./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_33-traces-v-matters_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/13-privatized_33-traces-v-matters_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_33-traces-v-matters_true.i ./goblint.2024-05-07_14-17-48.files/protection/13-privatized_33-traces-v-matters_true.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 12:52:34,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:52:34,849 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:52:34,854 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:52:34,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:52:34,880 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:52:34,881 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:52:34,881 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:52:34,882 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:52:34,885 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:52:34,885 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:52:34,885 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:52:34,886 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:52:34,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:52:34,887 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:52:34,888 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:52:34,888 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:52:34,888 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:52:34,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:52:34,889 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:52:34,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:52:34,890 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:52:34,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:52:34,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:52:34,891 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:52:34,891 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:52:34,891 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:52:34,891 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:52:34,892 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:52:34,892 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:52:34,893 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:52:34,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:52:34,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:52:34,893 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:52:34,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:52:34,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:52:34,894 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:52:34,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:52:34,894 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:52:34,894 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:52:34,895 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:52:34,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:52:34,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:52:34,895 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:52:35,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:52:35,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:52:35,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:52:35,240 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:52:35,240 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:52:35,241 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/13-privatized_33-traces-v-matters_true.yml/witness.yml [2024-05-12 12:52:35,334 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:52:35,336 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:52:35,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_33-traces-v-matters_true.i [2024-05-12 12:52:36,402 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:52:36,563 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:52:36,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_33-traces-v-matters_true.i [2024-05-12 12:52:36,573 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cafc45b6c/09824d5e4ad5427eadb96cb15fb773fc/FLAGa36354fff [2024-05-12 12:52:36,583 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cafc45b6c/09824d5e4ad5427eadb96cb15fb773fc [2024-05-12 12:52:36,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:52:36,584 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:52:36,586 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:52:36,586 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:52:36,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:52:36,590 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:52:35" (1/2) ... [2024-05-12 12:52:36,591 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd41bb4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:36, skipping insertion in model container [2024-05-12 12:52:36,591 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:52:35" (1/2) ... [2024-05-12 12:52:36,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@212c1ab and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:36, skipping insertion in model container [2024-05-12 12:52:36,592 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:52:36" (2/2) ... [2024-05-12 12:52:36,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd41bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:36, skipping insertion in model container [2024-05-12 12:52:36,593 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:52:36" (2/2) ... [2024-05-12 12:52:36,593 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:52:36,614 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:52:36,615 INFO L97 edCorrectnessWitness]: Location invariant before [L698-L698] ! multithreaded || ((((0 <= g && g <= 42) && g <= 127) && g % 2 == 0) && ((g == 0 || g == 2) || g == 42)) [2024-05-12 12:52:36,615 INFO L103 edCorrectnessWitness]: ghost_variable D_locked = 0 [2024-05-12 12:52:36,615 INFO L103 edCorrectnessWitness]: ghost_variable E_locked = 0 [2024-05-12 12:52:36,615 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:52:36,615 INFO L103 edCorrectnessWitness]: ghost_variable C_locked = 0 [2024-05-12 12:52:36,615 INFO L106 edCorrectnessWitness]: ghost_update [L702-L702] E_locked = 1; [2024-05-12 12:52:36,616 INFO L106 edCorrectnessWitness]: ghost_update [L692-L692] D_locked = 0; [2024-05-12 12:52:36,616 INFO L106 edCorrectnessWitness]: ghost_update [L701-L701] C_locked = 0; [2024-05-12 12:52:36,616 INFO L106 edCorrectnessWitness]: ghost_update [L699-L699] D_locked = 1; [2024-05-12 12:52:36,616 INFO L106 edCorrectnessWitness]: ghost_update [L691-L691] C_locked = 0; [2024-05-12 12:52:36,616 INFO L106 edCorrectnessWitness]: ghost_update [L698-L698] C_locked = 1; [2024-05-12 12:52:36,616 INFO L106 edCorrectnessWitness]: ghost_update [L690-L690] E_locked = 0; [2024-05-12 12:52:36,616 INFO L106 edCorrectnessWitness]: ghost_update [L687-L687] E_locked = 1; [2024-05-12 12:52:36,616 INFO L106 edCorrectnessWitness]: ghost_update [L686-L686] C_locked = 1; [2024-05-12 12:52:36,617 INFO L106 edCorrectnessWitness]: ghost_update [L697-L697] multithreaded = 1; [2024-05-12 12:52:36,617 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] D_locked = 1; [2024-05-12 12:52:36,639 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:52:36,747 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_33-traces-v-matters_true.i[1093,1106] [2024-05-12 12:52:36,824 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:52:36,833 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:52:36,866 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_33-traces-v-matters_true.i[1093,1106] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:52:36,920 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:52:36,954 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:52:36,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:36 WrapperNode [2024-05-12 12:52:36,954 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:52:36,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:52:36,956 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:52:36,956 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:52:36,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:36" (1/1) ... [2024-05-12 12:52:36,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:36" (1/1) ... [2024-05-12 12:52:37,009 INFO L138 Inliner]: procedures = 163, calls = 40, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2024-05-12 12:52:37,010 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:52:37,011 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:52:37,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:52:37,011 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:52:37,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:36" (1/1) ... [2024-05-12 12:52:37,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:36" (1/1) ... [2024-05-12 12:52:37,028 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:36" (1/1) ... [2024-05-12 12:52:37,049 INFO L175 MemorySlicer]: Split 18 memory accesses to 5 slices as follows [2, 5, 5, 5, 1]. 28 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-05-12 12:52:37,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:36" (1/1) ... [2024-05-12 12:52:37,050 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:36" (1/1) ... [2024-05-12 12:52:37,061 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:36" (1/1) ... [2024-05-12 12:52:37,068 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:36" (1/1) ... [2024-05-12 12:52:37,069 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:36" (1/1) ... [2024-05-12 12:52:37,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:36" (1/1) ... [2024-05-12 12:52:37,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:52:37,080 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:52:37,080 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:52:37,080 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:52:37,081 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:36" (1/1) ... [2024-05-12 12:52:37,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:52:37,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:52:37,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-05-12 12:52:37,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-05-12 12:52:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:52:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:52:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:52:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 12:52:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 12:52:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-05-12 12:52:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:52:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:52:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-05-12 12:52:37,142 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-05-12 12:52:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:52:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:52:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:52:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:52:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 12:52:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 12:52:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-05-12 12:52:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:52:37,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:52:37,145 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 12:52:37,297 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:52:37,298 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:52:37,433 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:52:37,433 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:52:37,506 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:52:37,506 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 12:52:37,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:52:37 BoogieIcfgContainer [2024-05-12 12:52:37,506 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:52:37,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:52:37,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:52:37,518 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:52:37,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:52:35" (1/4) ... [2024-05-12 12:52:37,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7612f6e2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:52:37, skipping insertion in model container [2024-05-12 12:52:37,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:52:36" (2/4) ... [2024-05-12 12:52:37,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7612f6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:52:37, skipping insertion in model container [2024-05-12 12:52:37,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:36" (3/4) ... [2024-05-12 12:52:37,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7612f6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:52:37, skipping insertion in model container [2024-05-12 12:52:37,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:52:37" (4/4) ... [2024-05-12 12:52:37,523 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_33-traces-v-matters_true.i [2024-05-12 12:52:37,536 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:52:37,537 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-05-12 12:52:37,537 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:52:37,571 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 12:52:37,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 34 transitions, 72 flow [2024-05-12 12:52:37,617 INFO L124 PetriNetUnfolderBase]: 1/33 cut-off events. [2024-05-12 12:52:37,618 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:52:37,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 33 events. 1/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2024-05-12 12:52:37,620 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 34 transitions, 72 flow [2024-05-12 12:52:37,623 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 30 transitions, 63 flow [2024-05-12 12:52:37,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:52:37,641 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;@7b025940, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:52:37,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-05-12 12:52:37,650 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:52:37,651 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-05-12 12:52:37,651 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:52:37,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:37,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 12:52:37,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 12:52:37,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:37,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1396073265, now seen corresponding path program 1 times [2024-05-12 12:52:37,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:37,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350259173] [2024-05-12 12:52:37,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:37,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:38,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:38,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350259173] [2024-05-12 12:52:38,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350259173] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:38,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:38,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:52:38,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924892760] [2024-05-12 12:52:38,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:38,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:52:38,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:38,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:52:38,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:52:38,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2024-05-12 12:52:38,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:38,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:38,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2024-05-12 12:52:38,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:38,222 INFO L124 PetriNetUnfolderBase]: 61/186 cut-off events. [2024-05-12 12:52:38,222 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:52:38,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 186 events. 61/186 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 735 event pairs, 31 based on Foata normal form. 3/184 useless extension candidates. Maximal degree in co-relation 320. Up to 122 conditions per place. [2024-05-12 12:52:38,225 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 24 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2024-05-12 12:52:38,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 131 flow [2024-05-12 12:52:38,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:52:38,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:52:38,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-05-12 12:52:38,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2024-05-12 12:52:38,237 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 63 flow. Second operand 3 states and 64 transitions. [2024-05-12 12:52:38,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 131 flow [2024-05-12 12:52:38,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:52:38,243 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 81 flow [2024-05-12 12:52:38,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2024-05-12 12:52:38,248 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2024-05-12 12:52:38,248 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 81 flow [2024-05-12 12:52:38,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:38,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:38,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:38,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:52:38,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 12:52:38,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:38,250 INFO L85 PathProgramCache]: Analyzing trace with hash 289733144, now seen corresponding path program 1 times [2024-05-12 12:52:38,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:38,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74252802] [2024-05-12 12:52:38,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:38,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:38,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:38,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74252802] [2024-05-12 12:52:38,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74252802] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:38,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:38,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:52:38,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033663727] [2024-05-12 12:52:38,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:38,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:52:38,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:38,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:52:38,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:52:38,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2024-05-12 12:52:38,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:38,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:38,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2024-05-12 12:52:38,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:38,484 INFO L124 PetriNetUnfolderBase]: 70/228 cut-off events. [2024-05-12 12:52:38,488 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-05-12 12:52:38,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 228 events. 70/228 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1019 event pairs, 14 based on Foata normal form. 6/233 useless extension candidates. Maximal degree in co-relation 413. Up to 86 conditions per place. [2024-05-12 12:52:38,490 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 29 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2024-05-12 12:52:38,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 163 flow [2024-05-12 12:52:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:52:38,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:52:38,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-05-12 12:52:38,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-05-12 12:52:38,492 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 81 flow. Second operand 3 states and 68 transitions. [2024-05-12 12:52:38,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 163 flow [2024-05-12 12:52:38,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:52:38,493 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 80 flow [2024-05-12 12:52:38,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2024-05-12 12:52:38,494 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2024-05-12 12:52:38,494 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 80 flow [2024-05-12 12:52:38,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:38,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:38,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:38,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 12:52:38,495 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 12:52:38,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:38,495 INFO L85 PathProgramCache]: Analyzing trace with hash -915879978, now seen corresponding path program 1 times [2024-05-12 12:52:38,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:38,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564922215] [2024-05-12 12:52:38,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:38,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:38,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:38,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564922215] [2024-05-12 12:52:38,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564922215] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:38,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:38,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:52:38,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748348913] [2024-05-12 12:52:38,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:38,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:52:38,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:38,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:52:38,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:52:38,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-05-12 12:52:38,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:38,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:38,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-05-12 12:52:38,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:38,743 INFO L124 PetriNetUnfolderBase]: 74/232 cut-off events. [2024-05-12 12:52:38,743 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-05-12 12:52:38,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 232 events. 74/232 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1023 event pairs, 34 based on Foata normal form. 15/246 useless extension candidates. Maximal degree in co-relation 440. Up to 116 conditions per place. [2024-05-12 12:52:38,744 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 22 selfloop transitions, 2 changer transitions 21/54 dead transitions. [2024-05-12 12:52:38,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 54 transitions, 220 flow [2024-05-12 12:52:38,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:38,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:38,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-05-12 12:52:38,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5647058823529412 [2024-05-12 12:52:38,749 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 80 flow. Second operand 5 states and 96 transitions. [2024-05-12 12:52:38,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 54 transitions, 220 flow [2024-05-12 12:52:38,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 214 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-05-12 12:52:38,751 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 79 flow [2024-05-12 12:52:38,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2024-05-12 12:52:38,753 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2024-05-12 12:52:38,753 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 79 flow [2024-05-12 12:52:38,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:38,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:38,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:38,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:52:38,754 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 12:52:38,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:38,755 INFO L85 PathProgramCache]: Analyzing trace with hash -779306687, now seen corresponding path program 1 times [2024-05-12 12:52:38,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:38,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586294687] [2024-05-12 12:52:38,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:38,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:38,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:38,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586294687] [2024-05-12 12:52:38,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586294687] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:38,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:38,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:52:38,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527078471] [2024-05-12 12:52:38,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:38,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:52:38,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:38,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:52:38,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:52:38,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-05-12 12:52:38,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 79 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:38,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:38,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-05-12 12:52:38,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:39,053 INFO L124 PetriNetUnfolderBase]: 15/72 cut-off events. [2024-05-12 12:52:39,053 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-05-12 12:52:39,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 72 events. 15/72 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 5 based on Foata normal form. 5/76 useless extension candidates. Maximal degree in co-relation 137. Up to 29 conditions per place. [2024-05-12 12:52:39,056 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 15 selfloop transitions, 6 changer transitions 1/32 dead transitions. [2024-05-12 12:52:39,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 32 transitions, 131 flow [2024-05-12 12:52:39,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:39,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:39,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-05-12 12:52:39,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235294117647059 [2024-05-12 12:52:39,061 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 79 flow. Second operand 5 states and 89 transitions. [2024-05-12 12:52:39,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 32 transitions, 131 flow [2024-05-12 12:52:39,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 119 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-05-12 12:52:39,063 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 79 flow [2024-05-12 12:52:39,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2024-05-12 12:52:39,065 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2024-05-12 12:52:39,065 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 79 flow [2024-05-12 12:52:39,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:39,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:39,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:39,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 12:52:39,066 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 12:52:39,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:39,068 INFO L85 PathProgramCache]: Analyzing trace with hash 615385733, now seen corresponding path program 2 times [2024-05-12 12:52:39,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:39,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192663837] [2024-05-12 12:52:39,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:39,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:39,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:39,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:39,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192663837] [2024-05-12 12:52:39,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192663837] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:39,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:39,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:52:39,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469975430] [2024-05-12 12:52:39,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:39,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:52:39,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:39,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:52:39,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:52:39,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-05-12 12:52:39,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 79 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:39,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:39,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-05-12 12:52:39,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:39,239 INFO L124 PetriNetUnfolderBase]: 9/62 cut-off events. [2024-05-12 12:52:39,240 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-05-12 12:52:39,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 62 events. 9/62 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 116 event pairs, 1 based on Foata normal form. 4/65 useless extension candidates. Maximal degree in co-relation 116. Up to 22 conditions per place. [2024-05-12 12:52:39,242 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 17 selfloop transitions, 6 changer transitions 2/35 dead transitions. [2024-05-12 12:52:39,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 147 flow [2024-05-12 12:52:39,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:39,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-05-12 12:52:39,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5411764705882353 [2024-05-12 12:52:39,243 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 79 flow. Second operand 5 states and 92 transitions. [2024-05-12 12:52:39,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 147 flow [2024-05-12 12:52:39,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 138 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 12:52:39,245 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 92 flow [2024-05-12 12:52:39,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2024-05-12 12:52:39,247 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2024-05-12 12:52:39,247 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 92 flow [2024-05-12 12:52:39,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:39,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:39,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:39,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 12:52:39,248 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 12:52:39,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:39,249 INFO L85 PathProgramCache]: Analyzing trace with hash -997395366, now seen corresponding path program 1 times [2024-05-12 12:52:39,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:39,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344575944] [2024-05-12 12:52:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:39,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:39,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:39,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:39,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344575944] [2024-05-12 12:52:39,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344575944] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:39,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:39,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:52:39,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703323977] [2024-05-12 12:52:39,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:39,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:52:39,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:39,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:52:39,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:52:39,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2024-05-12 12:52:39,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 92 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:39,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:39,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2024-05-12 12:52:39,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:39,430 INFO L124 PetriNetUnfolderBase]: 3/30 cut-off events. [2024-05-12 12:52:39,430 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-05-12 12:52:39,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 30 events. 3/30 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 3 based on Foata normal form. 1/30 useless extension candidates. Maximal degree in co-relation 52. Up to 11 conditions per place. [2024-05-12 12:52:39,431 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2024-05-12 12:52:39,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 20 transitions, 95 flow [2024-05-12 12:52:39,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:39,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:39,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-05-12 12:52:39,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4764705882352941 [2024-05-12 12:52:39,432 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 92 flow. Second operand 5 states and 81 transitions. [2024-05-12 12:52:39,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 20 transitions, 95 flow [2024-05-12 12:52:39,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 20 transitions, 87 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 12:52:39,432 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2024-05-12 12:52:39,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2024-05-12 12:52:39,433 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2024-05-12 12:52:39,433 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2024-05-12 12:52:39,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:39,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 3 remaining) [2024-05-12 12:52:39,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-05-12 12:52:39,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-05-12 12:52:39,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 12:52:39,436 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-05-12 12:52:39,438 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 12:52:39,439 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 12:52:39,442 INFO L507 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-05-12 12:52:39,442 INFO L508 ceAbstractionStarter]: WitnessConsidered=1 [2024-05-12 12:52:39,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 12:52:39 BasicIcfg [2024-05-12 12:52:39,442 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 12:52:39,443 INFO L158 Benchmark]: Toolchain (without parser) took 2858.50ms. Allocated memory was 142.6MB in the beginning and 199.2MB in the end (delta: 56.6MB). Free memory was 85.4MB in the beginning and 124.2MB in the end (delta: -38.8MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2024-05-12 12:52:39,443 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 102.8MB. Free memory was 79.7MB in the beginning and 79.7MB in the end (delta: 21.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:52:39,444 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 142.6MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:52:39,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.83ms. Allocated memory is still 142.6MB. Free memory was 85.4MB in the beginning and 58.9MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-05-12 12:52:39,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.06ms. Allocated memory is still 142.6MB. Free memory was 58.9MB in the beginning and 56.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:52:39,445 INFO L158 Benchmark]: Boogie Preprocessor took 67.86ms. Allocated memory is still 142.6MB. Free memory was 56.8MB in the beginning and 54.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:52:39,445 INFO L158 Benchmark]: RCFGBuilder took 426.97ms. Allocated memory is still 142.6MB. Free memory was 54.7MB in the beginning and 87.3MB in the end (delta: -32.5MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2024-05-12 12:52:39,445 INFO L158 Benchmark]: TraceAbstraction took 1934.43ms. Allocated memory was 142.6MB in the beginning and 199.2MB in the end (delta: 56.6MB). Free memory was 86.4MB in the beginning and 124.2MB in the end (delta: -37.8MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2024-05-12 12:52:39,447 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 0.14ms. Allocated memory is still 102.8MB. Free memory was 79.7MB in the beginning and 79.7MB in the end (delta: 21.4kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 142.6MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 368.83ms. Allocated memory is still 142.6MB. Free memory was 85.4MB in the beginning and 58.9MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.06ms. Allocated memory is still 142.6MB. Free memory was 58.9MB in the beginning and 56.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.86ms. Allocated memory is still 142.6MB. Free memory was 56.8MB in the beginning and 54.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 426.97ms. Allocated memory is still 142.6MB. Free memory was 54.7MB in the beginning and 87.3MB in the end (delta: -32.5MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1934.43ms. Allocated memory was 142.6MB in the beginning and 199.2MB in the end (delta: 56.6MB). Free memory was 86.4MB in the beginning and 124.2MB in the end (delta: -37.8MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 49 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 145 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 125 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 362 IncrementalHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 6 mSDtfsCounter, 362 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=5, InterpolantAutomatonStates: 26, 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, 0.8s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 490 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-05-12 12:52:39,479 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