./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/peterson.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/peterson.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i ./goblint.2024-05-21_14-57-05.files/protection/peterson.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 14:05:30,024 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:05:30,123 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:05:30,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:05:30,128 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:05:30,151 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:05:30,152 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:05:30,152 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:05:30,153 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:05:30,156 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:05:30,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:05:30,156 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:05:30,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:05:30,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:05:30,158 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:05:30,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:05:30,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:05:30,159 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:05:30,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:05:30,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:05:30,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:05:30,160 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:05:30,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:05:30,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:05:30,160 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:05:30,161 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:05:30,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:05:30,161 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:05:30,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:05:30,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:05:30,163 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:05:30,163 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:05:30,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:05:30,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:05:30,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:05:30,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:05:30,164 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:05:30,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:05:30,164 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:05:30,164 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:05:30,164 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:05:30,165 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:05:30,165 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:05:30,165 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:05:30,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:05:30,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:05:30,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:05:30,410 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:05:30,411 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:05:30,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2024-06-04 14:05:31,432 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:05:31,648 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:05:31,648 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2024-06-04 14:05:31,664 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab5f580d/8c1c2c97e55d488ca81cd146fa053d2b/FLAGa7b501eec [2024-06-04 14:05:31,676 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eab5f580d/8c1c2c97e55d488ca81cd146fa053d2b [2024-06-04 14:05:31,678 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:05:31,678 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:05:31,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/peterson.yml/witness.yml [2024-06-04 14:05:31,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:05:31,768 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:05:31,769 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:05:31,769 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:05:31,773 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:05:31,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:05:31" (1/2) ... [2024-06-04 14:05:31,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@876349a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:31, skipping insertion in model container [2024-06-04 14:05:31,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:05:31" (1/2) ... [2024-06-04 14:05:31,775 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@d66c525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:05:31, skipping insertion in model container [2024-06-04 14:05:31,775 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:31" (2/2) ... [2024-06-04 14:05:31,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@876349a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:31, skipping insertion in model container [2024-06-04 14:05:31,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:31" (2/2) ... [2024-06-04 14:05:31,776 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:05:31,804 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:05:31,806 INFO L97 edCorrectnessWitness]: Location invariant before [L762-L762] (((! multithreaded || ((0 <= turn && turn <= 1) && (turn == 0 || turn == 1))) && (! multithreaded || ((0 <= flag2 && flag2 <= 1) && (flag2 == 0 || flag2 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= flag1 && flag1 <= 1) && (flag1 == 0 || flag1 == 1))) [2024-06-04 14:05:31,806 INFO L97 edCorrectnessWitness]: Location invariant before [L763-L763] (((! multithreaded || ((0 <= turn && turn <= 1) && (turn == 0 || turn == 1))) && (! multithreaded || ((0 <= flag2 && flag2 <= 1) && (flag2 == 0 || flag2 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= flag1 && flag1 <= 1) && (flag1 == 0 || flag1 == 1))) [2024-06-04 14:05:31,806 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:05:31,806 INFO L106 edCorrectnessWitness]: ghost_update [L761-L761] multithreaded = 1; [2024-06-04 14:05:31,846 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:05:32,107 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:05:32,117 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:05:32,182 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:05:32,213 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:05:32,215 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:32 WrapperNode [2024-06-04 14:05:32,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:05:32,216 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:05:32,217 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:05:32,217 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:05:32,222 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 04.06 02:05:32" (1/1) ... [2024-06-04 14:05:32,251 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 04.06 02:05:32" (1/1) ... [2024-06-04 14:05:32,279 INFO L138 Inliner]: procedures = 169, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 103 [2024-06-04 14:05:32,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:05:32,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:05:32,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:05:32,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:05:32,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:32" (1/1) ... [2024-06-04 14:05:32,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:32" (1/1) ... [2024-06-04 14:05:32,297 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:32" (1/1) ... [2024-06-04 14:05:32,322 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]. [2024-06-04 14:05:32,324 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:32" (1/1) ... [2024-06-04 14:05:32,324 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:32" (1/1) ... [2024-06-04 14:05:32,333 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:32" (1/1) ... [2024-06-04 14:05:32,336 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:32" (1/1) ... [2024-06-04 14:05:32,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:32" (1/1) ... [2024-06-04 14:05:32,343 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:32" (1/1) ... [2024-06-04 14:05:32,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:05:32,352 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:05:32,352 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:05:32,352 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:05:32,353 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:32" (1/1) ... [2024-06-04 14:05:32,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:05:32,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:05:32,380 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) [2024-06-04 14:05:32,393 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 [2024-06-04 14:05:32,411 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-06-04 14:05:32,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-06-04 14:05:32,412 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-06-04 14:05:32,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-06-04 14:05:32,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:05:32,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:05:32,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:05:32,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:05:32,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:05:32,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:05:32,415 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 14:05:32,497 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:05:32,498 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:05:32,622 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:05:32,623 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:05:32,696 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:05:32,700 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-04 14:05:32,700 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:05:32 BoogieIcfgContainer [2024-06-04 14:05:32,700 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:05:32,702 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:05:32,702 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:05:32,705 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:05:32,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:05:31" (1/4) ... [2024-06-04 14:05:32,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb62001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:05:32, skipping insertion in model container [2024-06-04 14:05:32,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:05:31" (2/4) ... [2024-06-04 14:05:32,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb62001 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:05:32, skipping insertion in model container [2024-06-04 14:05:32,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:05:32" (3/4) ... [2024-06-04 14:05:32,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb62001 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:05:32, skipping insertion in model container [2024-06-04 14:05:32,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:05:32" (4/4) ... [2024-06-04 14:05:32,708 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson.i [2024-06-04 14:05:32,723 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:05:32,724 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 14:05:32,724 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:05:32,774 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-04 14:05:32,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 38 transitions, 90 flow [2024-06-04 14:05:32,835 INFO L124 PetriNetUnfolderBase]: 2/36 cut-off events. [2024-06-04 14:05:32,838 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-04 14:05:32,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 2/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-06-04 14:05:32,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 38 transitions, 90 flow [2024-06-04 14:05:32,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 34 transitions, 77 flow [2024-06-04 14:05:32,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:05:32,859 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;@f3183a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:05:32,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 14:05:32,866 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:05:32,867 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-04 14:05:32,867 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:05:32,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:32,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 14:05:32,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:32,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:32,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2026818422, now seen corresponding path program 1 times [2024-06-04 14:05:32,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:32,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97722813] [2024-06-04 14:05:32,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:32,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:33,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:33,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:33,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97722813] [2024-06-04 14:05:33,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97722813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:33,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:33,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 14:05:33,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568018597] [2024-06-04 14:05:33,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:33,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:05:33,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:33,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:05:33,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:05:33,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 38 [2024-06-04 14:05:33,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-06-04 14:05:33,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:33,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 38 [2024-06-04 14:05:33,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:33,346 INFO L124 PetriNetUnfolderBase]: 105/278 cut-off events. [2024-06-04 14:05:33,347 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-06-04 14:05:33,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 278 events. 105/278 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1295 event pairs, 50 based on Foata normal form. 1/257 useless extension candidates. Maximal degree in co-relation 441. Up to 168 conditions per place. [2024-06-04 14:05:33,350 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 21 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2024-06-04 14:05:33,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 140 flow [2024-06-04 14:05:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:05:33,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:05:33,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-04 14:05:33,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-06-04 14:05:33,376 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 77 flow. Second operand 3 states and 80 transitions. [2024-06-04 14:05:33,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 140 flow [2024-06-04 14:05:33,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 40 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-04 14:05:33,380 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 93 flow [2024-06-04 14:05:33,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2024-06-04 14:05:33,384 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2024-06-04 14:05:33,384 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 93 flow [2024-06-04 14:05:33,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-06-04 14:05:33,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:33,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:33,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:05:33,385 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:33,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:33,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2143230211, now seen corresponding path program 1 times [2024-06-04 14:05:33,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:33,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038348738] [2024-06-04 14:05:33,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:33,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:33,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:33,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038348738] [2024-06-04 14:05:33,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038348738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:33,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:33,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:05:33,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388705243] [2024-06-04 14:05:33,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:33,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:05:33,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:33,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:05:33,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:05:33,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-06-04 14:05:33,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-06-04 14:05:33,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:33,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-06-04 14:05:33,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:33,649 INFO L124 PetriNetUnfolderBase]: 121/291 cut-off events. [2024-06-04 14:05:33,650 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-06-04 14:05:33,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 291 events. 121/291 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1338 event pairs, 52 based on Foata normal form. 2/273 useless extension candidates. Maximal degree in co-relation 449. Up to 191 conditions per place. [2024-06-04 14:05:33,656 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 26 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2024-06-04 14:05:33,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 181 flow [2024-06-04 14:05:33,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:05:33,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:05:33,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-06-04 14:05:33,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6644736842105263 [2024-06-04 14:05:33,660 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 93 flow. Second operand 4 states and 101 transitions. [2024-06-04 14:05:33,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 181 flow [2024-06-04 14:05:33,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 14:05:33,663 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 117 flow [2024-06-04 14:05:33,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2024-06-04 14:05:33,664 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2024-06-04 14:05:33,664 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 117 flow [2024-06-04 14:05:33,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-06-04 14:05:33,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:33,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:33,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:05:33,666 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:33,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:33,672 INFO L85 PathProgramCache]: Analyzing trace with hash 2015628212, now seen corresponding path program 1 times [2024-06-04 14:05:33,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:33,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499820611] [2024-06-04 14:05:33,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:33,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:33,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:33,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499820611] [2024-06-04 14:05:33,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499820611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:33,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:33,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:05:33,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374288362] [2024-06-04 14:05:33,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:33,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:05:33,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:33,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:05:33,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:05:33,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-06-04 14:05:33,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:33,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:33,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-06-04 14:05:33,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:33,867 INFO L124 PetriNetUnfolderBase]: 143/322 cut-off events. [2024-06-04 14:05:33,867 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-06-04 14:05:33,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 322 events. 143/322 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1470 event pairs, 51 based on Foata normal form. 4/314 useless extension candidates. Maximal degree in co-relation 537. Up to 185 conditions per place. [2024-06-04 14:05:33,904 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 31 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2024-06-04 14:05:33,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 238 flow [2024-06-04 14:05:33,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:05:33,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:05:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-04 14:05:33,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-06-04 14:05:33,911 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 117 flow. Second operand 5 states and 120 transitions. [2024-06-04 14:05:33,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 238 flow [2024-06-04 14:05:33,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 229 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 14:05:33,914 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 141 flow [2024-06-04 14:05:33,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-04 14:05:33,915 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2024-06-04 14:05:33,936 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 141 flow [2024-06-04 14:05:33,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:33,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:33,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:33,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:05:33,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:33,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:33,937 INFO L85 PathProgramCache]: Analyzing trace with hash 88010942, now seen corresponding path program 1 times [2024-06-04 14:05:33,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:33,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915236413] [2024-06-04 14:05:33,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:33,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:34,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:34,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915236413] [2024-06-04 14:05:34,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915236413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:34,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:34,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:05:34,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056756534] [2024-06-04 14:05:34,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:34,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:05:34,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:34,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:05:34,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:05:34,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-06-04 14:05:34,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:34,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:34,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-06-04 14:05:34,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:34,129 INFO L124 PetriNetUnfolderBase]: 125/295 cut-off events. [2024-06-04 14:05:34,129 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2024-06-04 14:05:34,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 295 events. 125/295 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1320 event pairs, 46 based on Foata normal form. 1/284 useless extension candidates. Maximal degree in co-relation 580. Up to 200 conditions per place. [2024-06-04 14:05:34,131 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 26 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2024-06-04 14:05:34,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 47 transitions, 221 flow [2024-06-04 14:05:34,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:05:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:05:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-06-04 14:05:34,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6381578947368421 [2024-06-04 14:05:34,132 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 141 flow. Second operand 4 states and 97 transitions. [2024-06-04 14:05:34,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 47 transitions, 221 flow [2024-06-04 14:05:34,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 209 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-04 14:05:34,134 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 154 flow [2024-06-04 14:05:34,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-06-04 14:05:34,135 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2024-06-04 14:05:34,135 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 154 flow [2024-06-04 14:05:34,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:34,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:34,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:34,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 14:05:34,136 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:34,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:34,136 INFO L85 PathProgramCache]: Analyzing trace with hash -967459819, now seen corresponding path program 1 times [2024-06-04 14:05:34,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:34,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081588368] [2024-06-04 14:05:34,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:34,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:34,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:34,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:34,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081588368] [2024-06-04 14:05:34,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081588368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:34,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:34,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:05:34,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153215168] [2024-06-04 14:05:34,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:34,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:05:34,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:34,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:05:34,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:05:34,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-06-04 14:05:34,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-06-04 14:05:34,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:34,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-06-04 14:05:34,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:34,287 INFO L124 PetriNetUnfolderBase]: 143/317 cut-off events. [2024-06-04 14:05:34,287 INFO L125 PetriNetUnfolderBase]: For 370/385 co-relation queries the response was YES. [2024-06-04 14:05:34,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 317 events. 143/317 cut-off events. For 370/385 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1372 event pairs, 54 based on Foata normal form. 3/308 useless extension candidates. Maximal degree in co-relation 678. Up to 220 conditions per place. [2024-06-04 14:05:34,289 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 32 selfloop transitions, 10 changer transitions 0/56 dead transitions. [2024-06-04 14:05:34,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 56 transitions, 286 flow [2024-06-04 14:05:34,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:05:34,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:05:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-04 14:05:34,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6263157894736842 [2024-06-04 14:05:34,290 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 154 flow. Second operand 5 states and 119 transitions. [2024-06-04 14:05:34,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 56 transitions, 286 flow [2024-06-04 14:05:34,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 56 transitions, 277 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 14:05:34,292 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 190 flow [2024-06-04 14:05:34,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=190, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-06-04 14:05:34,293 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 11 predicate places. [2024-06-04 14:05:34,293 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 190 flow [2024-06-04 14:05:34,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-06-04 14:05:34,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:34,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:34,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 14:05:34,294 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:34,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:34,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1213753405, now seen corresponding path program 2 times [2024-06-04 14:05:34,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:34,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596701246] [2024-06-04 14:05:34,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:34,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:34,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:34,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596701246] [2024-06-04 14:05:34,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596701246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:34,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:34,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:05:34,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596829389] [2024-06-04 14:05:34,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:34,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:05:34,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:34,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:05:34,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:05:34,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-06-04 14:05:34,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-06-04 14:05:34,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:34,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-06-04 14:05:34,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:34,485 INFO L124 PetriNetUnfolderBase]: 142/321 cut-off events. [2024-06-04 14:05:34,485 INFO L125 PetriNetUnfolderBase]: For 555/568 co-relation queries the response was YES. [2024-06-04 14:05:34,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 321 events. 142/321 cut-off events. For 555/568 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1419 event pairs, 57 based on Foata normal form. 7/318 useless extension candidates. Maximal degree in co-relation 587. Up to 218 conditions per place. [2024-06-04 14:05:34,487 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 28 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2024-06-04 14:05:34,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 280 flow [2024-06-04 14:05:34,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:05:34,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:05:34,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-04 14:05:34,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-06-04 14:05:34,489 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 190 flow. Second operand 5 states and 115 transitions. [2024-06-04 14:05:34,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 280 flow [2024-06-04 14:05:34,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 270 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-04 14:05:34,492 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 205 flow [2024-06-04 14:05:34,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-04 14:05:34,495 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 15 predicate places. [2024-06-04 14:05:34,495 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 205 flow [2024-06-04 14:05:34,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-06-04 14:05:34,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:34,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:34,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 14:05:34,496 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:34,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:34,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1757601737, now seen corresponding path program 1 times [2024-06-04 14:05:34,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:34,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334339746] [2024-06-04 14:05:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:34,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:34,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:34,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:34,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334339746] [2024-06-04 14:05:34,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334339746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:34,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:34,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:05:34,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145548354] [2024-06-04 14:05:34,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:34,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:34,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:34,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:34,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:34,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:34,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2024-06-04 14:05:34,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:34,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:34,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:34,724 INFO L124 PetriNetUnfolderBase]: 195/457 cut-off events. [2024-06-04 14:05:34,724 INFO L125 PetriNetUnfolderBase]: For 900/914 co-relation queries the response was YES. [2024-06-04 14:05:34,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 457 events. 195/457 cut-off events. For 900/914 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2230 event pairs, 26 based on Foata normal form. 10/462 useless extension candidates. Maximal degree in co-relation 865. Up to 134 conditions per place. [2024-06-04 14:05:34,727 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 48 selfloop transitions, 12 changer transitions 2/75 dead transitions. [2024-06-04 14:05:34,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 75 transitions, 439 flow [2024-06-04 14:05:34,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-04 14:05:34,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-06-04 14:05:34,729 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 205 flow. Second operand 6 states and 144 transitions. [2024-06-04 14:05:34,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 75 transitions, 439 flow [2024-06-04 14:05:34,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 75 transitions, 412 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 14:05:34,733 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 235 flow [2024-06-04 14:05:34,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=235, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-06-04 14:05:34,734 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2024-06-04 14:05:34,734 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 235 flow [2024-06-04 14:05:34,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2024-06-04 14:05:34,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:34,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:34,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 14:05:34,736 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:34,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:34,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1026875080, now seen corresponding path program 1 times [2024-06-04 14:05:34,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:34,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691326167] [2024-06-04 14:05:34,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:34,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:34,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:34,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:34,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691326167] [2024-06-04 14:05:34,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691326167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:34,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:34,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:05:34,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364408478] [2024-06-04 14:05:34,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:34,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:34,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:34,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:34,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:34,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:34,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:34,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:34,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:34,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:34,946 INFO L124 PetriNetUnfolderBase]: 241/548 cut-off events. [2024-06-04 14:05:34,946 INFO L125 PetriNetUnfolderBase]: For 1492/1511 co-relation queries the response was YES. [2024-06-04 14:05:34,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1646 conditions, 548 events. 241/548 cut-off events. For 1492/1511 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2768 event pairs, 54 based on Foata normal form. 14/554 useless extension candidates. Maximal degree in co-relation 1213. Up to 178 conditions per place. [2024-06-04 14:05:34,951 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 43 selfloop transitions, 22 changer transitions 1/79 dead transitions. [2024-06-04 14:05:34,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 511 flow [2024-06-04 14:05:34,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:34,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:34,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-04 14:05:34,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-06-04 14:05:34,952 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 235 flow. Second operand 6 states and 144 transitions. [2024-06-04 14:05:34,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 511 flow [2024-06-04 14:05:34,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 501 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-04 14:05:34,956 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 356 flow [2024-06-04 14:05:34,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-06-04 14:05:34,959 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2024-06-04 14:05:34,959 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 356 flow [2024-06-04 14:05:34,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:34,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:34,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:34,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 14:05:34,960 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:34,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:34,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1964784294, now seen corresponding path program 2 times [2024-06-04 14:05:34,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:34,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913198052] [2024-06-04 14:05:34,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:34,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:35,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:35,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:35,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913198052] [2024-06-04 14:05:35,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913198052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:35,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:35,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:05:35,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648842922] [2024-06-04 14:05:35,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:35,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:35,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:35,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:35,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:35,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:35,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:35,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:35,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:35,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:35,174 INFO L124 PetriNetUnfolderBase]: 271/624 cut-off events. [2024-06-04 14:05:35,174 INFO L125 PetriNetUnfolderBase]: For 2385/2412 co-relation queries the response was YES. [2024-06-04 14:05:35,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2082 conditions, 624 events. 271/624 cut-off events. For 2385/2412 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3324 event pairs, 59 based on Foata normal form. 20/632 useless extension candidates. Maximal degree in co-relation 1609. Up to 185 conditions per place. [2024-06-04 14:05:35,180 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 44 selfloop transitions, 24 changer transitions 1/82 dead transitions. [2024-06-04 14:05:35,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 640 flow [2024-06-04 14:05:35,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:35,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-04 14:05:35,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-06-04 14:05:35,182 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 356 flow. Second operand 6 states and 142 transitions. [2024-06-04 14:05:35,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 640 flow [2024-06-04 14:05:35,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 626 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-06-04 14:05:35,188 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 439 flow [2024-06-04 14:05:35,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=439, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-06-04 14:05:35,189 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 32 predicate places. [2024-06-04 14:05:35,189 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 439 flow [2024-06-04 14:05:35,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:35,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:35,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:35,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 14:05:35,190 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:35,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:35,190 INFO L85 PathProgramCache]: Analyzing trace with hash -192236666, now seen corresponding path program 3 times [2024-06-04 14:05:35,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:35,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514537871] [2024-06-04 14:05:35,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:35,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:35,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:35,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:35,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514537871] [2024-06-04 14:05:35,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514537871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:35,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:35,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:05:35,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454622683] [2024-06-04 14:05:35,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:35,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:35,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:35,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:35,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:35,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:35,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 439 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:35,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:35,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:35,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:35,384 INFO L124 PetriNetUnfolderBase]: 265/619 cut-off events. [2024-06-04 14:05:35,384 INFO L125 PetriNetUnfolderBase]: For 2930/2959 co-relation queries the response was YES. [2024-06-04 14:05:35,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2132 conditions, 619 events. 265/619 cut-off events. For 2930/2959 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3280 event pairs, 46 based on Foata normal form. 12/623 useless extension candidates. Maximal degree in co-relation 1502. Up to 160 conditions per place. [2024-06-04 14:05:35,389 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 44 selfloop transitions, 21 changer transitions 2/80 dead transitions. [2024-06-04 14:05:35,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 80 transitions, 675 flow [2024-06-04 14:05:35,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:35,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:35,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-04 14:05:35,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2024-06-04 14:05:35,390 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 439 flow. Second operand 6 states and 141 transitions. [2024-06-04 14:05:35,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 80 transitions, 675 flow [2024-06-04 14:05:35,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 643 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-04 14:05:35,397 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 455 flow [2024-06-04 14:05:35,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=455, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2024-06-04 14:05:35,398 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2024-06-04 14:05:35,400 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 455 flow [2024-06-04 14:05:35,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:35,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:35,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:35,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 14:05:35,400 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:35,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:35,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1075714408, now seen corresponding path program 1 times [2024-06-04 14:05:35,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:35,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514981981] [2024-06-04 14:05:35,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:35,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:35,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:35,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:35,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514981981] [2024-06-04 14:05:35,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514981981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:35,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:35,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:05:35,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390833425] [2024-06-04 14:05:35,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:35,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:35,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:35,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:35,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:35,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:35,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 455 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-04 14:05:35,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:35,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:35,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:35,593 INFO L124 PetriNetUnfolderBase]: 259/606 cut-off events. [2024-06-04 14:05:35,593 INFO L125 PetriNetUnfolderBase]: For 3100/3123 co-relation queries the response was YES. [2024-06-04 14:05:35,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 606 events. 259/606 cut-off events. For 3100/3123 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3214 event pairs, 59 based on Foata normal form. 18/616 useless extension candidates. Maximal degree in co-relation 1616. Up to 182 conditions per place. [2024-06-04 14:05:35,597 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 42 selfloop transitions, 26 changer transitions 1/82 dead transitions. [2024-06-04 14:05:35,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 82 transitions, 699 flow [2024-06-04 14:05:35,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:35,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-04 14:05:35,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2024-06-04 14:05:35,599 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 455 flow. Second operand 6 states and 141 transitions. [2024-06-04 14:05:35,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 82 transitions, 699 flow [2024-06-04 14:05:35,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 82 transitions, 646 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-04 14:05:35,603 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 494 flow [2024-06-04 14:05:35,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=494, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2024-06-04 14:05:35,604 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 39 predicate places. [2024-06-04 14:05:35,604 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 494 flow [2024-06-04 14:05:35,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-04 14:05:35,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:35,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:35,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 14:05:35,605 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:35,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:35,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1664368100, now seen corresponding path program 2 times [2024-06-04 14:05:35,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:35,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342928852] [2024-06-04 14:05:35,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:35,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:35,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:35,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342928852] [2024-06-04 14:05:35,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342928852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:35,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:35,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:05:35,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665967214] [2024-06-04 14:05:35,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:35,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:35,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:35,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:35,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:35,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:35,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 494 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-04 14:05:35,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:35,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:35,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:35,779 INFO L124 PetriNetUnfolderBase]: 260/612 cut-off events. [2024-06-04 14:05:35,779 INFO L125 PetriNetUnfolderBase]: For 3536/3557 co-relation queries the response was YES. [2024-06-04 14:05:35,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2200 conditions, 612 events. 260/612 cut-off events. For 3536/3557 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3211 event pairs, 54 based on Foata normal form. 10/618 useless extension candidates. Maximal degree in co-relation 1567. Up to 160 conditions per place. [2024-06-04 14:05:35,784 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 45 selfloop transitions, 23 changer transitions 2/83 dead transitions. [2024-06-04 14:05:35,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 83 transitions, 747 flow [2024-06-04 14:05:35,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:35,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-04 14:05:35,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6140350877192983 [2024-06-04 14:05:35,786 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 494 flow. Second operand 6 states and 140 transitions. [2024-06-04 14:05:35,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 83 transitions, 747 flow [2024-06-04 14:05:35,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 83 transitions, 679 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-04 14:05:35,791 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 520 flow [2024-06-04 14:05:35,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=520, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2024-06-04 14:05:35,792 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 41 predicate places. [2024-06-04 14:05:35,792 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 520 flow [2024-06-04 14:05:35,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-04 14:05:35,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:35,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:35,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 14:05:35,793 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:35,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:35,794 INFO L85 PathProgramCache]: Analyzing trace with hash -590652925, now seen corresponding path program 1 times [2024-06-04 14:05:35,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:35,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367636968] [2024-06-04 14:05:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:35,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:35,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:35,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:35,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367636968] [2024-06-04 14:05:35,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367636968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:35,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:35,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:05:35,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834559470] [2024-06-04 14:05:35,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:35,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:35,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:35,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:35,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:35,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:35,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 520 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:35,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:35,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:35,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:35,994 INFO L124 PetriNetUnfolderBase]: 285/681 cut-off events. [2024-06-04 14:05:35,994 INFO L125 PetriNetUnfolderBase]: For 4345/4364 co-relation queries the response was YES. [2024-06-04 14:05:35,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 681 events. 285/681 cut-off events. For 4345/4364 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3858 event pairs, 83 based on Foata normal form. 11/688 useless extension candidates. Maximal degree in co-relation 1904. Up to 213 conditions per place. [2024-06-04 14:05:35,998 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 56 selfloop transitions, 21 changer transitions 2/92 dead transitions. [2024-06-04 14:05:35,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 92 transitions, 837 flow [2024-06-04 14:05:35,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:35,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:35,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-04 14:05:35,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-06-04 14:05:36,000 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 520 flow. Second operand 6 states and 138 transitions. [2024-06-04 14:05:36,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 92 transitions, 837 flow [2024-06-04 14:05:36,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 92 transitions, 788 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 14:05:36,005 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 577 flow [2024-06-04 14:05:36,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=577, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-06-04 14:05:36,006 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 45 predicate places. [2024-06-04 14:05:36,007 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 577 flow [2024-06-04 14:05:36,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:05:36,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:36,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:36,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 14:05:36,007 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:36,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:36,008 INFO L85 PathProgramCache]: Analyzing trace with hash 968445057, now seen corresponding path program 1 times [2024-06-04 14:05:36,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:36,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550288209] [2024-06-04 14:05:36,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:36,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:36,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:36,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550288209] [2024-06-04 14:05:36,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550288209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:36,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:36,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:05:36,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799894591] [2024-06-04 14:05:36,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:36,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:36,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:36,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:36,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:36,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:36,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 577 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-04 14:05:36,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:36,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:36,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:36,198 INFO L124 PetriNetUnfolderBase]: 306/735 cut-off events. [2024-06-04 14:05:36,198 INFO L125 PetriNetUnfolderBase]: For 5523/5543 co-relation queries the response was YES. [2024-06-04 14:05:36,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2731 conditions, 735 events. 306/735 cut-off events. For 5523/5543 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4258 event pairs, 39 based on Foata normal form. 16/744 useless extension candidates. Maximal degree in co-relation 2543. Up to 211 conditions per place. [2024-06-04 14:05:36,203 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 62 selfloop transitions, 22 changer transitions 2/99 dead transitions. [2024-06-04 14:05:36,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 99 transitions, 914 flow [2024-06-04 14:05:36,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:36,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:36,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-04 14:05:36,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-06-04 14:05:36,204 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 577 flow. Second operand 6 states and 142 transitions. [2024-06-04 14:05:36,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 99 transitions, 914 flow [2024-06-04 14:05:36,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 99 transitions, 883 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-04 14:05:36,211 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 659 flow [2024-06-04 14:05:36,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=659, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2024-06-04 14:05:36,212 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 53 predicate places. [2024-06-04 14:05:36,212 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 659 flow [2024-06-04 14:05:36,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-04 14:05:36,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:36,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:36,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 14:05:36,213 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:36,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:36,214 INFO L85 PathProgramCache]: Analyzing trace with hash -207594140, now seen corresponding path program 1 times [2024-06-04 14:05:36,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:36,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664053360] [2024-06-04 14:05:36,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:36,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:36,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:36,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664053360] [2024-06-04 14:05:36,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664053360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:36,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:36,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:05:36,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288439383] [2024-06-04 14:05:36,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:36,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:36,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:36,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:36,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:36,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-04 14:05:36,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 659 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2024-06-04 14:05:36,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:36,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-04 14:05:36,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:36,480 INFO L124 PetriNetUnfolderBase]: 521/1095 cut-off events. [2024-06-04 14:05:36,480 INFO L125 PetriNetUnfolderBase]: For 5825/5831 co-relation queries the response was YES. [2024-06-04 14:05:36,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3832 conditions, 1095 events. 521/1095 cut-off events. For 5825/5831 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6468 event pairs, 153 based on Foata normal form. 34/1105 useless extension candidates. Maximal degree in co-relation 3275. Up to 357 conditions per place. [2024-06-04 14:05:36,487 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 63 selfloop transitions, 41 changer transitions 4/125 dead transitions. [2024-06-04 14:05:36,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 125 transitions, 1076 flow [2024-06-04 14:05:36,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:05:36,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:05:36,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 217 transitions. [2024-06-04 14:05:36,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5710526315789474 [2024-06-04 14:05:36,488 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 659 flow. Second operand 10 states and 217 transitions. [2024-06-04 14:05:36,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 125 transitions, 1076 flow [2024-06-04 14:05:36,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 125 transitions, 996 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-04 14:05:36,501 INFO L231 Difference]: Finished difference. Result has 105 places, 92 transitions, 869 flow [2024-06-04 14:05:36,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=869, PETRI_PLACES=105, PETRI_TRANSITIONS=92} [2024-06-04 14:05:36,503 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 66 predicate places. [2024-06-04 14:05:36,503 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 92 transitions, 869 flow [2024-06-04 14:05:36,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2024-06-04 14:05:36,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:36,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:36,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 14:05:36,503 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:36,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:36,504 INFO L85 PathProgramCache]: Analyzing trace with hash -273088864, now seen corresponding path program 2 times [2024-06-04 14:05:36,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:36,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689283609] [2024-06-04 14:05:36,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:36,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:36,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:36,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:36,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689283609] [2024-06-04 14:05:36,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689283609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:36,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:36,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:36,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25903915] [2024-06-04 14:05:36,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:36,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:36,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:36,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:36,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:36,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:36,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 92 transitions, 869 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-04 14:05:36,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:36,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:36,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:36,744 INFO L124 PetriNetUnfolderBase]: 380/910 cut-off events. [2024-06-04 14:05:36,744 INFO L125 PetriNetUnfolderBase]: For 8827/8861 co-relation queries the response was YES. [2024-06-04 14:05:36,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4086 conditions, 910 events. 380/910 cut-off events. For 8827/8861 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5658 event pairs, 103 based on Foata normal form. 9/904 useless extension candidates. Maximal degree in co-relation 3267. Up to 258 conditions per place. [2024-06-04 14:05:36,751 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 57 selfloop transitions, 32 changer transitions 0/111 dead transitions. [2024-06-04 14:05:36,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 111 transitions, 1246 flow [2024-06-04 14:05:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:36,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:36,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-04 14:05:36,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2024-06-04 14:05:36,753 INFO L175 Difference]: Start difference. First operand has 105 places, 92 transitions, 869 flow. Second operand 6 states and 134 transitions. [2024-06-04 14:05:36,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 111 transitions, 1246 flow [2024-06-04 14:05:36,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 111 transitions, 1246 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-04 14:05:36,771 INFO L231 Difference]: Finished difference. Result has 111 places, 97 transitions, 989 flow [2024-06-04 14:05:36,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=989, PETRI_PLACES=111, PETRI_TRANSITIONS=97} [2024-06-04 14:05:36,771 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 72 predicate places. [2024-06-04 14:05:36,772 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 97 transitions, 989 flow [2024-06-04 14:05:36,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-04 14:05:36,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:36,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:36,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 14:05:36,772 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:36,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:36,773 INFO L85 PathProgramCache]: Analyzing trace with hash -681728894, now seen corresponding path program 3 times [2024-06-04 14:05:36,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:36,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607902598] [2024-06-04 14:05:36,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:36,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:36,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:36,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607902598] [2024-06-04 14:05:36,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607902598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:36,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:36,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:36,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015666890] [2024-06-04 14:05:36,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:36,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:36,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:36,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:36,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:36,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:36,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 97 transitions, 989 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-04 14:05:36,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:36,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:36,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:36,970 INFO L124 PetriNetUnfolderBase]: 378/907 cut-off events. [2024-06-04 14:05:36,970 INFO L125 PetriNetUnfolderBase]: For 9944/9978 co-relation queries the response was YES. [2024-06-04 14:05:36,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4253 conditions, 907 events. 378/907 cut-off events. For 9944/9978 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5658 event pairs, 98 based on Foata normal form. 5/897 useless extension candidates. Maximal degree in co-relation 3430. Up to 257 conditions per place. [2024-06-04 14:05:36,978 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 56 selfloop transitions, 34 changer transitions 0/112 dead transitions. [2024-06-04 14:05:36,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 1334 flow [2024-06-04 14:05:36,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:36,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:36,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-04 14:05:36,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2024-06-04 14:05:36,979 INFO L175 Difference]: Start difference. First operand has 111 places, 97 transitions, 989 flow. Second operand 6 states and 134 transitions. [2024-06-04 14:05:36,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 1334 flow [2024-06-04 14:05:36,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 112 transitions, 1290 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-04 14:05:36,997 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 1056 flow [2024-06-04 14:05:36,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1056, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2024-06-04 14:05:36,997 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2024-06-04 14:05:36,997 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 1056 flow [2024-06-04 14:05:36,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2024-06-04 14:05:36,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:36,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:36,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 14:05:36,998 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:36,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:36,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1380998671, now seen corresponding path program 1 times [2024-06-04 14:05:36,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:36,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934684182] [2024-06-04 14:05:36,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:36,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:37,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:37,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934684182] [2024-06-04 14:05:37,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934684182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:37,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:37,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:37,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682421704] [2024-06-04 14:05:37,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:37,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:37,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:37,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:37,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:37,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:37,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 98 transitions, 1056 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:37,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:37,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:37,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:37,227 INFO L124 PetriNetUnfolderBase]: 374/892 cut-off events. [2024-06-04 14:05:37,227 INFO L125 PetriNetUnfolderBase]: For 11645/11691 co-relation queries the response was YES. [2024-06-04 14:05:37,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4333 conditions, 892 events. 374/892 cut-off events. For 11645/11691 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5485 event pairs, 80 based on Foata normal form. 14/883 useless extension candidates. Maximal degree in co-relation 3742. Up to 255 conditions per place. [2024-06-04 14:05:37,234 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 69 selfloop transitions, 37 changer transitions 0/128 dead transitions. [2024-06-04 14:05:37,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 128 transitions, 1507 flow [2024-06-04 14:05:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:37,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-04 14:05:37,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6491228070175439 [2024-06-04 14:05:37,236 INFO L175 Difference]: Start difference. First operand has 116 places, 98 transitions, 1056 flow. Second operand 6 states and 148 transitions. [2024-06-04 14:05:37,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 128 transitions, 1507 flow [2024-06-04 14:05:37,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 128 transitions, 1460 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-04 14:05:37,254 INFO L231 Difference]: Finished difference. Result has 122 places, 104 transitions, 1214 flow [2024-06-04 14:05:37,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1214, PETRI_PLACES=122, PETRI_TRANSITIONS=104} [2024-06-04 14:05:37,255 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 83 predicate places. [2024-06-04 14:05:37,255 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 104 transitions, 1214 flow [2024-06-04 14:05:37,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:37,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:37,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:37,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 14:05:37,256 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:37,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:37,256 INFO L85 PathProgramCache]: Analyzing trace with hash 956332567, now seen corresponding path program 2 times [2024-06-04 14:05:37,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:37,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006175201] [2024-06-04 14:05:37,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:37,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:37,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:37,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006175201] [2024-06-04 14:05:37,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006175201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:37,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:37,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:37,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908076321] [2024-06-04 14:05:37,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:37,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:37,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:37,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:37,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:37,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:37,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 104 transitions, 1214 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:37,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:37,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:37,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:37,479 INFO L124 PetriNetUnfolderBase]: 379/895 cut-off events. [2024-06-04 14:05:37,479 INFO L125 PetriNetUnfolderBase]: For 13571/13627 co-relation queries the response was YES. [2024-06-04 14:05:37,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4635 conditions, 895 events. 379/895 cut-off events. For 13571/13627 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5502 event pairs, 85 based on Foata normal form. 18/888 useless extension candidates. Maximal degree in co-relation 4059. Up to 261 conditions per place. [2024-06-04 14:05:37,490 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 71 selfloop transitions, 33 changer transitions 0/126 dead transitions. [2024-06-04 14:05:37,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 126 transitions, 1585 flow [2024-06-04 14:05:37,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:37,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:37,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-04 14:05:37,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-06-04 14:05:37,492 INFO L175 Difference]: Start difference. First operand has 122 places, 104 transitions, 1214 flow. Second operand 6 states and 142 transitions. [2024-06-04 14:05:37,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 126 transitions, 1585 flow [2024-06-04 14:05:37,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 126 transitions, 1499 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-04 14:05:37,518 INFO L231 Difference]: Finished difference. Result has 125 places, 107 transitions, 1254 flow [2024-06-04 14:05:37,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1254, PETRI_PLACES=125, PETRI_TRANSITIONS=107} [2024-06-04 14:05:37,519 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 86 predicate places. [2024-06-04 14:05:37,519 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 107 transitions, 1254 flow [2024-06-04 14:05:37,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:37,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:37,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:37,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 14:05:37,520 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:37,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:37,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1515985425, now seen corresponding path program 3 times [2024-06-04 14:05:37,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:37,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029520014] [2024-06-04 14:05:37,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:37,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:37,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:37,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:37,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029520014] [2024-06-04 14:05:37,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029520014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:37,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:37,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:05:37,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709525423] [2024-06-04 14:05:37,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:37,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:37,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:37,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:37,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:37,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-04 14:05:37,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 107 transitions, 1254 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2024-06-04 14:05:37,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:37,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-04 14:05:37,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:37,752 INFO L124 PetriNetUnfolderBase]: 503/1121 cut-off events. [2024-06-04 14:05:37,752 INFO L125 PetriNetUnfolderBase]: For 12479/12503 co-relation queries the response was YES. [2024-06-04 14:05:37,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5258 conditions, 1121 events. 503/1121 cut-off events. For 12479/12503 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7098 event pairs, 106 based on Foata normal form. 7/1071 useless extension candidates. Maximal degree in co-relation 5020. Up to 414 conditions per place. [2024-06-04 14:05:37,765 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 68 selfloop transitions, 40 changer transitions 0/148 dead transitions. [2024-06-04 14:05:37,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 148 transitions, 1678 flow [2024-06-04 14:05:37,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:05:37,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:05:37,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-04 14:05:37,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888157894736842 [2024-06-04 14:05:37,767 INFO L175 Difference]: Start difference. First operand has 125 places, 107 transitions, 1254 flow. Second operand 8 states and 179 transitions. [2024-06-04 14:05:37,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 148 transitions, 1678 flow [2024-06-04 14:05:37,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 148 transitions, 1620 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 14:05:37,795 INFO L231 Difference]: Finished difference. Result has 134 places, 122 transitions, 1434 flow [2024-06-04 14:05:37,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1434, PETRI_PLACES=134, PETRI_TRANSITIONS=122} [2024-06-04 14:05:37,796 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 95 predicate places. [2024-06-04 14:05:37,796 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 122 transitions, 1434 flow [2024-06-04 14:05:37,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2024-06-04 14:05:37,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:37,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:37,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 14:05:37,797 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:37,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:37,797 INFO L85 PathProgramCache]: Analyzing trace with hash 975585973, now seen corresponding path program 4 times [2024-06-04 14:05:37,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:37,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170726517] [2024-06-04 14:05:37,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:37,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:37,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:37,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:37,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170726517] [2024-06-04 14:05:37,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170726517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:37,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:37,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:37,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95970768] [2024-06-04 14:05:37,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:37,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:37,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:37,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:37,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:37,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:37,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 122 transitions, 1434 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:37,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:37,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:37,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:38,013 INFO L124 PetriNetUnfolderBase]: 423/1003 cut-off events. [2024-06-04 14:05:38,014 INFO L125 PetriNetUnfolderBase]: For 15134/15188 co-relation queries the response was YES. [2024-06-04 14:05:38,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5273 conditions, 1003 events. 423/1003 cut-off events. For 15134/15188 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6397 event pairs, 131 based on Foata normal form. 10/987 useless extension candidates. Maximal degree in co-relation 4875. Up to 339 conditions per place. [2024-06-04 14:05:38,021 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 70 selfloop transitions, 34 changer transitions 0/135 dead transitions. [2024-06-04 14:05:38,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 135 transitions, 1717 flow [2024-06-04 14:05:38,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:38,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-04 14:05:38,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2024-06-04 14:05:38,023 INFO L175 Difference]: Start difference. First operand has 134 places, 122 transitions, 1434 flow. Second operand 6 states and 134 transitions. [2024-06-04 14:05:38,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 135 transitions, 1717 flow [2024-06-04 14:05:38,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 135 transitions, 1717 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-04 14:05:38,066 INFO L231 Difference]: Finished difference. Result has 141 places, 123 transitions, 1532 flow [2024-06-04 14:05:38,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1532, PETRI_PLACES=141, PETRI_TRANSITIONS=123} [2024-06-04 14:05:38,067 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 102 predicate places. [2024-06-04 14:05:38,067 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 123 transitions, 1532 flow [2024-06-04 14:05:38,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:38,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:38,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:38,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 14:05:38,068 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:38,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:38,068 INFO L85 PathProgramCache]: Analyzing trace with hash -356997899, now seen corresponding path program 5 times [2024-06-04 14:05:38,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:38,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844673107] [2024-06-04 14:05:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:38,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:38,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:38,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844673107] [2024-06-04 14:05:38,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844673107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:38,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:38,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:05:38,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428040580] [2024-06-04 14:05:38,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:38,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:38,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:38,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:38,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:38,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-04 14:05:38,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 123 transitions, 1532 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2024-06-04 14:05:38,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:38,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-04 14:05:38,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:38,330 INFO L124 PetriNetUnfolderBase]: 436/1020 cut-off events. [2024-06-04 14:05:38,330 INFO L125 PetriNetUnfolderBase]: For 9602/9615 co-relation queries the response was YES. [2024-06-04 14:05:38,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4732 conditions, 1020 events. 436/1020 cut-off events. For 9602/9615 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6424 event pairs, 112 based on Foata normal form. 27/1028 useless extension candidates. Maximal degree in co-relation 4303. Up to 245 conditions per place. [2024-06-04 14:05:38,338 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 71 selfloop transitions, 45 changer transitions 0/150 dead transitions. [2024-06-04 14:05:38,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 150 transitions, 1823 flow [2024-06-04 14:05:38,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:05:38,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:05:38,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 208 transitions. [2024-06-04 14:05:38,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5473684210526316 [2024-06-04 14:05:38,339 INFO L175 Difference]: Start difference. First operand has 141 places, 123 transitions, 1532 flow. Second operand 10 states and 208 transitions. [2024-06-04 14:05:38,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 150 transitions, 1823 flow [2024-06-04 14:05:38,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 150 transitions, 1711 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 14:05:38,369 INFO L231 Difference]: Finished difference. Result has 152 places, 124 transitions, 1557 flow [2024-06-04 14:05:38,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1557, PETRI_PLACES=152, PETRI_TRANSITIONS=124} [2024-06-04 14:05:38,369 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 113 predicate places. [2024-06-04 14:05:38,369 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 124 transitions, 1557 flow [2024-06-04 14:05:38,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2024-06-04 14:05:38,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:38,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:38,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 14:05:38,370 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:38,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:38,370 INFO L85 PathProgramCache]: Analyzing trace with hash 746207533, now seen corresponding path program 1 times [2024-06-04 14:05:38,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:38,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913139924] [2024-06-04 14:05:38,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:38,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:38,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:38,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:38,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913139924] [2024-06-04 14:05:38,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913139924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:38,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:38,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:38,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879242874] [2024-06-04 14:05:38,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:38,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:38,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:38,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:38,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:38,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:38,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 124 transitions, 1557 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:38,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:38,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:38,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:38,599 INFO L124 PetriNetUnfolderBase]: 362/931 cut-off events. [2024-06-04 14:05:38,599 INFO L125 PetriNetUnfolderBase]: For 13695/13735 co-relation queries the response was YES. [2024-06-04 14:05:38,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4926 conditions, 931 events. 362/931 cut-off events. For 13695/13735 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6120 event pairs, 122 based on Foata normal form. 14/930 useless extension candidates. Maximal degree in co-relation 4505. Up to 271 conditions per place. [2024-06-04 14:05:38,608 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 66 selfloop transitions, 33 changer transitions 0/137 dead transitions. [2024-06-04 14:05:38,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 137 transitions, 1853 flow [2024-06-04 14:05:38,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:38,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:38,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-04 14:05:38,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-06-04 14:05:38,609 INFO L175 Difference]: Start difference. First operand has 152 places, 124 transitions, 1557 flow. Second operand 6 states and 130 transitions. [2024-06-04 14:05:38,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 137 transitions, 1853 flow [2024-06-04 14:05:38,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 137 transitions, 1796 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-04 14:05:38,659 INFO L231 Difference]: Finished difference. Result has 156 places, 127 transitions, 1608 flow [2024-06-04 14:05:38,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1608, PETRI_PLACES=156, PETRI_TRANSITIONS=127} [2024-06-04 14:05:38,660 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 117 predicate places. [2024-06-04 14:05:38,660 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 127 transitions, 1608 flow [2024-06-04 14:05:38,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:38,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:38,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:38,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 14:05:38,661 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:38,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:38,661 INFO L85 PathProgramCache]: Analyzing trace with hash 955594087, now seen corresponding path program 2 times [2024-06-04 14:05:38,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:38,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157705072] [2024-06-04 14:05:38,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:38,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:38,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:38,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:38,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157705072] [2024-06-04 14:05:38,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157705072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:38,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:38,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:38,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637315277] [2024-06-04 14:05:38,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:38,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:38,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:38,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:38,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:38,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:38,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 127 transitions, 1608 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:38,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:38,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:38,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:38,889 INFO L124 PetriNetUnfolderBase]: 368/938 cut-off events. [2024-06-04 14:05:38,889 INFO L125 PetriNetUnfolderBase]: For 14679/14727 co-relation queries the response was YES. [2024-06-04 14:05:38,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5036 conditions, 938 events. 368/938 cut-off events. For 14679/14727 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6124 event pairs, 121 based on Foata normal form. 15/933 useless extension candidates. Maximal degree in co-relation 4627. Up to 272 conditions per place. [2024-06-04 14:05:38,897 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 61 selfloop transitions, 39 changer transitions 0/138 dead transitions. [2024-06-04 14:05:38,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 138 transitions, 1945 flow [2024-06-04 14:05:38,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:38,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:38,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-04 14:05:38,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745614035087719 [2024-06-04 14:05:38,898 INFO L175 Difference]: Start difference. First operand has 156 places, 127 transitions, 1608 flow. Second operand 6 states and 131 transitions. [2024-06-04 14:05:38,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 138 transitions, 1945 flow [2024-06-04 14:05:38,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 138 transitions, 1896 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-04 14:05:38,936 INFO L231 Difference]: Finished difference. Result has 159 places, 130 transitions, 1676 flow [2024-06-04 14:05:38,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1676, PETRI_PLACES=159, PETRI_TRANSITIONS=130} [2024-06-04 14:05:38,937 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 120 predicate places. [2024-06-04 14:05:38,937 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 130 transitions, 1676 flow [2024-06-04 14:05:38,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:38,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:38,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:38,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 14:05:38,938 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:38,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:38,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1814789151, now seen corresponding path program 3 times [2024-06-04 14:05:38,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:38,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271710971] [2024-06-04 14:05:38,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:38,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:38,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:38,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271710971] [2024-06-04 14:05:38,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271710971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:38,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:38,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:05:38,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793856049] [2024-06-04 14:05:38,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:38,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:38,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:38,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:38,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:39,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-04 14:05:39,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 130 transitions, 1676 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) [2024-06-04 14:05:39,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:39,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-04 14:05:39,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:39,232 INFO L124 PetriNetUnfolderBase]: 526/1175 cut-off events. [2024-06-04 14:05:39,233 INFO L125 PetriNetUnfolderBase]: For 12850/12879 co-relation queries the response was YES. [2024-06-04 14:05:39,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5844 conditions, 1175 events. 526/1175 cut-off events. For 12850/12879 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7478 event pairs, 124 based on Foata normal form. 10/1159 useless extension candidates. Maximal degree in co-relation 5569. Up to 439 conditions per place. [2024-06-04 14:05:39,240 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 73 selfloop transitions, 51 changer transitions 0/170 dead transitions. [2024-06-04 14:05:39,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 170 transitions, 2137 flow [2024-06-04 14:05:39,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:05:39,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:05:39,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-04 14:05:39,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5822368421052632 [2024-06-04 14:05:39,242 INFO L175 Difference]: Start difference. First operand has 159 places, 130 transitions, 1676 flow. Second operand 8 states and 177 transitions. [2024-06-04 14:05:39,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 170 transitions, 2137 flow [2024-06-04 14:05:39,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 170 transitions, 2082 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-04 14:05:39,283 INFO L231 Difference]: Finished difference. Result has 170 places, 142 transitions, 1941 flow [2024-06-04 14:05:39,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1941, PETRI_PLACES=170, PETRI_TRANSITIONS=142} [2024-06-04 14:05:39,284 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 131 predicate places. [2024-06-04 14:05:39,284 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 142 transitions, 1941 flow [2024-06-04 14:05:39,284 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) [2024-06-04 14:05:39,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:39,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:39,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 14:05:39,285 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:39,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:39,285 INFO L85 PathProgramCache]: Analyzing trace with hash 728752992, now seen corresponding path program 1 times [2024-06-04 14:05:39,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:39,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75856972] [2024-06-04 14:05:39,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:39,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:39,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:39,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75856972] [2024-06-04 14:05:39,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75856972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:39,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:39,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:39,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555669287] [2024-06-04 14:05:39,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:39,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:39,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:39,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:39,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:39,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:39,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 142 transitions, 1941 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:39,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:39,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:39,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:39,515 INFO L124 PetriNetUnfolderBase]: 387/980 cut-off events. [2024-06-04 14:05:39,515 INFO L125 PetriNetUnfolderBase]: For 18509/18559 co-relation queries the response was YES. [2024-06-04 14:05:39,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5760 conditions, 980 events. 387/980 cut-off events. For 18509/18559 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6527 event pairs, 90 based on Foata normal form. 8/965 useless extension candidates. Maximal degree in co-relation 5466. Up to 281 conditions per place. [2024-06-04 14:05:39,524 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 70 selfloop transitions, 41 changer transitions 0/159 dead transitions. [2024-06-04 14:05:39,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 159 transitions, 2300 flow [2024-06-04 14:05:39,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:39,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-04 14:05:39,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6096491228070176 [2024-06-04 14:05:39,526 INFO L175 Difference]: Start difference. First operand has 170 places, 142 transitions, 1941 flow. Second operand 6 states and 139 transitions. [2024-06-04 14:05:39,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 159 transitions, 2300 flow [2024-06-04 14:05:39,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 159 transitions, 2266 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-04 14:05:39,574 INFO L231 Difference]: Finished difference. Result has 175 places, 143 transitions, 2010 flow [2024-06-04 14:05:39,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2010, PETRI_PLACES=175, PETRI_TRANSITIONS=143} [2024-06-04 14:05:39,575 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 136 predicate places. [2024-06-04 14:05:39,575 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 143 transitions, 2010 flow [2024-06-04 14:05:39,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:39,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:39,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:39,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 14:05:39,576 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:39,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:39,576 INFO L85 PathProgramCache]: Analyzing trace with hash 14369211, now seen corresponding path program 4 times [2024-06-04 14:05:39,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:39,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007519961] [2024-06-04 14:05:39,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:39,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:39,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:39,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007519961] [2024-06-04 14:05:39,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007519961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:39,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:39,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:39,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361352842] [2024-06-04 14:05:39,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:39,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:39,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:39,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:39,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:39,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:39,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 143 transitions, 2010 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:39,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:39,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:39,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:39,824 INFO L124 PetriNetUnfolderBase]: 403/1021 cut-off events. [2024-06-04 14:05:39,824 INFO L125 PetriNetUnfolderBase]: For 19824/19866 co-relation queries the response was YES. [2024-06-04 14:05:39,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6057 conditions, 1021 events. 403/1021 cut-off events. For 19824/19866 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6839 event pairs, 123 based on Foata normal form. 11/1012 useless extension candidates. Maximal degree in co-relation 5582. Up to 288 conditions per place. [2024-06-04 14:05:39,833 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 73 selfloop transitions, 33 changer transitions 0/154 dead transitions. [2024-06-04 14:05:39,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 154 transitions, 2370 flow [2024-06-04 14:05:39,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:39,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:39,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-04 14:05:39,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-06-04 14:05:39,834 INFO L175 Difference]: Start difference. First operand has 175 places, 143 transitions, 2010 flow. Second operand 6 states and 130 transitions. [2024-06-04 14:05:39,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 154 transitions, 2370 flow [2024-06-04 14:05:39,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 154 transitions, 2307 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 14:05:39,891 INFO L231 Difference]: Finished difference. Result has 178 places, 146 transitions, 2055 flow [2024-06-04 14:05:39,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1947, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2055, PETRI_PLACES=178, PETRI_TRANSITIONS=146} [2024-06-04 14:05:39,892 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 139 predicate places. [2024-06-04 14:05:39,892 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 146 transitions, 2055 flow [2024-06-04 14:05:39,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:39,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:39,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:39,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 14:05:39,893 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:39,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:39,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1332154496, now seen corresponding path program 2 times [2024-06-04 14:05:39,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:39,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002518391] [2024-06-04 14:05:39,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:39,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:39,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:39,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002518391] [2024-06-04 14:05:39,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002518391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:39,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:39,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:39,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210729653] [2024-06-04 14:05:39,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:39,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:39,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:39,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:39,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:39,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:39,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 146 transitions, 2055 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:39,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:39,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:39,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:40,113 INFO L124 PetriNetUnfolderBase]: 397/998 cut-off events. [2024-06-04 14:05:40,114 INFO L125 PetriNetUnfolderBase]: For 20997/21045 co-relation queries the response was YES. [2024-06-04 14:05:40,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6013 conditions, 998 events. 397/998 cut-off events. For 20997/21045 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6597 event pairs, 67 based on Foata normal form. 10/985 useless extension candidates. Maximal degree in co-relation 5608. Up to 291 conditions per place. [2024-06-04 14:05:40,122 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 69 selfloop transitions, 45 changer transitions 0/162 dead transitions. [2024-06-04 14:05:40,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 162 transitions, 2470 flow [2024-06-04 14:05:40,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:40,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:40,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-04 14:05:40,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2024-06-04 14:05:40,123 INFO L175 Difference]: Start difference. First operand has 178 places, 146 transitions, 2055 flow. Second operand 6 states and 136 transitions. [2024-06-04 14:05:40,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 162 transitions, 2470 flow [2024-06-04 14:05:40,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 162 transitions, 2409 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-04 14:05:40,178 INFO L231 Difference]: Finished difference. Result has 181 places, 147 transitions, 2105 flow [2024-06-04 14:05:40,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1994, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2105, PETRI_PLACES=181, PETRI_TRANSITIONS=147} [2024-06-04 14:05:40,182 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 142 predicate places. [2024-06-04 14:05:40,182 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 147 transitions, 2105 flow [2024-06-04 14:05:40,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:40,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:40,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:40,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 14:05:40,182 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:40,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:40,183 INFO L85 PathProgramCache]: Analyzing trace with hash -191361824, now seen corresponding path program 3 times [2024-06-04 14:05:40,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:40,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707660835] [2024-06-04 14:05:40,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:40,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:40,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:40,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707660835] [2024-06-04 14:05:40,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707660835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:40,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:40,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:40,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292484962] [2024-06-04 14:05:40,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:40,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:40,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:40,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:40,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:40,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:40,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 147 transitions, 2105 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:40,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:40,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:40,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:40,443 INFO L124 PetriNetUnfolderBase]: 399/1006 cut-off events. [2024-06-04 14:05:40,443 INFO L125 PetriNetUnfolderBase]: For 22082/22134 co-relation queries the response was YES. [2024-06-04 14:05:40,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6087 conditions, 1006 events. 399/1006 cut-off events. For 22082/22134 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6689 event pairs, 66 based on Foata normal form. 10/993 useless extension candidates. Maximal degree in co-relation 5671. Up to 292 conditions per place. [2024-06-04 14:05:40,454 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 71 selfloop transitions, 42 changer transitions 0/161 dead transitions. [2024-06-04 14:05:40,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 161 transitions, 2457 flow [2024-06-04 14:05:40,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:40,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-04 14:05:40,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5921052631578947 [2024-06-04 14:05:40,455 INFO L175 Difference]: Start difference. First operand has 181 places, 147 transitions, 2105 flow. Second operand 6 states and 135 transitions. [2024-06-04 14:05:40,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 161 transitions, 2457 flow [2024-06-04 14:05:40,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 161 transitions, 2347 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 14:05:40,519 INFO L231 Difference]: Finished difference. Result has 183 places, 147 transitions, 2083 flow [2024-06-04 14:05:40,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2083, PETRI_PLACES=183, PETRI_TRANSITIONS=147} [2024-06-04 14:05:40,521 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 144 predicate places. [2024-06-04 14:05:40,522 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 147 transitions, 2083 flow [2024-06-04 14:05:40,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:40,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:40,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:40,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 14:05:40,523 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:40,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:40,523 INFO L85 PathProgramCache]: Analyzing trace with hash -191361669, now seen corresponding path program 5 times [2024-06-04 14:05:40,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:40,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678645705] [2024-06-04 14:05:40,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:40,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:40,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:40,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:40,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678645705] [2024-06-04 14:05:40,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678645705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:40,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:40,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:40,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053934162] [2024-06-04 14:05:40,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:40,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:40,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:40,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:40,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:40,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:40,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 147 transitions, 2083 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:40,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:40,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:40,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:40,758 INFO L124 PetriNetUnfolderBase]: 405/1033 cut-off events. [2024-06-04 14:05:40,759 INFO L125 PetriNetUnfolderBase]: For 22335/22373 co-relation queries the response was YES. [2024-06-04 14:05:40,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6144 conditions, 1033 events. 405/1033 cut-off events. For 22335/22373 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6968 event pairs, 113 based on Foata normal form. 17/1032 useless extension candidates. Maximal degree in co-relation 5666. Up to 287 conditions per place. [2024-06-04 14:05:40,768 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 75 selfloop transitions, 32 changer transitions 0/155 dead transitions. [2024-06-04 14:05:40,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 155 transitions, 2413 flow [2024-06-04 14:05:40,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:40,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:40,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-04 14:05:40,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2024-06-04 14:05:40,769 INFO L175 Difference]: Start difference. First operand has 183 places, 147 transitions, 2083 flow. Second operand 6 states and 127 transitions. [2024-06-04 14:05:40,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 155 transitions, 2413 flow [2024-06-04 14:05:40,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 155 transitions, 2287 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 14:05:40,829 INFO L231 Difference]: Finished difference. Result has 183 places, 147 transitions, 2027 flow [2024-06-04 14:05:40,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1957, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2027, PETRI_PLACES=183, PETRI_TRANSITIONS=147} [2024-06-04 14:05:40,831 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 144 predicate places. [2024-06-04 14:05:40,831 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 147 transitions, 2027 flow [2024-06-04 14:05:40,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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) [2024-06-04 14:05:40,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:40,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:40,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 14:05:40,832 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:40,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:40,832 INFO L85 PathProgramCache]: Analyzing trace with hash -138712909, now seen corresponding path program 1 times [2024-06-04 14:05:40,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:40,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735370079] [2024-06-04 14:05:40,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:40,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:40,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:40,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:40,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735370079] [2024-06-04 14:05:40,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735370079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:40,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:40,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:40,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091400355] [2024-06-04 14:05:40,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:40,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:40,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:40,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:40,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:40,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:40,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 147 transitions, 2027 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:40,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:40,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:40,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:41,064 INFO L124 PetriNetUnfolderBase]: 404/1036 cut-off events. [2024-06-04 14:05:41,065 INFO L125 PetriNetUnfolderBase]: For 21427/21449 co-relation queries the response was YES. [2024-06-04 14:05:41,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6040 conditions, 1036 events. 404/1036 cut-off events. For 21427/21449 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6975 event pairs, 52 based on Foata normal form. 10/1034 useless extension candidates. Maximal degree in co-relation 5560. Up to 215 conditions per place. [2024-06-04 14:05:41,076 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 82 selfloop transitions, 25 changer transitions 6/161 dead transitions. [2024-06-04 14:05:41,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 161 transitions, 2387 flow [2024-06-04 14:05:41,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:41,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:41,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-04 14:05:41,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2024-06-04 14:05:41,078 INFO L175 Difference]: Start difference. First operand has 183 places, 147 transitions, 2027 flow. Second operand 6 states and 134 transitions. [2024-06-04 14:05:41,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 161 transitions, 2387 flow [2024-06-04 14:05:41,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 161 transitions, 2270 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 14:05:41,138 INFO L231 Difference]: Finished difference. Result has 182 places, 143 transitions, 1889 flow [2024-06-04 14:05:41,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1910, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1889, PETRI_PLACES=182, PETRI_TRANSITIONS=143} [2024-06-04 14:05:41,138 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 143 predicate places. [2024-06-04 14:05:41,139 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 143 transitions, 1889 flow [2024-06-04 14:05:41,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:41,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:41,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:41,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 14:05:41,139 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:41,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:41,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1649750197, now seen corresponding path program 2 times [2024-06-04 14:05:41,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:41,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064713303] [2024-06-04 14:05:41,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:41,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:41,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:41,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:41,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064713303] [2024-06-04 14:05:41,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064713303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:41,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:41,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:41,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051267335] [2024-06-04 14:05:41,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:41,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:41,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:41,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:41,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:41,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:41,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 143 transitions, 1889 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:41,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:41,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:41,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:41,339 INFO L124 PetriNetUnfolderBase]: 373/957 cut-off events. [2024-06-04 14:05:41,339 INFO L125 PetriNetUnfolderBase]: For 21003/21022 co-relation queries the response was YES. [2024-06-04 14:05:41,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5573 conditions, 957 events. 373/957 cut-off events. For 21003/21022 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6286 event pairs, 41 based on Foata normal form. 10/954 useless extension candidates. Maximal degree in co-relation 5103. Up to 201 conditions per place. [2024-06-04 14:05:41,348 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 81 selfloop transitions, 24 changer transitions 0/153 dead transitions. [2024-06-04 14:05:41,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 153 transitions, 2227 flow [2024-06-04 14:05:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:41,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:41,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-04 14:05:41,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-06-04 14:05:41,350 INFO L175 Difference]: Start difference. First operand has 182 places, 143 transitions, 1889 flow. Second operand 6 states and 130 transitions. [2024-06-04 14:05:41,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 153 transitions, 2227 flow [2024-06-04 14:05:41,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 153 transitions, 2152 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 14:05:41,405 INFO L231 Difference]: Finished difference. Result has 178 places, 143 transitions, 1875 flow [2024-06-04 14:05:41,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1875, PETRI_PLACES=178, PETRI_TRANSITIONS=143} [2024-06-04 14:05:41,406 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 139 predicate places. [2024-06-04 14:05:41,406 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 143 transitions, 1875 flow [2024-06-04 14:05:41,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:41,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:41,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:41,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 14:05:41,407 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:41,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:41,407 INFO L85 PathProgramCache]: Analyzing trace with hash 176239031, now seen corresponding path program 3 times [2024-06-04 14:05:41,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:41,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363812243] [2024-06-04 14:05:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:41,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:41,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:41,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:41,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363812243] [2024-06-04 14:05:41,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363812243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:41,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:41,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:41,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955013811] [2024-06-04 14:05:41,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:41,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:41,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:41,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:41,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:41,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:41,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 143 transitions, 1875 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:41,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:41,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:41,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:41,613 INFO L124 PetriNetUnfolderBase]: 367/943 cut-off events. [2024-06-04 14:05:41,614 INFO L125 PetriNetUnfolderBase]: For 19124/19140 co-relation queries the response was YES. [2024-06-04 14:05:41,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5281 conditions, 943 events. 367/943 cut-off events. For 19124/19140 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6180 event pairs, 41 based on Foata normal form. 16/947 useless extension candidates. Maximal degree in co-relation 4874. Up to 199 conditions per place. [2024-06-04 14:05:41,620 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 58 selfloop transitions, 47 changer transitions 0/153 dead transitions. [2024-06-04 14:05:41,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 153 transitions, 2157 flow [2024-06-04 14:05:41,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:41,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:41,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-04 14:05:41,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-04 14:05:41,621 INFO L175 Difference]: Start difference. First operand has 178 places, 143 transitions, 1875 flow. Second operand 6 states and 133 transitions. [2024-06-04 14:05:41,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 153 transitions, 2157 flow [2024-06-04 14:05:41,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 153 transitions, 2050 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 14:05:41,664 INFO L231 Difference]: Finished difference. Result has 176 places, 143 transitions, 1871 flow [2024-06-04 14:05:41,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1871, PETRI_PLACES=176, PETRI_TRANSITIONS=143} [2024-06-04 14:05:41,664 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 137 predicate places. [2024-06-04 14:05:41,665 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 143 transitions, 1871 flow [2024-06-04 14:05:41,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:41,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:41,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:41,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 14:05:41,665 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:41,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:41,666 INFO L85 PathProgramCache]: Analyzing trace with hash -485946505, now seen corresponding path program 1 times [2024-06-04 14:05:41,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:41,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124529976] [2024-06-04 14:05:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:41,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:41,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:41,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124529976] [2024-06-04 14:05:41,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124529976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:41,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:41,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:41,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190778235] [2024-06-04 14:05:41,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:41,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:41,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:41,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:41,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:41,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:41,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 143 transitions, 1871 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:41,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:41,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:41,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:41,870 INFO L124 PetriNetUnfolderBase]: 377/982 cut-off events. [2024-06-04 14:05:41,870 INFO L125 PetriNetUnfolderBase]: For 20253/20268 co-relation queries the response was YES. [2024-06-04 14:05:41,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5397 conditions, 982 events. 377/982 cut-off events. For 20253/20268 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6621 event pairs, 79 based on Foata normal form. 16/987 useless extension candidates. Maximal degree in co-relation 5163. Up to 198 conditions per place. [2024-06-04 14:05:41,879 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 55 selfloop transitions, 55 changer transitions 0/158 dead transitions. [2024-06-04 14:05:41,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 158 transitions, 2193 flow [2024-06-04 14:05:41,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:41,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:41,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-04 14:05:41,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2024-06-04 14:05:41,880 INFO L175 Difference]: Start difference. First operand has 176 places, 143 transitions, 1871 flow. Second operand 6 states and 136 transitions. [2024-06-04 14:05:41,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 158 transitions, 2193 flow [2024-06-04 14:05:41,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 158 transitions, 2098 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-04 14:05:41,937 INFO L231 Difference]: Finished difference. Result has 177 places, 144 transitions, 1913 flow [2024-06-04 14:05:41,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1913, PETRI_PLACES=177, PETRI_TRANSITIONS=144} [2024-06-04 14:05:41,937 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 138 predicate places. [2024-06-04 14:05:41,937 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 144 transitions, 1913 flow [2024-06-04 14:05:41,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:41,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:41,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:41,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 14:05:41,938 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:41,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:41,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1493352477, now seen corresponding path program 2 times [2024-06-04 14:05:41,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:41,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431066969] [2024-06-04 14:05:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:41,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:42,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:42,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431066969] [2024-06-04 14:05:42,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431066969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:42,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:42,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:42,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361200685] [2024-06-04 14:05:42,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:42,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:42,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:42,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:42,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:42,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:42,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 144 transitions, 1913 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:42,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:42,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:42,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:42,157 INFO L124 PetriNetUnfolderBase]: 398/1049 cut-off events. [2024-06-04 14:05:42,157 INFO L125 PetriNetUnfolderBase]: For 22268/22288 co-relation queries the response was YES. [2024-06-04 14:05:42,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5761 conditions, 1049 events. 398/1049 cut-off events. For 22268/22288 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7287 event pairs, 77 based on Foata normal form. 16/1050 useless extension candidates. Maximal degree in co-relation 5521. Up to 279 conditions per place. [2024-06-04 14:05:42,165 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 84 selfloop transitions, 27 changer transitions 0/159 dead transitions. [2024-06-04 14:05:42,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 159 transitions, 2303 flow [2024-06-04 14:05:42,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:42,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-04 14:05:42,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-04 14:05:42,167 INFO L175 Difference]: Start difference. First operand has 177 places, 144 transitions, 1913 flow. Second operand 6 states and 133 transitions. [2024-06-04 14:05:42,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 159 transitions, 2303 flow [2024-06-04 14:05:42,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 159 transitions, 2196 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 14:05:42,229 INFO L231 Difference]: Finished difference. Result has 180 places, 146 transitions, 1904 flow [2024-06-04 14:05:42,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1904, PETRI_PLACES=180, PETRI_TRANSITIONS=146} [2024-06-04 14:05:42,230 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 141 predicate places. [2024-06-04 14:05:42,230 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 146 transitions, 1904 flow [2024-06-04 14:05:42,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:42,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:42,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:42,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 14:05:42,230 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:42,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:42,231 INFO L85 PathProgramCache]: Analyzing trace with hash -497747477, now seen corresponding path program 3 times [2024-06-04 14:05:42,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:42,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593032091] [2024-06-04 14:05:42,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:42,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:42,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:42,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593032091] [2024-06-04 14:05:42,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593032091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:42,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:42,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:42,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219052390] [2024-06-04 14:05:42,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:42,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:42,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:42,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:42,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:42,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:42,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 146 transitions, 1904 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:42,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:42,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:42,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:42,444 INFO L124 PetriNetUnfolderBase]: 390/1031 cut-off events. [2024-06-04 14:05:42,445 INFO L125 PetriNetUnfolderBase]: For 19409/19432 co-relation queries the response was YES. [2024-06-04 14:05:42,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5612 conditions, 1031 events. 390/1031 cut-off events. For 19409/19432 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7132 event pairs, 77 based on Foata normal form. 10/1028 useless extension candidates. Maximal degree in co-relation 5373. Up to 276 conditions per place. [2024-06-04 14:05:42,454 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 76 selfloop transitions, 33 changer transitions 0/157 dead transitions. [2024-06-04 14:05:42,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 157 transitions, 2204 flow [2024-06-04 14:05:42,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:42,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-04 14:05:42,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-06-04 14:05:42,455 INFO L175 Difference]: Start difference. First operand has 180 places, 146 transitions, 1904 flow. Second operand 6 states and 130 transitions. [2024-06-04 14:05:42,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 157 transitions, 2204 flow [2024-06-04 14:05:42,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 157 transitions, 2154 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-04 14:05:42,522 INFO L231 Difference]: Finished difference. Result has 183 places, 146 transitions, 1924 flow [2024-06-04 14:05:42,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1924, PETRI_PLACES=183, PETRI_TRANSITIONS=146} [2024-06-04 14:05:42,522 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 144 predicate places. [2024-06-04 14:05:42,523 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 146 transitions, 1924 flow [2024-06-04 14:05:42,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:42,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:42,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:42,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 14:05:42,523 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:42,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:42,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1640044167, now seen corresponding path program 4 times [2024-06-04 14:05:42,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:42,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373307999] [2024-06-04 14:05:42,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:42,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:42,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:42,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:42,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373307999] [2024-06-04 14:05:42,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373307999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:42,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:42,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:42,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904506591] [2024-06-04 14:05:42,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:42,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:42,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:42,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:42,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:42,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:42,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 146 transitions, 1924 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:42,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:42,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:42,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:42,722 INFO L124 PetriNetUnfolderBase]: 395/1048 cut-off events. [2024-06-04 14:05:42,722 INFO L125 PetriNetUnfolderBase]: For 20483/20509 co-relation queries the response was YES. [2024-06-04 14:05:42,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5730 conditions, 1048 events. 395/1048 cut-off events. For 20483/20509 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7254 event pairs, 95 based on Foata normal form. 10/1040 useless extension candidates. Maximal degree in co-relation 5330. Up to 328 conditions per place. [2024-06-04 14:05:42,731 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 79 selfloop transitions, 31 changer transitions 0/158 dead transitions. [2024-06-04 14:05:42,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 158 transitions, 2300 flow [2024-06-04 14:05:42,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:42,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-04 14:05:42,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2024-06-04 14:05:42,732 INFO L175 Difference]: Start difference. First operand has 183 places, 146 transitions, 1924 flow. Second operand 6 states and 128 transitions. [2024-06-04 14:05:42,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 158 transitions, 2300 flow [2024-06-04 14:05:42,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 158 transitions, 2230 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-04 14:05:42,803 INFO L231 Difference]: Finished difference. Result has 184 places, 147 transitions, 1934 flow [2024-06-04 14:05:42,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1934, PETRI_PLACES=184, PETRI_TRANSITIONS=147} [2024-06-04 14:05:42,804 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 145 predicate places. [2024-06-04 14:05:42,804 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 147 transitions, 1934 flow [2024-06-04 14:05:42,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:42,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:42,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:42,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 14:05:42,805 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:42,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:42,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1637247657, now seen corresponding path program 5 times [2024-06-04 14:05:42,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:42,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703300599] [2024-06-04 14:05:42,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:42,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:42,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:42,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703300599] [2024-06-04 14:05:42,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703300599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:42,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:42,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:42,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698136206] [2024-06-04 14:05:42,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:42,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:42,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:42,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:42,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:42,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:42,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 147 transitions, 1934 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:42,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:42,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:42,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:43,017 INFO L124 PetriNetUnfolderBase]: 397/1056 cut-off events. [2024-06-04 14:05:43,018 INFO L125 PetriNetUnfolderBase]: For 20221/20245 co-relation queries the response was YES. [2024-06-04 14:05:43,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5722 conditions, 1056 events. 397/1056 cut-off events. For 20221/20245 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7369 event pairs, 95 based on Foata normal form. 8/1048 useless extension candidates. Maximal degree in co-relation 5329. Up to 327 conditions per place. [2024-06-04 14:05:43,026 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 91 selfloop transitions, 19 changer transitions 0/158 dead transitions. [2024-06-04 14:05:43,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 158 transitions, 2300 flow [2024-06-04 14:05:43,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:43,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-04 14:05:43,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-06-04 14:05:43,027 INFO L175 Difference]: Start difference. First operand has 184 places, 147 transitions, 1934 flow. Second operand 6 states and 130 transitions. [2024-06-04 14:05:43,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 158 transitions, 2300 flow [2024-06-04 14:05:43,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 158 transitions, 2237 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-04 14:05:43,103 INFO L231 Difference]: Finished difference. Result has 185 places, 147 transitions, 1913 flow [2024-06-04 14:05:43,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1913, PETRI_PLACES=185, PETRI_TRANSITIONS=147} [2024-06-04 14:05:43,103 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 146 predicate places. [2024-06-04 14:05:43,103 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 147 transitions, 1913 flow [2024-06-04 14:05:43,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:43,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:43,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:43,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 14:05:43,104 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:43,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:43,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1637243007, now seen corresponding path program 6 times [2024-06-04 14:05:43,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:43,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938629013] [2024-06-04 14:05:43,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:43,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:43,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:43,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938629013] [2024-06-04 14:05:43,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938629013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:43,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:43,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:43,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920949602] [2024-06-04 14:05:43,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:43,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:43,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:43,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:43,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:43,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:43,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 147 transitions, 1913 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:43,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:43,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:43,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:43,303 INFO L124 PetriNetUnfolderBase]: 391/1042 cut-off events. [2024-06-04 14:05:43,303 INFO L125 PetriNetUnfolderBase]: For 19910/19928 co-relation queries the response was YES. [2024-06-04 14:05:43,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5407 conditions, 1042 events. 391/1042 cut-off events. For 19910/19928 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7236 event pairs, 91 based on Foata normal form. 14/1041 useless extension candidates. Maximal degree in co-relation 5015. Up to 325 conditions per place. [2024-06-04 14:05:43,311 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 89 selfloop transitions, 20 changer transitions 0/157 dead transitions. [2024-06-04 14:05:43,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 157 transitions, 2215 flow [2024-06-04 14:05:43,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:43,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:43,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-04 14:05:43,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2024-06-04 14:05:43,312 INFO L175 Difference]: Start difference. First operand has 185 places, 147 transitions, 1913 flow. Second operand 6 states and 128 transitions. [2024-06-04 14:05:43,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 157 transitions, 2215 flow [2024-06-04 14:05:43,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 157 transitions, 2138 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 14:05:43,369 INFO L231 Difference]: Finished difference. Result has 185 places, 147 transitions, 1882 flow [2024-06-04 14:05:43,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1882, PETRI_PLACES=185, PETRI_TRANSITIONS=147} [2024-06-04 14:05:43,369 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 146 predicate places. [2024-06-04 14:05:43,369 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 147 transitions, 1882 flow [2024-06-04 14:05:43,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 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) [2024-06-04 14:05:43,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:43,370 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] [2024-06-04 14:05:43,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 14:05:43,370 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:43,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:43,370 INFO L85 PathProgramCache]: Analyzing trace with hash 2012710222, now seen corresponding path program 1 times [2024-06-04 14:05:43,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:43,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237055836] [2024-06-04 14:05:43,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:43,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:43,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:43,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237055836] [2024-06-04 14:05:43,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237055836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:43,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:43,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:43,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281401397] [2024-06-04 14:05:43,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:43,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:43,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:43,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:43,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:43,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:43,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 147 transitions, 1882 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 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) [2024-06-04 14:05:43,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:43,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:43,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:43,596 INFO L124 PetriNetUnfolderBase]: 382/1030 cut-off events. [2024-06-04 14:05:43,596 INFO L125 PetriNetUnfolderBase]: For 16001/16016 co-relation queries the response was YES. [2024-06-04 14:05:43,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5213 conditions, 1030 events. 382/1030 cut-off events. For 16001/16016 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7219 event pairs, 107 based on Foata normal form. 2/1016 useless extension candidates. Maximal degree in co-relation 4816. Up to 294 conditions per place. [2024-06-04 14:05:43,603 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 70 selfloop transitions, 27 changer transitions 10/155 dead transitions. [2024-06-04 14:05:43,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 155 transitions, 2178 flow [2024-06-04 14:05:43,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:43,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-04 14:05:43,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2024-06-04 14:05:43,605 INFO L175 Difference]: Start difference. First operand has 185 places, 147 transitions, 1882 flow. Second operand 6 states and 127 transitions. [2024-06-04 14:05:43,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 155 transitions, 2178 flow [2024-06-04 14:05:43,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 155 transitions, 2136 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-04 14:05:43,655 INFO L231 Difference]: Finished difference. Result has 186 places, 141 transitions, 1814 flow [2024-06-04 14:05:43,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1840, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1814, PETRI_PLACES=186, PETRI_TRANSITIONS=141} [2024-06-04 14:05:43,655 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 147 predicate places. [2024-06-04 14:05:43,655 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 141 transitions, 1814 flow [2024-06-04 14:05:43,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 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) [2024-06-04 14:05:43,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:43,656 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] [2024-06-04 14:05:43,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 14:05:43,656 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:43,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:43,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1541714512, now seen corresponding path program 2 times [2024-06-04 14:05:43,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:43,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057586817] [2024-06-04 14:05:43,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:43,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:43,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:43,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057586817] [2024-06-04 14:05:43,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057586817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:43,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:43,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:43,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648989049] [2024-06-04 14:05:43,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:43,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:43,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:43,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:43,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:43,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:43,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 141 transitions, 1814 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 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) [2024-06-04 14:05:43,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:43,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:43,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:43,855 INFO L124 PetriNetUnfolderBase]: 351/957 cut-off events. [2024-06-04 14:05:43,855 INFO L125 PetriNetUnfolderBase]: For 15090/15105 co-relation queries the response was YES. [2024-06-04 14:05:43,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4866 conditions, 957 events. 351/957 cut-off events. For 15090/15105 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6618 event pairs, 102 based on Foata normal form. 2/943 useless extension candidates. Maximal degree in co-relation 4508. Up to 276 conditions per place. [2024-06-04 14:05:43,863 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 44 selfloop transitions, 55 changer transitions 0/147 dead transitions. [2024-06-04 14:05:43,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 147 transitions, 2024 flow [2024-06-04 14:05:43,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:43,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-04 14:05:43,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2024-06-04 14:05:43,864 INFO L175 Difference]: Start difference. First operand has 186 places, 141 transitions, 1814 flow. Second operand 6 states and 127 transitions. [2024-06-04 14:05:43,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 147 transitions, 2024 flow [2024-06-04 14:05:43,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 147 transitions, 1910 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 14:05:43,909 INFO L231 Difference]: Finished difference. Result has 177 places, 141 transitions, 1814 flow [2024-06-04 14:05:43,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1700, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1814, PETRI_PLACES=177, PETRI_TRANSITIONS=141} [2024-06-04 14:05:43,910 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 138 predicate places. [2024-06-04 14:05:43,910 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 141 transitions, 1814 flow [2024-06-04 14:05:43,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 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) [2024-06-04 14:05:43,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:43,910 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] [2024-06-04 14:05:43,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 14:05:43,910 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:43,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:43,911 INFO L85 PathProgramCache]: Analyzing trace with hash -596132417, now seen corresponding path program 1 times [2024-06-04 14:05:43,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:43,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925513740] [2024-06-04 14:05:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:43,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:43,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:43,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:43,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925513740] [2024-06-04 14:05:43,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925513740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:43,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:43,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:43,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275020099] [2024-06-04 14:05:43,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:43,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:43,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:43,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:43,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:44,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:44,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 141 transitions, 1814 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 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) [2024-06-04 14:05:44,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:44,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:44,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:44,133 INFO L124 PetriNetUnfolderBase]: 352/951 cut-off events. [2024-06-04 14:05:44,133 INFO L125 PetriNetUnfolderBase]: For 12686/12699 co-relation queries the response was YES. [2024-06-04 14:05:44,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4787 conditions, 951 events. 352/951 cut-off events. For 12686/12699 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6486 event pairs, 50 based on Foata normal form. 2/943 useless extension candidates. Maximal degree in co-relation 4557. Up to 135 conditions per place. [2024-06-04 14:05:44,139 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 49 selfloop transitions, 59 changer transitions 0/156 dead transitions. [2024-06-04 14:05:44,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 156 transitions, 2126 flow [2024-06-04 14:05:44,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:44,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-04 14:05:44,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6008771929824561 [2024-06-04 14:05:44,140 INFO L175 Difference]: Start difference. First operand has 177 places, 141 transitions, 1814 flow. Second operand 6 states and 137 transitions. [2024-06-04 14:05:44,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 156 transitions, 2126 flow [2024-06-04 14:05:44,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 156 transitions, 1999 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 14:05:44,197 INFO L231 Difference]: Finished difference. Result has 176 places, 141 transitions, 1811 flow [2024-06-04 14:05:44,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1811, PETRI_PLACES=176, PETRI_TRANSITIONS=141} [2024-06-04 14:05:44,198 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 137 predicate places. [2024-06-04 14:05:44,198 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 141 transitions, 1811 flow [2024-06-04 14:05:44,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 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) [2024-06-04 14:05:44,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:44,198 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] [2024-06-04 14:05:44,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 14:05:44,198 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:44,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:44,199 INFO L85 PathProgramCache]: Analyzing trace with hash 236410679, now seen corresponding path program 2 times [2024-06-04 14:05:44,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:44,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531299851] [2024-06-04 14:05:44,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:44,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:44,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:44,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531299851] [2024-06-04 14:05:44,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531299851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:44,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:44,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:44,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682841107] [2024-06-04 14:05:44,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:44,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:44,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:44,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:44,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:44,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:44,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 141 transitions, 1811 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 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) [2024-06-04 14:05:44,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:44,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:44,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:44,430 INFO L124 PetriNetUnfolderBase]: 361/972 cut-off events. [2024-06-04 14:05:44,430 INFO L125 PetriNetUnfolderBase]: For 13337/13352 co-relation queries the response was YES. [2024-06-04 14:05:44,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4896 conditions, 972 events. 361/972 cut-off events. For 13337/13352 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6698 event pairs, 53 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 4659. Up to 215 conditions per place. [2024-06-04 14:05:44,437 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 69 selfloop transitions, 26 changer transitions 11/154 dead transitions. [2024-06-04 14:05:44,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 154 transitions, 2129 flow [2024-06-04 14:05:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-04 14:05:44,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745614035087719 [2024-06-04 14:05:44,446 INFO L175 Difference]: Start difference. First operand has 176 places, 141 transitions, 1811 flow. Second operand 6 states and 131 transitions. [2024-06-04 14:05:44,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 154 transitions, 2129 flow [2024-06-04 14:05:44,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 154 transitions, 1949 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 14:05:44,492 INFO L231 Difference]: Finished difference. Result has 174 places, 135 transitions, 1624 flow [2024-06-04 14:05:44,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1624, PETRI_PLACES=174, PETRI_TRANSITIONS=135} [2024-06-04 14:05:44,494 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 135 predicate places. [2024-06-04 14:05:44,494 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 135 transitions, 1624 flow [2024-06-04 14:05:44,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 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) [2024-06-04 14:05:44,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:44,494 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] [2024-06-04 14:05:44,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 14:05:44,494 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:44,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:44,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1403645461, now seen corresponding path program 3 times [2024-06-04 14:05:44,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:44,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773470019] [2024-06-04 14:05:44,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:44,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:44,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:44,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773470019] [2024-06-04 14:05:44,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773470019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:44,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:44,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:44,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284972909] [2024-06-04 14:05:44,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:44,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:44,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:44,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:44,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:44,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:44,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 135 transitions, 1624 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 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) [2024-06-04 14:05:44,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:44,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:44,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:44,710 INFO L124 PetriNetUnfolderBase]: 320/874 cut-off events. [2024-06-04 14:05:44,710 INFO L125 PetriNetUnfolderBase]: For 11154/11167 co-relation queries the response was YES. [2024-06-04 14:05:44,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4206 conditions, 874 events. 320/874 cut-off events. For 11154/11167 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5928 event pairs, 62 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 3979. Up to 211 conditions per place. [2024-06-04 14:05:44,715 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 74 selfloop transitions, 22 changer transitions 8/152 dead transitions. [2024-06-04 14:05:44,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 152 transitions, 1872 flow [2024-06-04 14:05:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:44,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-04 14:05:44,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2024-06-04 14:05:44,716 INFO L175 Difference]: Start difference. First operand has 174 places, 135 transitions, 1624 flow. Second operand 6 states and 136 transitions. [2024-06-04 14:05:44,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 152 transitions, 1872 flow [2024-06-04 14:05:44,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 152 transitions, 1810 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 14:05:44,749 INFO L231 Difference]: Finished difference. Result has 166 places, 130 transitions, 1553 flow [2024-06-04 14:05:44,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1553, PETRI_PLACES=166, PETRI_TRANSITIONS=130} [2024-06-04 14:05:44,749 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 127 predicate places. [2024-06-04 14:05:44,749 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 130 transitions, 1553 flow [2024-06-04 14:05:44,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 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) [2024-06-04 14:05:44,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:44,750 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] [2024-06-04 14:05:44,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 14:05:44,750 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:44,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:44,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1479050676, now seen corresponding path program 1 times [2024-06-04 14:05:44,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:44,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506963857] [2024-06-04 14:05:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:44,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:44,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:44,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506963857] [2024-06-04 14:05:44,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506963857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:44,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:44,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:44,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585630997] [2024-06-04 14:05:44,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:44,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:44,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:44,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:44,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:44,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:44,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 130 transitions, 1553 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 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) [2024-06-04 14:05:44,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:44,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:44,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:44,931 INFO L124 PetriNetUnfolderBase]: 291/790 cut-off events. [2024-06-04 14:05:44,932 INFO L125 PetriNetUnfolderBase]: For 8794/8807 co-relation queries the response was YES. [2024-06-04 14:05:44,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3771 conditions, 790 events. 291/790 cut-off events. For 8794/8807 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5182 event pairs, 22 based on Foata normal form. 4/784 useless extension candidates. Maximal degree in co-relation 3578. Up to 213 conditions per place. [2024-06-04 14:05:44,937 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 40 selfloop transitions, 18 changer transitions 55/144 dead transitions. [2024-06-04 14:05:44,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 144 transitions, 1777 flow [2024-06-04 14:05:44,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:44,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:44,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-04 14:05:44,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2024-06-04 14:05:44,938 INFO L175 Difference]: Start difference. First operand has 166 places, 130 transitions, 1553 flow. Second operand 6 states and 134 transitions. [2024-06-04 14:05:44,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 144 transitions, 1777 flow [2024-06-04 14:05:44,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 144 transitions, 1713 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 14:05:44,979 INFO L231 Difference]: Finished difference. Result has 156 places, 83 transitions, 896 flow [2024-06-04 14:05:44,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=896, PETRI_PLACES=156, PETRI_TRANSITIONS=83} [2024-06-04 14:05:44,983 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 117 predicate places. [2024-06-04 14:05:44,984 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 83 transitions, 896 flow [2024-06-04 14:05:44,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 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) [2024-06-04 14:05:44,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:05:44,985 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] [2024-06-04 14:05:44,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 14:05:44,986 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:05:44,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:05:44,987 INFO L85 PathProgramCache]: Analyzing trace with hash -567285620, now seen corresponding path program 2 times [2024-06-04 14:05:44,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:05:44,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068026209] [2024-06-04 14:05:44,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:05:44,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:05:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:05:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:05:45,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:05:45,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068026209] [2024-06-04 14:05:45,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068026209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:05:45,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:05:45,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:05:45,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464450085] [2024-06-04 14:05:45,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:05:45,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:05:45,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:05:45,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:05:45,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:05:45,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-04 14:05:45,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 83 transitions, 896 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 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) [2024-06-04 14:05:45,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:05:45,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-04 14:05:45,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:05:45,147 INFO L124 PetriNetUnfolderBase]: 161/449 cut-off events. [2024-06-04 14:05:45,147 INFO L125 PetriNetUnfolderBase]: For 4365/4377 co-relation queries the response was YES. [2024-06-04 14:05:45,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2012 conditions, 449 events. 161/449 cut-off events. For 4365/4377 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2528 event pairs, 18 based on Foata normal form. 4/446 useless extension candidates. Maximal degree in co-relation 1955. Up to 80 conditions per place. [2024-06-04 14:05:45,149 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 0 selfloop transitions, 0 changer transitions 88/88 dead transitions. [2024-06-04 14:05:45,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 88 transitions, 970 flow [2024-06-04 14:05:45,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:05:45,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:05:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-04 14:05:45,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-06-04 14:05:45,150 INFO L175 Difference]: Start difference. First operand has 156 places, 83 transitions, 896 flow. Second operand 6 states and 116 transitions. [2024-06-04 14:05:45,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 88 transitions, 970 flow [2024-06-04 14:05:45,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 88 transitions, 687 flow, removed 11 selfloop flow, removed 46 redundant places. [2024-06-04 14:05:45,158 INFO L231 Difference]: Finished difference. Result has 99 places, 0 transitions, 0 flow [2024-06-04 14:05:45,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=99, PETRI_TRANSITIONS=0} [2024-06-04 14:05:45,158 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 60 predicate places. [2024-06-04 14:05:45,158 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 0 transitions, 0 flow [2024-06-04 14:05:45,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 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) [2024-06-04 14:05:45,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 14:05:45,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 14:05:45,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 14:05:45,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 14:05:45,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 14:05:45,164 INFO L445 BasicCegarLoop]: Path program histogram: [6, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:05:45,166 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 14:05:45,166 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 14:05:45,169 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 14:05:45,169 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 14:05:45,170 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 02:05:45 BasicIcfg [2024-06-04 14:05:45,170 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 14:05:45,170 INFO L158 Benchmark]: Toolchain (without parser) took 13402.99ms. Allocated memory was 220.2MB in the beginning and 553.6MB in the end (delta: 333.4MB). Free memory was 141.9MB in the beginning and 435.4MB in the end (delta: -293.6MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2024-06-04 14:05:45,171 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:05:45,171 INFO L158 Benchmark]: Witness Parser took 4.24ms. Allocated memory is still 220.2MB. Free memory is still 145.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:05:45,171 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.62ms. Allocated memory is still 220.2MB. Free memory was 141.9MB in the beginning and 116.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-04 14:05:45,171 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.44ms. Allocated memory is still 220.2MB. Free memory was 116.7MB in the beginning and 114.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 14:05:45,171 INFO L158 Benchmark]: Boogie Preprocessor took 70.78ms. Allocated memory is still 220.2MB. Free memory was 114.6MB in the beginning and 112.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 14:05:45,172 INFO L158 Benchmark]: RCFGBuilder took 348.60ms. Allocated memory is still 220.2MB. Free memory was 112.1MB in the beginning and 90.7MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-04 14:05:45,174 INFO L158 Benchmark]: TraceAbstraction took 12468.09ms. Allocated memory was 220.2MB in the beginning and 553.6MB in the end (delta: 333.4MB). Free memory was 89.9MB in the beginning and 435.4MB in the end (delta: -345.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:05:45,175 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 4.24ms. Allocated memory is still 220.2MB. Free memory is still 145.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 446.62ms. Allocated memory is still 220.2MB. Free memory was 141.9MB in the beginning and 116.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.44ms. Allocated memory is still 220.2MB. Free memory was 116.7MB in the beginning and 114.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.78ms. Allocated memory is still 220.2MB. Free memory was 114.6MB in the beginning and 112.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 348.60ms. Allocated memory is still 220.2MB. Free memory was 112.1MB in the beginning and 90.7MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 12468.09ms. Allocated memory was 220.2MB in the beginning and 553.6MB in the end (delta: 333.4MB). Free memory was 89.9MB in the beginning and 435.4MB in the end (delta: -345.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 762]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 763]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 61 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.4s, OverallIterations: 46, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3565 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2516 mSDsluCounter, 1377 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 965 mSDsCounter, 227 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6043 IncrementalHoareTripleChecker+Invalid, 6270 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 227 mSolverCounterUnsat, 412 mSDtfsCounter, 6043 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2105occurred in iteration=28, InterpolantAutomatonStates: 278, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 788 NumberOfCodeBlocks, 788 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 742 ConstructedInterpolants, 0 QuantifiedInterpolants, 3022 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 46 InterpolantComputations, 46 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-04 14:05:45,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE