./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/13-privatized_68-pfscan_protected_loop_minimal_interval_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/13-privatized_68-pfscan_protected_loop_minimal_interval_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-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:06:12,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:06:12,566 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:06:12,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:06:12,573 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:06:12,591 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:06:12,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:06:12,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:06:12,594 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:06:12,597 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:06:12,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:06:12,598 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:06:12,598 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:06:12,599 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:06:12,599 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:06:12,599 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:06:12,599 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:06:12,600 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:06:12,600 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:06:12,600 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:06:12,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:06:12,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:06:12,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:06:12,602 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:06:12,602 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:06:12,602 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:06:12,602 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:06:12,602 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:06:12,603 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:06:12,603 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:06:12,604 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:06:12,604 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:06:12,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:06:12,604 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:06:12,604 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:06:12,605 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:06:12,605 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:06:12,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:06:12,605 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:06:12,605 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:06:12,605 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:06:12,606 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:06:12,606 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:06:12,606 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:06:12,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:06:12,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:06:12,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:06:12,888 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:06:12,889 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:06:12,889 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/13-privatized_68-pfscan_protected_loop_minimal_interval_true.yml/witness.yml [2024-06-28 01:06:12,964 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:06:12,965 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:06:12,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-06-28 01:06:14,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:06:14,386 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:06:14,387 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-06-28 01:06:14,402 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6797a3af/ae62a00991d24883bcc24c90ebbed9f8/FLAGdc88b9917 [2024-06-28 01:06:14,414 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6797a3af/ae62a00991d24883bcc24c90ebbed9f8 [2024-06-28 01:06:14,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:06:14,416 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:06:14,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:06:14,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:06:14,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:06:14,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:06:12" (1/2) ... [2024-06-28 01:06:14,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e6634c4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:14, skipping insertion in model container [2024-06-28 01:06:14,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:06:12" (1/2) ... [2024-06-28 01:06:14,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@68f36904 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:06:14, skipping insertion in model container [2024-06-28 01:06:14,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:06:14" (2/2) ... [2024-06-28 01:06:14,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e6634c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:14, skipping insertion in model container [2024-06-28 01:06:14,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:06:14" (2/2) ... [2024-06-28 01:06:14,427 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:06:14,449 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:06:14,450 INFO L97 edCorrectnessWitness]: Location invariant before [L749-L751] (! multithreaded || (0 <= pqb.occupied && pqb.occupied <= 1000)) && (! multithreaded || (pqb_mtx_locked || (0 <= pqb.occupied && pqb.occupied <= 1000))) [2024-06-28 01:06:14,450 INFO L103 edCorrectnessWitness]: ghost_variable pqb_mtx_locked = 0 [2024-06-28 01:06:14,450 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:06:14,450 INFO L106 edCorrectnessWitness]: ghost_update [L748-L748] multithreaded = 1; [2024-06-28 01:06:14,450 INFO L106 edCorrectnessWitness]: ghost_update [L716-L716] pqb_mtx_locked = 0; [2024-06-28 01:06:14,451 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] pqb_mtx_locked = 1; [2024-06-28 01:06:14,451 INFO L106 edCorrectnessWitness]: ghost_update [L722-L722] pqb_mtx_locked = 1; [2024-06-28 01:06:14,451 INFO L106 edCorrectnessWitness]: ghost_update [L730-L730] pqb_mtx_locked = 0; [2024-06-28 01:06:14,492 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:06:14,649 WARN L247 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_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2024-06-28 01:06:14,793 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:06:14,805 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local [2024-06-28 01:06:14,840 WARN L247 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_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:06:14,893 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:06:14,954 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:06:14,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:14 WrapperNode [2024-06-28 01:06:14,955 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:06:14,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:06:14,956 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:06:14,956 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:06:14,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:14" (1/1) ... [2024-06-28 01:06:15,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:14" (1/1) ... [2024-06-28 01:06:15,076 INFO L138 Inliner]: procedures = 165, calls = 158, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 605 [2024-06-28 01:06:15,076 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:06:15,077 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:06:15,077 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:06:15,077 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:06:15,091 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:14" (1/1) ... [2024-06-28 01:06:15,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:14" (1/1) ... [2024-06-28 01:06:15,104 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:14" (1/1) ... [2024-06-28 01:06:15,131 INFO L175 MemorySlicer]: Split 142 memory accesses to 2 slices as follows [2, 140]. 99 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 3 writes are split as follows [0, 3]. [2024-06-28 01:06:15,131 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:14" (1/1) ... [2024-06-28 01:06:15,131 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:14" (1/1) ... [2024-06-28 01:06:15,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:14" (1/1) ... [2024-06-28 01:06:15,145 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:14" (1/1) ... [2024-06-28 01:06:15,146 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:14" (1/1) ... [2024-06-28 01:06:15,148 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:14" (1/1) ... [2024-06-28 01:06:15,151 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:06:15,151 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:06:15,152 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:06:15,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:06:15,165 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:14" (1/1) ... [2024-06-28 01:06:15,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:06:15,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:06:15,187 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) [2024-06-28 01:06:15,194 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 [2024-06-28 01:06:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:06:15,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:06:15,216 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-06-28 01:06:15,216 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-06-28 01:06:15,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:06:15,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:06:15,217 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-28 01:06:15,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:06:15,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:06:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:06:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-28 01:06:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:06:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:06:15,220 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:06:15,354 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:06:15,355 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:06:15,827 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:06:15,827 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:06:17,072 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:06:17,073 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-06-28 01:06:17,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:06:17 BoogieIcfgContainer [2024-06-28 01:06:17,073 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:06:17,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:06:17,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:06:17,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:06:17,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:06:12" (1/4) ... [2024-06-28 01:06:17,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa640c8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:06:17, skipping insertion in model container [2024-06-28 01:06:17,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:06:14" (2/4) ... [2024-06-28 01:06:17,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa640c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:06:17, skipping insertion in model container [2024-06-28 01:06:17,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:06:14" (3/4) ... [2024-06-28 01:06:17,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa640c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:06:17, skipping insertion in model container [2024-06-28 01:06:17,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:06:17" (4/4) ... [2024-06-28 01:06:17,079 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-06-28 01:06:17,093 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:06:17,093 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 01:06:17,093 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:06:17,121 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:06:17,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 41 transitions, 86 flow [2024-06-28 01:06:17,179 INFO L124 PetriNetUnfolderBase]: 7/40 cut-off events. [2024-06-28 01:06:17,179 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:06:17,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 40 events. 7/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 60 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-06-28 01:06:17,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 41 transitions, 86 flow [2024-06-28 01:06:17,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 40 transitions, 83 flow [2024-06-28 01:06:17,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:06:17,204 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;@29d70955, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:06:17,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 01:06:17,211 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:06:17,211 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:06:17,212 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:06:17,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:17,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:06:17,214 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:06:17,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1272954676, now seen corresponding path program 1 times [2024-06-28 01:06:17,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:17,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35446414] [2024-06-28 01:06:17,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:17,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:17,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:17,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:17,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35446414] [2024-06-28 01:06:17,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35446414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:17,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:17,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:06:17,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930626864] [2024-06-28 01:06:17,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:17,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:06:17,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:17,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:06:17,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:06:17,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-06-28 01:06:17,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:17,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:17,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-06-28 01:06:17,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:18,119 INFO L124 PetriNetUnfolderBase]: 234/510 cut-off events. [2024-06-28 01:06:18,120 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-28 01:06:18,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 510 events. 234/510 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2324 event pairs, 58 based on Foata normal form. 55/457 useless extension candidates. Maximal degree in co-relation 920. Up to 298 conditions per place. [2024-06-28 01:06:18,127 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 37 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-06-28 01:06:18,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 53 transitions, 189 flow [2024-06-28 01:06:18,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:06:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:06:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-06-28 01:06:18,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7398373983739838 [2024-06-28 01:06:18,138 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 83 flow. Second operand 3 states and 91 transitions. [2024-06-28 01:06:18,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 53 transitions, 189 flow [2024-06-28 01:06:18,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:06:18,144 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 93 flow [2024-06-28 01:06:18,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2024-06-28 01:06:18,148 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-06-28 01:06:18,148 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 93 flow [2024-06-28 01:06:18,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:18,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:18,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:18,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:06:18,149 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:06:18,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:18,150 INFO L85 PathProgramCache]: Analyzing trace with hash 956694757, now seen corresponding path program 1 times [2024-06-28 01:06:18,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:18,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690144548] [2024-06-28 01:06:18,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:18,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:18,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:18,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690144548] [2024-06-28 01:06:18,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690144548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:18,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:18,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:06:18,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108036521] [2024-06-28 01:06:18,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:18,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:06:18,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:18,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:06:18,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:06:18,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 01:06:18,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:18,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:18,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 01:06:18,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:18,567 INFO L124 PetriNetUnfolderBase]: 300/607 cut-off events. [2024-06-28 01:06:18,567 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-28 01:06:18,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 607 events. 300/607 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2694 event pairs, 30 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 1227. Up to 339 conditions per place. [2024-06-28 01:06:18,570 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 54 selfloop transitions, 15 changer transitions 0/78 dead transitions. [2024-06-28 01:06:18,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 78 transitions, 321 flow [2024-06-28 01:06:18,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:06:18,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:06:18,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-28 01:06:18,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532520325203252 [2024-06-28 01:06:18,572 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 93 flow. Second operand 6 states and 131 transitions. [2024-06-28 01:06:18,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 78 transitions, 321 flow [2024-06-28 01:06:18,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 78 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:06:18,574 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 184 flow [2024-06-28 01:06:18,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2024-06-28 01:06:18,575 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-06-28 01:06:18,575 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 184 flow [2024-06-28 01:06:18,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:18,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:18,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:18,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:06:18,576 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:06:18,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:18,577 INFO L85 PathProgramCache]: Analyzing trace with hash -407263093, now seen corresponding path program 1 times [2024-06-28 01:06:18,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:18,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40062236] [2024-06-28 01:06:18,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:18,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:18,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:18,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:18,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40062236] [2024-06-28 01:06:18,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40062236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:18,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:18,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:06:18,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065672203] [2024-06-28 01:06:18,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:18,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:06:18,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:18,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:06:18,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:06:18,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 01:06:18,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2024-06-28 01:06:18,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:18,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 01:06:18,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:18,881 INFO L124 PetriNetUnfolderBase]: 360/715 cut-off events. [2024-06-28 01:06:18,882 INFO L125 PetriNetUnfolderBase]: For 286/288 co-relation queries the response was YES. [2024-06-28 01:06:18,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1796 conditions, 715 events. 360/715 cut-off events. For 286/288 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3305 event pairs, 78 based on Foata normal form. 24/682 useless extension candidates. Maximal degree in co-relation 1778. Up to 371 conditions per place. [2024-06-28 01:06:18,885 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 66 selfloop transitions, 24 changer transitions 0/98 dead transitions. [2024-06-28 01:06:18,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 98 transitions, 530 flow [2024-06-28 01:06:18,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:06:18,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:06:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-28 01:06:18,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5284552845528455 [2024-06-28 01:06:18,887 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 184 flow. Second operand 6 states and 130 transitions. [2024-06-28 01:06:18,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 98 transitions, 530 flow [2024-06-28 01:06:18,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 98 transitions, 520 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:06:18,891 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 371 flow [2024-06-28 01:06:18,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=371, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2024-06-28 01:06:18,892 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 19 predicate places. [2024-06-28 01:06:18,892 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 371 flow [2024-06-28 01:06:18,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2024-06-28 01:06:18,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:18,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:18,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:06:18,893 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:06:18,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:18,893 INFO L85 PathProgramCache]: Analyzing trace with hash 535566444, now seen corresponding path program 1 times [2024-06-28 01:06:18,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:18,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746509817] [2024-06-28 01:06:18,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:18,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:19,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:19,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746509817] [2024-06-28 01:06:19,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746509817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:19,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:19,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:06:19,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056559603] [2024-06-28 01:06:19,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:19,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:06:19,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:19,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:06:19,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:06:19,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-28 01:06:19,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 371 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-06-28 01:06:19,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:19,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-28 01:06:19,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:19,240 INFO L124 PetriNetUnfolderBase]: 196/419 cut-off events. [2024-06-28 01:06:19,240 INFO L125 PetriNetUnfolderBase]: For 521/533 co-relation queries the response was YES. [2024-06-28 01:06:19,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 419 events. 196/419 cut-off events. For 521/533 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1634 event pairs, 67 based on Foata normal form. 12/402 useless extension candidates. Maximal degree in co-relation 1295. Up to 296 conditions per place. [2024-06-28 01:06:19,242 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 50 selfloop transitions, 9 changer transitions 3/76 dead transitions. [2024-06-28 01:06:19,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 76 transitions, 477 flow [2024-06-28 01:06:19,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:06:19,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:06:19,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-28 01:06:19,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532520325203252 [2024-06-28 01:06:19,244 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 371 flow. Second operand 6 states and 131 transitions. [2024-06-28 01:06:19,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 76 transitions, 477 flow [2024-06-28 01:06:19,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 465 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 01:06:19,248 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 333 flow [2024-06-28 01:06:19,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=333, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-06-28 01:06:19,248 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 26 predicate places. [2024-06-28 01:06:19,249 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 333 flow [2024-06-28 01:06:19,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-06-28 01:06:19,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:19,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:19,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:06:19,249 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:06:19,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:19,250 INFO L85 PathProgramCache]: Analyzing trace with hash -900726347, now seen corresponding path program 1 times [2024-06-28 01:06:19,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:19,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522757434] [2024-06-28 01:06:19,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:19,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:19,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:19,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522757434] [2024-06-28 01:06:19,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522757434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:19,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:19,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:06:19,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246698862] [2024-06-28 01:06:19,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:19,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:06:19,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:19,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:06:19,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:06:19,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-28 01:06:19,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 333 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2024-06-28 01:06:19,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:19,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-28 01:06:19,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:19,560 INFO L124 PetriNetUnfolderBase]: 224/474 cut-off events. [2024-06-28 01:06:19,560 INFO L125 PetriNetUnfolderBase]: For 844/863 co-relation queries the response was YES. [2024-06-28 01:06:19,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1599 conditions, 474 events. 224/474 cut-off events. For 844/863 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1874 event pairs, 26 based on Foata normal form. 9/455 useless extension candidates. Maximal degree in co-relation 1571. Up to 174 conditions per place. [2024-06-28 01:06:19,564 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 84 selfloop transitions, 10 changer transitions 0/109 dead transitions. [2024-06-28 01:06:19,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 109 transitions, 867 flow [2024-06-28 01:06:19,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:06:19,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:06:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-28 01:06:19,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5284552845528455 [2024-06-28 01:06:19,569 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 333 flow. Second operand 6 states and 130 transitions. [2024-06-28 01:06:19,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 109 transitions, 867 flow [2024-06-28 01:06:19,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 842 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 01:06:19,578 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 382 flow [2024-06-28 01:06:19,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2024-06-28 01:06:19,579 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 31 predicate places. [2024-06-28 01:06:19,580 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 382 flow [2024-06-28 01:06:19,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2024-06-28 01:06:19,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:19,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:19,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:06:19,580 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:06:19,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:19,581 INFO L85 PathProgramCache]: Analyzing trace with hash -82516203, now seen corresponding path program 2 times [2024-06-28 01:06:19,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:19,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796952438] [2024-06-28 01:06:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:19,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:19,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:19,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796952438] [2024-06-28 01:06:19,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796952438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:19,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:19,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:06:19,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139758226] [2024-06-28 01:06:19,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:19,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:06:19,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:19,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:06:19,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:06:19,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-28 01:06:19,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 382 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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) [2024-06-28 01:06:19,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:19,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-28 01:06:19,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:19,944 INFO L124 PetriNetUnfolderBase]: 298/642 cut-off events. [2024-06-28 01:06:19,944 INFO L125 PetriNetUnfolderBase]: For 1117/1140 co-relation queries the response was YES. [2024-06-28 01:06:19,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2416 conditions, 642 events. 298/642 cut-off events. For 1117/1140 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2993 event pairs, 13 based on Foata normal form. 19/659 useless extension candidates. Maximal degree in co-relation 2386. Up to 332 conditions per place. [2024-06-28 01:06:19,948 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 77 selfloop transitions, 17 changer transitions 4/113 dead transitions. [2024-06-28 01:06:19,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 113 transitions, 871 flow [2024-06-28 01:06:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:06:19,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:06:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 01:06:19,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528455284552846 [2024-06-28 01:06:19,950 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 382 flow. Second operand 6 states and 136 transitions. [2024-06-28 01:06:19,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 113 transitions, 871 flow [2024-06-28 01:06:19,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 113 transitions, 863 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:06:19,955 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 477 flow [2024-06-28 01:06:19,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=477, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2024-06-28 01:06:19,956 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 36 predicate places. [2024-06-28 01:06:19,956 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 477 flow [2024-06-28 01:06:19,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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) [2024-06-28 01:06:19,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:19,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:19,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:06:19,957 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:06:19,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:19,957 INFO L85 PathProgramCache]: Analyzing trace with hash 260295767, now seen corresponding path program 3 times [2024-06-28 01:06:19,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:19,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727708735] [2024-06-28 01:06:19,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:19,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:20,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:20,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:20,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727708735] [2024-06-28 01:06:20,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727708735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:20,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:20,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:06:20,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151232148] [2024-06-28 01:06:20,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:20,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:06:20,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:20,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:06:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:06:20,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-28 01:06:20,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 477 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2024-06-28 01:06:20,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:20,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-28 01:06:20,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:20,237 INFO L124 PetriNetUnfolderBase]: 347/792 cut-off events. [2024-06-28 01:06:20,238 INFO L125 PetriNetUnfolderBase]: For 1767/1794 co-relation queries the response was YES. [2024-06-28 01:06:20,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3178 conditions, 792 events. 347/792 cut-off events. For 1767/1794 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3921 event pairs, 70 based on Foata normal form. 22/808 useless extension candidates. Maximal degree in co-relation 3146. Up to 331 conditions per place. [2024-06-28 01:06:20,242 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 105 selfloop transitions, 20 changer transitions 4/144 dead transitions. [2024-06-28 01:06:20,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 144 transitions, 1259 flow [2024-06-28 01:06:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:06:20,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:06:20,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 01:06:20,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813008130081301 [2024-06-28 01:06:20,243 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 477 flow. Second operand 6 states and 143 transitions. [2024-06-28 01:06:20,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 144 transitions, 1259 flow [2024-06-28 01:06:20,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 144 transitions, 1239 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 01:06:20,251 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 647 flow [2024-06-28 01:06:20,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=647, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-06-28 01:06:20,252 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 42 predicate places. [2024-06-28 01:06:20,252 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 647 flow [2024-06-28 01:06:20,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2024-06-28 01:06:20,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:20,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:20,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:06:20,253 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:06:20,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:20,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1667413737, now seen corresponding path program 4 times [2024-06-28 01:06:20,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:20,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164183030] [2024-06-28 01:06:20,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:20,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:20,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:20,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164183030] [2024-06-28 01:06:20,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164183030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:20,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:20,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:06:20,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959566564] [2024-06-28 01:06:20,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:20,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:06:20,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:20,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:06:20,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:06:20,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-28 01:06:20,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 647 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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) [2024-06-28 01:06:20,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:20,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-28 01:06:20,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:20,468 INFO L124 PetriNetUnfolderBase]: 109/306 cut-off events. [2024-06-28 01:06:20,469 INFO L125 PetriNetUnfolderBase]: For 1216/1224 co-relation queries the response was YES. [2024-06-28 01:06:20,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1426 conditions, 306 events. 109/306 cut-off events. For 1216/1224 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1264 event pairs, 9 based on Foata normal form. 14/317 useless extension candidates. Maximal degree in co-relation 1402. Up to 131 conditions per place. [2024-06-28 01:06:20,472 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 54 selfloop transitions, 26 changer transitions 8/98 dead transitions. [2024-06-28 01:06:20,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 98 transitions, 944 flow [2024-06-28 01:06:20,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:06:20,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:06:20,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 01:06:20,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556910569105691 [2024-06-28 01:06:20,473 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 647 flow. Second operand 6 states and 137 transitions. [2024-06-28 01:06:20,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 98 transitions, 944 flow [2024-06-28 01:06:20,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 98 transitions, 780 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-28 01:06:20,477 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 542 flow [2024-06-28 01:06:20,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=542, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2024-06-28 01:06:20,479 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 35 predicate places. [2024-06-28 01:06:20,479 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 542 flow [2024-06-28 01:06:20,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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) [2024-06-28 01:06:20,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:20,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:20,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:06:20,480 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:06:20,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:20,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1971549301, now seen corresponding path program 1 times [2024-06-28 01:06:20,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:20,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97478445] [2024-06-28 01:06:20,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:20,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:20,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:20,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:20,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97478445] [2024-06-28 01:06:20,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97478445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:20,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:20,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:06:20,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418285052] [2024-06-28 01:06:20,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:20,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:06:20,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:20,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:06:20,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:06:20,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-28 01:06:20,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 542 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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) [2024-06-28 01:06:20,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:20,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-28 01:06:20,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:20,809 INFO L124 PetriNetUnfolderBase]: 149/394 cut-off events. [2024-06-28 01:06:20,809 INFO L125 PetriNetUnfolderBase]: For 1483/1497 co-relation queries the response was YES. [2024-06-28 01:06:20,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1767 conditions, 394 events. 149/394 cut-off events. For 1483/1497 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1771 event pairs, 25 based on Foata normal form. 10/404 useless extension candidates. Maximal degree in co-relation 1744. Up to 223 conditions per place. [2024-06-28 01:06:20,812 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 85 selfloop transitions, 24 changer transitions 6/125 dead transitions. [2024-06-28 01:06:20,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 125 transitions, 1229 flow [2024-06-28 01:06:20,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:06:20,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:06:20,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-06-28 01:06:20,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067750677506775 [2024-06-28 01:06:20,814 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 542 flow. Second operand 9 states and 187 transitions. [2024-06-28 01:06:20,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 125 transitions, 1229 flow [2024-06-28 01:06:20,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 125 transitions, 1096 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-28 01:06:20,821 INFO L231 Difference]: Finished difference. Result has 75 places, 87 transitions, 712 flow [2024-06-28 01:06:20,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=712, PETRI_PLACES=75, PETRI_TRANSITIONS=87} [2024-06-28 01:06:20,822 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 38 predicate places. [2024-06-28 01:06:20,822 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 87 transitions, 712 flow [2024-06-28 01:06:20,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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) [2024-06-28 01:06:20,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:20,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:20,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:06:20,825 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:06:20,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:20,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1118451021, now seen corresponding path program 2 times [2024-06-28 01:06:20,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:20,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997079725] [2024-06-28 01:06:20,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:20,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:20,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:20,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997079725] [2024-06-28 01:06:20,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997079725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:20,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:20,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:06:20,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826540093] [2024-06-28 01:06:20,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:20,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:06:20,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:20,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:06:20,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:06:20,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-28 01:06:20,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 87 transitions, 712 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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) [2024-06-28 01:06:20,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:20,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-28 01:06:20,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:21,195 INFO L124 PetriNetUnfolderBase]: 194/513 cut-off events. [2024-06-28 01:06:21,196 INFO L125 PetriNetUnfolderBase]: For 2220/2242 co-relation queries the response was YES. [2024-06-28 01:06:21,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2276 conditions, 513 events. 194/513 cut-off events. For 2220/2242 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2532 event pairs, 35 based on Foata normal form. 12/524 useless extension candidates. Maximal degree in co-relation 2252. Up to 321 conditions per place. [2024-06-28 01:06:21,199 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 100 selfloop transitions, 24 changer transitions 4/138 dead transitions. [2024-06-28 01:06:21,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 138 transitions, 1364 flow [2024-06-28 01:06:21,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:06:21,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:06:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 01:06:21,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4959349593495935 [2024-06-28 01:06:21,201 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 712 flow. Second operand 9 states and 183 transitions. [2024-06-28 01:06:21,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 138 transitions, 1364 flow [2024-06-28 01:06:21,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 138 transitions, 1339 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:06:21,209 INFO L231 Difference]: Finished difference. Result has 85 places, 104 transitions, 929 flow [2024-06-28 01:06:21,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=929, PETRI_PLACES=85, PETRI_TRANSITIONS=104} [2024-06-28 01:06:21,211 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 48 predicate places. [2024-06-28 01:06:21,211 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 104 transitions, 929 flow [2024-06-28 01:06:21,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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) [2024-06-28 01:06:21,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:21,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:21,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:06:21,211 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:06:21,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:21,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1512907025, now seen corresponding path program 3 times [2024-06-28 01:06:21,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:21,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767312467] [2024-06-28 01:06:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:21,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:21,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:21,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:21,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767312467] [2024-06-28 01:06:21,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767312467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:21,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:21,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:06:21,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330445948] [2024-06-28 01:06:21,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:21,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:06:21,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:21,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:06:21,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:06:21,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-28 01:06:21,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 104 transitions, 929 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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) [2024-06-28 01:06:21,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:21,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-28 01:06:21,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:21,594 INFO L124 PetriNetUnfolderBase]: 253/672 cut-off events. [2024-06-28 01:06:21,594 INFO L125 PetriNetUnfolderBase]: For 3103/3125 co-relation queries the response was YES. [2024-06-28 01:06:21,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3119 conditions, 672 events. 253/672 cut-off events. For 3103/3125 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3131 event pairs, 25 based on Foata normal form. 22/693 useless extension candidates. Maximal degree in co-relation 3090. Up to 205 conditions per place. [2024-06-28 01:06:21,599 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 129 selfloop transitions, 52 changer transitions 4/195 dead transitions. [2024-06-28 01:06:21,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 195 transitions, 2053 flow [2024-06-28 01:06:21,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:06:21,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:06:21,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2024-06-28 01:06:21,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526829268292683 [2024-06-28 01:06:21,600 INFO L175 Difference]: Start difference. First operand has 85 places, 104 transitions, 929 flow. Second operand 10 states and 216 transitions. [2024-06-28 01:06:21,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 195 transitions, 2053 flow [2024-06-28 01:06:21,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 195 transitions, 2023 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-06-28 01:06:21,610 INFO L231 Difference]: Finished difference. Result has 100 places, 140 transitions, 1532 flow [2024-06-28 01:06:21,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1532, PETRI_PLACES=100, PETRI_TRANSITIONS=140} [2024-06-28 01:06:21,610 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 63 predicate places. [2024-06-28 01:06:21,611 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 140 transitions, 1532 flow [2024-06-28 01:06:21,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 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) [2024-06-28 01:06:21,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:21,611 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:21,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:06:21,611 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:06:21,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:21,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1974167093, now seen corresponding path program 1 times [2024-06-28 01:06:21,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:21,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966407701] [2024-06-28 01:06:21,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:21,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:21,850 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-28 01:06:21,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:21,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966407701] [2024-06-28 01:06:21,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966407701] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 01:06:21,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355528807] [2024-06-28 01:06:21,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:21,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 01:06:21,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:06:21,852 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-28 01:06:21,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-28 01:06:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:21,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 30 conjunts are in the unsatisfiable core [2024-06-28 01:06:21,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 01:06:22,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-06-28 01:06:22,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:22,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 01:06:22,417 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-06-28 01:06:22,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 55 [2024-06-28 01:06:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:22,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355528807] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 01:06:22,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 01:06:22,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2024-06-28 01:06:22,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762429064] [2024-06-28 01:06:22,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 01:06:22,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-06-28 01:06:22,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:22,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-06-28 01:06:22,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-06-28 01:06:22,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 01:06:22,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 140 transitions, 1532 flow. Second operand has 23 states, 23 states have (on average 11.956521739130435) internal successors, (275), 23 states have internal predecessors, (275), 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) [2024-06-28 01:06:22,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:22,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 01:06:22,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:23,098 INFO L124 PetriNetUnfolderBase]: 387/970 cut-off events. [2024-06-28 01:06:23,098 INFO L125 PetriNetUnfolderBase]: For 6703/6725 co-relation queries the response was YES. [2024-06-28 01:06:23,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5227 conditions, 970 events. 387/970 cut-off events. For 6703/6725 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4949 event pairs, 18 based on Foata normal form. 35/1005 useless extension candidates. Maximal degree in co-relation 5191. Up to 242 conditions per place. [2024-06-28 01:06:23,103 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 0 selfloop transitions, 0 changer transitions 307/307 dead transitions. [2024-06-28 01:06:23,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 307 transitions, 3943 flow [2024-06-28 01:06:23,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-06-28 01:06:23,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-06-28 01:06:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 328 transitions. [2024-06-28 01:06:23,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 01:06:23,105 INFO L175 Difference]: Start difference. First operand has 100 places, 140 transitions, 1532 flow. Second operand 22 states and 328 transitions. [2024-06-28 01:06:23,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 307 transitions, 3943 flow [2024-06-28 01:06:23,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 307 transitions, 3675 flow, removed 121 selfloop flow, removed 4 redundant places. [2024-06-28 01:06:23,126 INFO L231 Difference]: Finished difference. Result has 115 places, 0 transitions, 0 flow [2024-06-28 01:06:23,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=0, PETRI_PLACES=115, PETRI_TRANSITIONS=0} [2024-06-28 01:06:23,127 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 78 predicate places. [2024-06-28 01:06:23,128 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 0 transitions, 0 flow [2024-06-28 01:06:23,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.956521739130435) internal successors, (275), 23 states have internal predecessors, (275), 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) [2024-06-28 01:06:23,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-28 01:06:23,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2024-06-28 01:06:23,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-06-28 01:06:23,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-06-28 01:06:23,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-06-28 01:06:23,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-06-28 01:06:23,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-28 01:06:23,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-06-28 01:06:23,345 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1] [2024-06-28 01:06:23,349 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 01:06:23,349 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 01:06:23,353 INFO L507 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-06-28 01:06:23,353 INFO L508 ceAbstractionStarter]: WitnessConsidered=1 [2024-06-28 01:06:23,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 01:06:23 BasicIcfg [2024-06-28 01:06:23,355 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 01:06:23,355 INFO L158 Benchmark]: Toolchain (without parser) took 8939.59ms. Allocated memory was 165.7MB in the beginning and 721.4MB in the end (delta: 555.7MB). Free memory was 108.8MB in the beginning and 503.9MB in the end (delta: -395.1MB). Peak memory consumption was 159.0MB. Max. memory is 16.1GB. [2024-06-28 01:06:23,356 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 96.5MB. Free memory was 57.8MB in the beginning and 57.7MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:06:23,356 INFO L158 Benchmark]: CDTParser took 1.52ms. Allocated memory is still 96.5MB. Free memory is still 54.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:06:23,357 INFO L158 Benchmark]: CACSL2BoogieTranslator took 536.62ms. Allocated memory is still 165.7MB. Free memory was 108.3MB in the beginning and 133.7MB in the end (delta: -25.3MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2024-06-28 01:06:23,357 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.99ms. Allocated memory is still 165.7MB. Free memory was 133.7MB in the beginning and 131.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 01:06:23,358 INFO L158 Benchmark]: Boogie Preprocessor took 74.02ms. Allocated memory is still 165.7MB. Free memory was 131.8MB in the beginning and 127.0MB in the end (delta: 4.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-28 01:06:23,358 INFO L158 Benchmark]: RCFGBuilder took 1921.59ms. Allocated memory was 165.7MB in the beginning and 360.7MB in the end (delta: 195.0MB). Free memory was 127.0MB in the beginning and 239.4MB in the end (delta: -112.4MB). Peak memory consumption was 220.7MB. Max. memory is 16.1GB. [2024-06-28 01:06:23,358 INFO L158 Benchmark]: TraceAbstraction took 6280.67ms. Allocated memory was 360.7MB in the beginning and 721.4MB in the end (delta: 360.7MB). Free memory was 239.4MB in the beginning and 503.9MB in the end (delta: -264.6MB). Peak memory consumption was 96.1MB. Max. memory is 16.1GB. [2024-06-28 01:06:23,360 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 96.5MB. Free memory was 57.8MB in the beginning and 57.7MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 1.52ms. Allocated memory is still 96.5MB. Free memory is still 54.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 536.62ms. Allocated memory is still 165.7MB. Free memory was 108.3MB in the beginning and 133.7MB in the end (delta: -25.3MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.99ms. Allocated memory is still 165.7MB. Free memory was 133.7MB in the beginning and 131.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.02ms. Allocated memory is still 165.7MB. Free memory was 131.8MB in the beginning and 127.0MB in the end (delta: 4.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1921.59ms. Allocated memory was 165.7MB in the beginning and 360.7MB in the end (delta: 195.0MB). Free memory was 127.0MB in the beginning and 239.4MB in the end (delta: -112.4MB). Peak memory consumption was 220.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6280.67ms. Allocated memory was 360.7MB in the beginning and 721.4MB in the end (delta: 360.7MB). Free memory was 239.4MB in the beginning and 503.9MB in the end (delta: -264.6MB). Peak memory consumption was 96.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 749]: 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 - 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, 58 locations, 6 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: 6.2s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 864 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 846 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2127 IncrementalHoareTripleChecker+Invalid, 2192 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 13 mSDtfsCounter, 2127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1532occurred in iteration=11, InterpolantAutomatonStates: 95, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 225 NumberOfCodeBlocks, 225 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 241 ConstructedInterpolants, 5 QuantifiedInterpolants, 1928 SizeOfPredicates, 14 NumberOfNonLiveVariables, 207 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 3/15 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 01:06:23,392 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