./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/read_write_lock-1.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/pthread-atomic/read_write_lock-1.i ./goblint.2024-06-19_11-23-25.files/protection/read_write_lock-1.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 19:17:36,881 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:17:36,917 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:17:36,921 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:17:36,921 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:17:36,936 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:17:36,936 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:17:36,937 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:17:36,937 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:17:36,937 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:17:36,938 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:17:36,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:17:36,939 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:17:36,939 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:17:36,939 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:17:36,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:17:36,940 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:17:36,940 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:17:36,941 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:17:36,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:17:36,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:17:36,942 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:17:36,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:17:36,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:17:36,943 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:17:36,943 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:17:36,943 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:17:36,944 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:17:36,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:17:36,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:17:36,945 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:17:36,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:17:36,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:17:36,945 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:17:36,946 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:17:36,946 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:17:36,946 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:17:36,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:17:36,947 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:17:36,947 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:17:36,947 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:17:36,948 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:17:36,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:17:36,948 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 19:17:37,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:17:37,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:17:37,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:17:37,122 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:17:37,122 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:17:37,123 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2024-06-27 19:17:38,276 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:17:38,576 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:17:38,576 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2024-06-27 19:17:38,587 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adaf39116/c06f0bd968e94b64a84ba9e7b372909a/FLAGbf0a553f1 [2024-06-27 19:17:38,597 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adaf39116/c06f0bd968e94b64a84ba9e7b372909a [2024-06-27 19:17:38,599 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:17:38,604 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:17:38,605 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/read_write_lock-1.yml/witness.yml [2024-06-27 19:17:38,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:17:38,704 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:17:38,705 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:17:38,706 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:17:38,709 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:17:38,710 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:17:38" (1/2) ... [2024-06-27 19:17:38,711 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f7efb32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:17:38, skipping insertion in model container [2024-06-27 19:17:38,711 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:17:38" (1/2) ... [2024-06-27 19:17:38,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@122ad626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:17:38, skipping insertion in model container [2024-06-27 19:17:38,712 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:17:38" (2/2) ... [2024-06-27 19:17:38,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f7efb32 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:38, skipping insertion in model container [2024-06-27 19:17:38,713 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:17:38" (2/2) ... [2024-06-27 19:17:38,713 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:17:38,738 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:17:38,739 INFO L97 edCorrectnessWitness]: Location invariant before [L747-L747] ((! multithreaded || (w == 0 || w == 1)) && (! multithreaded || (x == 0 || x == 3))) && (! multithreaded || (y == 0 || y == 3)) [2024-06-27 19:17:38,739 INFO L97 edCorrectnessWitness]: Location invariant before [L746-L746] ((! multithreaded || (w == 0 || w == 1)) && (! multithreaded || (x == 0 || x == 3))) && (! multithreaded || (y == 0 || y == 3)) [2024-06-27 19:17:38,739 INFO L97 edCorrectnessWitness]: Location invariant before [L748-L748] ((! multithreaded || (w == 0 || w == 1)) && (! multithreaded || (x == 0 || x == 3))) && (! multithreaded || (y == 0 || y == 3)) [2024-06-27 19:17:38,739 INFO L97 edCorrectnessWitness]: Location invariant before [L749-L749] ((! multithreaded || (w == 0 || w == 1)) && (! multithreaded || (x == 0 || x == 3))) && (! multithreaded || (y == 0 || y == 3)) [2024-06-27 19:17:38,739 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:17:38,739 INFO L106 edCorrectnessWitness]: ghost_update [L745-L745] multithreaded = 1; [2024-06-27 19:17:38,767 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:17:38,985 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:17:38,992 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:17:39,097 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:17:39,129 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:17:39,130 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:39 WrapperNode [2024-06-27 19:17:39,130 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:17:39,131 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:17:39,131 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:17:39,131 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:17:39,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:39" (1/1) ... [2024-06-27 19:17:39,162 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:39" (1/1) ... [2024-06-27 19:17:39,178 INFO L138 Inliner]: procedures = 173, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 98 [2024-06-27 19:17:39,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:17:39,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:17:39,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:17:39,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:17:39,188 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:39" (1/1) ... [2024-06-27 19:17:39,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:39" (1/1) ... [2024-06-27 19:17:39,190 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:39" (1/1) ... [2024-06-27 19:17:39,199 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 19:17:39,199 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:39" (1/1) ... [2024-06-27 19:17:39,200 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:39" (1/1) ... [2024-06-27 19:17:39,204 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:39" (1/1) ... [2024-06-27 19:17:39,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:39" (1/1) ... [2024-06-27 19:17:39,207 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:39" (1/1) ... [2024-06-27 19:17:39,208 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:39" (1/1) ... [2024-06-27 19:17:39,210 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:17:39,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:17:39,211 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:17:39,211 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:17:39,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:39" (1/1) ... [2024-06-27 19:17:39,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:17:39,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:17:39,253 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 19:17:39,268 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 19:17:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:17:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:17:39,291 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-06-27 19:17:39,291 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-06-27 19:17:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:17:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:17:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:17:39,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:17:39,292 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-06-27 19:17:39,292 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-06-27 19:17:39,293 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 19:17:39,404 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:17:39,406 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:17:39,610 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:17:39,614 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:17:39,686 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:17:39,686 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:17:39,687 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:17:39 BoogieIcfgContainer [2024-06-27 19:17:39,687 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:17:39,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:17:39,688 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:17:39,693 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:17:39,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:17:38" (1/4) ... [2024-06-27 19:17:39,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3293a654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:17:39, skipping insertion in model container [2024-06-27 19:17:39,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:17:38" (2/4) ... [2024-06-27 19:17:39,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3293a654 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:17:39, skipping insertion in model container [2024-06-27 19:17:39,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:39" (3/4) ... [2024-06-27 19:17:39,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3293a654 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:17:39, skipping insertion in model container [2024-06-27 19:17:39,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:17:39" (4/4) ... [2024-06-27 19:17:39,695 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2024-06-27 19:17:39,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:17:39,708 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 19:17:39,708 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:17:39,745 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-27 19:17:39,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 55 transitions, 138 flow [2024-06-27 19:17:39,812 INFO L124 PetriNetUnfolderBase]: 0/51 cut-off events. [2024-06-27 19:17:39,812 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 19:17:39,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 51 events. 0/51 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-27 19:17:39,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 55 transitions, 138 flow [2024-06-27 19:17:39,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 45 transitions, 102 flow [2024-06-27 19:17:39,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:17:39,839 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;@481482dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:17:39,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 19:17:39,845 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:17:39,845 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 19:17:39,845 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:17:39,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:17:39,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:17:39,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:17:39,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:17:39,852 INFO L85 PathProgramCache]: Analyzing trace with hash 237533242, now seen corresponding path program 1 times [2024-06-27 19:17:39,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:17:39,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395494563] [2024-06-27 19:17:39,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:17:39,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:17:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:17:40,125 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 19:17:40,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:17:40,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395494563] [2024-06-27 19:17:40,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395494563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:17:40,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:17:40,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:17:40,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620658220] [2024-06-27 19:17:40,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:17:40,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:17:40,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:17:40,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:17:40,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:17:40,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 55 [2024-06-27 19:17:40,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:17:40,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:17:40,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 55 [2024-06-27 19:17:40,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:17:41,278 INFO L124 PetriNetUnfolderBase]: 7973/11887 cut-off events. [2024-06-27 19:17:41,279 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-06-27 19:17:41,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23069 conditions, 11887 events. 7973/11887 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 72043 event pairs, 4535 based on Foata normal form. 9/11678 useless extension candidates. Maximal degree in co-relation 23056. Up to 10819 conditions per place. [2024-06-27 19:17:41,354 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 47 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2024-06-27 19:17:41,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 251 flow [2024-06-27 19:17:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:17:41,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:17:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-27 19:17:41,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6303030303030303 [2024-06-27 19:17:41,367 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 102 flow. Second operand 3 states and 104 transitions. [2024-06-27 19:17:41,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 251 flow [2024-06-27 19:17:41,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 244 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 19:17:41,377 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 137 flow [2024-06-27 19:17:41,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-27 19:17:41,381 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -1 predicate places. [2024-06-27 19:17:41,382 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 137 flow [2024-06-27 19:17:41,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:17:41,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:17:41,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:17:41,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:17:41,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:17:41,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:17:41,384 INFO L85 PathProgramCache]: Analyzing trace with hash 637084125, now seen corresponding path program 1 times [2024-06-27 19:17:41,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:17:41,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934922721] [2024-06-27 19:17:41,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:17:41,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:17:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:17:41,488 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 19:17:41,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:17:41,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934922721] [2024-06-27 19:17:41,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934922721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:17:41,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:17:41,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:17:41,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679263198] [2024-06-27 19:17:41,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:17:41,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:17:41,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:17:41,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:17:41,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:17:41,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-06-27 19:17:41,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 19:17:41,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:17:41,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-06-27 19:17:41,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:17:42,808 INFO L124 PetriNetUnfolderBase]: 12553/18106 cut-off events. [2024-06-27 19:17:42,808 INFO L125 PetriNetUnfolderBase]: For 2961/2961 co-relation queries the response was YES. [2024-06-27 19:17:42,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39812 conditions, 18106 events. 12553/18106 cut-off events. For 2961/2961 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 106983 event pairs, 6762 based on Foata normal form. 115/18135 useless extension candidates. Maximal degree in co-relation 39800. Up to 16792 conditions per place. [2024-06-27 19:17:42,918 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 61 selfloop transitions, 9 changer transitions 0/79 dead transitions. [2024-06-27 19:17:42,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 79 transitions, 353 flow [2024-06-27 19:17:42,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:17:42,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:17:42,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-06-27 19:17:42,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6090909090909091 [2024-06-27 19:17:42,922 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 137 flow. Second operand 4 states and 134 transitions. [2024-06-27 19:17:42,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 79 transitions, 353 flow [2024-06-27 19:17:42,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:17:42,925 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 192 flow [2024-06-27 19:17:42,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-06-27 19:17:42,926 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2024-06-27 19:17:42,926 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 192 flow [2024-06-27 19:17:42,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 19:17:42,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:17:42,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:17:42,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:17:42,929 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:17:42,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:17:42,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1725227283, now seen corresponding path program 1 times [2024-06-27 19:17:42,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:17:42,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756373555] [2024-06-27 19:17:42,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:17:42,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:17:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:17:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:17:43,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:17:43,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756373555] [2024-06-27 19:17:43,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756373555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:17:43,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:17:43,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:17:43,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643533699] [2024-06-27 19:17:43,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:17:43,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:17:43,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:17:43,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:17:43,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:17:43,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-06-27 19:17:43,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 192 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 19:17:43,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:17:43,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-06-27 19:17:43,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:17:44,435 INFO L124 PetriNetUnfolderBase]: 11740/17100 cut-off events. [2024-06-27 19:17:44,435 INFO L125 PetriNetUnfolderBase]: For 9422/9422 co-relation queries the response was YES. [2024-06-27 19:17:44,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43890 conditions, 17100 events. 11740/17100 cut-off events. For 9422/9422 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 101943 event pairs, 4126 based on Foata normal form. 339/17270 useless extension candidates. Maximal degree in co-relation 43876. Up to 13739 conditions per place. [2024-06-27 19:17:44,520 INFO L140 encePairwiseOnDemand]: 40/55 looper letters, 81 selfloop transitions, 21 changer transitions 0/111 dead transitions. [2024-06-27 19:17:44,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 111 transitions, 588 flow [2024-06-27 19:17:44,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:17:44,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:17:44,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-06-27 19:17:44,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6327272727272727 [2024-06-27 19:17:44,522 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 192 flow. Second operand 5 states and 174 transitions. [2024-06-27 19:17:44,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 111 transitions, 588 flow [2024-06-27 19:17:44,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 111 transitions, 572 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 19:17:44,526 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 345 flow [2024-06-27 19:17:44,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-06-27 19:17:44,527 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 7 predicate places. [2024-06-27 19:17:44,527 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 345 flow [2024-06-27 19:17:44,527 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 19:17:44,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:17:44,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:17:44,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:17:44,528 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:17:44,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:17:44,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1913777988, now seen corresponding path program 1 times [2024-06-27 19:17:44,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:17:44,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242053174] [2024-06-27 19:17:44,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:17:44,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:17:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:17:44,588 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 19:17:44,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:17:44,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242053174] [2024-06-27 19:17:44,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242053174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:17:44,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:17:44,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:17:44,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726254267] [2024-06-27 19:17:44,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:17:44,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:17:44,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:17:44,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:17:44,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:17:44,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-06-27 19:17:44,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 345 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 19:17:44,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:17:44,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-06-27 19:17:44,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:17:45,843 INFO L124 PetriNetUnfolderBase]: 11526/16755 cut-off events. [2024-06-27 19:17:45,844 INFO L125 PetriNetUnfolderBase]: For 27421/27430 co-relation queries the response was YES. [2024-06-27 19:17:45,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53614 conditions, 16755 events. 11526/16755 cut-off events. For 27421/27430 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 99581 event pairs, 3905 based on Foata normal form. 110/16702 useless extension candidates. Maximal degree in co-relation 53597. Up to 13709 conditions per place. [2024-06-27 19:17:45,940 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 81 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2024-06-27 19:17:45,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 107 transitions, 671 flow [2024-06-27 19:17:45,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:17:45,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:17:45,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-06-27 19:17:45,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.610909090909091 [2024-06-27 19:17:45,942 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 345 flow. Second operand 5 states and 168 transitions. [2024-06-27 19:17:45,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 107 transitions, 671 flow [2024-06-27 19:17:45,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 107 transitions, 663 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 19:17:45,948 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 375 flow [2024-06-27 19:17:45,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=375, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2024-06-27 19:17:45,949 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2024-06-27 19:17:45,949 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 375 flow [2024-06-27 19:17:45,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 19:17:45,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:17:45,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:17:45,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:17:45,950 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:17:45,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:17:45,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1287653364, now seen corresponding path program 1 times [2024-06-27 19:17:45,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:17:45,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583039516] [2024-06-27 19:17:45,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:17:45,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:17:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:17:46,009 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 19:17:46,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:17:46,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583039516] [2024-06-27 19:17:46,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583039516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:17:46,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:17:46,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:17:46,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846560339] [2024-06-27 19:17:46,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:17:46,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:17:46,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:17:46,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:17:46,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:17:46,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2024-06-27 19:17:46,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 375 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:17:46,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:17:46,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2024-06-27 19:17:46,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:17:47,130 INFO L124 PetriNetUnfolderBase]: 11842/17691 cut-off events. [2024-06-27 19:17:47,130 INFO L125 PetriNetUnfolderBase]: For 36007/36021 co-relation queries the response was YES. [2024-06-27 19:17:47,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58429 conditions, 17691 events. 11842/17691 cut-off events. For 36007/36021 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 111207 event pairs, 4815 based on Foata normal form. 50/17428 useless extension candidates. Maximal degree in co-relation 58409. Up to 15313 conditions per place. [2024-06-27 19:17:47,412 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 92 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-06-27 19:17:47,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 121 transitions, 840 flow [2024-06-27 19:17:47,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:17:47,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:17:47,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-27 19:17:47,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-06-27 19:17:47,414 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 375 flow. Second operand 6 states and 185 transitions. [2024-06-27 19:17:47,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 121 transitions, 840 flow [2024-06-27 19:17:47,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 121 transitions, 798 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 19:17:47,445 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 506 flow [2024-06-27 19:17:47,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=506, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2024-06-27 19:17:47,448 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 15 predicate places. [2024-06-27 19:17:47,448 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 506 flow [2024-06-27 19:17:47,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:17:47,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:17:47,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:17:47,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:17:47,451 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:17:47,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:17:47,451 INFO L85 PathProgramCache]: Analyzing trace with hash -469017365, now seen corresponding path program 1 times [2024-06-27 19:17:47,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:17:47,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128907689] [2024-06-27 19:17:47,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:17:47,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:17:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:17:47,615 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 19:17:47,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:17:47,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128907689] [2024-06-27 19:17:47,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128907689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:17:47,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:17:47,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:17:47,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155128486] [2024-06-27 19:17:47,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:17:47,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:17:47,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:17:47,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:17:47,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:17:47,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-27 19:17:47,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 506 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 19:17:47,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:17:47,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-27 19:17:47,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:17:48,994 INFO L124 PetriNetUnfolderBase]: 12933/18999 cut-off events. [2024-06-27 19:17:48,994 INFO L125 PetriNetUnfolderBase]: For 52045/52048 co-relation queries the response was YES. [2024-06-27 19:17:49,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64419 conditions, 18999 events. 12933/18999 cut-off events. For 52045/52048 co-relation queries the response was YES. Maximal size of possible extension queue 683. Compared 116330 event pairs, 4573 based on Foata normal form. 716/19540 useless extension candidates. Maximal degree in co-relation 64398. Up to 15514 conditions per place. [2024-06-27 19:17:49,129 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 130 selfloop transitions, 25 changer transitions 0/163 dead transitions. [2024-06-27 19:17:49,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 163 transitions, 1152 flow [2024-06-27 19:17:49,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:17:49,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:17:49,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 214 transitions. [2024-06-27 19:17:49,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6484848484848484 [2024-06-27 19:17:49,130 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 506 flow. Second operand 6 states and 214 transitions. [2024-06-27 19:17:49,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 163 transitions, 1152 flow [2024-06-27 19:17:49,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 163 transitions, 1142 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-27 19:17:49,166 INFO L231 Difference]: Finished difference. Result has 81 places, 89 transitions, 695 flow [2024-06-27 19:17:49,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=695, PETRI_PLACES=81, PETRI_TRANSITIONS=89} [2024-06-27 19:17:49,167 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2024-06-27 19:17:49,167 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 89 transitions, 695 flow [2024-06-27 19:17:49,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 19:17:49,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:17:49,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:17:49,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:17:49,168 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:17:49,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:17:49,169 INFO L85 PathProgramCache]: Analyzing trace with hash -484254485, now seen corresponding path program 2 times [2024-06-27 19:17:49,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:17:49,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559167541] [2024-06-27 19:17:49,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:17:49,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:17:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:17:49,231 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 19:17:49,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:17:49,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559167541] [2024-06-27 19:17:49,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559167541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:17:49,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:17:49,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:17:49,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240901370] [2024-06-27 19:17:49,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:17:49,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:17:49,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:17:49,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:17:49,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:17:49,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-27 19:17:49,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 89 transitions, 695 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 19:17:49,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:17:49,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-27 19:17:49,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:17:50,771 INFO L124 PetriNetUnfolderBase]: 13238/19672 cut-off events. [2024-06-27 19:17:50,771 INFO L125 PetriNetUnfolderBase]: For 82162/82169 co-relation queries the response was YES. [2024-06-27 19:17:50,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74943 conditions, 19672 events. 13238/19672 cut-off events. For 82162/82169 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 123676 event pairs, 4519 based on Foata normal form. 74/19568 useless extension candidates. Maximal degree in co-relation 74917. Up to 15670 conditions per place. [2024-06-27 19:17:50,913 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 125 selfloop transitions, 41 changer transitions 0/174 dead transitions. [2024-06-27 19:17:50,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 174 transitions, 1396 flow [2024-06-27 19:17:50,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:17:50,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:17:50,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 242 transitions. [2024-06-27 19:17:50,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-27 19:17:50,929 INFO L175 Difference]: Start difference. First operand has 81 places, 89 transitions, 695 flow. Second operand 8 states and 242 transitions. [2024-06-27 19:17:50,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 174 transitions, 1396 flow [2024-06-27 19:17:51,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 174 transitions, 1355 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-27 19:17:51,226 INFO L231 Difference]: Finished difference. Result has 89 places, 103 transitions, 911 flow [2024-06-27 19:17:51,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=911, PETRI_PLACES=89, PETRI_TRANSITIONS=103} [2024-06-27 19:17:51,227 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2024-06-27 19:17:51,227 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 103 transitions, 911 flow [2024-06-27 19:17:51,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 19:17:51,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:17:51,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:17:51,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:17:51,228 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:17:51,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:17:51,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1654100145, now seen corresponding path program 1 times [2024-06-27 19:17:51,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:17:51,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832955160] [2024-06-27 19:17:51,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:17:51,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:17:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:17:51,256 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 19:17:51,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:17:51,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832955160] [2024-06-27 19:17:51,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832955160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:17:51,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:17:51,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:17:51,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261579294] [2024-06-27 19:17:51,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:17:51,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:17:51,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:17:51,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:17:51,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:17:51,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 55 [2024-06-27 19:17:51,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 911 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 19:17:51,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:17:51,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 55 [2024-06-27 19:17:51,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:17:52,179 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (= v_~w~0_78 1) (not (= (ite (and (= v_~w~0_79 0) (= v_~r~0_61 0)) 1 0) 0))) InVars {~w~0=v_~w~0_79, ~r~0=v_~r~0_61} OutVars{~w~0=v_~w~0_78, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_61} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][92], [60#L721true, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, 18#L740true, 114#true, 20#L717-1true, writerThread1of1ForFork1InUse, Black: 73#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 94#true, Black: 78#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), Black: 83#(and (= ~w~0 1) (= ~y~0 0)), 49#L740true, Black: 84#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 82#(= ~y~0 0), 128#(= ~r~0 0), 103#true, Black: 92#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0)), Black: 100#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 97#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 80#true, Black: 106#(and (= ~x~0 0) (= ~w~0 1)), Black: 110#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 107#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 123#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 117#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0)), readerThread1of1ForFork3InUse]) [2024-06-27 19:17:52,179 INFO L294 olderBase$Statistics]: this new event has 36 ancestors and is cut-off event [2024-06-27 19:17:52,179 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2024-06-27 19:17:52,180 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2024-06-27 19:17:52,180 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2024-06-27 19:17:52,209 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (= v_~w~0_78 1) (not (= (ite (and (= v_~w~0_79 0) (= v_~r~0_61 0)) 1 0) 0))) InVars {~w~0=v_~w~0_79, ~r~0=v_~r~0_61} OutVars{~w~0=v_~w~0_78, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_61} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][92], [60#L721true, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, 18#L740true, 114#true, 20#L717-1true, writerThread1of1ForFork1InUse, Black: 73#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 94#true, Black: 78#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), Black: 83#(and (= ~w~0 1) (= ~y~0 0)), Black: 84#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 82#(= ~y~0 0), 128#(= ~r~0 0), 103#true, Black: 92#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0)), Black: 100#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 97#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 14#readerEXITtrue, 80#true, Black: 106#(and (= ~x~0 0) (= ~w~0 1)), Black: 110#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 107#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 123#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 117#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0)), readerThread1of1ForFork3InUse]) [2024-06-27 19:17:52,209 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2024-06-27 19:17:52,209 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-27 19:17:52,209 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-27 19:17:52,209 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-27 19:17:52,211 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (= v_~w~0_78 1) (not (= (ite (and (= v_~w~0_79 0) (= v_~r~0_61 0)) 1 0) 0))) InVars {~w~0=v_~w~0_79, ~r~0=v_~r~0_61} OutVars{~w~0=v_~w~0_78, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_61} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][92], [60#L721true, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, 114#true, 20#L717-1true, writerThread1of1ForFork1InUse, Black: 73#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 94#true, Black: 78#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), Black: 83#(and (= ~w~0 1) (= ~y~0 0)), 49#L740true, Black: 84#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 82#(= ~y~0 0), 128#(= ~r~0 0), 103#true, Black: 92#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0)), 26#readerEXITtrue, Black: 100#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 97#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 80#true, Black: 106#(and (= ~x~0 0) (= ~w~0 1)), Black: 110#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 107#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 123#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 117#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0)), readerThread1of1ForFork3InUse]) [2024-06-27 19:17:52,211 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2024-06-27 19:17:52,211 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-27 19:17:52,211 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-27 19:17:52,211 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2024-06-27 19:17:52,232 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([241] L717-->L717-1: Formula: (and (= v_~w~0_78 1) (not (= (ite (and (= v_~w~0_79 0) (= v_~r~0_61 0)) 1 0) 0))) InVars {~w~0=v_~w~0_79, ~r~0=v_~r~0_61} OutVars{~w~0=v_~w~0_78, writerThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_~cond#1_1|, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1_1|, ~r~0=v_~r~0_61} AuxVars[] AssignedVars[~w~0, writerThread1of1ForFork0_assume_abort_if_not_#in~cond#1, writerThread1of1ForFork0_assume_abort_if_not_~cond#1][92], [60#L721true, readerThread1of1ForFork2InUse, writerThread1of1ForFork0InUse, 114#true, 20#L717-1true, writerThread1of1ForFork1InUse, Black: 73#(and (= ~x~0 0) (= ~y~0 0) (= ~w~0 0)), 94#true, Black: 78#(and (= ~x~0 0) (= ~w~0 1) (= ~y~0 0)), Black: 83#(and (= ~w~0 1) (= ~y~0 0)), Black: 84#(and (= ~w~0 1) (= ~y~0 0) (= 3 ~x~0)), Black: 82#(= ~y~0 0), 128#(= ~r~0 0), 103#true, Black: 92#(and (= ~y~0 0) (= 3 ~x~0) (= ~w~0 0)), 26#readerEXITtrue, Black: 100#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~y~0 0) (= ~w~0 0)), Black: 97#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 0)), 14#readerEXITtrue, 80#true, Black: 106#(and (= ~x~0 0) (= ~w~0 1)), Black: 110#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 107#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1)), 31#ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANTtrue, Black: 123#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0) (= ~w~0 1) (= ~y~0 0)), Black: 117#(and (= ~x~0 0) (= |readerThread1of1ForFork2_~l~0#1| 0)), readerThread1of1ForFork3InUse]) [2024-06-27 19:17:52,233 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2024-06-27 19:17:52,233 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-27 19:17:52,233 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-27 19:17:52,233 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2024-06-27 19:17:52,258 INFO L124 PetriNetUnfolderBase]: 6894/12602 cut-off events. [2024-06-27 19:17:52,259 INFO L125 PetriNetUnfolderBase]: For 83584/85528 co-relation queries the response was YES. [2024-06-27 19:17:52,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47527 conditions, 12602 events. 6894/12602 cut-off events. For 83584/85528 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 103359 event pairs, 2376 based on Foata normal form. 703/12692 useless extension candidates. Maximal degree in co-relation 47498. Up to 4120 conditions per place. [2024-06-27 19:17:52,342 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 61 selfloop transitions, 15 changer transitions 0/125 dead transitions. [2024-06-27 19:17:52,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 125 transitions, 1018 flow [2024-06-27 19:17:52,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:17:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:17:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-06-27 19:17:52,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2024-06-27 19:17:52,345 INFO L175 Difference]: Start difference. First operand has 89 places, 103 transitions, 911 flow. Second operand 4 states and 164 transitions. [2024-06-27 19:17:52,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 125 transitions, 1018 flow [2024-06-27 19:17:52,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 125 transitions, 954 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 19:17:52,434 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 796 flow [2024-06-27 19:17:52,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=796, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2024-06-27 19:17:52,434 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 33 predicate places. [2024-06-27 19:17:52,435 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 796 flow [2024-06-27 19:17:52,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 19:17:52,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:17:52,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:17:52,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:17:52,435 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:17:52,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:17:52,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1542756500, now seen corresponding path program 1 times [2024-06-27 19:17:52,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:17:52,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525578361] [2024-06-27 19:17:52,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:17:52,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:17:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:17:52,480 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 19:17:52,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:17:52,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525578361] [2024-06-27 19:17:52,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525578361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:17:52,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:17:52,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:17:52,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586866616] [2024-06-27 19:17:52,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:17:52,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:17:52,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:17:52,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:17:52,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:17:52,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-27 19:17:52,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 796 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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 19:17:52,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:17:52,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-27 19:17:52,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:17:54,751 INFO L124 PetriNetUnfolderBase]: 16080/24925 cut-off events. [2024-06-27 19:17:54,751 INFO L125 PetriNetUnfolderBase]: For 144284/144290 co-relation queries the response was YES. [2024-06-27 19:17:54,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95964 conditions, 24925 events. 16080/24925 cut-off events. For 144284/144290 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 172839 event pairs, 2297 based on Foata normal form. 468/25290 useless extension candidates. Maximal degree in co-relation 95932. Up to 9441 conditions per place. [2024-06-27 19:17:54,932 INFO L140 encePairwiseOnDemand]: 41/55 looper letters, 166 selfloop transitions, 38 changer transitions 0/212 dead transitions. [2024-06-27 19:17:54,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 212 transitions, 2018 flow [2024-06-27 19:17:54,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:17:54,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:17:54,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-06-27 19:17:54,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.693939393939394 [2024-06-27 19:17:54,934 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 796 flow. Second operand 6 states and 229 transitions. [2024-06-27 19:17:54,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 212 transitions, 2018 flow [2024-06-27 19:17:55,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 212 transitions, 1998 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-06-27 19:17:55,172 INFO L231 Difference]: Finished difference. Result has 100 places, 112 transitions, 1276 flow [2024-06-27 19:17:55,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1276, PETRI_PLACES=100, PETRI_TRANSITIONS=112} [2024-06-27 19:17:55,173 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2024-06-27 19:17:55,173 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 112 transitions, 1276 flow [2024-06-27 19:17:55,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 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 19:17:55,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:17:55,174 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 19:17:55,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:17:55,174 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:17:55,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:17:55,174 INFO L85 PathProgramCache]: Analyzing trace with hash -250988446, now seen corresponding path program 1 times [2024-06-27 19:17:55,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:17:55,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914387336] [2024-06-27 19:17:55,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:17:55,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:17:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:17:55,217 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 19:17:55,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:17:55,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914387336] [2024-06-27 19:17:55,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914387336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:17:55,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:17:55,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:17:55,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441155239] [2024-06-27 19:17:55,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:17:55,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:17:55,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:17:55,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:17:55,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:17:55,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-06-27 19:17:55,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 112 transitions, 1276 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 19:17:55,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:17:55,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-06-27 19:17:55,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:17:57,236 INFO L124 PetriNetUnfolderBase]: 14991/23653 cut-off events. [2024-06-27 19:17:57,236 INFO L125 PetriNetUnfolderBase]: For 164972/165092 co-relation queries the response was YES. [2024-06-27 19:17:57,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100008 conditions, 23653 events. 14991/23653 cut-off events. For 164972/165092 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 166715 event pairs, 6181 based on Foata normal form. 82/23550 useless extension candidates. Maximal degree in co-relation 99971. Up to 20163 conditions per place. [2024-06-27 19:17:57,439 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 128 selfloop transitions, 12 changer transitions 0/153 dead transitions. [2024-06-27 19:17:57,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 153 transitions, 1772 flow [2024-06-27 19:17:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:17:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:17:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-06-27 19:17:57,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745454545454546 [2024-06-27 19:17:57,441 INFO L175 Difference]: Start difference. First operand has 100 places, 112 transitions, 1276 flow. Second operand 5 states and 158 transitions. [2024-06-27 19:17:57,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 153 transitions, 1772 flow [2024-06-27 19:17:57,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 153 transitions, 1684 flow, removed 37 selfloop flow, removed 1 redundant places. [2024-06-27 19:17:57,890 INFO L231 Difference]: Finished difference. Result has 104 places, 114 transitions, 1246 flow [2024-06-27 19:17:57,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1246, PETRI_PLACES=104, PETRI_TRANSITIONS=114} [2024-06-27 19:17:57,891 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 46 predicate places. [2024-06-27 19:17:57,891 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 114 transitions, 1246 flow [2024-06-27 19:17:57,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 19:17:57,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:17:57,892 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 19:17:57,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:17:57,892 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:17:57,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:17:57,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1761621262, now seen corresponding path program 1 times [2024-06-27 19:17:57,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:17:57,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441828153] [2024-06-27 19:17:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:17:57,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:17:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:17:57,940 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 19:17:57,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:17:57,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441828153] [2024-06-27 19:17:57,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441828153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:17:57,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:17:57,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:17:57,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132651466] [2024-06-27 19:17:57,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:17:57,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:17:57,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:17:57,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:17:57,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:17:57,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 55 [2024-06-27 19:17:57,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 114 transitions, 1246 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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 19:17:57,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:17:57,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 55 [2024-06-27 19:17:57,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:00,225 INFO L124 PetriNetUnfolderBase]: 13836/22231 cut-off events. [2024-06-27 19:18:00,225 INFO L125 PetriNetUnfolderBase]: For 152311/152661 co-relation queries the response was YES. [2024-06-27 19:18:00,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93316 conditions, 22231 events. 13836/22231 cut-off events. For 152311/152661 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 162161 event pairs, 6143 based on Foata normal form. 88/21971 useless extension candidates. Maximal degree in co-relation 93277. Up to 18935 conditions per place. [2024-06-27 19:18:00,393 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 130 selfloop transitions, 17 changer transitions 0/167 dead transitions. [2024-06-27 19:18:00,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 167 transitions, 1800 flow [2024-06-27 19:18:00,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:18:00,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:18:00,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-27 19:18:00,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484848484848485 [2024-06-27 19:18:00,395 INFO L175 Difference]: Start difference. First operand has 104 places, 114 transitions, 1246 flow. Second operand 6 states and 181 transitions. [2024-06-27 19:18:00,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 167 transitions, 1800 flow [2024-06-27 19:18:00,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 167 transitions, 1750 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 19:18:00,890 INFO L231 Difference]: Finished difference. Result has 107 places, 119 transitions, 1294 flow [2024-06-27 19:18:00,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1294, PETRI_PLACES=107, PETRI_TRANSITIONS=119} [2024-06-27 19:18:00,890 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 49 predicate places. [2024-06-27 19:18:00,891 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 119 transitions, 1294 flow [2024-06-27 19:18:00,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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 19:18:00,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:00,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:00,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:18:00,891 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:18:00,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:00,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1760173171, now seen corresponding path program 1 times [2024-06-27 19:18:00,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:00,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784639481] [2024-06-27 19:18:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:00,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:00,942 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 19:18:00,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:00,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784639481] [2024-06-27 19:18:00,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784639481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:00,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:00,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:18:00,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998603180] [2024-06-27 19:18:00,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:00,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:18:00,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:00,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:18:00,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:18:00,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-27 19:18:00,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 119 transitions, 1294 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:00,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:00,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-27 19:18:00,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:04,072 INFO L124 PetriNetUnfolderBase]: 21872/33555 cut-off events. [2024-06-27 19:18:04,072 INFO L125 PetriNetUnfolderBase]: For 232258/232416 co-relation queries the response was YES. [2024-06-27 19:18:04,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139653 conditions, 33555 events. 21872/33555 cut-off events. For 232258/232416 co-relation queries the response was YES. Maximal size of possible extension queue 1445. Compared 240379 event pairs, 5396 based on Foata normal form. 392/33775 useless extension candidates. Maximal degree in co-relation 139613. Up to 16003 conditions per place. [2024-06-27 19:18:04,703 INFO L140 encePairwiseOnDemand]: 41/55 looper letters, 267 selfloop transitions, 59 changer transitions 0/336 dead transitions. [2024-06-27 19:18:04,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 336 transitions, 3268 flow [2024-06-27 19:18:04,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 19:18:04,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 19:18:04,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 460 transitions. [2024-06-27 19:18:04,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2024-06-27 19:18:04,708 INFO L175 Difference]: Start difference. First operand has 107 places, 119 transitions, 1294 flow. Second operand 15 states and 460 transitions. [2024-06-27 19:18:04,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 336 transitions, 3268 flow [2024-06-27 19:18:05,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 336 transitions, 3246 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-06-27 19:18:05,113 INFO L231 Difference]: Finished difference. Result has 125 places, 137 transitions, 1764 flow [2024-06-27 19:18:05,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1764, PETRI_PLACES=125, PETRI_TRANSITIONS=137} [2024-06-27 19:18:05,113 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 67 predicate places. [2024-06-27 19:18:05,113 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 137 transitions, 1764 flow [2024-06-27 19:18:05,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:05,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:05,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:05,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:18:05,114 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:18:05,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:05,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1269204984, now seen corresponding path program 1 times [2024-06-27 19:18:05,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:05,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64151720] [2024-06-27 19:18:05,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:05,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:05,163 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 19:18:05,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:05,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64151720] [2024-06-27 19:18:05,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64151720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:05,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:05,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:18:05,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249282991] [2024-06-27 19:18:05,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:05,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:18:05,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:05,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:18:05,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:18:05,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-27 19:18:05,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 137 transitions, 1764 flow. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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 19:18:05,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:05,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-27 19:18:05,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:09,111 INFO L124 PetriNetUnfolderBase]: 23800/36635 cut-off events. [2024-06-27 19:18:09,112 INFO L125 PetriNetUnfolderBase]: For 311882/312044 co-relation queries the response was YES. [2024-06-27 19:18:09,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163094 conditions, 36635 events. 23800/36635 cut-off events. For 311882/312044 co-relation queries the response was YES. Maximal size of possible extension queue 1618. Compared 268241 event pairs, 5439 based on Foata normal form. 392/36839 useless extension candidates. Maximal degree in co-relation 163048. Up to 16003 conditions per place. [2024-06-27 19:18:09,457 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 252 selfloop transitions, 53 changer transitions 0/315 dead transitions. [2024-06-27 19:18:09,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 315 transitions, 3658 flow [2024-06-27 19:18:09,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:18:09,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:18:09,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 377 transitions. [2024-06-27 19:18:09,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5712121212121212 [2024-06-27 19:18:09,459 INFO L175 Difference]: Start difference. First operand has 125 places, 137 transitions, 1764 flow. Second operand 12 states and 377 transitions. [2024-06-27 19:18:09,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 315 transitions, 3658 flow [2024-06-27 19:18:10,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 315 transitions, 3499 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-27 19:18:10,466 INFO L231 Difference]: Finished difference. Result has 129 places, 150 transitions, 1987 flow [2024-06-27 19:18:10,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1987, PETRI_PLACES=129, PETRI_TRANSITIONS=150} [2024-06-27 19:18:10,468 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 71 predicate places. [2024-06-27 19:18:10,468 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 150 transitions, 1987 flow [2024-06-27 19:18:10,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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 19:18:10,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:10,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:10,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:18:10,473 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:18:10,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:10,473 INFO L85 PathProgramCache]: Analyzing trace with hash 712447058, now seen corresponding path program 1 times [2024-06-27 19:18:10,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:10,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124654694] [2024-06-27 19:18:10,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:10,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:10,588 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 19:18:10,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:10,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124654694] [2024-06-27 19:18:10,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124654694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:10,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:10,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:18:10,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487585002] [2024-06-27 19:18:10,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:10,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:18:10,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:10,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:18:10,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:18:10,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-27 19:18:10,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 150 transitions, 1987 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 19:18:10,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:10,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-27 19:18:10,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:14,274 INFO L124 PetriNetUnfolderBase]: 23813/36280 cut-off events. [2024-06-27 19:18:14,274 INFO L125 PetriNetUnfolderBase]: For 354024/354164 co-relation queries the response was YES. [2024-06-27 19:18:14,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167222 conditions, 36280 events. 23813/36280 cut-off events. For 354024/354164 co-relation queries the response was YES. Maximal size of possible extension queue 1582. Compared 263197 event pairs, 3565 based on Foata normal form. 516/36528 useless extension candidates. Maximal degree in co-relation 167172. Up to 16842 conditions per place. [2024-06-27 19:18:14,631 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 173 selfloop transitions, 62 changer transitions 6/253 dead transitions. [2024-06-27 19:18:14,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 253 transitions, 3286 flow [2024-06-27 19:18:14,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:18:14,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:18:14,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2024-06-27 19:18:14,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-06-27 19:18:14,633 INFO L175 Difference]: Start difference. First operand has 129 places, 150 transitions, 1987 flow. Second operand 6 states and 213 transitions. [2024-06-27 19:18:14,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 253 transitions, 3286 flow [2024-06-27 19:18:15,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 253 transitions, 3174 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:18:15,899 INFO L231 Difference]: Finished difference. Result has 129 places, 156 transitions, 2245 flow [2024-06-27 19:18:15,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1899, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2245, PETRI_PLACES=129, PETRI_TRANSITIONS=156} [2024-06-27 19:18:15,900 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 71 predicate places. [2024-06-27 19:18:15,900 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 156 transitions, 2245 flow [2024-06-27 19:18:15,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 19:18:15,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:15,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:15,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:18:15,901 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:18:15,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:15,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1401074127, now seen corresponding path program 1 times [2024-06-27 19:18:15,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:15,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829571154] [2024-06-27 19:18:15,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:15,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:15,952 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 19:18:15,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:15,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829571154] [2024-06-27 19:18:15,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829571154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:15,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:15,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:18:15,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079760727] [2024-06-27 19:18:15,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:15,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:18:15,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:15,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:18:15,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:18:15,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-27 19:18:15,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 156 transitions, 2245 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 19:18:15,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:15,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-27 19:18:15,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:19,498 INFO L124 PetriNetUnfolderBase]: 22020/33685 cut-off events. [2024-06-27 19:18:19,498 INFO L125 PetriNetUnfolderBase]: For 368011/368301 co-relation queries the response was YES. [2024-06-27 19:18:19,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165265 conditions, 33685 events. 22020/33685 cut-off events. For 368011/368301 co-relation queries the response was YES. Maximal size of possible extension queue 1499. Compared 243744 event pairs, 9066 based on Foata normal form. 154/33523 useless extension candidates. Maximal degree in co-relation 165213. Up to 30502 conditions per place. [2024-06-27 19:18:20,139 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 187 selfloop transitions, 35 changer transitions 0/234 dead transitions. [2024-06-27 19:18:20,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 234 transitions, 3091 flow [2024-06-27 19:18:20,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:20,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:20,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 229 transitions. [2024-06-27 19:18:20,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204545454545455 [2024-06-27 19:18:20,150 INFO L175 Difference]: Start difference. First operand has 129 places, 156 transitions, 2245 flow. Second operand 8 states and 229 transitions. [2024-06-27 19:18:20,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 234 transitions, 3091 flow [2024-06-27 19:18:21,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 234 transitions, 2907 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-27 19:18:21,610 INFO L231 Difference]: Finished difference. Result has 132 places, 161 transitions, 2234 flow [2024-06-27 19:18:21,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2234, PETRI_PLACES=132, PETRI_TRANSITIONS=161} [2024-06-27 19:18:21,612 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 74 predicate places. [2024-06-27 19:18:21,612 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 161 transitions, 2234 flow [2024-06-27 19:18:21,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 19:18:21,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:21,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:21,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:18:21,613 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:18:21,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:21,613 INFO L85 PathProgramCache]: Analyzing trace with hash -856519342, now seen corresponding path program 1 times [2024-06-27 19:18:21,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:21,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631297222] [2024-06-27 19:18:21,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:21,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:21,719 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 19:18:21,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:21,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631297222] [2024-06-27 19:18:21,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631297222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:21,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:21,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:18:21,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801737448] [2024-06-27 19:18:21,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:21,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:18:21,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:21,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:18:21,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:18:21,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-27 19:18:21,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 161 transitions, 2234 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 19:18:21,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:21,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-27 19:18:21,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:25,498 INFO L124 PetriNetUnfolderBase]: 23110/35329 cut-off events. [2024-06-27 19:18:25,498 INFO L125 PetriNetUnfolderBase]: For 363060/363074 co-relation queries the response was YES. [2024-06-27 19:18:25,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167308 conditions, 35329 events. 23110/35329 cut-off events. For 363060/363074 co-relation queries the response was YES. Maximal size of possible extension queue 1640. Compared 257953 event pairs, 5787 based on Foata normal form. 288/35367 useless extension candidates. Maximal degree in co-relation 167255. Up to 18960 conditions per place. [2024-06-27 19:18:25,833 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 217 selfloop transitions, 44 changer transitions 0/273 dead transitions. [2024-06-27 19:18:25,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 273 transitions, 3675 flow [2024-06-27 19:18:25,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:18:25,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:18:25,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 214 transitions. [2024-06-27 19:18:25,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6484848484848484 [2024-06-27 19:18:25,834 INFO L175 Difference]: Start difference. First operand has 132 places, 161 transitions, 2234 flow. Second operand 6 states and 214 transitions. [2024-06-27 19:18:25,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 273 transitions, 3675 flow [2024-06-27 19:18:26,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 273 transitions, 3625 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 19:18:26,978 INFO L231 Difference]: Finished difference. Result has 135 places, 171 transitions, 2564 flow [2024-06-27 19:18:26,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2564, PETRI_PLACES=135, PETRI_TRANSITIONS=171} [2024-06-27 19:18:26,978 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 77 predicate places. [2024-06-27 19:18:26,979 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 171 transitions, 2564 flow [2024-06-27 19:18:26,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 19:18:26,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:26,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:26,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:18:26,979 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:18:26,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:26,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1047687588, now seen corresponding path program 2 times [2024-06-27 19:18:26,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:26,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323454939] [2024-06-27 19:18:26,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:26,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:27,028 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 19:18:27,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:27,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323454939] [2024-06-27 19:18:27,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323454939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:27,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:27,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:18:27,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435630823] [2024-06-27 19:18:27,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:27,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:18:27,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:27,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:18:27,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:18:27,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-27 19:18:27,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 171 transitions, 2564 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 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 19:18:27,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:27,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-27 19:18:27,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand