./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-parallel-sum-equiv.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-parallel-sum-equiv.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 21:00:23,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 21:00:23,445 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 21:00:23,450 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 21:00:23,450 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 21:00:23,475 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 21:00:23,475 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 21:00:23,476 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 21:00:23,476 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 21:00:23,480 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 21:00:23,480 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 21:00:23,480 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 21:00:23,480 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 21:00:23,481 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 21:00:23,482 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 21:00:23,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 21:00:23,482 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 21:00:23,482 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 21:00:23,482 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 21:00:23,483 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 21:00:23,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 21:00:23,483 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 21:00:23,483 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 21:00:23,484 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 21:00:23,491 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 21:00:23,491 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 21:00:23,491 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 21:00:23,491 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 21:00:23,492 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 21:00:23,492 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 21:00:23,492 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 21:00:23,492 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 21:00:23,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 21:00:23,493 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 21:00:23,493 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 21:00:23,493 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 21:00:23,493 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 21:00:23,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 21:00:23,494 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 21:00:23,494 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 21:00:23,494 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 21:00:23,494 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 21:00:23,494 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 21:00:23,495 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 21:00:23,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 21:00:23,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 21:00:23,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 21:00:23,681 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 21:00:23,681 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 21:00:23,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2024-06-03 21:00:24,733 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 21:00:24,854 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 21:00:24,856 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2024-06-03 21:00:24,863 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eaa08a8f/8d52febb8aac4028b2a5b55fdee2fcd2/FLAG60543e84e [2024-06-03 21:00:24,874 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eaa08a8f/8d52febb8aac4028b2a5b55fdee2fcd2 [2024-06-03 21:00:24,875 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 21:00:24,876 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 21:00:24,876 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-parallel-sum-equiv.wvr.yml/witness.yml [2024-06-03 21:00:24,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 21:00:24,930 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 21:00:24,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 21:00:24,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 21:00:24,943 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 21:00:24,944 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 09:00:24" (1/2) ... [2024-06-03 21:00:24,945 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4943f71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:00:24, skipping insertion in model container [2024-06-03 21:00:24,945 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 09:00:24" (1/2) ... [2024-06-03 21:00:24,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5693cf9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:00:24, skipping insertion in model container [2024-06-03 21:00:24,946 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:00:24" (2/2) ... [2024-06-03 21:00:24,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4943f71d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:00:24, skipping insertion in model container [2024-06-03 21:00:24,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:00:24" (2/2) ... [2024-06-03 21:00:24,946 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 21:00:24,956 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 21:00:24,957 INFO L97 edCorrectnessWitness]: Location invariant before [L139-L139] ! multithreaded || ((4294967296LL + (long long )i_7) + (long long )n_1 >= 0LL && (4294967295LL + (long long )i_7) - (long long )n_1 >= 0LL) [2024-06-03 21:00:24,957 INFO L97 edCorrectnessWitness]: Location invariant before [L92-L92] ! multithreaded || ((4294967296LL + (long long )i_7) + (long long )n_1 >= 0LL && (4294967295LL + (long long )i_7) - (long long )n_1 >= 0LL) [2024-06-03 21:00:24,957 INFO L97 edCorrectnessWitness]: Location invariant before [L140-L140] ! multithreaded || ((4294967296LL + (long long )i_7) + (long long )n_1 >= 0LL && (4294967295LL + (long long )i_7) - (long long )n_1 >= 0LL) [2024-06-03 21:00:24,957 INFO L97 edCorrectnessWitness]: Location invariant before [L93-L93] ! multithreaded || ((4294967296LL + (long long )i_7) + (long long )n_1 >= 0LL && (4294967295LL + (long long )i_7) - (long long )n_1 >= 0LL) [2024-06-03 21:00:24,958 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 21:00:24,958 INFO L106 edCorrectnessWitness]: ghost_update [L138-L138] multithreaded = 1; [2024-06-03 21:00:24,983 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 21:00:25,141 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 21:00:25,149 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 21:00:25,196 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 21:00:25,208 INFO L206 MainTranslator]: Completed translation [2024-06-03 21:00:25,209 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:00:25 WrapperNode [2024-06-03 21:00:25,209 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 21:00:25,210 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 21:00:25,210 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 21:00:25,210 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 21:00:25,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:00:25" (1/1) ... [2024-06-03 21:00:25,221 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:00:25" (1/1) ... [2024-06-03 21:00:25,242 INFO L138 Inliner]: procedures = 26, calls = 54, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 255 [2024-06-03 21:00:25,242 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 21:00:25,243 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 21:00:25,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 21:00:25,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 21:00:25,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:00:25" (1/1) ... [2024-06-03 21:00:25,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:00:25" (1/1) ... [2024-06-03 21:00:25,254 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:00:25" (1/1) ... [2024-06-03 21:00:25,265 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-06-03 21:00:25,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:00:25" (1/1) ... [2024-06-03 21:00:25,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:00:25" (1/1) ... [2024-06-03 21:00:25,273 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:00:25" (1/1) ... [2024-06-03 21:00:25,276 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:00:25" (1/1) ... [2024-06-03 21:00:25,277 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:00:25" (1/1) ... [2024-06-03 21:00:25,278 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:00:25" (1/1) ... [2024-06-03 21:00:25,281 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 21:00:25,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 21:00:25,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 21:00:25,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 21:00:25,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:00:25" (1/1) ... [2024-06-03 21:00:25,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 21:00:25,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 21:00:25,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-03 21:00:25,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-03 21:00:25,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 21:00:25,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-03 21:00:25,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-03 21:00:25,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-03 21:00:25,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-03 21:00:25,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-03 21:00:25,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-03 21:00:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-03 21:00:25,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-03 21:00:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-03 21:00:25,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-03 21:00:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-03 21:00:25,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-03 21:00:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 21:00:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-03 21:00:25,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 21:00:25,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 21:00:25,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-03 21:00:25,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 21:00:25,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 21:00:25,363 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 21:00:25,443 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 21:00:25,445 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 21:00:25,738 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 21:00:25,741 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 21:00:26,062 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 21:00:26,062 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-03 21:00:26,062 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 09:00:26 BoogieIcfgContainer [2024-06-03 21:00:26,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 21:00:26,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 21:00:26,064 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 21:00:26,066 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 21:00:26,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 09:00:24" (1/4) ... [2024-06-03 21:00:26,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d4fa97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 09:00:26, skipping insertion in model container [2024-06-03 21:00:26,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:00:24" (2/4) ... [2024-06-03 21:00:26,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d4fa97 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 09:00:26, skipping insertion in model container [2024-06-03 21:00:26,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:00:25" (3/4) ... [2024-06-03 21:00:26,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d4fa97 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 09:00:26, skipping insertion in model container [2024-06-03 21:00:26,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 09:00:26" (4/4) ... [2024-06-03 21:00:26,069 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2024-06-03 21:00:26,083 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 21:00:26,084 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-03 21:00:26,084 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 21:00:26,126 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-06-03 21:00:26,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 64 transitions, 168 flow [2024-06-03 21:00:26,189 INFO L124 PetriNetUnfolderBase]: 9/57 cut-off events. [2024-06-03 21:00:26,189 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-03 21:00:26,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 57 events. 9/57 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 112 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 58. Up to 3 conditions per place. [2024-06-03 21:00:26,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 64 transitions, 168 flow [2024-06-03 21:00:26,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 55 transitions, 137 flow [2024-06-03 21:00:26,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 21:00:26,222 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;@508674dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 21:00:26,223 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-06-03 21:00:26,225 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 21:00:26,228 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-06-03 21:00:26,228 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 21:00:26,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:00:26,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:00:26,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-03 21:00:26,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:00:26,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1157618638, now seen corresponding path program 1 times [2024-06-03 21:00:26,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:00:26,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532119963] [2024-06-03 21:00:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:00:26,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:00:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:00:26,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:00:26,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:00:26,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532119963] [2024-06-03 21:00:26,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532119963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:00:26,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:00:26,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 21:00:26,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007468906] [2024-06-03 21:00:26,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:00:26,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 21:00:26,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:00:26,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 21:00:26,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 21:00:26,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 66 [2024-06-03 21:00:26,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:00:26,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:00:26,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 66 [2024-06-03 21:00:26,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:00:27,834 INFO L124 PetriNetUnfolderBase]: 14345/19040 cut-off events. [2024-06-03 21:00:27,834 INFO L125 PetriNetUnfolderBase]: For 950/950 co-relation queries the response was YES. [2024-06-03 21:00:27,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39117 conditions, 19040 events. 14345/19040 cut-off events. For 950/950 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 92608 event pairs, 3436 based on Foata normal form. 377/17339 useless extension candidates. Maximal degree in co-relation 39057. Up to 16856 conditions per place. [2024-06-03 21:00:27,931 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 74 selfloop transitions, 2 changer transitions 2/80 dead transitions. [2024-06-03 21:00:27,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 364 flow [2024-06-03 21:00:27,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 21:00:27,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 21:00:27,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-06-03 21:00:27,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-06-03 21:00:27,942 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 137 flow. Second operand 3 states and 105 transitions. [2024-06-03 21:00:27,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 364 flow [2024-06-03 21:00:27,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 333 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-03 21:00:27,956 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 121 flow [2024-06-03 21:00:27,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-06-03 21:00:27,961 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -5 predicate places. [2024-06-03 21:00:27,961 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 121 flow [2024-06-03 21:00:27,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:00:27,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:00:27,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:00:27,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 21:00:27,962 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-03 21:00:27,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:00:27,963 INFO L85 PathProgramCache]: Analyzing trace with hash -930918972, now seen corresponding path program 1 times [2024-06-03 21:00:27,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:00:27,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200012744] [2024-06-03 21:00:27,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:00:27,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:00:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:00:28,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:00:28,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:00:28,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200012744] [2024-06-03 21:00:28,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200012744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:00:28,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:00:28,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 21:00:28,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206909894] [2024-06-03 21:00:28,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:00:28,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 21:00:28,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:00:28,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 21:00:28,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 21:00:28,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 66 [2024-06-03 21:00:28,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:00:28,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:00:28,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 66 [2024-06-03 21:00:28,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:00:29,685 INFO L124 PetriNetUnfolderBase]: 18909/25208 cut-off events. [2024-06-03 21:00:29,685 INFO L125 PetriNetUnfolderBase]: For 3762/3762 co-relation queries the response was YES. [2024-06-03 21:00:29,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53907 conditions, 25208 events. 18909/25208 cut-off events. For 3762/3762 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 122768 event pairs, 12417 based on Foata normal form. 1464/23990 useless extension candidates. Maximal degree in co-relation 50295. Up to 18949 conditions per place. [2024-06-03 21:00:29,854 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 76 selfloop transitions, 3 changer transitions 3/84 dead transitions. [2024-06-03 21:00:29,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 359 flow [2024-06-03 21:00:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 21:00:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 21:00:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-06-03 21:00:29,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128787878787879 [2024-06-03 21:00:29,857 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 121 flow. Second operand 4 states and 109 transitions. [2024-06-03 21:00:29,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 359 flow [2024-06-03 21:00:29,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 84 transitions, 355 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 21:00:29,860 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 135 flow [2024-06-03 21:00:29,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-06-03 21:00:29,861 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2024-06-03 21:00:29,864 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 135 flow [2024-06-03 21:00:29,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:00:29,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:00:29,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:00:29,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 21:00:29,865 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-03 21:00:29,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:00:29,866 INFO L85 PathProgramCache]: Analyzing trace with hash -401201067, now seen corresponding path program 1 times [2024-06-03 21:00:29,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:00:29,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956080308] [2024-06-03 21:00:29,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:00:29,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:00:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:00:30,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:00:30,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:00:30,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956080308] [2024-06-03 21:00:30,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956080308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:00:30,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:00:30,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 21:00:30,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904089320] [2024-06-03 21:00:30,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:00:30,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 21:00:30,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:00:30,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 21:00:30,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 21:00:30,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 66 [2024-06-03 21:00:30,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:00:30,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:00:30,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 66 [2024-06-03 21:00:30,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:00:31,710 INFO L124 PetriNetUnfolderBase]: 21574/29796 cut-off events. [2024-06-03 21:00:31,710 INFO L125 PetriNetUnfolderBase]: For 2752/2768 co-relation queries the response was YES. [2024-06-03 21:00:31,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62803 conditions, 29796 events. 21574/29796 cut-off events. For 2752/2768 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 160486 event pairs, 14359 based on Foata normal form. 264/26324 useless extension candidates. Maximal degree in co-relation 41769. Up to 21021 conditions per place. [2024-06-03 21:00:31,806 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 45 selfloop transitions, 2 changer transitions 69/121 dead transitions. [2024-06-03 21:00:31,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 121 transitions, 526 flow [2024-06-03 21:00:31,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 21:00:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 21:00:31,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-06-03 21:00:31,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503030303030303 [2024-06-03 21:00:31,808 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 135 flow. Second operand 5 states and 166 transitions. [2024-06-03 21:00:31,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 121 transitions, 526 flow [2024-06-03 21:00:31,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 121 transitions, 521 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 21:00:31,813 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 147 flow [2024-06-03 21:00:31,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-06-03 21:00:31,813 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 1 predicate places. [2024-06-03 21:00:31,813 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 147 flow [2024-06-03 21:00:31,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:00:31,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:00:31,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:00:31,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 21:00:31,814 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-03 21:00:31,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:00:31,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1359201349, now seen corresponding path program 1 times [2024-06-03 21:00:31,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:00:31,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179583034] [2024-06-03 21:00:31,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:00:31,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:00:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:00:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:00:31,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:00:31,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179583034] [2024-06-03 21:00:31,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179583034] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-03 21:00:31,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023505882] [2024-06-03 21:00:31,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:00:31,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 21:00:31,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 21:00:31,920 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-03 21:00:31,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-03 21:00:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:00:32,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-03 21:00:32,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-03 21:00:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:00:32,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-03 21:00:32,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:00:32,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023505882] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-03 21:00:32,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-03 21:00:32,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-06-03 21:00:32,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573924331] [2024-06-03 21:00:32,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-03 21:00:32,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 21:00:32,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:00:32,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 21:00:32,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-03 21:00:32,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 66 [2024-06-03 21:00:32,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 147 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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) [2024-06-03 21:00:32,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:00:32,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 66 [2024-06-03 21:00:32,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:00:34,157 INFO L124 PetriNetUnfolderBase]: 26221/35556 cut-off events. [2024-06-03 21:00:34,157 INFO L125 PetriNetUnfolderBase]: For 9159/9159 co-relation queries the response was YES. [2024-06-03 21:00:34,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79931 conditions, 35556 events. 26221/35556 cut-off events. For 9159/9159 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 190012 event pairs, 13111 based on Foata normal form. 264/32027 useless extension candidates. Maximal degree in co-relation 79916. Up to 18318 conditions per place. [2024-06-03 21:00:34,318 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 107 selfloop transitions, 7 changer transitions 69/185 dead transitions. [2024-06-03 21:00:34,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 185 transitions, 839 flow [2024-06-03 21:00:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 21:00:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 21:00:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 231 transitions. [2024-06-03 21:00:34,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-03 21:00:34,322 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 147 flow. Second operand 8 states and 231 transitions. [2024-06-03 21:00:34,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 185 transitions, 839 flow [2024-06-03 21:00:34,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 185 transitions, 829 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-03 21:00:34,345 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 195 flow [2024-06-03 21:00:34,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=195, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-06-03 21:00:34,347 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 7 predicate places. [2024-06-03 21:00:34,347 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 195 flow [2024-06-03 21:00:34,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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) [2024-06-03 21:00:34,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:00:34,347 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:00:34,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-03 21:00:34,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 21:00:34,713 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-03 21:00:34,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:00:34,714 INFO L85 PathProgramCache]: Analyzing trace with hash -992439019, now seen corresponding path program 2 times [2024-06-03 21:00:34,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:00:34,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712253563] [2024-06-03 21:00:34,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:00:34,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:00:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:00:34,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 21:00:34,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:00:34,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712253563] [2024-06-03 21:00:34,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712253563] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-03 21:00:34,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101575560] [2024-06-03 21:00:34,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-03 21:00:34,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 21:00:34,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 21:00:34,811 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-03 21:00:34,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-03 21:00:34,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-03 21:00:34,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-03 21:00:34,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-03 21:00:34,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-03 21:00:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-03 21:00:34,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-03 21:00:34,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101575560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:00:34,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-03 21:00:34,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-06-03 21:00:34,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923412254] [2024-06-03 21:00:34,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:00:34,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 21:00:34,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:00:34,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 21:00:34,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 21:00:34,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 66 [2024-06-03 21:00:34,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:00:34,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:00:34,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 66 [2024-06-03 21:00:34,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:00:35,699 INFO L124 PetriNetUnfolderBase]: 11615/15788 cut-off events. [2024-06-03 21:00:35,699 INFO L125 PetriNetUnfolderBase]: For 10603/10603 co-relation queries the response was YES. [2024-06-03 21:00:35,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34146 conditions, 15788 events. 11615/15788 cut-off events. For 10603/10603 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 77879 event pairs, 1244 based on Foata normal form. 1708/15717 useless extension candidates. Maximal degree in co-relation 34116. Up to 7446 conditions per place. [2024-06-03 21:00:35,726 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 0 selfloop transitions, 0 changer transitions 111/111 dead transitions. [2024-06-03 21:00:35,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 111 transitions, 499 flow [2024-06-03 21:00:35,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 21:00:35,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 21:00:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-06-03 21:00:35,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-03 21:00:35,728 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 195 flow. Second operand 5 states and 140 transitions. [2024-06-03 21:00:35,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 111 transitions, 499 flow [2024-06-03 21:00:35,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 481 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 21:00:35,858 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2024-06-03 21:00:35,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2024-06-03 21:00:35,859 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2024-06-03 21:00:35,859 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2024-06-03 21:00:35,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:00:35,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 12 remaining) [2024-06-03 21:00:35,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 12 remaining) [2024-06-03 21:00:35,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 12 remaining) [2024-06-03 21:00:35,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 12 remaining) [2024-06-03 21:00:35,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 12 remaining) [2024-06-03 21:00:35,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 12 remaining) [2024-06-03 21:00:35,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2024-06-03 21:00:35,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2024-06-03 21:00:35,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 12 remaining) [2024-06-03 21:00:35,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 12 remaining) [2024-06-03 21:00:35,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Thread1of1ForFork1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2024-06-03 21:00:35,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Thread1of1ForFork1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2024-06-03 21:00:35,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-06-03 21:00:36,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 21:00:36,071 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-06-03 21:00:36,077 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 21:00:36,077 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 21:00:36,083 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-03 21:00:36,083 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-03 21:00:36,084 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 09:00:36 BasicIcfg [2024-06-03 21:00:36,084 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 21:00:36,086 INFO L158 Benchmark]: Toolchain (without parser) took 11155.00ms. Allocated memory was 134.2MB in the beginning and 6.6GB in the end (delta: 6.5GB). Free memory was 62.3MB in the beginning and 5.7GB in the end (delta: -5.7GB). Peak memory consumption was 940.0MB. Max. memory is 16.1GB. [2024-06-03 21:00:36,086 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 134.2MB. Free memory was 104.7MB in the beginning and 104.7MB in the end (delta: 79.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 21:00:36,088 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 134.2MB. Free memory is still 65.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 21:00:36,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.58ms. Allocated memory was 134.2MB in the beginning and 184.5MB in the end (delta: 50.3MB). Free memory was 62.1MB in the beginning and 142.8MB in the end (delta: -80.7MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2024-06-03 21:00:36,093 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.88ms. Allocated memory is still 184.5MB. Free memory was 142.8MB in the beginning and 140.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 21:00:36,093 INFO L158 Benchmark]: Boogie Preprocessor took 37.72ms. Allocated memory is still 184.5MB. Free memory was 140.3MB in the beginning and 137.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-03 21:00:36,093 INFO L158 Benchmark]: RCFGBuilder took 781.48ms. Allocated memory is still 184.5MB. Free memory was 137.3MB in the beginning and 131.3MB in the end (delta: 6.1MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2024-06-03 21:00:36,095 INFO L158 Benchmark]: TraceAbstraction took 10020.31ms. Allocated memory was 184.5MB in the beginning and 6.6GB in the end (delta: 6.4GB). Free memory was 131.3MB in the beginning and 5.7GB in the end (delta: -5.6GB). Peak memory consumption was 960.7MB. Max. memory is 16.1GB. [2024-06-03 21:00:36,103 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 134.2MB. Free memory was 104.7MB in the beginning and 104.7MB in the end (delta: 79.4kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 134.2MB. Free memory is still 65.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.58ms. Allocated memory was 134.2MB in the beginning and 184.5MB in the end (delta: 50.3MB). Free memory was 62.1MB in the beginning and 142.8MB in the end (delta: -80.7MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.88ms. Allocated memory is still 184.5MB. Free memory was 142.8MB in the beginning and 140.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.72ms. Allocated memory is still 184.5MB. Free memory was 140.3MB in the beginning and 137.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 781.48ms. Allocated memory is still 184.5MB. Free memory was 137.3MB in the beginning and 131.3MB in the end (delta: 6.1MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * TraceAbstraction took 10020.31ms. Allocated memory was 184.5MB in the beginning and 6.6GB in the end (delta: 6.4GB). Free memory was 131.3MB in the beginning and 5.7GB in the end (delta: -5.6GB). Peak memory consumption was 960.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 92]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 93]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 139]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 140]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 96 locations, 12 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: 9.9s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 550 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 505 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1167 IncrementalHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 3 mSDtfsCounter, 1167 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=4, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 94 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 568 SizeOfPredicates, 1 NumberOfNonLiveVariables, 243 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 3/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-03 21:00:36,133 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