./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/sync01.i --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/sync01.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/pthread/sync01.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/sync01.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 20:32:40,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 20:32:40,515 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 20:32:40,520 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 20:32:40,520 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 20:32:40,549 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 20:32:40,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 20:32:40,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 20:32:40,550 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 20:32:40,553 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 20:32:40,553 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 20:32:40,553 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 20:32:40,554 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 20:32:40,555 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 20:32:40,555 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 20:32:40,556 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 20:32:40,556 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 20:32:40,556 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 20:32:40,556 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 20:32:40,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 20:32:40,556 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 20:32:40,557 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 20:32:40,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 20:32:40,557 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 20:32:40,557 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 20:32:40,557 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 20:32:40,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 20:32:40,558 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 20:32:40,558 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 20:32:40,558 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 20:32:40,559 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 20:32:40,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 20:32:40,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:32:40,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 20:32:40,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 20:32:40,560 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 20:32:40,560 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 20:32:40,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 20:32:40,561 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 20:32:40,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 20:32:40,561 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 20:32:40,561 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 20:32:40,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 20:32:40,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 20:32:40,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 20:32:40,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 20:32:40,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 20:32:40,799 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 20:32:40,800 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 20:32:40,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sync01.i [2024-06-03 20:32:41,826 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 20:32:42,017 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 20:32:42,018 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i [2024-06-03 20:32:42,034 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1571731b/6355c79ea16144d1845bac628a5a68eb/FLAGb028d4f43 [2024-06-03 20:32:42,044 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1571731b/6355c79ea16144d1845bac628a5a68eb [2024-06-03 20:32:42,045 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 20:32:42,046 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 20:32:42,048 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/sync01.yml/witness.yml [2024-06-03 20:32:42,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 20:32:42,144 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 20:32:42,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 20:32:42,145 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 20:32:42,149 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 20:32:42,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:32:42" (1/2) ... [2024-06-03 20:32:42,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e6ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:32:42, skipping insertion in model container [2024-06-03 20:32:42,151 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:32:42" (1/2) ... [2024-06-03 20:32:42,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@36f3ee93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:32:42, skipping insertion in model container [2024-06-03 20:32:42,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:32:42" (2/2) ... [2024-06-03 20:32:42,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e6ab9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:42, skipping insertion in model container [2024-06-03 20:32:42,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:32:42" (2/2) ... [2024-06-03 20:32:42,154 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 20:32:42,189 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 20:32:42,190 INFO L97 edCorrectnessWitness]: Location invariant before [L962-L962] (! multithreaded || ((0 <= num && num <= 1) && (num == 0 || num == 1))) && (! multithreaded || (m_locked || ((0 <= num && num <= 1) && (num == 0 || num == 1)))) [2024-06-03 20:32:42,190 INFO L97 edCorrectnessWitness]: Location invariant before [L961-L961] (! multithreaded || ((0 <= num && num <= 1) && (num == 0 || num == 1))) && (! multithreaded || (m_locked || ((0 <= num && num <= 1) && (num == 0 || num == 1)))) [2024-06-03 20:32:42,191 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-06-03 20:32:42,191 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 20:32:42,191 INFO L106 edCorrectnessWitness]: ghost_update [L935-L935] m_locked = 1; [2024-06-03 20:32:42,192 INFO L106 edCorrectnessWitness]: ghost_update [L947-L947] m_locked = 1; [2024-06-03 20:32:42,192 INFO L106 edCorrectnessWitness]: ghost_update [L947-L947] m_locked = 0; [2024-06-03 20:32:42,192 INFO L106 edCorrectnessWitness]: ghost_update [L960-L960] multithreaded = 1; [2024-06-03 20:32:42,192 INFO L106 edCorrectnessWitness]: ghost_update [L945-L945] m_locked = 1; [2024-06-03 20:32:42,192 INFO L106 edCorrectnessWitness]: ghost_update [L949-L949] m_locked = 0; [2024-06-03 20:32:42,192 INFO L106 edCorrectnessWitness]: ghost_update [L937-L937] m_locked = 1; [2024-06-03 20:32:42,192 INFO L106 edCorrectnessWitness]: ghost_update [L937-L937] m_locked = 0; [2024-06-03 20:32:42,192 INFO L106 edCorrectnessWitness]: ghost_update [L939-L939] m_locked = 0; [2024-06-03 20:32:42,229 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 20:32:42,535 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:32:42,547 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 Start Parsing Local Start Parsing Local [2024-06-03 20:32:42,645 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:32:42,691 INFO L206 MainTranslator]: Completed translation [2024-06-03 20:32:42,692 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:42 WrapperNode [2024-06-03 20:32:42,692 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 20:32:42,694 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 20:32:42,694 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 20:32:42,694 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 20:32:42,700 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 08:32:42" (1/1) ... [2024-06-03 20:32:42,728 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 08:32:42" (1/1) ... [2024-06-03 20:32:42,751 INFO L138 Inliner]: procedures = 268, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2024-06-03 20:32:42,751 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 20:32:42,752 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 20:32:42,752 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 20:32:42,752 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 20:32:42,759 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 08:32:42" (1/1) ... [2024-06-03 20:32:42,760 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 08:32:42" (1/1) ... [2024-06-03 20:32:42,776 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 08:32:42" (1/1) ... [2024-06-03 20:32:42,793 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-06-03 20:32:42,793 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 08:32:42" (1/1) ... [2024-06-03 20:32:42,793 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 08:32:42" (1/1) ... [2024-06-03 20:32:42,800 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 08:32:42" (1/1) ... [2024-06-03 20:32:42,803 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 08:32:42" (1/1) ... [2024-06-03 20:32:42,804 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 08:32:42" (1/1) ... [2024-06-03 20:32:42,805 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 08:32:42" (1/1) ... [2024-06-03 20:32:42,811 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 20:32:42,811 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 20:32:42,812 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 20:32:42,812 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 20:32:42,827 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 08:32:42" (1/1) ... [2024-06-03 20:32:42,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:32:42,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 20:32:42,862 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 20:32:42,868 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 20:32:42,890 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-03 20:32:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-03 20:32:42,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-03 20:32:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-03 20:32:42,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-03 20:32:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-03 20:32:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 20:32:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 20:32:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-03 20:32:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 20:32:42,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 20:32:42,894 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 20:32:43,000 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 20:32:43,001 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 20:32:43,221 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 20:32:43,221 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 20:32:43,361 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 20:32:43,361 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-03 20:32:43,362 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:32:43 BoogieIcfgContainer [2024-06-03 20:32:43,362 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 20:32:43,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 20:32:43,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 20:32:43,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 20:32:43,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 08:32:42" (1/4) ... [2024-06-03 20:32:43,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722ef264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 08:32:43, skipping insertion in model container [2024-06-03 20:32:43,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:32:42" (2/4) ... [2024-06-03 20:32:43,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722ef264 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 08:32:43, skipping insertion in model container [2024-06-03 20:32:43,370 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 08:32:42" (3/4) ... [2024-06-03 20:32:43,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722ef264 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 08:32:43, skipping insertion in model container [2024-06-03 20:32:43,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:32:43" (4/4) ... [2024-06-03 20:32:43,372 INFO L112 eAbstractionObserver]: Analyzing ICFG sync01.i [2024-06-03 20:32:43,390 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 20:32:43,390 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 20:32:43,390 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 20:32:43,425 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-03 20:32:43,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 34 transitions, 82 flow [2024-06-03 20:32:43,473 INFO L124 PetriNetUnfolderBase]: 2/32 cut-off events. [2024-06-03 20:32:43,473 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-03 20:32:43,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 2/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-06-03 20:32:43,483 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 34 transitions, 82 flow [2024-06-03 20:32:43,485 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 69 flow [2024-06-03 20:32:43,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 20:32:43,497 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;@53bd5510, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 20:32:43,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 20:32:43,500 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 20:32:43,500 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-03 20:32:43,500 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 20:32:43,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:43,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 20:32:43,501 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)] === [2024-06-03 20:32:43,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:43,505 INFO L85 PathProgramCache]: Analyzing trace with hash 321920697, now seen corresponding path program 1 times [2024-06-03 20:32:43,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:43,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801271194] [2024-06-03 20:32:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:43,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:43,783 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 20:32:43,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:43,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801271194] [2024-06-03 20:32:43,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801271194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:43,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:43,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 20:32:43,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588289143] [2024-06-03 20:32:43,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:43,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 20:32:43,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:43,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 20:32:43,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 20:32:43,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 34 [2024-06-03 20:32:43,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 20:32:43,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:43,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 34 [2024-06-03 20:32:43,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:43,955 INFO L124 PetriNetUnfolderBase]: 131/248 cut-off events. [2024-06-03 20:32:43,956 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-03 20:32:43,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 248 events. 131/248 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 874 event pairs, 58 based on Foata normal form. 20/262 useless extension candidates. Maximal degree in co-relation 465. Up to 170 conditions per place. [2024-06-03 20:32:43,960 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 21 selfloop transitions, 2 changer transitions 1/30 dead transitions. [2024-06-03 20:32:43,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 117 flow [2024-06-03 20:32:43,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:32:43,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:32:43,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-06-03 20:32:43,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-06-03 20:32:43,971 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 69 flow. Second operand 3 states and 52 transitions. [2024-06-03 20:32:43,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 117 flow [2024-06-03 20:32:43,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 20:32:43,975 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 63 flow [2024-06-03 20:32:43,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2024-06-03 20:32:43,981 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2024-06-03 20:32:43,981 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 63 flow [2024-06-03 20:32:43,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 20:32:43,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:43,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:43,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 20:32:43,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:32:43,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:43,984 INFO L85 PathProgramCache]: Analyzing trace with hash -850360102, now seen corresponding path program 1 times [2024-06-03 20:32:43,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:43,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051609433] [2024-06-03 20:32:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:43,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:44,130 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 20:32:44,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:44,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051609433] [2024-06-03 20:32:44,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051609433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:44,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:44,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:32:44,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769929945] [2024-06-03 20:32:44,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:44,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 20:32:44,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:44,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 20:32:44,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 20:32:44,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-03 20:32:44,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 63 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 20:32:44,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:44,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-03 20:32:44,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:44,273 INFO L124 PetriNetUnfolderBase]: 132/258 cut-off events. [2024-06-03 20:32:44,273 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-06-03 20:32:44,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 258 events. 132/258 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 879 event pairs, 41 based on Foata normal form. 18/274 useless extension candidates. Maximal degree in co-relation 492. Up to 121 conditions per place. [2024-06-03 20:32:44,278 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 30 selfloop transitions, 5 changer transitions 5/45 dead transitions. [2024-06-03 20:32:44,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 187 flow [2024-06-03 20:32:44,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:32:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:32:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-03 20:32:44,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4588235294117647 [2024-06-03 20:32:44,282 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 63 flow. Second operand 5 states and 78 transitions. [2024-06-03 20:32:44,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 187 flow [2024-06-03 20:32:44,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 183 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 20:32:44,287 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 90 flow [2024-06-03 20:32:44,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2024-06-03 20:32:44,288 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2024-06-03 20:32:44,288 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 90 flow [2024-06-03 20:32:44,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 20:32:44,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:44,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:44,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 20:32:44,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:32:44,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:44,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1422527212, now seen corresponding path program 1 times [2024-06-03 20:32:44,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:44,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604723130] [2024-06-03 20:32:44,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:44,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:44,393 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 20:32:44,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:44,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604723130] [2024-06-03 20:32:44,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604723130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:44,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:44,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 20:32:44,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455613762] [2024-06-03 20:32:44,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:44,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 20:32:44,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:44,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 20:32:44,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 20:32:44,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 34 [2024-06-03 20:32:44,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 20:32:44,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:44,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 34 [2024-06-03 20:32:44,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:44,458 INFO L124 PetriNetUnfolderBase]: 84/179 cut-off events. [2024-06-03 20:32:44,459 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2024-06-03 20:32:44,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 179 events. 84/179 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 615 event pairs, 32 based on Foata normal form. 24/198 useless extension candidates. Maximal degree in co-relation 180. Up to 100 conditions per place. [2024-06-03 20:32:44,459 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-03 20:32:44,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 146 flow [2024-06-03 20:32:44,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 20:32:44,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 20:32:44,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2024-06-03 20:32:44,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40441176470588236 [2024-06-03 20:32:44,462 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 90 flow. Second operand 4 states and 55 transitions. [2024-06-03 20:32:44,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 146 flow [2024-06-03 20:32:44,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 139 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 20:32:44,464 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2024-06-03 20:32:44,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2024-06-03 20:32:44,465 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-06-03 20:32:44,465 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2024-06-03 20:32:44,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 20:32:44,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 20:32:44,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 20:32:44,468 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 20:32:44,469 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 20:32:44,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 20:32:44,469 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-06-03 20:32:44,472 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 20:32:44,472 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 20:32:44,475 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 20:32:44,476 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 20:32:44,476 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 08:32:44 BasicIcfg [2024-06-03 20:32:44,477 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 20:32:44,480 INFO L158 Benchmark]: Toolchain (without parser) took 2333.21ms. Allocated memory was 174.1MB in the beginning and 251.7MB in the end (delta: 77.6MB). Free memory was 110.7MB in the beginning and 87.7MB in the end (delta: 23.1MB). Peak memory consumption was 105.9MB. Max. memory is 16.1GB. [2024-06-03 20:32:44,480 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 174.1MB. Free memory is still 137.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:32:44,480 INFO L158 Benchmark]: Witness Parser took 0.40ms. Allocated memory is still 174.1MB. Free memory is still 114.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:32:44,480 INFO L158 Benchmark]: CACSL2BoogieTranslator took 547.50ms. Allocated memory is still 174.1MB. Free memory was 110.3MB in the beginning and 73.8MB in the end (delta: 36.5MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-03 20:32:44,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.76ms. Allocated memory is still 174.1MB. Free memory was 73.8MB in the beginning and 71.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 20:32:44,481 INFO L158 Benchmark]: Boogie Preprocessor took 58.99ms. Allocated memory is still 174.1MB. Free memory was 71.4MB in the beginning and 68.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 20:32:44,483 INFO L158 Benchmark]: RCFGBuilder took 550.51ms. Allocated memory was 174.1MB in the beginning and 251.7MB in the end (delta: 77.6MB). Free memory was 68.9MB in the beginning and 207.2MB in the end (delta: -138.3MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2024-06-03 20:32:44,485 INFO L158 Benchmark]: TraceAbstraction took 1112.05ms. Allocated memory is still 251.7MB. Free memory was 207.2MB in the beginning and 87.7MB in the end (delta: 119.5MB). Peak memory consumption was 119.5MB. Max. memory is 16.1GB. [2024-06-03 20:32:44,490 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 174.1MB. Free memory is still 137.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.40ms. Allocated memory is still 174.1MB. Free memory is still 114.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 547.50ms. Allocated memory is still 174.1MB. Free memory was 110.3MB in the beginning and 73.8MB in the end (delta: 36.5MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.76ms. Allocated memory is still 174.1MB. Free memory was 73.8MB in the beginning and 71.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.99ms. Allocated memory is still 174.1MB. Free memory was 71.4MB in the beginning and 68.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 550.51ms. Allocated memory was 174.1MB in the beginning and 251.7MB in the end (delta: 77.6MB). Free memory was 68.9MB in the beginning and 207.2MB in the end (delta: -138.3MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1112.05ms. Allocated memory is still 251.7MB. Free memory was 207.2MB in the beginning and 87.7MB in the end (delta: 119.5MB). Peak memory consumption was 119.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 961]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 962]: 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, 53 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: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 63 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 195 IncrementalHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 1 mSDtfsCounter, 195 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=2, InterpolantAutomatonStates: 12, 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, 0.3s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 107 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2024-06-03 20:32:44,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE