./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.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/qw2004-2b.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-lit/qw2004-2b.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/qw2004-2b.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 22:48:15,040 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 22:48:15,103 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 22:48:15,112 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 22:48:15,112 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 22:48:15,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 22:48:15,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 22:48:15,138 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 22:48:15,138 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 22:48:15,142 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 22:48:15,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 22:48:15,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 22:48:15,143 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 22:48:15,144 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 22:48:15,144 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 22:48:15,144 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 22:48:15,144 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 22:48:15,145 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 22:48:15,145 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 22:48:15,145 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 22:48:15,145 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 22:48:15,146 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 22:48:15,146 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 22:48:15,146 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 22:48:15,146 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 22:48:15,146 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 22:48:15,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 22:48:15,147 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 22:48:15,147 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 22:48:15,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 22:48:15,148 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 22:48:15,148 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 22:48:15,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 22:48:15,149 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 22:48:15,149 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 22:48:15,149 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 22:48:15,149 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 22:48:15,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 22:48:15,149 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 22:48:15,150 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 22:48:15,150 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 22:48:15,150 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 22:48:15,150 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 22:48:15,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 22:48:15,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 22:48:15,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 22:48:15,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 22:48:15,410 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 22:48:15,411 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 22:48:15,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/qw2004-2b.yml/witness.yml [2024-06-03 22:48:15,516 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 22:48:15,516 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 22:48:15,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2024-06-03 22:48:16,631 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 22:48:16,865 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 22:48:16,865 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2024-06-03 22:48:16,879 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67375e24/8306525eb41a443bac7b877ede0bba19/FLAGe9f284aa3 [2024-06-03 22:48:16,893 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67375e24/8306525eb41a443bac7b877ede0bba19 [2024-06-03 22:48:16,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 22:48:16,895 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 22:48:16,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 22:48:16,898 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 22:48:16,902 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 22:48:16,902 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 10:48:15" (1/2) ... [2024-06-03 22:48:16,903 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a69c306 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 10:48:16, skipping insertion in model container [2024-06-03 22:48:16,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 10:48:15" (1/2) ... [2024-06-03 22:48:16,905 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a060964 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 10:48:16, skipping insertion in model container [2024-06-03 22:48:16,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 10:48:16" (2/2) ... [2024-06-03 22:48:16,905 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a69c306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 10:48:16, skipping insertion in model container [2024-06-03 22:48:16,905 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 10:48:16" (2/2) ... [2024-06-03 22:48:16,906 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 22:48:16,926 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 22:48:16,927 INFO L97 edCorrectnessWitness]: Location invariant before [L762-L762] ! multithreaded || (((((long long )stoppingEvent + (long long )stoppingFlag >= 0LL && (long long )stopped + (long long )stoppingFlag >= 0LL) && (long long )stopped + (long long )stoppingEvent >= 0LL) && (1LL + (long long )stoppingEvent) - (long long )stoppingFlag >= 0LL) && (1LL + (long long )stopped) - (long long )stoppingFlag >= 0LL) [2024-06-03 22:48:16,927 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 22:48:16,927 INFO L106 edCorrectnessWitness]: ghost_update [L761-L761] multithreaded = 1; [2024-06-03 22:48:16,969 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 22:48:17,243 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 22:48:17,252 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 22:48:17,338 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 22:48:17,370 INFO L206 MainTranslator]: Completed translation [2024-06-03 22:48:17,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 10:48:17 WrapperNode [2024-06-03 22:48:17,372 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 22:48:17,373 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 22:48:17,373 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 22:48:17,373 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 22:48:17,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 10:48:17" (1/1) ... [2024-06-03 22:48:17,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 10:48:17" (1/1) ... [2024-06-03 22:48:17,430 INFO L138 Inliner]: procedures = 174, calls = 33, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 120 [2024-06-03 22:48:17,431 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 22:48:17,432 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 22:48:17,432 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 22:48:17,432 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 22:48:17,441 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 10:48:17" (1/1) ... [2024-06-03 22:48:17,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 10:48:17" (1/1) ... [2024-06-03 22:48:17,443 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 10:48:17" (1/1) ... [2024-06-03 22:48:17,452 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-03 22:48:17,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 10:48:17" (1/1) ... [2024-06-03 22:48:17,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 10:48:17" (1/1) ... [2024-06-03 22:48:17,456 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 10:48:17" (1/1) ... [2024-06-03 22:48:17,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 10:48:17" (1/1) ... [2024-06-03 22:48:17,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 10:48:17" (1/1) ... [2024-06-03 22:48:17,459 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 10:48:17" (1/1) ... [2024-06-03 22:48:17,460 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 22:48:17,461 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 22:48:17,462 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 22:48:17,462 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 22:48:17,462 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 10:48:17" (1/1) ... [2024-06-03 22:48:17,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 22:48:17,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 22:48:17,485 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 22:48:17,522 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 22:48:17,532 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2024-06-03 22:48:17,533 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2024-06-03 22:48:17,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 22:48:17,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 22:48:17,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 22:48:17,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 22:48:17,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 22:48:17,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 22:48:17,534 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 22:48:17,623 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 22:48:17,624 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 22:48:17,754 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 22:48:17,755 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 22:48:17,817 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 22:48:17,817 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 22:48:17,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 10:48:17 BoogieIcfgContainer [2024-06-03 22:48:17,818 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 22:48:17,819 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 22:48:17,819 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 22:48:17,822 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 22:48:17,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 10:48:15" (1/4) ... [2024-06-03 22:48:17,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394c65e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 10:48:17, skipping insertion in model container [2024-06-03 22:48:17,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 10:48:16" (2/4) ... [2024-06-03 22:48:17,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394c65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 10:48:17, skipping insertion in model container [2024-06-03 22:48:17,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 10:48:17" (3/4) ... [2024-06-03 22:48:17,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394c65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 10:48:17, skipping insertion in model container [2024-06-03 22:48:17,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 10:48:17" (4/4) ... [2024-06-03 22:48:17,824 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2024-06-03 22:48:17,836 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 22:48:17,836 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-03 22:48:17,836 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 22:48:17,860 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 22:48:17,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 39 transitions, 82 flow [2024-06-03 22:48:17,907 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-06-03 22:48:17,907 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 22:48:17,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 4/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-03 22:48:17,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 39 transitions, 82 flow [2024-06-03 22:48:17,911 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 38 transitions, 79 flow [2024-06-03 22:48:17,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 22:48:17,924 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;@599ed37b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 22:48:17,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-06-03 22:48:17,927 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 22:48:17,927 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-03 22:48:17,927 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 22:48:17,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:48:17,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 22:48:17,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-03 22:48:17,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:48:17,933 INFO L85 PathProgramCache]: Analyzing trace with hash 400834564, now seen corresponding path program 1 times [2024-06-03 22:48:17,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:48:17,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716077281] [2024-06-03 22:48:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:48:17,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:48:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:48:18,202 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 22:48:18,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:48:18,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716077281] [2024-06-03 22:48:18,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716077281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:48:18,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:48:18,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 22:48:18,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555263707] [2024-06-03 22:48:18,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:48:18,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 22:48:18,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:48:18,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 22:48:18,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 22:48:18,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 39 [2024-06-03 22:48:18,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2024-06-03 22:48:18,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:48:18,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 39 [2024-06-03 22:48:18,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:48:18,386 INFO L124 PetriNetUnfolderBase]: 112/267 cut-off events. [2024-06-03 22:48:18,386 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 22:48:18,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 267 events. 112/267 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1074 event pairs, 18 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 470. Up to 198 conditions per place. [2024-06-03 22:48:18,388 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 13 selfloop transitions, 2 changer transitions 30/50 dead transitions. [2024-06-03 22:48:18,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 50 transitions, 175 flow [2024-06-03 22:48:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 22:48:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 22:48:18,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-06-03 22:48:18,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7008547008547008 [2024-06-03 22:48:18,401 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 79 flow. Second operand 3 states and 82 transitions. [2024-06-03 22:48:18,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 50 transitions, 175 flow [2024-06-03 22:48:18,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 50 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 22:48:18,405 INFO L231 Difference]: Finished difference. Result has 40 places, 19 transitions, 48 flow [2024-06-03 22:48:18,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=40, PETRI_TRANSITIONS=19} [2024-06-03 22:48:18,408 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2024-06-03 22:48:18,408 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 19 transitions, 48 flow [2024-06-03 22:48:18,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2024-06-03 22:48:18,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:48:18,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:48:18,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 22:48:18,409 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-03 22:48:18,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:48:18,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1345014333, now seen corresponding path program 1 times [2024-06-03 22:48:18,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:48:18,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549262593] [2024-06-03 22:48:18,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:48:18,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:48:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:48:18,506 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 22:48:18,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:48:18,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549262593] [2024-06-03 22:48:18,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549262593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:48:18,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:48:18,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 22:48:18,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611150087] [2024-06-03 22:48:18,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:48:18,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 22:48:18,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:48:18,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 22:48:18,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 22:48:18,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 39 [2024-06-03 22:48:18,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 19 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 22:48:18,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:48:18,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 39 [2024-06-03 22:48:18,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:48:18,545 INFO L124 PetriNetUnfolderBase]: 14/54 cut-off events. [2024-06-03 22:48:18,545 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-06-03 22:48:18,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 54 events. 14/54 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 2 based on Foata normal form. 5/55 useless extension candidates. Maximal degree in co-relation 95. Up to 22 conditions per place. [2024-06-03 22:48:18,546 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 14 selfloop transitions, 4 changer transitions 0/23 dead transitions. [2024-06-03 22:48:18,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 92 flow [2024-06-03 22:48:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 22:48:18,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 22:48:18,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-06-03 22:48:18,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2024-06-03 22:48:18,547 INFO L175 Difference]: Start difference. First operand has 40 places, 19 transitions, 48 flow. Second operand 4 states and 79 transitions. [2024-06-03 22:48:18,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 92 flow [2024-06-03 22:48:18,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 22:48:18,548 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 61 flow [2024-06-03 22:48:18,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=61, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2024-06-03 22:48:18,549 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -12 predicate places. [2024-06-03 22:48:18,549 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 61 flow [2024-06-03 22:48:18,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 22:48:18,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:48:18,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:48:18,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 22:48:18,550 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-03 22:48:18,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:48:18,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1893617389, now seen corresponding path program 1 times [2024-06-03 22:48:18,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:48:18,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906764906] [2024-06-03 22:48:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:48:18,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:48:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:48:18,628 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 22:48:18,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:48:18,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906764906] [2024-06-03 22:48:18,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906764906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:48:18,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:48:18,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 22:48:18,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557488509] [2024-06-03 22:48:18,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:48:18,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 22:48:18,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:48:18,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 22:48:18,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 22:48:18,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 39 [2024-06-03 22:48:18,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 61 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 22:48:18,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:48:18,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 39 [2024-06-03 22:48:18,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:48:18,673 INFO L124 PetriNetUnfolderBase]: 12/50 cut-off events. [2024-06-03 22:48:18,673 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-06-03 22:48:18,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 50 events. 12/50 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 1 based on Foata normal form. 2/49 useless extension candidates. Maximal degree in co-relation 97. Up to 15 conditions per place. [2024-06-03 22:48:18,674 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 14 selfloop transitions, 5 changer transitions 0/24 dead transitions. [2024-06-03 22:48:18,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 107 flow [2024-06-03 22:48:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 22:48:18,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 22:48:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-06-03 22:48:18,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-03 22:48:18,675 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 61 flow. Second operand 5 states and 95 transitions. [2024-06-03 22:48:18,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 107 flow [2024-06-03 22:48:18,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 22:48:18,676 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 70 flow [2024-06-03 22:48:18,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2024-06-03 22:48:18,677 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -9 predicate places. [2024-06-03 22:48:18,677 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 70 flow [2024-06-03 22:48:18,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 22:48:18,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:48:18,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:48:18,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 22:48:18,678 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-03 22:48:18,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:48:18,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1609151266, now seen corresponding path program 1 times [2024-06-03 22:48:18,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:48:18,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348338838] [2024-06-03 22:48:18,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:48:18,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:48:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:48:18,712 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 22:48:18,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:48:18,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348338838] [2024-06-03 22:48:18,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348338838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:48:18,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:48:18,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 22:48:18,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246130307] [2024-06-03 22:48:18,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:48:18,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 22:48:18,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:48:18,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 22:48:18,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 22:48:18,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 39 [2024-06-03 22:48:18,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 22:48:18,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:48:18,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 39 [2024-06-03 22:48:18,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:48:18,828 INFO L124 PetriNetUnfolderBase]: 8/42 cut-off events. [2024-06-03 22:48:18,828 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-06-03 22:48:18,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 42 events. 8/42 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 3 based on Foata normal form. 2/41 useless extension candidates. Maximal degree in co-relation 79. Up to 14 conditions per place. [2024-06-03 22:48:18,829 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 11 selfloop transitions, 2 changer transitions 2/22 dead transitions. [2024-06-03 22:48:18,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 100 flow [2024-06-03 22:48:18,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 22:48:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 22:48:18,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-06-03 22:48:18,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-06-03 22:48:18,831 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 70 flow. Second operand 4 states and 84 transitions. [2024-06-03 22:48:18,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 100 flow [2024-06-03 22:48:18,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 22 transitions, 88 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-03 22:48:18,832 INFO L231 Difference]: Finished difference. Result has 29 places, 19 transitions, 62 flow [2024-06-03 22:48:18,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2024-06-03 22:48:18,833 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -9 predicate places. [2024-06-03 22:48:18,833 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 62 flow [2024-06-03 22:48:18,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 22:48:18,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 22:48:18,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 22:48:18,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 22:48:18,834 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-06-03 22:48:18,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 22:48:18,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1311125283, now seen corresponding path program 1 times [2024-06-03 22:48:18,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 22:48:18,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53986207] [2024-06-03 22:48:18,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 22:48:18,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 22:48:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 22:48:18,919 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 22:48:18,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 22:48:18,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53986207] [2024-06-03 22:48:18,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53986207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 22:48:18,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 22:48:18,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 22:48:18,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345256406] [2024-06-03 22:48:18,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 22:48:18,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 22:48:18,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 22:48:18,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 22:48:18,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 22:48:18,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 39 [2024-06-03 22:48:18,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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 22:48:18,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 22:48:18,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 39 [2024-06-03 22:48:18,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 22:48:18,970 INFO L124 PetriNetUnfolderBase]: 8/40 cut-off events. [2024-06-03 22:48:18,971 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-06-03 22:48:18,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 40 events. 8/40 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 2/39 useless extension candidates. Maximal degree in co-relation 75. Up to 12 conditions per place. [2024-06-03 22:48:18,973 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2024-06-03 22:48:18,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 92 flow [2024-06-03 22:48:18,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 22:48:18,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 22:48:18,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-06-03 22:48:18,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2024-06-03 22:48:18,977 INFO L175 Difference]: Start difference. First operand has 29 places, 19 transitions, 62 flow. Second operand 5 states and 92 transitions. [2024-06-03 22:48:18,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 92 flow [2024-06-03 22:48:18,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 80 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-03 22:48:18,978 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2024-06-03 22:48:18,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2024-06-03 22:48:18,979 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -13 predicate places. [2024-06-03 22:48:18,979 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2024-06-03 22:48:18,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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 22:48:18,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 2 remaining) [2024-06-03 22:48:18,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-06-03 22:48:18,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 22:48:18,985 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-06-03 22:48:18,988 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 22:48:18,988 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 22:48:18,994 INFO L507 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-06-03 22:48:18,995 INFO L508 ceAbstractionStarter]: WitnessConsidered=1 [2024-06-03 22:48:18,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 10:48:18 BasicIcfg [2024-06-03 22:48:18,997 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 22:48:18,998 INFO L158 Benchmark]: Toolchain (without parser) took 2102.52ms. Allocated memory is still 174.1MB. Free memory was 101.0MB in the beginning and 116.4MB in the end (delta: -15.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 22:48:18,999 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 109.1MB. Free memory is still 69.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 22:48:18,999 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 174.1MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 22:48:19,000 INFO L158 Benchmark]: CACSL2BoogieTranslator took 473.95ms. Allocated memory is still 174.1MB. Free memory was 100.8MB in the beginning and 127.7MB in the end (delta: -27.0MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2024-06-03 22:48:19,000 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.37ms. Allocated memory is still 174.1MB. Free memory was 127.7MB in the beginning and 125.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 22:48:19,003 INFO L158 Benchmark]: Boogie Preprocessor took 28.65ms. Allocated memory is still 174.1MB. Free memory was 125.6MB in the beginning and 123.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 22:48:19,004 INFO L158 Benchmark]: RCFGBuilder took 356.49ms. Allocated memory is still 174.1MB. Free memory was 123.5MB in the beginning and 96.9MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-06-03 22:48:19,005 INFO L158 Benchmark]: TraceAbstraction took 1178.14ms. Allocated memory is still 174.1MB. Free memory was 96.3MB in the beginning and 116.4MB in the end (delta: -20.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 22:48:19,006 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 0.15ms. Allocated memory is still 109.1MB. Free memory is still 69.7MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 174.1MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 473.95ms. Allocated memory is still 174.1MB. Free memory was 100.8MB in the beginning and 127.7MB in the end (delta: -27.0MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.37ms. Allocated memory is still 174.1MB. Free memory was 127.7MB in the beginning and 125.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.65ms. Allocated memory is still 174.1MB. Free memory was 125.6MB in the beginning and 123.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 356.49ms. Allocated memory is still 174.1MB. Free memory was 123.5MB in the beginning and 96.9MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1178.14ms. Allocated memory is still 174.1MB. Free memory was 96.3MB in the beginning and 116.4MB in the end (delta: -20.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 762]: 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 3 procedures, 50 locations, 2 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: 1.1s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 106 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 231 IncrementalHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 11 mSDtfsCounter, 231 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=0, InterpolantAutomatonStates: 21, 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, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 267 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-03 22:48:19,029 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