-12 10:49:19,806 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 13 predicate places. [2024-05-12 10:49:19,806 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 69 transitions, 336 flow [2024-05-12 10:49:19,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2024-05-12 10:49:19,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:19,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:19,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 10:49:19,806 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:49:19,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:19,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1974411291, now seen corresponding path program 1 times [2024-05-12 10:49:19,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:19,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861136494] [2024-05-12 10:49:19,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:19,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:19,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:19,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861136494] [2024-05-12 10:49:19,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861136494] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:19,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:19,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:49:19,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314873815] [2024-05-12 10:49:19,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:19,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:49:19,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:19,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:49:19,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:49:19,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-05-12 10:49:19,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 69 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-05-12 10:49:19,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:19,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-05-12 10:49:19,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:19,942 INFO L124 PetriNetUnfolderBase]: 146/463 cut-off events. [2024-05-12 10:49:19,942 INFO L125 PetriNetUnfolderBase]: For 662/670 co-relation queries the response was YES. [2024-05-12 10:49:19,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 463 events. 146/463 cut-off events. For 662/670 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2624 event pairs, 48 based on Foata normal form. 36/493 useless extension candidates. Maximal degree in co-relation 1326. Up to 214 conditions per place. [2024-05-12 10:49:19,944 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 55 selfloop transitions, 5 changer transitions 24/99 dead transitions. [2024-05-12 10:49:19,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 99 transitions, 650 flow [2024-05-12 10:49:19,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:49:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:49:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-05-12 10:49:19,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688888888888889 [2024-05-12 10:49:19,945 INFO L175 Difference]: Start difference. First operand has 57 places, 69 transitions, 336 flow. Second operand 5 states and 128 transitions. [2024-05-12 10:49:19,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 99 transitions, 650 flow [2024-05-12 10:49:19,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 99 transitions, 620 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:49:19,948 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 315 flow [2024-05-12 10:49:19,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=315, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2024-05-12 10:49:19,949 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 18 predicate places. [2024-05-12 10:49:19,949 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 315 flow [2024-05-12 10:49:19,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-05-12 10:49:19,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:19,949 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] [2024-05-12 10:49:19,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 10:49:19,949 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:49:19,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:19,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1962326237, now seen corresponding path program 1 times [2024-05-12 10:49:19,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:19,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837418638] [2024-05-12 10:49:19,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:19,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:20,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:20,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:20,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837418638] [2024-05-12 10:49:20,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837418638] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:20,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:20,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:49:20,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402425381] [2024-05-12 10:49:20,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:20,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:49:20,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:20,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:49:20,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:49:20,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-05-12 10:49:20,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 315 flow. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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) [2024-05-12 10:49:20,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:20,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-05-12 10:49:20,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:20,188 INFO L124 PetriNetUnfolderBase]: 67/255 cut-off events. [2024-05-12 10:49:20,188 INFO L125 PetriNetUnfolderBase]: For 336/336 co-relation queries the response was YES. [2024-05-12 10:49:20,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 255 events. 67/255 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1194 event pairs, 24 based on Foata normal form. 22/265 useless extension candidates. Maximal degree in co-relation 687. Up to 101 conditions per place. [2024-05-12 10:49:20,189 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 20 selfloop transitions, 6 changer transitions 26/66 dead transitions. [2024-05-12 10:49:20,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 66 transitions, 394 flow [2024-05-12 10:49:20,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:49:20,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:49:20,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-05-12 10:49:20,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2024-05-12 10:49:20,190 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 315 flow. Second operand 5 states and 132 transitions. [2024-05-12 10:49:20,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 66 transitions, 394 flow [2024-05-12 10:49:20,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 66 transitions, 376 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-05-12 10:49:20,192 INFO L231 Difference]: Finished difference. Result has 57 places, 36 transitions, 144 flow [2024-05-12 10:49:20,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=57, PETRI_TRANSITIONS=36} [2024-05-12 10:49:20,193 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 13 predicate places. [2024-05-12 10:49:20,193 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 36 transitions, 144 flow [2024-05-12 10:49:20,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 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) [2024-05-12 10:49:20,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:20,193 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] [2024-05-12 10:49:20,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 10:49:20,193 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:49:20,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash -186441623, now seen corresponding path program 1 times [2024-05-12 10:49:20,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:20,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141954066] [2024-05-12 10:49:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:20,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:20,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:20,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:20,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141954066] [2024-05-12 10:49:20,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141954066] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:20,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:20,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:49:20,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760928646] [2024-05-12 10:49:20,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:20,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:49:20,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:20,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:49:20,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:49:20,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-05-12 10:49:20,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 36 transitions, 144 flow. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 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) [2024-05-12 10:49:20,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:20,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-05-12 10:49:20,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:20,364 INFO L124 PetriNetUnfolderBase]: 16/74 cut-off events. [2024-05-12 10:49:20,364 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-05-12 10:49:20,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 74 events. 16/74 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 190 event pairs, 0 based on Foata normal form. 6/79 useless extension candidates. Maximal degree in co-relation 192. Up to 43 conditions per place. [2024-05-12 10:49:20,365 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 18 selfloop transitions, 2 changer transitions 3/33 dead transitions. [2024-05-12 10:49:20,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 33 transitions, 167 flow [2024-05-12 10:49:20,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:49:20,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:49:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-05-12 10:49:20,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5388888888888889 [2024-05-12 10:49:20,366 INFO L175 Difference]: Start difference. First operand has 57 places, 36 transitions, 144 flow. Second operand 4 states and 97 transitions. [2024-05-12 10:49:20,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 33 transitions, 167 flow [2024-05-12 10:49:20,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 33 transitions, 137 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-05-12 10:49:20,367 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 81 flow [2024-05-12 10:49:20,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2024-05-12 10:49:20,368 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -4 predicate places. [2024-05-12 10:49:20,368 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 81 flow [2024-05-12 10:49:20,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 7 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) [2024-05-12 10:49:20,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:20,368 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] [2024-05-12 10:49:20,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 10:49:20,368 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:49:20,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:20,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1263050401, now seen corresponding path program 1 times [2024-05-12 10:49:20,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:20,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388449242] [2024-05-12 10:49:20,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:20,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:20,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:20,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388449242] [2024-05-12 10:49:20,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388449242] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:20,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:20,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:49:20,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014376955] [2024-05-12 10:49:20,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:20,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:49:20,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:20,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:49:20,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:49:20,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-05-12 10:49:20,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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) [2024-05-12 10:49:20,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:20,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-05-12 10:49:20,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:20,509 INFO L124 PetriNetUnfolderBase]: 10/57 cut-off events. [2024-05-12 10:49:20,509 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-05-12 10:49:20,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 57 events. 10/57 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 117 event pairs, 4 based on Foata normal form. 6/62 useless extension candidates. Maximal degree in co-relation 117. Up to 21 conditions per place. [2024-05-12 10:49:20,510 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 11 selfloop transitions, 6 changer transitions 2/29 dead transitions. [2024-05-12 10:49:20,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 29 transitions, 127 flow [2024-05-12 10:49:20,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:49:20,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:49:20,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-05-12 10:49:20,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-05-12 10:49:20,511 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 81 flow. Second operand 5 states and 115 transitions. [2024-05-12 10:49:20,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 29 transitions, 127 flow [2024-05-12 10:49:20,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 121 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 10:49:20,512 INFO L231 Difference]: Finished difference. Result has 38 places, 25 transitions, 80 flow [2024-05-12 10:49:20,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=80, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2024-05-12 10:49:20,512 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -6 predicate places. [2024-05-12 10:49:20,512 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 80 flow [2024-05-12 10:49:20,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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) [2024-05-12 10:49:20,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:20,513 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] [2024-05-12 10:49:20,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 10:49:20,513 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:49:20,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:20,513 INFO L85 PathProgramCache]: Analyzing trace with hash 203582029, now seen corresponding path program 2 times [2024-05-12 10:49:20,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:20,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643393478] [2024-05-12 10:49:20,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:20,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:20,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:20,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:20,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643393478] [2024-05-12 10:49:20,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643393478] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:20,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:20,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:49:20,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010315566] [2024-05-12 10:49:20,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:20,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:49:20,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:20,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:49:20,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:49:20,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-05-12 10:49:20,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2024-05-12 10:49:20,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:20,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-05-12 10:49:20,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:20,619 INFO L124 PetriNetUnfolderBase]: 10/45 cut-off events. [2024-05-12 10:49:20,619 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-05-12 10:49:20,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 45 events. 10/45 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 91 event pairs, 2 based on Foata normal form. 1/45 useless extension candidates. Maximal degree in co-relation 102. Up to 22 conditions per place. [2024-05-12 10:49:20,619 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2024-05-12 10:49:20,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 21 transitions, 100 flow [2024-05-12 10:49:20,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:49:20,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:49:20,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-05-12 10:49:20,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-05-12 10:49:20,620 INFO L175 Difference]: Start difference. First operand has 38 places, 25 transitions, 80 flow. Second operand 4 states and 92 transitions. [2024-05-12 10:49:20,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 21 transitions, 100 flow [2024-05-12 10:49:20,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-05-12 10:49:20,621 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2024-05-12 10:49:20,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2024-05-12 10:49:20,621 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -15 predicate places. [2024-05-12 10:49:20,621 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2024-05-12 10:49:20,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2024-05-12 10:49:20,624 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 3 remaining) [2024-05-12 10:49:20,624 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-05-12 10:49:20,624 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-05-12 10:49:20,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 10:49:20,625 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:20,627 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 10:49:20,627 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 10:49:20,630 INFO L507 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-05-12 10:49:20,630 INFO L508 ceAbstractionStarter]: WitnessConsidered=1 [2024-05-12 10:49:20,631 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 10:49:20 BasicIcfg [2024-05-12 10:49:20,631 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 10:49:20,631 INFO L158 Benchmark]: Toolchain (without parser) took 3685.98ms. Allocated memory was 161.5MB in the beginning and 251.7MB in the end (delta: 90.2MB). Free memory was 131.4MB in the beginning and 137.5MB in the end (delta: -6.2MB). Peak memory consumption was 85.0MB. Max. memory is 16.1GB. [2024-05-12 10:49:20,631 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 10:49:20,632 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 125.8MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 10:49:20,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 499.36ms. Allocated memory is still 161.5MB. Free memory was 132.1MB in the beginning and 104.7MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-05-12 10:49:20,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.00ms. Allocated memory is still 161.5MB. Free memory was 104.7MB in the beginning and 102.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 10:49:20,632 INFO L158 Benchmark]: Boogie Preprocessor took 53.20ms. Allocated memory is still 161.5MB. Free memory was 102.8MB in the beginning and 100.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 10:49:20,632 INFO L158 Benchmark]: RCFGBuilder took 520.90ms. Allocated memory is still 161.5MB. Free memory was 100.7MB in the beginning and 62.9MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-05-12 10:49:20,632 INFO L158 Benchmark]: TraceAbstraction took 2545.80ms. Allocated memory was 161.5MB in the beginning and 251.7MB in the end (delta: 90.2MB). Free memory was 62.9MB in the beginning and 137.5MB in the end (delta: -74.6MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2024-05-12 10:49:20,633 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 125.8MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.20ms. Allocated memory is still 125.8MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 499.36ms. Allocated memory is still 161.5MB. Free memory was 132.1MB in the beginning and 104.7MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.00ms. Allocated memory is still 161.5MB. Free memory was 104.7MB in the beginning and 102.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.20ms. Allocated memory is still 161.5MB. Free memory was 102.8MB in the beginning and 100.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 520.90ms. Allocated memory is still 161.5MB. Free memory was 100.7MB in the beginning and 62.9MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2545.80ms. Allocated memory was 161.5MB in the beginning and 251.7MB in the end (delta: 90.2MB). Free memory was 62.9MB in the beginning and 137.5MB in the end (delta: -74.6MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 702]: 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 63 locations, 3 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: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 200 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 190 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 613 IncrementalHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 6 mSDtfsCounter, 613 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=336occurred in iteration=3, InterpolantAutomatonStates: 37, 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, 1.2s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 796 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-05-12 10:49:20,661 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