./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/protection/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/protection/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 [2024-06-27 18:01:44,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:01:44,659 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:01:44,662 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:01:44,663 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:01:44,677 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:01:44,678 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:01:44,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:01:44,679 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:01:44,679 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:01:44,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:01:44,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:01:44,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:01:44,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:01:44,680 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:01:44,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:01:44,681 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:01:44,681 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:01:44,681 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:01:44,681 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:01:44,682 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:01:44,682 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:01:44,682 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:01:44,683 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:01:44,683 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:01:44,683 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:01:44,683 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:01:44,683 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:01:44,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:01:44,696 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:01:44,697 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:01:44,698 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:01:44,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:01:44,698 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:01:44,698 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:01:44,699 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:01:44,699 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:01:44,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:01:44,699 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:01:44,699 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:01:44,700 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:01:44,700 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:01:44,700 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:01:44,700 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:01:44,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:01:44,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:01:44,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:01:44,974 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:01:44,974 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:01:44,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/13-privatized_68-pfscan_protected_loop_minimal_interval_true.yml/witness.yml [2024-06-27 18:01:45,090 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:01:45,090 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:01:45,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-06-27 18:01:46,266 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:01:46,504 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:01:46,505 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-06-27 18:01:46,521 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c645c444/e11470751f83467ca934c5a88b245eb3/FLAGfade05243 [2024-06-27 18:01:46,541 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c645c444/e11470751f83467ca934c5a88b245eb3 [2024-06-27 18:01:46,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:01:46,543 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:01:46,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:01:46,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:01:46,549 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:01:46,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:01:45" (1/2) ... [2024-06-27 18:01:46,553 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b59c28 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:46, skipping insertion in model container [2024-06-27 18:01:46,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:01:45" (1/2) ... [2024-06-27 18:01:46,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@8ddb62b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:01:46, skipping insertion in model container [2024-06-27 18:01:46,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:01:46" (2/2) ... [2024-06-27 18:01:46,556 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b59c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:46, skipping insertion in model container [2024-06-27 18:01:46,556 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:01:46" (2/2) ... [2024-06-27 18:01:46,556 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:01:46,587 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:01:46,588 INFO L97 edCorrectnessWitness]: Location invariant before [L749-L751] ! multithreaded || (0 <= pqb.occupied && pqb.occupied <= 1000) [2024-06-27 18:01:46,588 INFO L103 edCorrectnessWitness]: ghost_variable pqb_mtx_locked = 0 [2024-06-27 18:01:46,588 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:01:46,589 INFO L106 edCorrectnessWitness]: ghost_update [L730-L730] pqb_mtx_locked = 0; [2024-06-27 18:01:46,589 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] pqb_mtx_locked = 1; [2024-06-27 18:01:46,589 INFO L106 edCorrectnessWitness]: ghost_update [L716-L716] pqb_mtx_locked = 0; [2024-06-27 18:01:46,589 INFO L106 edCorrectnessWitness]: ghost_update [L722-L722] pqb_mtx_locked = 1; [2024-06-27 18:01:46,589 INFO L106 edCorrectnessWitness]: ghost_update [L748-L748] multithreaded = 1; [2024-06-27 18:01:46,635 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:01:46,804 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] [2024-06-27 18:01:46,962 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:01:46,975 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local [2024-06-27 18:01:47,009 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 [2024-06-27 18:01:47,092 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:01:47,126 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:01:47,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:47 WrapperNode [2024-06-27 18:01:47,128 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:01:47,128 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:01:47,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:01:47,129 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:01:47,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:47" (1/1) ... [2024-06-27 18:01:47,161 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:47" (1/1) ... [2024-06-27 18:01:47,192 INFO L138 Inliner]: procedures = 165, calls = 96, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 367 [2024-06-27 18:01:47,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:01:47,199 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:01:47,199 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:01:47,199 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:01:47,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:47" (1/1) ... [2024-06-27 18:01:47,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:47" (1/1) ... [2024-06-27 18:01:47,223 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:47" (1/1) ... [2024-06-27 18:01:47,238 INFO L175 MemorySlicer]: Split 80 memory accesses to 2 slices as follows [2, 78]. 98 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]. [2024-06-27 18:01:47,238 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:47" (1/1) ... [2024-06-27 18:01:47,238 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:47" (1/1) ... [2024-06-27 18:01:47,247 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:47" (1/1) ... [2024-06-27 18:01:47,250 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:47" (1/1) ... [2024-06-27 18:01:47,252 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:47" (1/1) ... [2024-06-27 18:01:47,253 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:47" (1/1) ... [2024-06-27 18:01:47,256 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:01:47,265 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:01:47,265 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:01:47,265 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:01:47,266 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:47" (1/1) ... [2024-06-27 18:01:47,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:01:47,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:01:47,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:01:47,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:01:47,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 18:01:47,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 18:01:47,333 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-06-27 18:01:47,334 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-06-27 18:01:47,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 18:01:47,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 18:01:47,334 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-27 18:01:47,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:01:47,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:01:47,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 18:01:47,334 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-27 18:01:47,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:01:47,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:01:47,336 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:01:47,452 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:01:47,455 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:01:47,852 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:01:47,852 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:01:48,512 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:01:48,512 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-06-27 18:01:48,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:01:48 BoogieIcfgContainer [2024-06-27 18:01:48,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:01:48,517 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:01:48,518 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:01:48,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:01:48,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:01:45" (1/4) ... [2024-06-27 18:01:48,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36346ddd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:01:48, skipping insertion in model container [2024-06-27 18:01:48,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:01:46" (2/4) ... [2024-06-27 18:01:48,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36346ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:01:48, skipping insertion in model container [2024-06-27 18:01:48,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:01:47" (3/4) ... [2024-06-27 18:01:48,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36346ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:01:48, skipping insertion in model container [2024-06-27 18:01:48,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:01:48" (4/4) ... [2024-06-27 18:01:48,529 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-06-27 18:01:48,549 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:01:48,550 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-27 18:01:48,550 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:01:48,584 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:01:48,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 41 transitions, 86 flow [2024-06-27 18:01:48,652 INFO L124 PetriNetUnfolderBase]: 7/40 cut-off events. [2024-06-27 18:01:48,653 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:01:48,658 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. [2024-06-27 18:01:48,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 41 transitions, 86 flow [2024-06-27 18:01:48,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 40 transitions, 83 flow [2024-06-27 18:01:48,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:01:48,686 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;@347ee79c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:01:48,687 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-27 18:01:48,694 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:01:48,694 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:01:48,694 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:01:48,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:48,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:01:48,697 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)] === [2024-06-27 18:01:48,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:48,702 INFO L85 PathProgramCache]: Analyzing trace with hash 817781975, now seen corresponding path program 1 times [2024-06-27 18:01:48,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:48,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555691201] [2024-06-27 18:01:48,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:48,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:49,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:49,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555691201] [2024-06-27 18:01:49,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555691201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:49,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:49,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:01:49,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614253372] [2024-06-27 18:01:49,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:49,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:01:49,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:49,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:01:49,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:01:49,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-06-27 18:01:49,284 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) [2024-06-27 18:01:49,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:49,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-06-27 18:01:49,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:49,461 INFO L124 PetriNetUnfolderBase]: 234/510 cut-off events. [2024-06-27 18:01:49,461 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-27 18:01:49,464 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 2340 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. [2024-06-27 18:01:49,468 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 37 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-06-27 18:01:49,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 53 transitions, 189 flow [2024-06-27 18:01:49,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:01:49,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:01:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-06-27 18:01:49,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7398373983739838 [2024-06-27 18:01:49,524 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 83 flow. Second operand 3 states and 91 transitions. [2024-06-27 18:01:49,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 53 transitions, 189 flow [2024-06-27 18:01:49,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:01:49,532 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 93 flow [2024-06-27 18:01:49,534 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} [2024-06-27 18:01:49,537 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-06-27 18:01:49,537 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 93 flow [2024-06-27 18:01:49,538 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) [2024-06-27 18:01:49,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:49,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:49,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:01:49,538 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-27 18:01:49,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:49,540 INFO L85 PathProgramCache]: Analyzing trace with hash 419202504, now seen corresponding path program 1 times [2024-06-27 18:01:49,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:49,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590928157] [2024-06-27 18:01:49,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:49,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:49,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:49,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590928157] [2024-06-27 18:01:49,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590928157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:49,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:49,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:01:49,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746283826] [2024-06-27 18:01:49,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:49,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:01:49,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:49,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:01:49,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:01:49,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 18:01:49,693 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) [2024-06-27 18:01:49,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:49,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 18:01:49,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:49,930 INFO L124 PetriNetUnfolderBase]: 300/606 cut-off events. [2024-06-27 18:01:49,930 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-27 18:01:49,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 606 events. 300/606 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2687 event pairs, 30 based on Foata normal form. 0/508 useless extension candidates. Maximal degree in co-relation 1226. Up to 339 conditions per place. [2024-06-27 18:01:49,935 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 54 selfloop transitions, 15 changer transitions 0/78 dead transitions. [2024-06-27 18:01:49,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 78 transitions, 321 flow [2024-06-27 18:01:49,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:01:49,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:01:49,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-27 18:01:49,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532520325203252 [2024-06-27 18:01:49,940 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 93 flow. Second operand 6 states and 131 transitions. [2024-06-27 18:01:49,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 78 transitions, 321 flow [2024-06-27 18:01:49,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 78 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:01:49,943 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 184 flow [2024-06-27 18:01:49,943 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} [2024-06-27 18:01:49,944 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-06-27 18:01:49,944 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 184 flow [2024-06-27 18:01:49,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:01:49,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:49,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:49,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:01:49,945 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-27 18:01:49,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:49,945 INFO L85 PathProgramCache]: Analyzing trace with hash 110345772, now seen corresponding path program 1 times [2024-06-27 18:01:49,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:49,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96138290] [2024-06-27 18:01:49,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:49,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:50,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:50,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96138290] [2024-06-27 18:01:50,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96138290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:50,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:50,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:01:50,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953064955] [2024-06-27 18:01:50,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:50,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:01:50,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:50,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:01:50,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:01:50,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 18:01:50,045 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) [2024-06-27 18:01:50,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:50,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 18:01:50,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:50,235 INFO L124 PetriNetUnfolderBase]: 360/715 cut-off events. [2024-06-27 18:01:50,236 INFO L125 PetriNetUnfolderBase]: For 280/282 co-relation queries the response was YES. [2024-06-27 18:01:50,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1796 conditions, 715 events. 360/715 cut-off events. For 280/282 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3282 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. [2024-06-27 18:01:50,239 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 66 selfloop transitions, 24 changer transitions 0/98 dead transitions. [2024-06-27 18:01:50,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 98 transitions, 530 flow [2024-06-27 18:01:50,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:01:50,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:01:50,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-27 18:01:50,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5284552845528455 [2024-06-27 18:01:50,241 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 184 flow. Second operand 6 states and 130 transitions. [2024-06-27 18:01:50,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 98 transitions, 530 flow [2024-06-27 18:01:50,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 98 transitions, 520 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:01:50,246 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 371 flow [2024-06-27 18:01:50,246 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} [2024-06-27 18:01:50,247 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 19 predicate places. [2024-06-27 18:01:50,247 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 371 flow [2024-06-27 18:01:50,247 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) [2024-06-27 18:01:50,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:50,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:50,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:01:50,248 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)] === [2024-06-27 18:01:50,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:50,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1688198351, now seen corresponding path program 1 times [2024-06-27 18:01:50,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:50,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492178250] [2024-06-27 18:01:50,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:50,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:50,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:50,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492178250] [2024-06-27 18:01:50,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492178250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:50,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:50,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:01:50,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544243183] [2024-06-27 18:01:50,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:50,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:01:50,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:50,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:01:50,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:01:50,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-27 18:01:50,412 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) [2024-06-27 18:01:50,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:50,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-27 18:01:50,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:50,559 INFO L124 PetriNetUnfolderBase]: 196/419 cut-off events. [2024-06-27 18:01:50,559 INFO L125 PetriNetUnfolderBase]: For 521/533 co-relation queries the response was YES. [2024-06-27 18:01:50,561 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 1630 event pairs, 67 based on Foata normal form. 12/401 useless extension candidates. Maximal degree in co-relation 1295. Up to 296 conditions per place. [2024-06-27 18:01:50,563 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 50 selfloop transitions, 9 changer transitions 3/76 dead transitions. [2024-06-27 18:01:50,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 76 transitions, 477 flow [2024-06-27 18:01:50,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:01:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:01:50,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-27 18:01:50,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532520325203252 [2024-06-27 18:01:50,566 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 371 flow. Second operand 6 states and 131 transitions. [2024-06-27 18:01:50,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 76 transitions, 477 flow [2024-06-27 18:01:50,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 465 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 18:01:50,575 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 333 flow [2024-06-27 18:01:50,575 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} [2024-06-27 18:01:50,577 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 26 predicate places. [2024-06-27 18:01:50,577 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 333 flow [2024-06-27 18:01:50,577 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) [2024-06-27 18:01:50,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:50,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:50,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:01:50,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-27 18:01:50,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:50,578 INFO L85 PathProgramCache]: Analyzing trace with hash -723101792, now seen corresponding path program 1 times [2024-06-27 18:01:50,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:50,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490386494] [2024-06-27 18:01:50,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:50,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:50,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:50,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490386494] [2024-06-27 18:01:50,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490386494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:50,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:50,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:01:50,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959750477] [2024-06-27 18:01:50,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:50,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:01:50,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:50,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:01:50,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:01:50,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-27 18:01:50,799 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) [2024-06-27 18:01:50,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:50,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-27 18:01:50,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:50,979 INFO L124 PetriNetUnfolderBase]: 224/474 cut-off events. [2024-06-27 18:01:50,979 INFO L125 PetriNetUnfolderBase]: For 804/823 co-relation queries the response was YES. [2024-06-27 18:01:50,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1599 conditions, 474 events. 224/474 cut-off events. For 804/823 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1860 event pairs, 26 based on Foata normal form. 8/454 useless extension candidates. Maximal degree in co-relation 1571. Up to 174 conditions per place. [2024-06-27 18:01:50,983 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 84 selfloop transitions, 10 changer transitions 0/109 dead transitions. [2024-06-27 18:01:50,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 109 transitions, 867 flow [2024-06-27 18:01:50,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:01:50,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:01:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-27 18:01:50,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5284552845528455 [2024-06-27 18:01:50,987 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 333 flow. Second operand 6 states and 130 transitions. [2024-06-27 18:01:50,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 109 transitions, 867 flow [2024-06-27 18:01:50,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 842 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 18:01:50,996 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 382 flow [2024-06-27 18:01:50,996 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} [2024-06-27 18:01:50,998 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 31 predicate places. [2024-06-27 18:01:50,999 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 382 flow [2024-06-27 18:01:50,999 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) [2024-06-27 18:01:50,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:50,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:50,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:01:50,999 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-27 18:01:51,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:51,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1671457488, now seen corresponding path program 2 times [2024-06-27 18:01:51,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:51,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548492474] [2024-06-27 18:01:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:51,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:51,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:51,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548492474] [2024-06-27 18:01:51,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548492474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:51,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:51,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:01:51,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114012977] [2024-06-27 18:01:51,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:51,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:01:51,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:51,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:01:51,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:01:51,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-27 18:01:51,185 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) [2024-06-27 18:01:51,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:51,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-27 18:01:51,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:51,339 INFO L124 PetriNetUnfolderBase]: 298/662 cut-off events. [2024-06-27 18:01:51,340 INFO L125 PetriNetUnfolderBase]: For 1099/1122 co-relation queries the response was YES. [2024-06-27 18:01:51,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2481 conditions, 662 events. 298/662 cut-off events. For 1099/1122 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3107 event pairs, 45 based on Foata normal form. 19/678 useless extension candidates. Maximal degree in co-relation 2451. Up to 332 conditions per place. [2024-06-27 18:01:51,344 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 77 selfloop transitions, 17 changer transitions 4/113 dead transitions. [2024-06-27 18:01:51,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 113 transitions, 871 flow [2024-06-27 18:01:51,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:01:51,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:01:51,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-27 18:01:51,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528455284552846 [2024-06-27 18:01:51,346 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 382 flow. Second operand 6 states and 136 transitions. [2024-06-27 18:01:51,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 113 transitions, 871 flow [2024-06-27 18:01:51,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 113 transitions, 863 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:01:51,352 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 477 flow [2024-06-27 18:01:51,353 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} [2024-06-27 18:01:51,355 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 36 predicate places. [2024-06-27 18:01:51,355 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 477 flow [2024-06-27 18:01:51,355 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) [2024-06-27 18:01:51,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:51,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:51,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:01:51,356 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-27 18:01:51,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:51,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1463635158, now seen corresponding path program 3 times [2024-06-27 18:01:51,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:51,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903866463] [2024-06-27 18:01:51,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:51,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:51,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:51,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903866463] [2024-06-27 18:01:51,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903866463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:51,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:51,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:01:51,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171079728] [2024-06-27 18:01:51,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:51,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:01:51,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:51,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:01:51,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:01:51,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-27 18:01:51,447 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) [2024-06-27 18:01:51,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:51,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-27 18:01:51,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:51,642 INFO L124 PetriNetUnfolderBase]: 347/792 cut-off events. [2024-06-27 18:01:51,642 INFO L125 PetriNetUnfolderBase]: For 1749/1774 co-relation queries the response was YES. [2024-06-27 18:01:51,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3178 conditions, 792 events. 347/792 cut-off events. For 1749/1774 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3913 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. [2024-06-27 18:01:51,649 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 105 selfloop transitions, 20 changer transitions 4/144 dead transitions. [2024-06-27 18:01:51,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 144 transitions, 1259 flow [2024-06-27 18:01:51,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:01:51,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:01:51,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 18:01:51,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813008130081301 [2024-06-27 18:01:51,650 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 477 flow. Second operand 6 states and 143 transitions. [2024-06-27 18:01:51,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 144 transitions, 1259 flow [2024-06-27 18:01:51,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 144 transitions, 1239 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 18:01:51,661 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 647 flow [2024-06-27 18:01:51,661 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} [2024-06-27 18:01:51,662 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 42 predicate places. [2024-06-27 18:01:51,662 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 647 flow [2024-06-27 18:01:51,662 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) [2024-06-27 18:01:51,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:51,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:51,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:01:51,663 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-27 18:01:51,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:51,663 INFO L85 PathProgramCache]: Analyzing trace with hash -703660862, now seen corresponding path program 4 times [2024-06-27 18:01:51,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:51,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060764048] [2024-06-27 18:01:51,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:51,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:51,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:51,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060764048] [2024-06-27 18:01:51,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060764048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:51,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:51,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:01:51,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719641388] [2024-06-27 18:01:51,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:51,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:01:51,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:51,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:01:51,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:01:51,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-27 18:01:51,846 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) [2024-06-27 18:01:51,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:51,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-27 18:01:51,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:51,972 INFO L124 PetriNetUnfolderBase]: 109/306 cut-off events. [2024-06-27 18:01:51,972 INFO L125 PetriNetUnfolderBase]: For 1216/1224 co-relation queries the response was YES. [2024-06-27 18:01:51,973 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 1266 event pairs, 9 based on Foata normal form. 14/316 useless extension candidates. Maximal degree in co-relation 1402. Up to 131 conditions per place. [2024-06-27 18:01:51,975 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 54 selfloop transitions, 26 changer transitions 8/98 dead transitions. [2024-06-27 18:01:51,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 98 transitions, 944 flow [2024-06-27 18:01:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:01:51,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:01:51,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 18:01:51,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556910569105691 [2024-06-27 18:01:51,976 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 647 flow. Second operand 6 states and 137 transitions. [2024-06-27 18:01:51,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 98 transitions, 944 flow [2024-06-27 18:01:51,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 98 transitions, 780 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-27 18:01:51,983 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 542 flow [2024-06-27 18:01:51,983 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} [2024-06-27 18:01:51,983 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 35 predicate places. [2024-06-27 18:01:51,983 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 542 flow [2024-06-27 18:01:51,984 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) [2024-06-27 18:01:51,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:51,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:51,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:01:51,984 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-27 18:01:51,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:51,985 INFO L85 PathProgramCache]: Analyzing trace with hash 41230064, now seen corresponding path program 1 times [2024-06-27 18:01:51,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:51,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164385148] [2024-06-27 18:01:51,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:51,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:52,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:52,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164385148] [2024-06-27 18:01:52,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164385148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:52,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:52,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:01:52,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576993091] [2024-06-27 18:01:52,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:52,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:01:52,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:52,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:01:52,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:01:52,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-27 18:01:52,160 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) [2024-06-27 18:01:52,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:52,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-27 18:01:52,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:52,379 INFO L124 PetriNetUnfolderBase]: 149/394 cut-off events. [2024-06-27 18:01:52,380 INFO L125 PetriNetUnfolderBase]: For 1483/1497 co-relation queries the response was YES. [2024-06-27 18:01:52,381 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 1765 event pairs, 25 based on Foata normal form. 10/403 useless extension candidates. Maximal degree in co-relation 1744. Up to 223 conditions per place. [2024-06-27 18:01:52,383 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 85 selfloop transitions, 24 changer transitions 6/125 dead transitions. [2024-06-27 18:01:52,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 125 transitions, 1229 flow [2024-06-27 18:01:52,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:01:52,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:01:52,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-06-27 18:01:52,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067750677506775 [2024-06-27 18:01:52,384 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 542 flow. Second operand 9 states and 187 transitions. [2024-06-27 18:01:52,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 125 transitions, 1229 flow [2024-06-27 18:01:52,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 125 transitions, 1096 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-27 18:01:52,395 INFO L231 Difference]: Finished difference. Result has 75 places, 87 transitions, 712 flow [2024-06-27 18:01:52,395 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} [2024-06-27 18:01:52,395 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 38 predicate places. [2024-06-27 18:01:52,395 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 87 transitions, 712 flow [2024-06-27 18:01:52,396 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) [2024-06-27 18:01:52,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:52,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:52,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:01:52,396 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-27 18:01:52,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:52,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1826812508, now seen corresponding path program 2 times [2024-06-27 18:01:52,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:52,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209813528] [2024-06-27 18:01:52,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:52,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:52,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:52,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:52,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209813528] [2024-06-27 18:01:52,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209813528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:52,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:52,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:01:52,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786507820] [2024-06-27 18:01:52,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:52,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:01:52,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:52,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:01:52,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:01:52,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-27 18:01:52,586 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) [2024-06-27 18:01:52,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:52,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-27 18:01:52,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:52,796 INFO L124 PetriNetUnfolderBase]: 194/513 cut-off events. [2024-06-27 18:01:52,797 INFO L125 PetriNetUnfolderBase]: For 2217/2237 co-relation queries the response was YES. [2024-06-27 18:01:52,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2276 conditions, 513 events. 194/513 cut-off events. For 2217/2237 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2536 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. [2024-06-27 18:01:52,801 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 100 selfloop transitions, 24 changer transitions 4/138 dead transitions. [2024-06-27 18:01:52,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 138 transitions, 1364 flow [2024-06-27 18:01:52,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:01:52,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:01:52,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-27 18:01:52,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4959349593495935 [2024-06-27 18:01:52,802 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 712 flow. Second operand 9 states and 183 transitions. [2024-06-27 18:01:52,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 138 transitions, 1364 flow [2024-06-27 18:01:52,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 138 transitions, 1339 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:01:52,811 INFO L231 Difference]: Finished difference. Result has 85 places, 104 transitions, 929 flow [2024-06-27 18:01:52,811 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} [2024-06-27 18:01:52,812 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 48 predicate places. [2024-06-27 18:01:52,812 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 104 transitions, 929 flow [2024-06-27 18:01:52,812 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) [2024-06-27 18:01:52,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:52,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:01:52,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:01:52,812 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-27 18:01:52,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:52,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1587759846, now seen corresponding path program 3 times [2024-06-27 18:01:52,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:52,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037394449] [2024-06-27 18:01:52,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:52,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:52,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:52,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:52,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037394449] [2024-06-27 18:01:52,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037394449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:01:52,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:01:52,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:01:52,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083619892] [2024-06-27 18:01:52,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:01:52,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:01:52,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:52,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:01:52,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:01:52,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-27 18:01:52,972 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) [2024-06-27 18:01:52,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:52,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-27 18:01:52,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:53,267 INFO L124 PetriNetUnfolderBase]: 253/672 cut-off events. [2024-06-27 18:01:53,268 INFO L125 PetriNetUnfolderBase]: For 3100/3120 co-relation queries the response was YES. [2024-06-27 18:01:53,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3119 conditions, 672 events. 253/672 cut-off events. For 3100/3120 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3142 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. [2024-06-27 18:01:53,274 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 129 selfloop transitions, 52 changer transitions 4/195 dead transitions. [2024-06-27 18:01:53,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 195 transitions, 2053 flow [2024-06-27 18:01:53,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:01:53,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:01:53,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2024-06-27 18:01:53,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526829268292683 [2024-06-27 18:01:53,276 INFO L175 Difference]: Start difference. First operand has 85 places, 104 transitions, 929 flow. Second operand 10 states and 216 transitions. [2024-06-27 18:01:53,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 195 transitions, 2053 flow [2024-06-27 18:01:53,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 195 transitions, 2023 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-06-27 18:01:53,289 INFO L231 Difference]: Finished difference. Result has 100 places, 140 transitions, 1532 flow [2024-06-27 18:01:53,290 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} [2024-06-27 18:01:53,290 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 63 predicate places. [2024-06-27 18:01:53,290 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 140 transitions, 1532 flow [2024-06-27 18:01:53,291 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) [2024-06-27 18:01:53,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:01:53,291 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] [2024-06-27 18:01:53,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:01:53,291 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-27 18:01:53,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:01:53,292 INFO L85 PathProgramCache]: Analyzing trace with hash -487724240, now seen corresponding path program 1 times [2024-06-27 18:01:53,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:01:53,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612068328] [2024-06-27 18:01:53,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:53,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:01:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 18:01:53,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:01:53,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612068328] [2024-06-27 18:01:53,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612068328] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:01:53,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663957876] [2024-06-27 18:01:53,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:01:53,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:01:53,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:01:53,624 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) [2024-06-27 18:01:53,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 18:01:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:01:53,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 30 conjunts are in the unsatisfiable core [2024-06-27 18:01:53,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:01:53,964 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 [2024-06-27 18:01:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:54,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:01:54,247 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-06-27 18:01:54,247 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 [2024-06-27 18:01:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:01:54,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663957876] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:01:54,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:01:54,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2024-06-27 18:01:54,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344058588] [2024-06-27 18:01:54,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:01:54,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-06-27 18:01:54,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:01:54,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-06-27 18:01:54,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-06-27 18:01:54,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 18:01:54,300 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) [2024-06-27 18:01:54,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:01:54,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 18:01:54,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:01:54,954 INFO L124 PetriNetUnfolderBase]: 387/970 cut-off events. [2024-06-27 18:01:54,954 INFO L125 PetriNetUnfolderBase]: For 6788/6810 co-relation queries the response was YES. [2024-06-27 18:01:54,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5227 conditions, 970 events. 387/970 cut-off events. For 6788/6810 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4947 event pairs, 20 based on Foata normal form. 35/1004 useless extension candidates. Maximal degree in co-relation 5191. Up to 242 conditions per place. [2024-06-27 18:01:54,959 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 0 selfloop transitions, 0 changer transitions 307/307 dead transitions. [2024-06-27 18:01:54,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 307 transitions, 3943 flow [2024-06-27 18:01:54,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-06-27 18:01:54,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-06-27 18:01:54,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 328 transitions. [2024-06-27 18:01:54,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 18:01:54,961 INFO L175 Difference]: Start difference. First operand has 100 places, 140 transitions, 1532 flow. Second operand 22 states and 328 transitions. [2024-06-27 18:01:54,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 307 transitions, 3943 flow [2024-06-27 18:01:54,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 307 transitions, 3675 flow, removed 121 selfloop flow, removed 4 redundant places. [2024-06-27 18:01:54,982 INFO L231 Difference]: Finished difference. Result has 115 places, 0 transitions, 0 flow [2024-06-27 18:01:54,982 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} [2024-06-27 18:01:54,983 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 78 predicate places. [2024-06-27 18:01:54,983 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 0 transitions, 0 flow [2024-06-27 18:01:54,983 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) [2024-06-27 18:01:54,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-27 18:01:54,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2024-06-27 18:01:54,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-06-27 18:01:54,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-06-27 18:01:54,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-06-27 18:01:54,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-06-27 18:01:55,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 18:01:55,201 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 [2024-06-27 18:01:55,202 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1] [2024-06-27 18:01:55,206 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 18:01:55,206 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 18:01:55,208 INFO L507 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-06-27 18:01:55,208 INFO L508 ceAbstractionStarter]: WitnessConsidered=1 [2024-06-27 18:01:55,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 06:01:55 BasicIcfg [2024-06-27 18:01:55,209 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 18:01:55,209 INFO L158 Benchmark]: Toolchain (without parser) took 8666.78ms. Allocated memory was 146.8MB in the beginning and 388.0MB in the end (delta: 241.2MB). Free memory was 114.1MB in the beginning and 131.2MB in the end (delta: -17.2MB). Peak memory consumption was 223.3MB. Max. memory is 16.1GB. [2024-06-27 18:01:55,209 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 111.1MB. Free memory is still 69.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:01:55,210 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 111.1MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:01:55,210 INFO L158 Benchmark]: CACSL2BoogieTranslator took 583.82ms. Allocated memory is still 146.8MB. Free memory was 114.1MB in the beginning and 88.0MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-27 18:01:55,210 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.49ms. Allocated memory is still 146.8MB. Free memory was 88.0MB in the beginning and 84.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 18:01:55,210 INFO L158 Benchmark]: Boogie Preprocessor took 64.80ms. Allocated memory is still 146.8MB. Free memory was 84.7MB in the beginning and 81.4MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 18:01:55,210 INFO L158 Benchmark]: RCFGBuilder took 1248.57ms. Allocated memory was 146.8MB in the beginning and 203.4MB in the end (delta: 56.6MB). Free memory was 81.4MB in the beginning and 108.1MB in the end (delta: -26.7MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2024-06-27 18:01:55,210 INFO L158 Benchmark]: TraceAbstraction took 6691.68ms. Allocated memory was 203.4MB in the beginning and 388.0MB in the end (delta: 184.5MB). Free memory was 108.1MB in the beginning and 131.2MB in the end (delta: -23.1MB). Peak memory consumption was 161.9MB. Max. memory is 16.1GB. [2024-06-27 18:01:55,212 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 111.1MB. Free memory is still 69.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.11ms. Allocated memory is still 111.1MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 583.82ms. Allocated memory is still 146.8MB. Free memory was 114.1MB in the beginning and 88.0MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.49ms. Allocated memory is still 146.8MB. Free memory was 88.0MB in the beginning and 84.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.80ms. Allocated memory is still 146.8MB. Free memory was 84.7MB in the beginning and 81.4MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1248.57ms. Allocated memory was 146.8MB in the beginning and 203.4MB in the end (delta: 56.6MB). Free memory was 81.4MB in the beginning and 108.1MB in the end (delta: -26.7MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. * TraceAbstraction took 6691.68ms. Allocated memory was 203.4MB in the beginning and 388.0MB in the end (delta: 184.5MB). Free memory was 108.1MB in the beginning and 131.2MB in the end (delta: -23.1MB). Peak memory consumption was 161.9MB. 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: 6.6s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 854 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 835 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2151 IncrementalHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 13 mSDtfsCounter, 2151 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.9s 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, 2.4s InterpolantComputationTime, 225 NumberOfCodeBlocks, 225 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 241 ConstructedInterpolants, 5 QuantifiedInterpolants, 1963 SizeOfPredicates, 14 NumberOfNonLiveVariables, 206 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! [2024-06-27 18:01:55,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE