./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/queue_longer.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/queue_longer.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/queue_longer.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/queue_longer.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-7724a2d-m [2024-06-27 23:05:01,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:05:01,180 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:05:01,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:05:01,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:05:01,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:05:01,199 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:05:01,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:05:01,199 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:05:01,200 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:05:01,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:05:01,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:05:01,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:05:01,201 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:05:01,201 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:05:01,201 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:05:01,202 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:05:01,202 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:05:01,202 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:05:01,202 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:05:01,203 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:05:01,205 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:05:01,205 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:05:01,206 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:05:01,206 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:05:01,206 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:05:01,206 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:05:01,206 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:05:01,207 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:05:01,207 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:05:01,208 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:05:01,208 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:05:01,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:05:01,208 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:05:01,209 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:05:01,209 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:05:01,209 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:05:01,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:05:01,209 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:05:01,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:05:01,210 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:05:01,210 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:05:01,210 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:05:01,210 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:05:01,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:05:01,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:05:01,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:05:01,440 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:05:01,441 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:05:01,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/queue_longer.yml/witness.yml [2024-06-27 23:05:01,534 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:05:01,537 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:05:01,538 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longer.i [2024-06-27 23:05:02,564 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:05:02,772 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:05:02,772 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i [2024-06-27 23:05:02,791 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54ac95815/fd2eebdaae514ac086029e0b134e7ea1/FLAG7ad4cfe2a [2024-06-27 23:05:02,806 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54ac95815/fd2eebdaae514ac086029e0b134e7ea1 [2024-06-27 23:05:02,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:05:02,808 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:05:02,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:05:02,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:05:02,813 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:05:02,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:05:01" (1/2) ... [2024-06-27 23:05:02,814 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ebdd26c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:02, skipping insertion in model container [2024-06-27 23:05:02,814 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:05:01" (1/2) ... [2024-06-27 23:05:02,815 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@713f8cc9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:02, skipping insertion in model container [2024-06-27 23:05:02,815 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:05:02" (2/2) ... [2024-06-27 23:05:02,816 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ebdd26c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:02, skipping insertion in model container [2024-06-27 23:05:02,816 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:05:02" (2/2) ... [2024-06-27 23:05:02,817 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:05:02,847 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:05:02,848 INFO L97 edCorrectnessWitness]: Location invariant before [L1064-L1064] ! multithreaded || (m_locked || ((-1LL + (long long )dequeue_flag) + (long long )enqueue_flag >= 0LL && (1LL - (long long )dequeue_flag) - (long long )enqueue_flag >= 0LL)) [2024-06-27 23:05:02,848 INFO L97 edCorrectnessWitness]: Location invariant before [L1063-L1063] ! multithreaded || (m_locked || ((-1LL + (long long )dequeue_flag) + (long long )enqueue_flag >= 0LL && (1LL - (long long )dequeue_flag) - (long long )enqueue_flag >= 0LL)) [2024-06-27 23:05:02,848 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:05:02,848 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-06-27 23:05:02,848 INFO L106 edCorrectnessWitness]: ghost_update [L1017-L1017] m_locked = 0; [2024-06-27 23:05:02,848 INFO L106 edCorrectnessWitness]: ghost_update [L1039-L1039] m_locked = 1; [2024-06-27 23:05:02,849 INFO L106 edCorrectnessWitness]: ghost_update [L1008-L1008] m_locked = 1; [2024-06-27 23:05:02,849 INFO L106 edCorrectnessWitness]: ghost_update [L1020-L1020] m_locked = 1; [2024-06-27 23:05:02,849 INFO L106 edCorrectnessWitness]: ghost_update [L1062-L1062] multithreaded = 1; [2024-06-27 23:05:02,849 INFO L106 edCorrectnessWitness]: ghost_update [L1029-L1029] m_locked = 0; [2024-06-27 23:05:02,849 INFO L106 edCorrectnessWitness]: ghost_update [L1048-L1048] m_locked = 0; [2024-06-27 23:05:02,889 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:05:03,297 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:05:03,304 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:05:03,380 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:05:03,457 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:05:03,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:03 WrapperNode [2024-06-27 23:05:03,458 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:05:03,458 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:05:03,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:05:03,459 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:05:03,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,500 INFO L138 Inliner]: procedures = 274, calls = 56, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 257 [2024-06-27 23:05:03,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:05:03,501 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:05:03,501 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:05:03,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:05:03,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,513 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,527 INFO L175 MemorySlicer]: Split 43 memory accesses to 4 slices as follows [2, 5, 4, 32]. 74 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 18 writes are split as follows [0, 0, 3, 15]. [2024-06-27 23:05:03,528 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,528 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,535 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,544 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:05:03,545 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:05:03,545 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:05:03,545 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:05:03,546 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:03" (1/1) ... [2024-06-27 23:05:03,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:05:03,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:05:03,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 23:05:03,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 23:05:03,596 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-27 23:05:03,596 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-27 23:05:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-27 23:05:03,597 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-27 23:05:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-27 23:05:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 23:05:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 23:05:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-06-27 23:05:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-06-27 23:05:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 23:05:03,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 23:05:03,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-06-27 23:05:03,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-06-27 23:05:03,598 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-27 23:05:03,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:05:03,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:05:03,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 23:05:03,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-27 23:05:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-27 23:05:03,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:05:03,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:05:03,600 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:05:03,721 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:05:03,723 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:05:04,096 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:05:04,097 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:05:04,336 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:05:04,336 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-27 23:05:04,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:05:04 BoogieIcfgContainer [2024-06-27 23:05:04,337 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:05:04,340 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:05:04,340 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:05:04,342 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:05:04,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:05:01" (1/4) ... [2024-06-27 23:05:04,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbf9562 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:05:04, skipping insertion in model container [2024-06-27 23:05:04,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:05:02" (2/4) ... [2024-06-27 23:05:04,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbf9562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:05:04, skipping insertion in model container [2024-06-27 23:05:04,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:03" (3/4) ... [2024-06-27 23:05:04,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbf9562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:05:04, skipping insertion in model container [2024-06-27 23:05:04,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:05:04" (4/4) ... [2024-06-27 23:05:04,345 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2024-06-27 23:05:04,359 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:05:04,360 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 23:05:04,360 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:05:04,411 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-27 23:05:04,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 92 flow [2024-06-27 23:05:04,454 INFO L124 PetriNetUnfolderBase]: 4/37 cut-off events. [2024-06-27 23:05:04,454 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 23:05:04,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 37 events. 4/37 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 66 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-27 23:05:04,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 39 transitions, 92 flow [2024-06-27 23:05:04,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 35 transitions, 79 flow [2024-06-27 23:05:04,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:05:04,470 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;@226695f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:05:04,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 23:05:04,473 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:05:04,473 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:05:04,473 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:05:04,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:04,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:05:04,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:05:04,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:04,478 INFO L85 PathProgramCache]: Analyzing trace with hash 653520595, now seen corresponding path program 1 times [2024-06-27 23:05:04,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:04,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724702546] [2024-06-27 23:05:04,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:04,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:04,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:04,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724702546] [2024-06-27 23:05:04,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724702546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:04,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:04,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:05:04,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213086663] [2024-06-27 23:05:04,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:04,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:05:04,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:04,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:05:04,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:05:04,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-27 23:05:04,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 79 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) [2024-06-27 23:05:04,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:04,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-27 23:05:04,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:05,131 INFO L124 PetriNetUnfolderBase]: 429/790 cut-off events. [2024-06-27 23:05:05,131 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-06-27 23:05:05,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1557 conditions, 790 events. 429/790 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3289 event pairs, 228 based on Foata normal form. 81/830 useless extension candidates. Maximal degree in co-relation 1486. Up to 410 conditions per place. [2024-06-27 23:05:05,137 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 36 selfloop transitions, 2 changer transitions 5/48 dead transitions. [2024-06-27 23:05:05,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 48 transitions, 197 flow [2024-06-27 23:05:05,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:05:05,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:05:05,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-06-27 23:05:05,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5726495726495726 [2024-06-27 23:05:05,147 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 79 flow. Second operand 3 states and 67 transitions. [2024-06-27 23:05:05,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 48 transitions, 197 flow [2024-06-27 23:05:05,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 48 transitions, 189 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:05:05,152 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 79 flow [2024-06-27 23:05:05,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-06-27 23:05:05,156 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2024-06-27 23:05:05,156 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 79 flow [2024-06-27 23:05:05,156 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) [2024-06-27 23:05:05,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:05,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:05,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:05:05,157 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:05:05,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:05,158 INFO L85 PathProgramCache]: Analyzing trace with hash 562365676, now seen corresponding path program 1 times [2024-06-27 23:05:05,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:05,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597078720] [2024-06-27 23:05:05,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:05,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:05,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:05,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:05,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597078720] [2024-06-27 23:05:05,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597078720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:05,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:05,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:05:05,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031567010] [2024-06-27 23:05:05,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:05,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:05:05,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:05,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:05:05,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:05:05,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 39 [2024-06-27 23:05:05,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:05,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:05,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 39 [2024-06-27 23:05:05,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:05,446 INFO L124 PetriNetUnfolderBase]: 484/907 cut-off events. [2024-06-27 23:05:05,446 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-06-27 23:05:05,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1867 conditions, 907 events. 484/907 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3969 event pairs, 180 based on Foata normal form. 20/927 useless extension candidates. Maximal degree in co-relation 1042. Up to 442 conditions per place. [2024-06-27 23:05:05,451 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 43 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2024-06-27 23:05:05,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 234 flow [2024-06-27 23:05:05,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:05:05,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:05:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-06-27 23:05:05,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2024-06-27 23:05:05,459 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 79 flow. Second operand 5 states and 81 transitions. [2024-06-27 23:05:05,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 234 flow [2024-06-27 23:05:05,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 231 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:05:05,461 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 134 flow [2024-06-27 23:05:05,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2024-06-27 23:05:05,462 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2024-06-27 23:05:05,462 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 134 flow [2024-06-27 23:05:05,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:05,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:05,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:05,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:05:05,463 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:05:05,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:05,465 INFO L85 PathProgramCache]: Analyzing trace with hash 253468679, now seen corresponding path program 1 times [2024-06-27 23:05:05,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:05,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893578126] [2024-06-27 23:05:05,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:05,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:05,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:05,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893578126] [2024-06-27 23:05:05,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893578126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:05,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:05,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:05:05,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816598081] [2024-06-27 23:05:05,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:05,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:05:05,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:05,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:05:05,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:05:05,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-27 23:05:05,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:05,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:05,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-27 23:05:05,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:05,857 INFO L124 PetriNetUnfolderBase]: 597/1149 cut-off events. [2024-06-27 23:05:05,857 INFO L125 PetriNetUnfolderBase]: For 562/566 co-relation queries the response was YES. [2024-06-27 23:05:05,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2794 conditions, 1149 events. 597/1149 cut-off events. For 562/566 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5137 event pairs, 291 based on Foata normal form. 27/1174 useless extension candidates. Maximal degree in co-relation 2315. Up to 705 conditions per place. [2024-06-27 23:05:05,861 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 47 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2024-06-27 23:05:05,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 56 transitions, 296 flow [2024-06-27 23:05:05,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:05:05,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:05:05,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-06-27 23:05:05,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-27 23:05:05,864 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 134 flow. Second operand 4 states and 70 transitions. [2024-06-27 23:05:05,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 56 transitions, 296 flow [2024-06-27 23:05:05,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 56 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:05:05,867 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 152 flow [2024-06-27 23:05:05,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-06-27 23:05:05,868 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2024-06-27 23:05:05,868 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 152 flow [2024-06-27 23:05:05,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:05,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:05,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:05,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:05:05,869 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:05:05,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:05,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1785586291, now seen corresponding path program 1 times [2024-06-27 23:05:05,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:05,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920958736] [2024-06-27 23:05:05,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:05,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:06,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:06,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920958736] [2024-06-27 23:05:06,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920958736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:06,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:06,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:05:06,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249214373] [2024-06-27 23:05:06,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:06,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:05:06,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:06,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:05:06,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:05:06,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 39 [2024-06-27 23:05:06,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:06,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:06,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 39 [2024-06-27 23:05:06,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:06,189 INFO L124 PetriNetUnfolderBase]: 328/666 cut-off events. [2024-06-27 23:05:06,189 INFO L125 PetriNetUnfolderBase]: For 384/388 co-relation queries the response was YES. [2024-06-27 23:05:06,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1687 conditions, 666 events. 328/666 cut-off events. For 384/388 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2596 event pairs, 127 based on Foata normal form. 40/706 useless extension candidates. Maximal degree in co-relation 1088. Up to 321 conditions per place. [2024-06-27 23:05:06,192 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 32 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-27 23:05:06,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 232 flow [2024-06-27 23:05:06,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:05:06,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:05:06,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-06-27 23:05:06,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358974358974359 [2024-06-27 23:05:06,195 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 152 flow. Second operand 5 states and 70 transitions. [2024-06-27 23:05:06,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 232 flow [2024-06-27 23:05:06,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 216 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 23:05:06,200 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 128 flow [2024-06-27 23:05:06,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-27 23:05:06,201 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2024-06-27 23:05:06,202 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 128 flow [2024-06-27 23:05:06,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:06,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:06,202 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] [2024-06-27 23:05:06,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:05:06,202 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:05:06,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:06,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1621658360, now seen corresponding path program 1 times [2024-06-27 23:05:06,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:06,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487935771] [2024-06-27 23:05:06,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:06,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:06,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:06,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487935771] [2024-06-27 23:05:06,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487935771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:06,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:06,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:05:06,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974329540] [2024-06-27 23:05:06,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:06,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:05:06,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:06,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:05:06,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:05:06,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 39 [2024-06-27 23:05:06,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:06,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:06,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 39 [2024-06-27 23:05:06,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:06,841 INFO L124 PetriNetUnfolderBase]: 864/1623 cut-off events. [2024-06-27 23:05:06,842 INFO L125 PetriNetUnfolderBase]: For 1161/1163 co-relation queries the response was YES. [2024-06-27 23:05:06,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3930 conditions, 1623 events. 864/1623 cut-off events. For 1161/1163 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8001 event pairs, 373 based on Foata normal form. 11/1632 useless extension candidates. Maximal degree in co-relation 1763. Up to 717 conditions per place. [2024-06-27 23:05:06,847 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 27 selfloop transitions, 3 changer transitions 53/86 dead transitions. [2024-06-27 23:05:06,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 86 transitions, 480 flow [2024-06-27 23:05:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:05:06,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:05:06,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-27 23:05:06,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38782051282051283 [2024-06-27 23:05:06,848 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 128 flow. Second operand 8 states and 121 transitions. [2024-06-27 23:05:06,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 86 transitions, 480 flow [2024-06-27 23:05:06,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 86 transitions, 438 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 23:05:06,851 INFO L231 Difference]: Finished difference. Result has 52 places, 32 transitions, 130 flow [2024-06-27 23:05:06,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=130, PETRI_PLACES=52, PETRI_TRANSITIONS=32} [2024-06-27 23:05:06,852 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2024-06-27 23:05:06,852 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 32 transitions, 130 flow [2024-06-27 23:05:06,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:06,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:06,852 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] [2024-06-27 23:05:06,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:05:06,852 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:05:06,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:06,853 INFO L85 PathProgramCache]: Analyzing trace with hash 51909574, now seen corresponding path program 2 times [2024-06-27 23:05:06,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:06,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128717736] [2024-06-27 23:05:06,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:06,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:07,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:07,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128717736] [2024-06-27 23:05:07,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128717736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:07,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:07,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:05:07,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090848230] [2024-06-27 23:05:07,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:07,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:05:07,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:07,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:05:07,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:05:07,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2024-06-27 23:05:07,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 32 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:07,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:07,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2024-06-27 23:05:07,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:07,190 INFO L124 PetriNetUnfolderBase]: 241/494 cut-off events. [2024-06-27 23:05:07,190 INFO L125 PetriNetUnfolderBase]: For 402/404 co-relation queries the response was YES. [2024-06-27 23:05:07,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1181 conditions, 494 events. 241/494 cut-off events. For 402/404 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1870 event pairs, 130 based on Foata normal form. 9/503 useless extension candidates. Maximal degree in co-relation 1133. Up to 285 conditions per place. [2024-06-27 23:05:07,192 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2024-06-27 23:05:07,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 228 flow [2024-06-27 23:05:07,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:05:07,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:05:07,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-06-27 23:05:07,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-06-27 23:05:07,193 INFO L175 Difference]: Start difference. First operand has 52 places, 32 transitions, 130 flow. Second operand 4 states and 66 transitions. [2024-06-27 23:05:07,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 228 flow [2024-06-27 23:05:07,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 204 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:05:07,195 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2024-06-27 23:05:07,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2024-06-27 23:05:07,197 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2024-06-27 23:05:07,198 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2024-06-27 23:05:07,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:07,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 23:05:07,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 23:05:07,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 23:05:07,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 23:05:07,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:05:07,201 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-06-27 23:05:07,203 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 23:05:07,203 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 23:05:07,206 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 23:05:07,206 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 23:05:07,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 11:05:07 BasicIcfg [2024-06-27 23:05:07,207 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 23:05:07,209 INFO L158 Benchmark]: Toolchain (without parser) took 4399.87ms. Allocated memory was 157.3MB in the beginning and 318.8MB in the end (delta: 161.5MB). Free memory was 94.8MB in the beginning and 190.1MB in the end (delta: -95.3MB). Peak memory consumption was 68.0MB. Max. memory is 16.1GB. [2024-06-27 23:05:07,209 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 157.3MB. Free memory was 118.2MB in the beginning and 118.1MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:05:07,213 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 157.3MB. Free memory was 114.9MB in the beginning and 114.7MB in the end (delta: 169.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 23:05:07,214 INFO L158 Benchmark]: CACSL2BoogieTranslator took 649.06ms. Allocated memory was 157.3MB in the beginning and 234.9MB in the end (delta: 77.6MB). Free memory was 94.8MB in the beginning and 196.5MB in the end (delta: -101.6MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2024-06-27 23:05:07,214 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.29ms. Allocated memory is still 234.9MB. Free memory was 196.5MB in the beginning and 193.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 23:05:07,214 INFO L158 Benchmark]: Boogie Preprocessor took 42.97ms. Allocated memory is still 234.9MB. Free memory was 193.3MB in the beginning and 189.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 23:05:07,214 INFO L158 Benchmark]: RCFGBuilder took 792.31ms. Allocated memory is still 234.9MB. Free memory was 189.1MB in the beginning and 106.3MB in the end (delta: 82.8MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. [2024-06-27 23:05:07,214 INFO L158 Benchmark]: TraceAbstraction took 2867.31ms. Allocated memory was 234.9MB in the beginning and 318.8MB in the end (delta: 83.9MB). Free memory was 106.3MB in the beginning and 190.1MB in the end (delta: -83.8MB). Peak memory consumption was 79.1kB. Max. memory is 16.1GB. [2024-06-27 23:05:07,217 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 157.3MB. Free memory was 118.2MB in the beginning and 118.1MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.18ms. Allocated memory is still 157.3MB. Free memory was 114.9MB in the beginning and 114.7MB in the end (delta: 169.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 649.06ms. Allocated memory was 157.3MB in the beginning and 234.9MB in the end (delta: 77.6MB). Free memory was 94.8MB in the beginning and 196.5MB in the end (delta: -101.6MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.29ms. Allocated memory is still 234.9MB. Free memory was 196.5MB in the beginning and 193.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.97ms. Allocated memory is still 234.9MB. Free memory was 193.3MB in the beginning and 189.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 792.31ms. Allocated memory is still 234.9MB. Free memory was 189.1MB in the beginning and 106.3MB in the end (delta: 82.8MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2867.31ms. Allocated memory was 234.9MB in the beginning and 318.8MB in the end (delta: 83.9MB). Free memory was 106.3MB in the beginning and 190.1MB in the end (delta: -83.8MB). Peak memory consumption was 79.1kB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1063]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1064]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 60 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 209 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 190 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 631 IncrementalHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 7 mSDtfsCounter, 631 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=3, InterpolantAutomatonStates: 29, 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, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 563 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 23:05:07,260 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