./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/szymanski.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/szymanski.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:21:51,978 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:21:52,014 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:21:52,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:21:52,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:21:52,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:21:52,044 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:21:52,045 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:21:52,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:21:52,047 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:21:52,047 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:21:52,048 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:21:52,049 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:21:52,056 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:21:52,056 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:21:52,056 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:21:52,056 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:21:52,057 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:21:52,057 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:21:52,057 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:21:52,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:21:52,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:21:52,059 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:21:52,059 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:21:52,059 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:21:52,060 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:21:52,060 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:21:52,060 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:21:52,060 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:21:52,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:21:52,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:21:52,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:21:52,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:21:52,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:21:52,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:21:52,062 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:21:52,062 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:21:52,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:21:52,063 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:21:52,063 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:21:52,063 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:21:52,063 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:21:52,063 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:21:52,064 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:21:52,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:21:52,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:21:52,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:21:52,295 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:21:52,296 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:21:52,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2024-06-28 02:21:53,281 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:21:53,494 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:21:53,495 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2024-06-28 02:21:53,513 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26aa947ee/f2093d7370f344788dcff4dae3078db6/FLAG042d783a8 [2024-06-28 02:21:53,528 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26aa947ee/f2093d7370f344788dcff4dae3078db6 [2024-06-28 02:21:53,530 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:21:53,531 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:21:53,531 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/szymanski.yml/witness.yml [2024-06-28 02:21:53,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:21:53,613 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:21:53,617 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:21:53,617 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:21:53,620 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:21:53,621 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:21:53" (1/2) ... [2024-06-28 02:21:53,622 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d1534a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:21:53, skipping insertion in model container [2024-06-28 02:21:53,622 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:21:53" (1/2) ... [2024-06-28 02:21:53,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21eacf02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:21:53, skipping insertion in model container [2024-06-28 02:21:53,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:21:53" (2/2) ... [2024-06-28 02:21:53,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d1534a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:53, skipping insertion in model container [2024-06-28 02:21:53,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:21:53" (2/2) ... [2024-06-28 02:21:53,624 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:21:53,650 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:21:53,651 INFO L97 edCorrectnessWitness]: Location invariant before [L820-L820] (((! multithreaded || (((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4))) && (! multithreaded || ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) [2024-06-28 02:21:53,651 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] (((! multithreaded || (((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4) && ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4))) && (! multithreaded || ((((flag1 == 0 || flag1 == 1) || flag1 == 2) || flag1 == 3) || flag1 == 4))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((flag2 == 0 || flag2 == 1) || flag2 == 2) || flag2 == 3) || flag2 == 4)) [2024-06-28 02:21:53,652 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:21:53,652 INFO L106 edCorrectnessWitness]: ghost_update [L818-L818] multithreaded = 1; [2024-06-28 02:21:53,689 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:21:54,002 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:21:54,011 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:21:54,090 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:21:54,122 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:21:54,125 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:54 WrapperNode [2024-06-28 02:21:54,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:21:54,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:21:54,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:21:54,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:21:54,131 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 28.06 02:21:54" (1/1) ... [2024-06-28 02:21:54,156 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 28.06 02:21:54" (1/1) ... [2024-06-28 02:21:54,181 INFO L138 Inliner]: procedures = 169, calls = 66, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 170 [2024-06-28 02:21:54,181 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:21:54,182 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:21:54,182 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:21:54,182 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:21:54,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:54" (1/1) ... [2024-06-28 02:21:54,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:54" (1/1) ... [2024-06-28 02:21:54,200 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:54" (1/1) ... [2024-06-28 02:21:54,220 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]. [2024-06-28 02:21:54,221 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:54" (1/1) ... [2024-06-28 02:21:54,221 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:54" (1/1) ... [2024-06-28 02:21:54,232 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:54" (1/1) ... [2024-06-28 02:21:54,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:54" (1/1) ... [2024-06-28 02:21:54,239 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:54" (1/1) ... [2024-06-28 02:21:54,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:54" (1/1) ... [2024-06-28 02:21:54,245 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:21:54,246 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:21:54,246 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:21:54,246 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:21:54,247 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:54" (1/1) ... [2024-06-28 02:21:54,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:21:54,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:21:54,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:21:54,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:21:54,315 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-06-28 02:21:54,315 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-06-28 02:21:54,315 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-06-28 02:21:54,316 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-06-28 02:21:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:21:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:21:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:21:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:21:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:21:54,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:21:54,318 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:21:54,441 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:21:54,442 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:21:54,646 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:21:54,646 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:21:54,723 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:21:54,724 INFO L320 CfgBuilder]: Removed 8 assume(true) statements. [2024-06-28 02:21:54,726 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:21:54 BoogieIcfgContainer [2024-06-28 02:21:54,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:21:54,729 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:21:54,730 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:21:54,732 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:21:54,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:21:53" (1/4) ... [2024-06-28 02:21:54,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76527956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:21:54, skipping insertion in model container [2024-06-28 02:21:54,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:21:53" (2/4) ... [2024-06-28 02:21:54,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76527956 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:21:54, skipping insertion in model container [2024-06-28 02:21:54,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:21:54" (3/4) ... [2024-06-28 02:21:54,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76527956 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:21:54, skipping insertion in model container [2024-06-28 02:21:54,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:21:54" (4/4) ... [2024-06-28 02:21:54,736 INFO L112 eAbstractionObserver]: Analyzing ICFG szymanski.i [2024-06-28 02:21:54,752 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:21:54,752 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 02:21:54,753 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:21:54,808 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-28 02:21:54,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 67 transitions, 148 flow [2024-06-28 02:21:54,877 INFO L124 PetriNetUnfolderBase]: 10/65 cut-off events. [2024-06-28 02:21:54,878 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-28 02:21:54,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 65 events. 10/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2024-06-28 02:21:54,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 67 transitions, 148 flow [2024-06-28 02:21:54,884 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 63 transitions, 135 flow [2024-06-28 02:21:54,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:21:54,903 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;@31f47baa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:21:54,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 02:21:54,908 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:21:54,908 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:21:54,908 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:21:54,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:54,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:21:54,910 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)] === [2024-06-28 02:21:54,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:54,917 INFO L85 PathProgramCache]: Analyzing trace with hash 304155473, now seen corresponding path program 1 times [2024-06-28 02:21:54,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:54,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879714469] [2024-06-28 02:21:54,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:54,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:55,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:55,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879714469] [2024-06-28 02:21:55,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879714469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:55,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:55,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:21:55,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432208748] [2024-06-28 02:21:55,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:55,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:21:55,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:55,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:21:55,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:21:55,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 67 [2024-06-28 02:21:55,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:55,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:55,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 67 [2024-06-28 02:21:55,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:55,525 INFO L124 PetriNetUnfolderBase]: 616/1312 cut-off events. [2024-06-28 02:21:55,526 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-28 02:21:55,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2155 conditions, 1312 events. 616/1312 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 7690 event pairs, 292 based on Foata normal form. 1/1259 useless extension candidates. Maximal degree in co-relation 2097. Up to 805 conditions per place. [2024-06-28 02:21:55,537 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 30 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2024-06-28 02:21:55,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 216 flow [2024-06-28 02:21:55,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:21:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:21:55,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-06-28 02:21:55,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412935323383084 [2024-06-28 02:21:55,549 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 135 flow. Second operand 3 states and 149 transitions. [2024-06-28 02:21:55,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 216 flow [2024-06-28 02:21:55,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 210 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:21:55,561 INFO L231 Difference]: Finished difference. Result has 60 places, 65 transitions, 151 flow [2024-06-28 02:21:55,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=60, PETRI_TRANSITIONS=65} [2024-06-28 02:21:55,565 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2024-06-28 02:21:55,565 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 65 transitions, 151 flow [2024-06-28 02:21:55,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:55,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:55,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:55,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:21:55,566 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)] === [2024-06-28 02:21:55,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:55,566 INFO L85 PathProgramCache]: Analyzing trace with hash 235692848, now seen corresponding path program 1 times [2024-06-28 02:21:55,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:55,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13703728] [2024-06-28 02:21:55,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:55,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:55,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:55,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13703728] [2024-06-28 02:21:55,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13703728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:55,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:55,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:21:55,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430175965] [2024-06-28 02:21:55,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:55,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:21:55,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:55,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:21:55,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:21:55,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2024-06-28 02:21:55,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 65 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:55,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:55,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2024-06-28 02:21:55,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:55,854 INFO L124 PetriNetUnfolderBase]: 672/1435 cut-off events. [2024-06-28 02:21:55,854 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-06-28 02:21:55,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2517 conditions, 1435 events. 672/1435 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8610 event pairs, 122 based on Foata normal form. 4/1394 useless extension candidates. Maximal degree in co-relation 1842. Up to 752 conditions per place. [2024-06-28 02:21:55,862 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 40 selfloop transitions, 6 changer transitions 1/82 dead transitions. [2024-06-28 02:21:55,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 82 transitions, 286 flow [2024-06-28 02:21:55,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:21:55,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:21:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2024-06-28 02:21:55,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7313432835820896 [2024-06-28 02:21:55,864 INFO L175 Difference]: Start difference. First operand has 60 places, 65 transitions, 151 flow. Second operand 4 states and 196 transitions. [2024-06-28 02:21:55,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 82 transitions, 286 flow [2024-06-28 02:21:55,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 82 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:21:55,869 INFO L231 Difference]: Finished difference. Result has 63 places, 67 transitions, 175 flow [2024-06-28 02:21:55,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=63, PETRI_TRANSITIONS=67} [2024-06-28 02:21:55,870 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 3 predicate places. [2024-06-28 02:21:55,871 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 67 transitions, 175 flow [2024-06-28 02:21:55,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:55,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:55,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:55,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:21:55,872 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)] === [2024-06-28 02:21:55,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:55,874 INFO L85 PathProgramCache]: Analyzing trace with hash 964039940, now seen corresponding path program 1 times [2024-06-28 02:21:55,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:55,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869251755] [2024-06-28 02:21:55,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:55,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:56,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:56,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869251755] [2024-06-28 02:21:56,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869251755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:56,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:56,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:21:56,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233973498] [2024-06-28 02:21:56,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:56,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:21:56,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:56,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:21:56,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:21:56,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2024-06-28 02:21:56,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 67 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:56,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:56,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2024-06-28 02:21:56,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:56,199 INFO L124 PetriNetUnfolderBase]: 676/1460 cut-off events. [2024-06-28 02:21:56,199 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2024-06-28 02:21:56,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2704 conditions, 1460 events. 676/1460 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8747 event pairs, 123 based on Foata normal form. 2/1420 useless extension candidates. Maximal degree in co-relation 2005. Up to 751 conditions per place. [2024-06-28 02:21:56,209 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 40 selfloop transitions, 8 changer transitions 1/84 dead transitions. [2024-06-28 02:21:56,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 84 transitions, 318 flow [2024-06-28 02:21:56,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:21:56,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:21:56,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2024-06-28 02:21:56,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7350746268656716 [2024-06-28 02:21:56,214 INFO L175 Difference]: Start difference. First operand has 63 places, 67 transitions, 175 flow. Second operand 4 states and 197 transitions. [2024-06-28 02:21:56,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 84 transitions, 318 flow [2024-06-28 02:21:56,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 84 transitions, 311 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 02:21:56,218 INFO L231 Difference]: Finished difference. Result has 66 places, 70 transitions, 206 flow [2024-06-28 02:21:56,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=66, PETRI_TRANSITIONS=70} [2024-06-28 02:21:56,219 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 6 predicate places. [2024-06-28 02:21:56,219 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 70 transitions, 206 flow [2024-06-28 02:21:56,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:56,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:56,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:56,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:21:56,220 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)] === [2024-06-28 02:21:56,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:56,221 INFO L85 PathProgramCache]: Analyzing trace with hash -2121866509, now seen corresponding path program 1 times [2024-06-28 02:21:56,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:56,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453393755] [2024-06-28 02:21:56,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:56,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:56,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:56,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453393755] [2024-06-28 02:21:56,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453393755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:56,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:56,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:21:56,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935689439] [2024-06-28 02:21:56,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:56,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:21:56,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:56,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:21:56,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:21:56,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2024-06-28 02:21:56,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 70 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:56,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:56,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2024-06-28 02:21:56,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:56,480 INFO L124 PetriNetUnfolderBase]: 667/1384 cut-off events. [2024-06-28 02:21:56,481 INFO L125 PetriNetUnfolderBase]: For 855/863 co-relation queries the response was YES. [2024-06-28 02:21:56,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2840 conditions, 1384 events. 667/1384 cut-off events. For 855/863 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8122 event pairs, 239 based on Foata normal form. 2/1337 useless extension candidates. Maximal degree in co-relation 2566. Up to 849 conditions per place. [2024-06-28 02:21:56,489 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 42 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2024-06-28 02:21:56,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 84 transitions, 344 flow [2024-06-28 02:21:56,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:21:56,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:21:56,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-06-28 02:21:56,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164179104477612 [2024-06-28 02:21:56,491 INFO L175 Difference]: Start difference. First operand has 66 places, 70 transitions, 206 flow. Second operand 4 states and 192 transitions. [2024-06-28 02:21:56,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 84 transitions, 344 flow [2024-06-28 02:21:56,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 84 transitions, 337 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 02:21:56,495 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 242 flow [2024-06-28 02:21:56,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-06-28 02:21:56,496 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2024-06-28 02:21:56,496 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 242 flow [2024-06-28 02:21:56,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:56,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:56,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:56,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:21:56,497 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)] === [2024-06-28 02:21:56,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:56,498 INFO L85 PathProgramCache]: Analyzing trace with hash -281575216, now seen corresponding path program 1 times [2024-06-28 02:21:56,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:56,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578495211] [2024-06-28 02:21:56,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:56,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:56,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:56,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:56,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578495211] [2024-06-28 02:21:56,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578495211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:56,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:56,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:21:56,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247562084] [2024-06-28 02:21:56,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:56,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:21:56,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:56,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:21:56,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:21:56,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:21:56,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:56,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:56,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:21:56,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:56,757 INFO L124 PetriNetUnfolderBase]: 786/1570 cut-off events. [2024-06-28 02:21:56,758 INFO L125 PetriNetUnfolderBase]: For 1611/1611 co-relation queries the response was YES. [2024-06-28 02:21:56,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3579 conditions, 1570 events. 786/1570 cut-off events. For 1611/1611 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9187 event pairs, 264 based on Foata normal form. 4/1516 useless extension candidates. Maximal degree in co-relation 2634. Up to 646 conditions per place. [2024-06-28 02:21:56,766 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 58 selfloop transitions, 13 changer transitions 0/105 dead transitions. [2024-06-28 02:21:56,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 105 transitions, 479 flow [2024-06-28 02:21:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:21:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:21:56,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 243 transitions. [2024-06-28 02:21:56,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7253731343283583 [2024-06-28 02:21:56,768 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 242 flow. Second operand 5 states and 243 transitions. [2024-06-28 02:21:56,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 105 transitions, 479 flow [2024-06-28 02:21:56,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 105 transitions, 477 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 02:21:56,773 INFO L231 Difference]: Finished difference. Result has 76 places, 79 transitions, 300 flow [2024-06-28 02:21:56,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=76, PETRI_TRANSITIONS=79} [2024-06-28 02:21:56,778 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 16 predicate places. [2024-06-28 02:21:56,779 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 79 transitions, 300 flow [2024-06-28 02:21:56,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:56,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:56,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:56,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:21:56,781 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)] === [2024-06-28 02:21:56,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:56,781 INFO L85 PathProgramCache]: Analyzing trace with hash -834636588, now seen corresponding path program 2 times [2024-06-28 02:21:56,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:56,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601838024] [2024-06-28 02:21:56,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:56,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:56,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:56,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601838024] [2024-06-28 02:21:56,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601838024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:56,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:56,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:21:56,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062846083] [2024-06-28 02:21:56,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:56,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:21:56,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:56,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:21:56,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:21:56,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:21:56,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 79 transitions, 300 flow. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:56,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:56,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:21:56,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:57,039 INFO L124 PetriNetUnfolderBase]: 805/1614 cut-off events. [2024-06-28 02:21:57,040 INFO L125 PetriNetUnfolderBase]: For 2567/2575 co-relation queries the response was YES. [2024-06-28 02:21:57,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3923 conditions, 1614 events. 805/1614 cut-off events. For 2567/2575 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9332 event pairs, 215 based on Foata normal form. 12/1569 useless extension candidates. Maximal degree in co-relation 3473. Up to 589 conditions per place. [2024-06-28 02:21:57,047 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 59 selfloop transitions, 15 changer transitions 0/108 dead transitions. [2024-06-28 02:21:57,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 108 transitions, 546 flow [2024-06-28 02:21:57,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:21:57,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:21:57,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 244 transitions. [2024-06-28 02:21:57,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7283582089552239 [2024-06-28 02:21:57,049 INFO L175 Difference]: Start difference. First operand has 76 places, 79 transitions, 300 flow. Second operand 5 states and 244 transitions. [2024-06-28 02:21:57,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 108 transitions, 546 flow [2024-06-28 02:21:57,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 108 transitions, 540 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-28 02:21:57,052 INFO L231 Difference]: Finished difference. Result has 81 places, 81 transitions, 343 flow [2024-06-28 02:21:57,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=81, PETRI_TRANSITIONS=81} [2024-06-28 02:21:57,053 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 21 predicate places. [2024-06-28 02:21:57,053 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 81 transitions, 343 flow [2024-06-28 02:21:57,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:57,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:57,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:57,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:21:57,054 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)] === [2024-06-28 02:21:57,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:57,054 INFO L85 PathProgramCache]: Analyzing trace with hash 932536177, now seen corresponding path program 1 times [2024-06-28 02:21:57,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:57,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479079363] [2024-06-28 02:21:57,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:57,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:57,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:57,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:57,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479079363] [2024-06-28 02:21:57,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479079363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:57,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:57,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:21:57,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136604294] [2024-06-28 02:21:57,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:57,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:21:57,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:57,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:21:57,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:21:57,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 67 [2024-06-28 02:21:57,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 81 transitions, 343 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:57,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:57,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 67 [2024-06-28 02:21:57,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:57,331 INFO L124 PetriNetUnfolderBase]: 1309/2777 cut-off events. [2024-06-28 02:21:57,331 INFO L125 PetriNetUnfolderBase]: For 2488/2524 co-relation queries the response was YES. [2024-06-28 02:21:57,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5890 conditions, 2777 events. 1309/2777 cut-off events. For 2488/2524 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 18893 event pairs, 286 based on Foata normal form. 59/2652 useless extension candidates. Maximal degree in co-relation 5708. Up to 1007 conditions per place. [2024-06-28 02:21:57,351 INFO L140 encePairwiseOnDemand]: 50/67 looper letters, 78 selfloop transitions, 20 changer transitions 2/136 dead transitions. [2024-06-28 02:21:57,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 136 transitions, 705 flow [2024-06-28 02:21:57,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:21:57,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:21:57,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 246 transitions. [2024-06-28 02:21:57,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7343283582089553 [2024-06-28 02:21:57,352 INFO L175 Difference]: Start difference. First operand has 81 places, 81 transitions, 343 flow. Second operand 5 states and 246 transitions. [2024-06-28 02:21:57,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 136 transitions, 705 flow [2024-06-28 02:21:57,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 136 transitions, 668 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 02:21:57,359 INFO L231 Difference]: Finished difference. Result has 86 places, 94 transitions, 464 flow [2024-06-28 02:21:57,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=464, PETRI_PLACES=86, PETRI_TRANSITIONS=94} [2024-06-28 02:21:57,362 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 26 predicate places. [2024-06-28 02:21:57,362 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 94 transitions, 464 flow [2024-06-28 02:21:57,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:57,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:57,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:57,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:21:57,363 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:21:57,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:57,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2138090317, now seen corresponding path program 1 times [2024-06-28 02:21:57,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:57,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156810703] [2024-06-28 02:21:57,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:57,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:57,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:57,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:57,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156810703] [2024-06-28 02:21:57,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156810703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:57,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:57,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:21:57,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502213204] [2024-06-28 02:21:57,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:57,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:21:57,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:57,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:21:57,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:21:57,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2024-06-28 02:21:57,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 94 transitions, 464 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:57,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:57,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2024-06-28 02:21:57,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:57,658 INFO L124 PetriNetUnfolderBase]: 1253/2537 cut-off events. [2024-06-28 02:21:57,658 INFO L125 PetriNetUnfolderBase]: For 5722/5754 co-relation queries the response was YES. [2024-06-28 02:21:57,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6758 conditions, 2537 events. 1253/2537 cut-off events. For 5722/5754 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 16660 event pairs, 485 based on Foata normal form. 6/2432 useless extension candidates. Maximal degree in co-relation 6305. Up to 1634 conditions per place. [2024-06-28 02:21:57,676 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 50 selfloop transitions, 9 changer transitions 0/107 dead transitions. [2024-06-28 02:21:57,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 107 transitions, 634 flow [2024-06-28 02:21:57,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:21:57,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:21:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2024-06-28 02:21:57,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7238805970149254 [2024-06-28 02:21:57,677 INFO L175 Difference]: Start difference. First operand has 86 places, 94 transitions, 464 flow. Second operand 4 states and 194 transitions. [2024-06-28 02:21:57,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 107 transitions, 634 flow [2024-06-28 02:21:57,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 107 transitions, 634 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 02:21:57,683 INFO L231 Difference]: Finished difference. Result has 90 places, 96 transitions, 504 flow [2024-06-28 02:21:57,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=504, PETRI_PLACES=90, PETRI_TRANSITIONS=96} [2024-06-28 02:21:57,684 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 30 predicate places. [2024-06-28 02:21:57,684 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 96 transitions, 504 flow [2024-06-28 02:21:57,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:57,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:57,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:57,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:21:57,685 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)] === [2024-06-28 02:21:57,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:57,685 INFO L85 PathProgramCache]: Analyzing trace with hash 805194971, now seen corresponding path program 1 times [2024-06-28 02:21:57,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:57,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913967311] [2024-06-28 02:21:57,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:57,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:57,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:57,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913967311] [2024-06-28 02:21:57,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913967311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:57,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:57,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:21:57,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484469460] [2024-06-28 02:21:57,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:57,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:21:57,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:57,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:21:57,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:21:57,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2024-06-28 02:21:57,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 96 transitions, 504 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:57,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:57,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2024-06-28 02:21:57,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:57,965 INFO L124 PetriNetUnfolderBase]: 1299/2655 cut-off events. [2024-06-28 02:21:57,965 INFO L125 PetriNetUnfolderBase]: For 7782/7820 co-relation queries the response was YES. [2024-06-28 02:21:57,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7427 conditions, 2655 events. 1299/2655 cut-off events. For 7782/7820 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 17390 event pairs, 542 based on Foata normal form. 1/2525 useless extension candidates. Maximal degree in co-relation 7189. Up to 1743 conditions per place. [2024-06-28 02:21:57,981 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 51 selfloop transitions, 9 changer transitions 0/108 dead transitions. [2024-06-28 02:21:57,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 108 transitions, 671 flow [2024-06-28 02:21:57,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:21:57,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:21:57,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2024-06-28 02:21:57,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7201492537313433 [2024-06-28 02:21:57,984 INFO L175 Difference]: Start difference. First operand has 90 places, 96 transitions, 504 flow. Second operand 4 states and 193 transitions. [2024-06-28 02:21:57,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 108 transitions, 671 flow [2024-06-28 02:21:57,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 108 transitions, 662 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 02:21:57,991 INFO L231 Difference]: Finished difference. Result has 93 places, 99 transitions, 536 flow [2024-06-28 02:21:57,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=536, PETRI_PLACES=93, PETRI_TRANSITIONS=99} [2024-06-28 02:21:57,992 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 33 predicate places. [2024-06-28 02:21:57,993 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 99 transitions, 536 flow [2024-06-28 02:21:57,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:57,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:57,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:57,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:21:57,993 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)] === [2024-06-28 02:21:57,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:57,994 INFO L85 PathProgramCache]: Analyzing trace with hash 467124902, now seen corresponding path program 1 times [2024-06-28 02:21:57,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:57,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880586314] [2024-06-28 02:21:57,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:57,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:58,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:58,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:58,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880586314] [2024-06-28 02:21:58,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880586314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:58,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:58,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:21:58,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476473657] [2024-06-28 02:21:58,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:58,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:21:58,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:58,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:21:58,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:21:58,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:21:58,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 99 transitions, 536 flow. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:58,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:58,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:21:58,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:58,327 INFO L124 PetriNetUnfolderBase]: 1369/2774 cut-off events. [2024-06-28 02:21:58,327 INFO L125 PetriNetUnfolderBase]: For 9874/9927 co-relation queries the response was YES. [2024-06-28 02:21:58,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8144 conditions, 2774 events. 1369/2774 cut-off events. For 9874/9927 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 18202 event pairs, 462 based on Foata normal form. 4/2666 useless extension candidates. Maximal degree in co-relation 7597. Up to 1091 conditions per place. [2024-06-28 02:21:58,346 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 67 selfloop transitions, 17 changer transitions 0/130 dead transitions. [2024-06-28 02:21:58,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 130 transitions, 841 flow [2024-06-28 02:21:58,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:21:58,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:21:58,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 244 transitions. [2024-06-28 02:21:58,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7283582089552239 [2024-06-28 02:21:58,347 INFO L175 Difference]: Start difference. First operand has 93 places, 99 transitions, 536 flow. Second operand 5 states and 244 transitions. [2024-06-28 02:21:58,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 130 transitions, 841 flow [2024-06-28 02:21:58,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 130 transitions, 833 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 02:21:58,355 INFO L231 Difference]: Finished difference. Result has 98 places, 105 transitions, 616 flow [2024-06-28 02:21:58,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=616, PETRI_PLACES=98, PETRI_TRANSITIONS=105} [2024-06-28 02:21:58,356 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 38 predicate places. [2024-06-28 02:21:58,357 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 105 transitions, 616 flow [2024-06-28 02:21:58,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:58,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:58,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:58,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:21:58,358 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)] === [2024-06-28 02:21:58,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:58,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1843394658, now seen corresponding path program 2 times [2024-06-28 02:21:58,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:58,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13787651] [2024-06-28 02:21:58,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:58,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:58,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:58,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13787651] [2024-06-28 02:21:58,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13787651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:58,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:58,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:21:58,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084685917] [2024-06-28 02:21:58,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:58,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:21:58,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:58,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:21:58,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:21:58,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:21:58,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 105 transitions, 616 flow. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:58,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:58,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:21:58,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:58,738 INFO L124 PetriNetUnfolderBase]: 1400/2711 cut-off events. [2024-06-28 02:21:58,738 INFO L125 PetriNetUnfolderBase]: For 13326/13402 co-relation queries the response was YES. [2024-06-28 02:21:58,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9074 conditions, 2711 events. 1400/2711 cut-off events. For 13326/13402 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 17170 event pairs, 424 based on Foata normal form. 4/2609 useless extension candidates. Maximal degree in co-relation 8539. Up to 1002 conditions per place. [2024-06-28 02:21:58,758 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 65 selfloop transitions, 22 changer transitions 0/133 dead transitions. [2024-06-28 02:21:58,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 133 transitions, 930 flow [2024-06-28 02:21:58,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:21:58,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:21:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 244 transitions. [2024-06-28 02:21:58,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7283582089552239 [2024-06-28 02:21:58,760 INFO L175 Difference]: Start difference. First operand has 98 places, 105 transitions, 616 flow. Second operand 5 states and 244 transitions. [2024-06-28 02:21:58,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 133 transitions, 930 flow [2024-06-28 02:21:58,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 133 transitions, 920 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-28 02:21:58,773 INFO L231 Difference]: Finished difference. Result has 103 places, 108 transitions, 684 flow [2024-06-28 02:21:58,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=684, PETRI_PLACES=103, PETRI_TRANSITIONS=108} [2024-06-28 02:21:58,774 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 43 predicate places. [2024-06-28 02:21:58,774 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 108 transitions, 684 flow [2024-06-28 02:21:58,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:58,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:58,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:58,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:21:58,775 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)] === [2024-06-28 02:21:58,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:58,775 INFO L85 PathProgramCache]: Analyzing trace with hash 739008706, now seen corresponding path program 1 times [2024-06-28 02:21:58,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:58,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14396094] [2024-06-28 02:21:58,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:58,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:58,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:58,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14396094] [2024-06-28 02:21:58,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14396094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:58,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:58,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:21:58,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805342778] [2024-06-28 02:21:58,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:58,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:21:58,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:58,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:21:58,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:21:58,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:21:58,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 108 transitions, 684 flow. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:58,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:58,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:21:58,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:59,091 INFO L124 PetriNetUnfolderBase]: 1368/2741 cut-off events. [2024-06-28 02:21:59,091 INFO L125 PetriNetUnfolderBase]: For 15703/15744 co-relation queries the response was YES. [2024-06-28 02:21:59,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9169 conditions, 2741 events. 1368/2741 cut-off events. For 15703/15744 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 17885 event pairs, 456 based on Foata normal form. 12/2645 useless extension candidates. Maximal degree in co-relation 6798. Up to 1054 conditions per place. [2024-06-28 02:21:59,132 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 70 selfloop transitions, 19 changer transitions 0/135 dead transitions. [2024-06-28 02:21:59,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 135 transitions, 993 flow [2024-06-28 02:21:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:21:59,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:21:59,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 243 transitions. [2024-06-28 02:21:59,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7253731343283583 [2024-06-28 02:21:59,134 INFO L175 Difference]: Start difference. First operand has 103 places, 108 transitions, 684 flow. Second operand 5 states and 243 transitions. [2024-06-28 02:21:59,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 135 transitions, 993 flow [2024-06-28 02:21:59,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 135 transitions, 959 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-28 02:21:59,147 INFO L231 Difference]: Finished difference. Result has 106 places, 111 transitions, 718 flow [2024-06-28 02:21:59,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=718, PETRI_PLACES=106, PETRI_TRANSITIONS=111} [2024-06-28 02:21:59,148 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 46 predicate places. [2024-06-28 02:21:59,148 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 111 transitions, 718 flow [2024-06-28 02:21:59,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:59,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:59,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:59,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:21:59,149 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)] === [2024-06-28 02:21:59,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:59,149 INFO L85 PathProgramCache]: Analyzing trace with hash -648454954, now seen corresponding path program 2 times [2024-06-28 02:21:59,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:59,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984499313] [2024-06-28 02:21:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:59,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:59,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:59,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:59,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984499313] [2024-06-28 02:21:59,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984499313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:59,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:59,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:21:59,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271177096] [2024-06-28 02:21:59,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:59,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:21:59,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:59,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:21:59,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:21:59,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:21:59,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 111 transitions, 718 flow. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:59,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:59,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:21:59,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:59,455 INFO L124 PetriNetUnfolderBase]: 1428/2883 cut-off events. [2024-06-28 02:21:59,456 INFO L125 PetriNetUnfolderBase]: For 19147/19200 co-relation queries the response was YES. [2024-06-28 02:21:59,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10088 conditions, 2883 events. 1428/2883 cut-off events. For 19147/19200 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 18947 event pairs, 458 based on Foata normal form. 10/2810 useless extension candidates. Maximal degree in co-relation 9423. Up to 1156 conditions per place. [2024-06-28 02:21:59,478 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 74 selfloop transitions, 22 changer transitions 0/142 dead transitions. [2024-06-28 02:21:59,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 142 transitions, 1084 flow [2024-06-28 02:21:59,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:21:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:21:59,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 245 transitions. [2024-06-28 02:21:59,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7313432835820896 [2024-06-28 02:21:59,480 INFO L175 Difference]: Start difference. First operand has 106 places, 111 transitions, 718 flow. Second operand 5 states and 245 transitions. [2024-06-28 02:21:59,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 142 transitions, 1084 flow [2024-06-28 02:21:59,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 142 transitions, 1055 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 02:21:59,497 INFO L231 Difference]: Finished difference. Result has 109 places, 115 transitions, 774 flow [2024-06-28 02:21:59,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=774, PETRI_PLACES=109, PETRI_TRANSITIONS=115} [2024-06-28 02:21:59,497 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 49 predicate places. [2024-06-28 02:21:59,497 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 115 transitions, 774 flow [2024-06-28 02:21:59,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:59,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:21:59,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:21:59,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:21:59,498 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)] === [2024-06-28 02:21:59,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:21:59,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1372150578, now seen corresponding path program 1 times [2024-06-28 02:21:59,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:21:59,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707567305] [2024-06-28 02:21:59,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:21:59,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:21:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:21:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:21:59,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:21:59,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707567305] [2024-06-28 02:21:59,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707567305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:21:59,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:21:59,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:21:59,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723208308] [2024-06-28 02:21:59,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:21:59,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:21:59,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:21:59,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:21:59,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:21:59,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 67 [2024-06-28 02:21:59,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 115 transitions, 774 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:21:59,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:21:59,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 67 [2024-06-28 02:21:59,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:21:59,884 INFO L124 PetriNetUnfolderBase]: 2236/4439 cut-off events. [2024-06-28 02:21:59,884 INFO L125 PetriNetUnfolderBase]: For 15959/16287 co-relation queries the response was YES. [2024-06-28 02:21:59,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13839 conditions, 4439 events. 2236/4439 cut-off events. For 15959/16287 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 32340 event pairs, 544 based on Foata normal form. 80/4125 useless extension candidates. Maximal degree in co-relation 13540. Up to 1850 conditions per place. [2024-06-28 02:21:59,921 INFO L140 encePairwiseOnDemand]: 50/67 looper letters, 95 selfloop transitions, 22 changer transitions 1/175 dead transitions. [2024-06-28 02:21:59,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 175 transitions, 1278 flow [2024-06-28 02:21:59,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:21:59,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:21:59,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 244 transitions. [2024-06-28 02:21:59,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7283582089552239 [2024-06-28 02:21:59,922 INFO L175 Difference]: Start difference. First operand has 109 places, 115 transitions, 774 flow. Second operand 5 states and 244 transitions. [2024-06-28 02:21:59,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 175 transitions, 1278 flow [2024-06-28 02:21:59,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 175 transitions, 1250 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:00,008 INFO L231 Difference]: Finished difference. Result has 115 places, 128 transitions, 911 flow [2024-06-28 02:22:00,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=911, PETRI_PLACES=115, PETRI_TRANSITIONS=128} [2024-06-28 02:22:00,009 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 55 predicate places. [2024-06-28 02:22:00,009 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 128 transitions, 911 flow [2024-06-28 02:22:00,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:00,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:00,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:00,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:22:00,010 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)] === [2024-06-28 02:22:00,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:00,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1558870414, now seen corresponding path program 1 times [2024-06-28 02:22:00,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:00,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580659954] [2024-06-28 02:22:00,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:00,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:00,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:00,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580659954] [2024-06-28 02:22:00,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580659954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:00,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:00,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:22:00,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498095042] [2024-06-28 02:22:00,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:00,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:22:00,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:00,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:22:00,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:22:00,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2024-06-28 02:22:00,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 128 transitions, 911 flow. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:00,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:00,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2024-06-28 02:22:00,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:00,492 INFO L124 PetriNetUnfolderBase]: 2095/4270 cut-off events. [2024-06-28 02:22:00,493 INFO L125 PetriNetUnfolderBase]: For 36450/36555 co-relation queries the response was YES. [2024-06-28 02:22:00,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17250 conditions, 4270 events. 2095/4270 cut-off events. For 36450/36555 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 31017 event pairs, 852 based on Foata normal form. 3/4189 useless extension candidates. Maximal degree in co-relation 16977. Up to 2873 conditions per place. [2024-06-28 02:22:00,527 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 65 selfloop transitions, 8 changer transitions 0/134 dead transitions. [2024-06-28 02:22:00,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 134 transitions, 1071 flow [2024-06-28 02:22:00,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:22:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:22:00,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2024-06-28 02:22:00,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7052238805970149 [2024-06-28 02:22:00,529 INFO L175 Difference]: Start difference. First operand has 115 places, 128 transitions, 911 flow. Second operand 4 states and 189 transitions. [2024-06-28 02:22:00,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 134 transitions, 1071 flow [2024-06-28 02:22:00,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 134 transitions, 1071 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 02:22:00,553 INFO L231 Difference]: Finished difference. Result has 119 places, 128 transitions, 932 flow [2024-06-28 02:22:00,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=932, PETRI_PLACES=119, PETRI_TRANSITIONS=128} [2024-06-28 02:22:00,554 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 59 predicate places. [2024-06-28 02:22:00,554 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 128 transitions, 932 flow [2024-06-28 02:22:00,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:00,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:00,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:00,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:22:00,554 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)] === [2024-06-28 02:22:00,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:00,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1288571381, now seen corresponding path program 1 times [2024-06-28 02:22:00,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:00,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758911407] [2024-06-28 02:22:00,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:00,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:00,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:00,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:00,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758911407] [2024-06-28 02:22:00,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758911407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:00,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:00,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:00,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772108964] [2024-06-28 02:22:00,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:00,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:00,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:00,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:00,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:00,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:00,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 128 transitions, 932 flow. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:00,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:00,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:00,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:01,070 INFO L124 PetriNetUnfolderBase]: 2197/4383 cut-off events. [2024-06-28 02:22:01,071 INFO L125 PetriNetUnfolderBase]: For 42168/42288 co-relation queries the response was YES. [2024-06-28 02:22:01,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18080 conditions, 4383 events. 2197/4383 cut-off events. For 42168/42288 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 31056 event pairs, 710 based on Foata normal form. 16/4324 useless extension candidates. Maximal degree in co-relation 12773. Up to 1452 conditions per place. [2024-06-28 02:22:01,110 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 87 selfloop transitions, 18 changer transitions 0/163 dead transitions. [2024-06-28 02:22:01,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 163 transitions, 1359 flow [2024-06-28 02:22:01,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:01,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 246 transitions. [2024-06-28 02:22:01,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7343283582089553 [2024-06-28 02:22:01,112 INFO L175 Difference]: Start difference. First operand has 119 places, 128 transitions, 932 flow. Second operand 5 states and 246 transitions. [2024-06-28 02:22:01,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 163 transitions, 1359 flow [2024-06-28 02:22:01,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 163 transitions, 1329 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:01,145 INFO L231 Difference]: Finished difference. Result has 122 places, 134 transitions, 1031 flow [2024-06-28 02:22:01,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1031, PETRI_PLACES=122, PETRI_TRANSITIONS=134} [2024-06-28 02:22:01,146 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 62 predicate places. [2024-06-28 02:22:01,146 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 134 transitions, 1031 flow [2024-06-28 02:22:01,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:01,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:01,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:01,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:22:01,147 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)] === [2024-06-28 02:22:01,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:01,148 INFO L85 PathProgramCache]: Analyzing trace with hash 553288941, now seen corresponding path program 2 times [2024-06-28 02:22:01,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:01,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541744782] [2024-06-28 02:22:01,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:01,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:01,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:01,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541744782] [2024-06-28 02:22:01,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541744782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:01,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:01,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:01,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670987458] [2024-06-28 02:22:01,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:01,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:01,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:01,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:01,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:01,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:01,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 134 transitions, 1031 flow. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:01,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:01,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:01,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:01,699 INFO L124 PetriNetUnfolderBase]: 2222/4354 cut-off events. [2024-06-28 02:22:01,699 INFO L125 PetriNetUnfolderBase]: For 50382/50531 co-relation queries the response was YES. [2024-06-28 02:22:01,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19410 conditions, 4354 events. 2222/4354 cut-off events. For 50382/50531 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 30533 event pairs, 772 based on Foata normal form. 16/4250 useless extension candidates. Maximal degree in co-relation 13653. Up to 1594 conditions per place. [2024-06-28 02:22:01,736 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 79 selfloop transitions, 26 changer transitions 0/163 dead transitions. [2024-06-28 02:22:01,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 163 transitions, 1430 flow [2024-06-28 02:22:01,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:01,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:01,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 245 transitions. [2024-06-28 02:22:01,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7313432835820896 [2024-06-28 02:22:01,738 INFO L175 Difference]: Start difference. First operand has 122 places, 134 transitions, 1031 flow. Second operand 5 states and 245 transitions. [2024-06-28 02:22:01,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 163 transitions, 1430 flow [2024-06-28 02:22:01,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 163 transitions, 1411 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:01,775 INFO L231 Difference]: Finished difference. Result has 127 places, 138 transitions, 1145 flow [2024-06-28 02:22:01,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1145, PETRI_PLACES=127, PETRI_TRANSITIONS=138} [2024-06-28 02:22:01,775 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 67 predicate places. [2024-06-28 02:22:01,775 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 138 transitions, 1145 flow [2024-06-28 02:22:01,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:01,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:01,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:01,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:22:01,776 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)] === [2024-06-28 02:22:01,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:01,777 INFO L85 PathProgramCache]: Analyzing trace with hash -422811252, now seen corresponding path program 1 times [2024-06-28 02:22:01,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:01,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653919037] [2024-06-28 02:22:01,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:01,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:01,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:01,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653919037] [2024-06-28 02:22:01,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653919037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:01,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:01,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:01,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628216242] [2024-06-28 02:22:01,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:01,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:22:01,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:01,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:22:01,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:22:01,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 67 [2024-06-28 02:22:01,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 138 transitions, 1145 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:01,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:01,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 67 [2024-06-28 02:22:01,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:02,228 INFO L124 PetriNetUnfolderBase]: 2189/4518 cut-off events. [2024-06-28 02:22:02,228 INFO L125 PetriNetUnfolderBase]: For 28626/29051 co-relation queries the response was YES. [2024-06-28 02:22:02,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17264 conditions, 4518 events. 2189/4518 cut-off events. For 28626/29051 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 33624 event pairs, 986 based on Foata normal form. 130/4396 useless extension candidates. Maximal degree in co-relation 12955. Up to 2605 conditions per place. [2024-06-28 02:22:02,262 INFO L140 encePairwiseOnDemand]: 50/67 looper letters, 88 selfloop transitions, 46 changer transitions 1/196 dead transitions. [2024-06-28 02:22:02,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 196 transitions, 1753 flow [2024-06-28 02:22:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:02,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:02,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 248 transitions. [2024-06-28 02:22:02,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7402985074626866 [2024-06-28 02:22:02,264 INFO L175 Difference]: Start difference. First operand has 127 places, 138 transitions, 1145 flow. Second operand 5 states and 248 transitions. [2024-06-28 02:22:02,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 196 transitions, 1753 flow [2024-06-28 02:22:02,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 196 transitions, 1710 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:02,304 INFO L231 Difference]: Finished difference. Result has 132 places, 168 transitions, 1516 flow [2024-06-28 02:22:02,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1516, PETRI_PLACES=132, PETRI_TRANSITIONS=168} [2024-06-28 02:22:02,304 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 72 predicate places. [2024-06-28 02:22:02,304 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 168 transitions, 1516 flow [2024-06-28 02:22:02,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:02,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:02,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:02,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:22:02,305 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)] === [2024-06-28 02:22:02,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:02,305 INFO L85 PathProgramCache]: Analyzing trace with hash -591332081, now seen corresponding path program 1 times [2024-06-28 02:22:02,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:02,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203914903] [2024-06-28 02:22:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:02,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:02,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:02,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203914903] [2024-06-28 02:22:02,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203914903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:02,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:02,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:02,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812706053] [2024-06-28 02:22:02,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:02,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:02,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:02,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:02,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:02,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:02,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 168 transitions, 1516 flow. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:02,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:02,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:02,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:02,846 INFO L124 PetriNetUnfolderBase]: 2504/4970 cut-off events. [2024-06-28 02:22:02,846 INFO L125 PetriNetUnfolderBase]: For 66551/66801 co-relation queries the response was YES. [2024-06-28 02:22:02,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24316 conditions, 4970 events. 2504/4970 cut-off events. For 66551/66801 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 36203 event pairs, 871 based on Foata normal form. 19/4826 useless extension candidates. Maximal degree in co-relation 18180. Up to 1857 conditions per place. [2024-06-28 02:22:02,890 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 86 selfloop transitions, 26 changer transitions 0/192 dead transitions. [2024-06-28 02:22:02,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 192 transitions, 1902 flow [2024-06-28 02:22:02,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:02,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:02,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 243 transitions. [2024-06-28 02:22:02,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7253731343283583 [2024-06-28 02:22:02,892 INFO L175 Difference]: Start difference. First operand has 132 places, 168 transitions, 1516 flow. Second operand 5 states and 243 transitions. [2024-06-28 02:22:02,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 192 transitions, 1902 flow [2024-06-28 02:22:02,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 192 transitions, 1858 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:02,958 INFO L231 Difference]: Finished difference. Result has 136 places, 169 transitions, 1548 flow [2024-06-28 02:22:02,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1548, PETRI_PLACES=136, PETRI_TRANSITIONS=169} [2024-06-28 02:22:02,958 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 76 predicate places. [2024-06-28 02:22:02,958 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 169 transitions, 1548 flow [2024-06-28 02:22:02,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:02,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:02,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:02,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:22:02,959 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)] === [2024-06-28 02:22:02,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:02,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1796991592, now seen corresponding path program 2 times [2024-06-28 02:22:02,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:02,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132336017] [2024-06-28 02:22:02,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:02,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:03,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:03,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:03,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132336017] [2024-06-28 02:22:03,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132336017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:03,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:03,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:03,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997380291] [2024-06-28 02:22:03,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:03,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:03,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:03,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:03,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:03,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:03,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 169 transitions, 1548 flow. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:03,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:03,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:03,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:03,545 INFO L124 PetriNetUnfolderBase]: 2485/5001 cut-off events. [2024-06-28 02:22:03,545 INFO L125 PetriNetUnfolderBase]: For 71885/72135 co-relation queries the response was YES. [2024-06-28 02:22:03,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24704 conditions, 5001 events. 2485/5001 cut-off events. For 71885/72135 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 36691 event pairs, 893 based on Foata normal form. 23/4917 useless extension candidates. Maximal degree in co-relation 18409. Up to 2055 conditions per place. [2024-06-28 02:22:03,586 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 86 selfloop transitions, 32 changer transitions 0/198 dead transitions. [2024-06-28 02:22:03,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 198 transitions, 2021 flow [2024-06-28 02:22:03,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:03,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 243 transitions. [2024-06-28 02:22:03,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7253731343283583 [2024-06-28 02:22:03,588 INFO L175 Difference]: Start difference. First operand has 136 places, 169 transitions, 1548 flow. Second operand 5 states and 243 transitions. [2024-06-28 02:22:03,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 198 transitions, 2021 flow [2024-06-28 02:22:03,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 198 transitions, 1979 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:03,664 INFO L231 Difference]: Finished difference. Result has 139 places, 174 transitions, 1644 flow [2024-06-28 02:22:03,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1644, PETRI_PLACES=139, PETRI_TRANSITIONS=174} [2024-06-28 02:22:03,665 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 79 predicate places. [2024-06-28 02:22:03,665 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 174 transitions, 1644 flow [2024-06-28 02:22:03,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:03,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:03,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:03,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:22:03,666 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)] === [2024-06-28 02:22:03,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:03,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1799342632, now seen corresponding path program 3 times [2024-06-28 02:22:03,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:03,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792261971] [2024-06-28 02:22:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:03,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:03,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:03,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792261971] [2024-06-28 02:22:03,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792261971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:03,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:03,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:03,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258707741] [2024-06-28 02:22:03,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:03,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:03,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:03,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:03,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:03,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:03,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 174 transitions, 1644 flow. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:03,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:03,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:03,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:04,329 INFO L124 PetriNetUnfolderBase]: 2443/4931 cut-off events. [2024-06-28 02:22:04,329 INFO L125 PetriNetUnfolderBase]: For 78933/79164 co-relation queries the response was YES. [2024-06-28 02:22:04,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24967 conditions, 4931 events. 2443/4931 cut-off events. For 78933/79164 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 36114 event pairs, 820 based on Foata normal form. 45/4883 useless extension candidates. Maximal degree in co-relation 18580. Up to 1856 conditions per place. [2024-06-28 02:22:04,375 INFO L140 encePairwiseOnDemand]: 57/67 looper letters, 94 selfloop transitions, 31 changer transitions 0/205 dead transitions. [2024-06-28 02:22:04,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 205 transitions, 2165 flow [2024-06-28 02:22:04,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:04,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 245 transitions. [2024-06-28 02:22:04,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7313432835820896 [2024-06-28 02:22:04,377 INFO L175 Difference]: Start difference. First operand has 139 places, 174 transitions, 1644 flow. Second operand 5 states and 245 transitions. [2024-06-28 02:22:04,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 205 transitions, 2165 flow [2024-06-28 02:22:04,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 205 transitions, 2105 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:04,452 INFO L231 Difference]: Finished difference. Result has 142 places, 180 transitions, 1746 flow [2024-06-28 02:22:04,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1746, PETRI_PLACES=142, PETRI_TRANSITIONS=180} [2024-06-28 02:22:04,452 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 82 predicate places. [2024-06-28 02:22:04,452 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 180 transitions, 1746 flow [2024-06-28 02:22:04,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:04,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:04,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:04,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:22:04,453 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)] === [2024-06-28 02:22:04,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:04,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1660541263, now seen corresponding path program 1 times [2024-06-28 02:22:04,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:04,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052340447] [2024-06-28 02:22:04,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:04,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:04,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:04,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052340447] [2024-06-28 02:22:04,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052340447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:04,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:04,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:04,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972500798] [2024-06-28 02:22:04,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:04,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:22:04,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:04,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:22:04,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:22:04,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-06-28 02:22:04,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 180 transitions, 1746 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:04,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:04,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-06-28 02:22:04,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:05,132 INFO L124 PetriNetUnfolderBase]: 2683/5433 cut-off events. [2024-06-28 02:22:05,133 INFO L125 PetriNetUnfolderBase]: For 50075/50553 co-relation queries the response was YES. [2024-06-28 02:22:05,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23841 conditions, 5433 events. 2683/5433 cut-off events. For 50075/50553 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 41644 event pairs, 1201 based on Foata normal form. 159/5296 useless extension candidates. Maximal degree in co-relation 15621. Up to 3015 conditions per place. [2024-06-28 02:22:05,175 INFO L140 encePairwiseOnDemand]: 53/67 looper letters, 144 selfloop transitions, 36 changer transitions 0/240 dead transitions. [2024-06-28 02:22:05,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 240 transitions, 2642 flow [2024-06-28 02:22:05,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:05,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2024-06-28 02:22:05,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6955223880597015 [2024-06-28 02:22:05,176 INFO L175 Difference]: Start difference. First operand has 142 places, 180 transitions, 1746 flow. Second operand 5 states and 233 transitions. [2024-06-28 02:22:05,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 240 transitions, 2642 flow [2024-06-28 02:22:05,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 240 transitions, 2563 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:05,247 INFO L231 Difference]: Finished difference. Result has 148 places, 193 transitions, 2014 flow [2024-06-28 02:22:05,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2014, PETRI_PLACES=148, PETRI_TRANSITIONS=193} [2024-06-28 02:22:05,248 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 88 predicate places. [2024-06-28 02:22:05,248 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 193 transitions, 2014 flow [2024-06-28 02:22:05,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:05,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:05,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:05,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:22:05,248 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)] === [2024-06-28 02:22:05,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:05,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1360401259, now seen corresponding path program 1 times [2024-06-28 02:22:05,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:05,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51634396] [2024-06-28 02:22:05,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:05,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:05,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:05,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:05,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51634396] [2024-06-28 02:22:05,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51634396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:05,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:05,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:05,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447931968] [2024-06-28 02:22:05,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:05,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:05,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:05,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:05,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:05,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:05,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 193 transitions, 2014 flow. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:05,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:05,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:05,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:05,843 INFO L124 PetriNetUnfolderBase]: 2625/5358 cut-off events. [2024-06-28 02:22:05,843 INFO L125 PetriNetUnfolderBase]: For 98654/98886 co-relation queries the response was YES. [2024-06-28 02:22:05,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28295 conditions, 5358 events. 2625/5358 cut-off events. For 98654/98886 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 40759 event pairs, 1042 based on Foata normal form. 13/5226 useless extension candidates. Maximal degree in co-relation 15936. Up to 2356 conditions per place. [2024-06-28 02:22:05,890 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 101 selfloop transitions, 26 changer transitions 0/215 dead transitions. [2024-06-28 02:22:05,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 215 transitions, 2440 flow [2024-06-28 02:22:05,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:05,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 240 transitions. [2024-06-28 02:22:05,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164179104477612 [2024-06-28 02:22:05,891 INFO L175 Difference]: Start difference. First operand has 148 places, 193 transitions, 2014 flow. Second operand 5 states and 240 transitions. [2024-06-28 02:22:05,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 215 transitions, 2440 flow [2024-06-28 02:22:05,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 215 transitions, 2428 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 02:22:05,963 INFO L231 Difference]: Finished difference. Result has 153 places, 194 transitions, 2080 flow [2024-06-28 02:22:05,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=2002, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2080, PETRI_PLACES=153, PETRI_TRANSITIONS=194} [2024-06-28 02:22:05,963 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 93 predicate places. [2024-06-28 02:22:05,963 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 194 transitions, 2080 flow [2024-06-28 02:22:05,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:05,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:05,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:05,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:22:05,964 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)] === [2024-06-28 02:22:05,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:05,965 INFO L85 PathProgramCache]: Analyzing trace with hash 625344171, now seen corresponding path program 2 times [2024-06-28 02:22:05,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:05,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101137393] [2024-06-28 02:22:05,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:05,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:06,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:06,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:06,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101137393] [2024-06-28 02:22:06,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101137393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:06,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:06,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:06,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914102306] [2024-06-28 02:22:06,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:06,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:06,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:06,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:06,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:06,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:06,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 194 transitions, 2080 flow. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:06,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:06,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:06,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:06,578 INFO L124 PetriNetUnfolderBase]: 2625/5358 cut-off events. [2024-06-28 02:22:06,578 INFO L125 PetriNetUnfolderBase]: For 108831/109097 co-relation queries the response was YES. [2024-06-28 02:22:06,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29021 conditions, 5358 events. 2625/5358 cut-off events. For 108831/109097 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 40678 event pairs, 1099 based on Foata normal form. 15/5228 useless extension candidates. Maximal degree in co-relation 16361. Up to 2358 conditions per place. [2024-06-28 02:22:06,691 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 102 selfloop transitions, 28 changer transitions 0/218 dead transitions. [2024-06-28 02:22:06,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 218 transitions, 2554 flow [2024-06-28 02:22:06,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2024-06-28 02:22:06,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7194029850746269 [2024-06-28 02:22:06,692 INFO L175 Difference]: Start difference. First operand has 153 places, 194 transitions, 2080 flow. Second operand 5 states and 241 transitions. [2024-06-28 02:22:06,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 218 transitions, 2554 flow [2024-06-28 02:22:06,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 218 transitions, 2515 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:06,774 INFO L231 Difference]: Finished difference. Result has 156 places, 197 transitions, 2162 flow [2024-06-28 02:22:06,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=2044, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2162, PETRI_PLACES=156, PETRI_TRANSITIONS=197} [2024-06-28 02:22:06,775 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 96 predicate places. [2024-06-28 02:22:06,775 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 197 transitions, 2162 flow [2024-06-28 02:22:06,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:06,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:06,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:06,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:22:06,776 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)] === [2024-06-28 02:22:06,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:06,776 INFO L85 PathProgramCache]: Analyzing trace with hash -42560779, now seen corresponding path program 3 times [2024-06-28 02:22:06,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:06,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336103574] [2024-06-28 02:22:06,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:06,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:06,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:06,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336103574] [2024-06-28 02:22:06,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336103574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:06,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:06,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:06,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321273486] [2024-06-28 02:22:06,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:06,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:06,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:06,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:06,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:06,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:06,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 197 transitions, 2162 flow. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:06,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:06,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:06,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:07,425 INFO L124 PetriNetUnfolderBase]: 2668/5440 cut-off events. [2024-06-28 02:22:07,426 INFO L125 PetriNetUnfolderBase]: For 117790/118053 co-relation queries the response was YES. [2024-06-28 02:22:07,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29744 conditions, 5440 events. 2668/5440 cut-off events. For 117790/118053 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 40793 event pairs, 1017 based on Foata normal form. 19/5363 useless extension candidates. Maximal degree in co-relation 18102. Up to 2039 conditions per place. [2024-06-28 02:22:07,476 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 122 selfloop transitions, 17 changer transitions 0/227 dead transitions. [2024-06-28 02:22:07,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 227 transitions, 2711 flow [2024-06-28 02:22:07,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:07,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:07,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 243 transitions. [2024-06-28 02:22:07,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7253731343283583 [2024-06-28 02:22:07,481 INFO L175 Difference]: Start difference. First operand has 156 places, 197 transitions, 2162 flow. Second operand 5 states and 243 transitions. [2024-06-28 02:22:07,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 227 transitions, 2711 flow [2024-06-28 02:22:07,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 227 transitions, 2666 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:07,578 INFO L231 Difference]: Finished difference. Result has 159 places, 197 transitions, 2157 flow [2024-06-28 02:22:07,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2157, PETRI_PLACES=159, PETRI_TRANSITIONS=197} [2024-06-28 02:22:07,578 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 99 predicate places. [2024-06-28 02:22:07,578 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 197 transitions, 2157 flow [2024-06-28 02:22:07,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:07,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:07,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:07,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:22:07,579 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:07,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:07,579 INFO L85 PathProgramCache]: Analyzing trace with hash 943930141, now seen corresponding path program 1 times [2024-06-28 02:22:07,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:07,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444736455] [2024-06-28 02:22:07,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:07,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:07,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:07,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444736455] [2024-06-28 02:22:07,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444736455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:07,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:07,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:07,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884188045] [2024-06-28 02:22:07,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:07,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:07,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:07,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:07,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:07,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:07,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 197 transitions, 2157 flow. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:07,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:07,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:07,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:08,242 INFO L124 PetriNetUnfolderBase]: 2708/5574 cut-off events. [2024-06-28 02:22:08,242 INFO L125 PetriNetUnfolderBase]: For 134224/134484 co-relation queries the response was YES. [2024-06-28 02:22:08,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30833 conditions, 5574 events. 2708/5574 cut-off events. For 134224/134484 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 42446 event pairs, 638 based on Foata normal form. 29/5509 useless extension candidates. Maximal degree in co-relation 30447. Up to 2653 conditions per place. [2024-06-28 02:22:08,289 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 123 selfloop transitions, 14 changer transitions 2/227 dead transitions. [2024-06-28 02:22:08,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 227 transitions, 2679 flow [2024-06-28 02:22:08,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:08,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:08,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2024-06-28 02:22:08,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7194029850746269 [2024-06-28 02:22:08,291 INFO L175 Difference]: Start difference. First operand has 159 places, 197 transitions, 2157 flow. Second operand 5 states and 241 transitions. [2024-06-28 02:22:08,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 227 transitions, 2679 flow [2024-06-28 02:22:08,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 227 transitions, 2564 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:08,394 INFO L231 Difference]: Finished difference. Result has 159 places, 199 transitions, 2120 flow [2024-06-28 02:22:08,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=2034, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2120, PETRI_PLACES=159, PETRI_TRANSITIONS=199} [2024-06-28 02:22:08,395 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 99 predicate places. [2024-06-28 02:22:08,395 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 199 transitions, 2120 flow [2024-06-28 02:22:08,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:08,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:08,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:08,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:22:08,396 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)] === [2024-06-28 02:22:08,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:08,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1686735416, now seen corresponding path program 1 times [2024-06-28 02:22:08,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:08,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578591999] [2024-06-28 02:22:08,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:08,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:08,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:08,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:08,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578591999] [2024-06-28 02:22:08,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578591999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:08,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:08,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:08,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473306492] [2024-06-28 02:22:08,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:08,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:08,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:08,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:08,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:08,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:08,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 199 transitions, 2120 flow. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:08,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:08,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:08,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:09,155 INFO L124 PetriNetUnfolderBase]: 2772/5709 cut-off events. [2024-06-28 02:22:09,156 INFO L125 PetriNetUnfolderBase]: For 145280/145553 co-relation queries the response was YES. [2024-06-28 02:22:09,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32152 conditions, 5709 events. 2772/5709 cut-off events. For 145280/145553 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 43915 event pairs, 959 based on Foata normal form. 27/5627 useless extension candidates. Maximal degree in co-relation 31753. Up to 2610 conditions per place. [2024-06-28 02:22:09,207 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 112 selfloop transitions, 25 changer transitions 1/226 dead transitions. [2024-06-28 02:22:09,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 226 transitions, 2652 flow [2024-06-28 02:22:09,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:09,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:09,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 236 transitions. [2024-06-28 02:22:09,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7044776119402985 [2024-06-28 02:22:09,209 INFO L175 Difference]: Start difference. First operand has 159 places, 199 transitions, 2120 flow. Second operand 5 states and 236 transitions. [2024-06-28 02:22:09,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 226 transitions, 2652 flow [2024-06-28 02:22:09,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 226 transitions, 2639 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:09,323 INFO L231 Difference]: Finished difference. Result has 165 places, 205 transitions, 2270 flow [2024-06-28 02:22:09,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2270, PETRI_PLACES=165, PETRI_TRANSITIONS=205} [2024-06-28 02:22:09,324 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 105 predicate places. [2024-06-28 02:22:09,324 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 205 transitions, 2270 flow [2024-06-28 02:22:09,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:09,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:09,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:09,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:22:09,324 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)] === [2024-06-28 02:22:09,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:09,325 INFO L85 PathProgramCache]: Analyzing trace with hash 589435469, now seen corresponding path program 1 times [2024-06-28 02:22:09,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:09,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737923109] [2024-06-28 02:22:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:09,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:09,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:09,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:09,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737923109] [2024-06-28 02:22:09,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737923109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:09,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:09,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:09,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884501349] [2024-06-28 02:22:09,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:09,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:09,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:09,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:09,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:09,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:09,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 205 transitions, 2270 flow. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:09,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:09,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:09,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:10,166 INFO L124 PetriNetUnfolderBase]: 2692/5491 cut-off events. [2024-06-28 02:22:10,166 INFO L125 PetriNetUnfolderBase]: For 156105/156400 co-relation queries the response was YES. [2024-06-28 02:22:10,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32687 conditions, 5491 events. 2692/5491 cut-off events. For 156105/156400 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 42199 event pairs, 1536 based on Foata normal form. 17/5301 useless extension candidates. Maximal degree in co-relation 24756. Up to 3697 conditions per place. [2024-06-28 02:22:10,226 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 106 selfloop transitions, 27 changer transitions 0/221 dead transitions. [2024-06-28 02:22:10,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 221 transitions, 2652 flow [2024-06-28 02:22:10,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:10,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 232 transitions. [2024-06-28 02:22:10,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6925373134328359 [2024-06-28 02:22:10,227 INFO L175 Difference]: Start difference. First operand has 165 places, 205 transitions, 2270 flow. Second operand 5 states and 232 transitions. [2024-06-28 02:22:10,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 221 transitions, 2652 flow [2024-06-28 02:22:10,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 221 transitions, 2630 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 02:22:10,393 INFO L231 Difference]: Finished difference. Result has 169 places, 207 transitions, 2330 flow [2024-06-28 02:22:10,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2330, PETRI_PLACES=169, PETRI_TRANSITIONS=207} [2024-06-28 02:22:10,394 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 109 predicate places. [2024-06-28 02:22:10,394 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 207 transitions, 2330 flow [2024-06-28 02:22:10,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:10,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:10,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:10,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:22:10,395 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)] === [2024-06-28 02:22:10,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:10,395 INFO L85 PathProgramCache]: Analyzing trace with hash -2067137233, now seen corresponding path program 2 times [2024-06-28 02:22:10,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:10,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066032076] [2024-06-28 02:22:10,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:10,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:10,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:10,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:10,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066032076] [2024-06-28 02:22:10,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066032076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:10,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:10,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:10,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552080296] [2024-06-28 02:22:10,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:10,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:10,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:10,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:10,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:10,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:10,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 207 transitions, 2330 flow. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:10,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:10,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:10,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:11,151 INFO L124 PetriNetUnfolderBase]: 2759/5661 cut-off events. [2024-06-28 02:22:11,152 INFO L125 PetriNetUnfolderBase]: For 167003/167290 co-relation queries the response was YES. [2024-06-28 02:22:11,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34105 conditions, 5661 events. 2759/5661 cut-off events. For 167003/167290 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 43161 event pairs, 1170 based on Foata normal form. 22/5546 useless extension candidates. Maximal degree in co-relation 25977. Up to 2607 conditions per place. [2024-06-28 02:22:11,211 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 128 selfloop transitions, 24 changer transitions 0/240 dead transitions. [2024-06-28 02:22:11,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 240 transitions, 3023 flow [2024-06-28 02:22:11,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:11,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:11,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 234 transitions. [2024-06-28 02:22:11,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6985074626865672 [2024-06-28 02:22:11,212 INFO L175 Difference]: Start difference. First operand has 169 places, 207 transitions, 2330 flow. Second operand 5 states and 234 transitions. [2024-06-28 02:22:11,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 240 transitions, 3023 flow [2024-06-28 02:22:11,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 240 transitions, 2985 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:11,412 INFO L231 Difference]: Finished difference. Result has 172 places, 213 transitions, 2428 flow [2024-06-28 02:22:11,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2428, PETRI_PLACES=172, PETRI_TRANSITIONS=213} [2024-06-28 02:22:11,412 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 112 predicate places. [2024-06-28 02:22:11,412 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 213 transitions, 2428 flow [2024-06-28 02:22:11,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:11,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:11,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:11,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:22:11,413 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)] === [2024-06-28 02:22:11,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:11,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2067406003, now seen corresponding path program 3 times [2024-06-28 02:22:11,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:11,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410255847] [2024-06-28 02:22:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:11,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:11,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:11,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410255847] [2024-06-28 02:22:11,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410255847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:11,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:11,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:11,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491214163] [2024-06-28 02:22:11,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:11,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:11,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:11,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:11,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:11,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:11,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 213 transitions, 2428 flow. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:11,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:11,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:11,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:12,138 INFO L124 PetriNetUnfolderBase]: 2741/5634 cut-off events. [2024-06-28 02:22:12,139 INFO L125 PetriNetUnfolderBase]: For 178633/178928 co-relation queries the response was YES. [2024-06-28 02:22:12,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34604 conditions, 5634 events. 2741/5634 cut-off events. For 178633/178928 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 43000 event pairs, 1147 based on Foata normal form. 26/5527 useless extension candidates. Maximal degree in co-relation 26488. Up to 2601 conditions per place. [2024-06-28 02:22:12,197 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 132 selfloop transitions, 28 changer transitions 0/248 dead transitions. [2024-06-28 02:22:12,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 248 transitions, 3128 flow [2024-06-28 02:22:12,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:12,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:12,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 242 transitions. [2024-06-28 02:22:12,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7223880597014926 [2024-06-28 02:22:12,201 INFO L175 Difference]: Start difference. First operand has 172 places, 213 transitions, 2428 flow. Second operand 5 states and 242 transitions. [2024-06-28 02:22:12,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 248 transitions, 3128 flow [2024-06-28 02:22:12,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 248 transitions, 3108 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-06-28 02:22:12,365 INFO L231 Difference]: Finished difference. Result has 177 places, 215 transitions, 2495 flow [2024-06-28 02:22:12,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2495, PETRI_PLACES=177, PETRI_TRANSITIONS=215} [2024-06-28 02:22:12,365 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 117 predicate places. [2024-06-28 02:22:12,365 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 215 transitions, 2495 flow [2024-06-28 02:22:12,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:12,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:12,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:12,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:22:12,366 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)] === [2024-06-28 02:22:12,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:12,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1659050563, now seen corresponding path program 1 times [2024-06-28 02:22:12,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:12,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977576416] [2024-06-28 02:22:12,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:12,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:12,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:12,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977576416] [2024-06-28 02:22:12,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977576416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:12,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:12,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:12,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632066944] [2024-06-28 02:22:12,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:12,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:22:12,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:12,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:22:12,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:22:12,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 67 [2024-06-28 02:22:12,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 215 transitions, 2495 flow. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:12,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:12,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 67 [2024-06-28 02:22:12,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:13,020 INFO L124 PetriNetUnfolderBase]: 2519/5283 cut-off events. [2024-06-28 02:22:13,021 INFO L125 PetriNetUnfolderBase]: For 96355/96894 co-relation queries the response was YES. [2024-06-28 02:22:13,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27003 conditions, 5283 events. 2519/5283 cut-off events. For 96355/96894 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 40513 event pairs, 950 based on Foata normal form. 109/5106 useless extension candidates. Maximal degree in co-relation 19572. Up to 2147 conditions per place. [2024-06-28 02:22:13,072 INFO L140 encePairwiseOnDemand]: 50/67 looper letters, 147 selfloop transitions, 58 changer transitions 0/272 dead transitions. [2024-06-28 02:22:13,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 272 transitions, 3338 flow [2024-06-28 02:22:13,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2024-06-28 02:22:13,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7194029850746269 [2024-06-28 02:22:13,073 INFO L175 Difference]: Start difference. First operand has 177 places, 215 transitions, 2495 flow. Second operand 5 states and 241 transitions. [2024-06-28 02:22:13,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 272 transitions, 3338 flow [2024-06-28 02:22:13,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 272 transitions, 3298 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:13,203 INFO L231 Difference]: Finished difference. Result has 182 places, 244 transitions, 3038 flow [2024-06-28 02:22:13,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3038, PETRI_PLACES=182, PETRI_TRANSITIONS=244} [2024-06-28 02:22:13,204 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 122 predicate places. [2024-06-28 02:22:13,204 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 244 transitions, 3038 flow [2024-06-28 02:22:13,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:13,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:13,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:13,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:22:13,204 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)] === [2024-06-28 02:22:13,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:13,205 INFO L85 PathProgramCache]: Analyzing trace with hash -494803903, now seen corresponding path program 1 times [2024-06-28 02:22:13,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:13,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220635012] [2024-06-28 02:22:13,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:13,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:13,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:13,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220635012] [2024-06-28 02:22:13,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220635012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:13,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:13,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:13,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010962565] [2024-06-28 02:22:13,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:13,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:13,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:13,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:13,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:13,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:13,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 244 transitions, 3038 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:13,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:13,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:13,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:14,001 INFO L124 PetriNetUnfolderBase]: 2670/5506 cut-off events. [2024-06-28 02:22:14,001 INFO L125 PetriNetUnfolderBase]: For 196544/196847 co-relation queries the response was YES. [2024-06-28 02:22:14,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35884 conditions, 5506 events. 2670/5506 cut-off events. For 196544/196847 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 41490 event pairs, 1123 based on Foata normal form. 33/5415 useless extension candidates. Maximal degree in co-relation 24981. Up to 2481 conditions per place. [2024-06-28 02:22:14,058 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 129 selfloop transitions, 28 changer transitions 0/269 dead transitions. [2024-06-28 02:22:14,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 269 transitions, 3678 flow [2024-06-28 02:22:14,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:14,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:14,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2024-06-28 02:22:14,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7134328358208956 [2024-06-28 02:22:14,060 INFO L175 Difference]: Start difference. First operand has 182 places, 244 transitions, 3038 flow. Second operand 5 states and 239 transitions. [2024-06-28 02:22:14,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 269 transitions, 3678 flow [2024-06-28 02:22:14,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 269 transitions, 3606 flow, removed 36 selfloop flow, removed 0 redundant places. [2024-06-28 02:22:14,239 INFO L231 Difference]: Finished difference. Result has 187 places, 248 transitions, 3097 flow [2024-06-28 02:22:14,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=2966, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3097, PETRI_PLACES=187, PETRI_TRANSITIONS=248} [2024-06-28 02:22:14,239 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 127 predicate places. [2024-06-28 02:22:14,239 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 248 transitions, 3097 flow [2024-06-28 02:22:14,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:14,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:14,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:14,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:22:14,240 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)] === [2024-06-28 02:22:14,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:14,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1993474179, now seen corresponding path program 2 times [2024-06-28 02:22:14,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:14,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838586316] [2024-06-28 02:22:14,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:14,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:14,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:14,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838586316] [2024-06-28 02:22:14,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838586316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:14,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:14,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:14,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128637049] [2024-06-28 02:22:14,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:14,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:14,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:14,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:14,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:14,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:14,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 248 transitions, 3097 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:14,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:14,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:14,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:15,032 INFO L124 PetriNetUnfolderBase]: 2668/5550 cut-off events. [2024-06-28 02:22:15,032 INFO L125 PetriNetUnfolderBase]: For 212061/212363 co-relation queries the response was YES. [2024-06-28 02:22:15,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36424 conditions, 5550 events. 2668/5550 cut-off events. For 212061/212363 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 42343 event pairs, 1041 based on Foata normal form. 72/5497 useless extension candidates. Maximal degree in co-relation 25119. Up to 2350 conditions per place. [2024-06-28 02:22:15,093 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 127 selfloop transitions, 41 changer transitions 0/280 dead transitions. [2024-06-28 02:22:15,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 280 transitions, 3817 flow [2024-06-28 02:22:15,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:15,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:15,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 245 transitions. [2024-06-28 02:22:15,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7313432835820896 [2024-06-28 02:22:15,095 INFO L175 Difference]: Start difference. First operand has 187 places, 248 transitions, 3097 flow. Second operand 5 states and 245 transitions. [2024-06-28 02:22:15,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 280 transitions, 3817 flow [2024-06-28 02:22:15,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 280 transitions, 3745 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:15,290 INFO L231 Difference]: Finished difference. Result has 191 places, 254 transitions, 3264 flow [2024-06-28 02:22:15,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=3027, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3264, PETRI_PLACES=191, PETRI_TRANSITIONS=254} [2024-06-28 02:22:15,291 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 131 predicate places. [2024-06-28 02:22:15,291 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 254 transitions, 3264 flow [2024-06-28 02:22:15,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:15,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:15,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:15,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:22:15,292 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)] === [2024-06-28 02:22:15,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:15,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2018469789, now seen corresponding path program 3 times [2024-06-28 02:22:15,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:15,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720912570] [2024-06-28 02:22:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:15,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:15,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:15,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720912570] [2024-06-28 02:22:15,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720912570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:15,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:15,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:15,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166056350] [2024-06-28 02:22:15,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:15,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:22:15,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:15,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:22:15,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:22:15,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-06-28 02:22:15,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 254 transitions, 3264 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:15,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:15,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-06-28 02:22:15,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:16,049 INFO L124 PetriNetUnfolderBase]: 2851/5741 cut-off events. [2024-06-28 02:22:16,049 INFO L125 PetriNetUnfolderBase]: For 130856/131514 co-relation queries the response was YES. [2024-06-28 02:22:16,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32645 conditions, 5741 events. 2851/5741 cut-off events. For 130856/131514 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 43433 event pairs, 1410 based on Foata normal form. 133/5559 useless extension candidates. Maximal degree in co-relation 25327. Up to 3616 conditions per place. [2024-06-28 02:22:16,108 INFO L140 encePairwiseOnDemand]: 53/67 looper letters, 113 selfloop transitions, 26 changer transitions 1/298 dead transitions. [2024-06-28 02:22:16,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 298 transitions, 3867 flow [2024-06-28 02:22:16,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:16,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2024-06-28 02:22:16,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6776119402985075 [2024-06-28 02:22:16,110 INFO L175 Difference]: Start difference. First operand has 191 places, 254 transitions, 3264 flow. Second operand 5 states and 227 transitions. [2024-06-28 02:22:16,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 298 transitions, 3867 flow [2024-06-28 02:22:16,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 298 transitions, 3756 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:16,312 INFO L231 Difference]: Finished difference. Result has 196 places, 258 transitions, 3292 flow [2024-06-28 02:22:16,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=3060, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3292, PETRI_PLACES=196, PETRI_TRANSITIONS=258} [2024-06-28 02:22:16,312 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 136 predicate places. [2024-06-28 02:22:16,312 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 258 transitions, 3292 flow [2024-06-28 02:22:16,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:16,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:16,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:16,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:22:16,313 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)] === [2024-06-28 02:22:16,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:16,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2040981205, now seen corresponding path program 1 times [2024-06-28 02:22:16,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:16,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193521543] [2024-06-28 02:22:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:16,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:16,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:16,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193521543] [2024-06-28 02:22:16,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193521543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:16,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:16,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:16,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250222459] [2024-06-28 02:22:16,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:16,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:16,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:16,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:16,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:16,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:16,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 258 transitions, 3292 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:16,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:16,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:16,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:17,146 INFO L124 PetriNetUnfolderBase]: 2648/5613 cut-off events. [2024-06-28 02:22:17,146 INFO L125 PetriNetUnfolderBase]: For 220673/220975 co-relation queries the response was YES. [2024-06-28 02:22:17,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38041 conditions, 5613 events. 2648/5613 cut-off events. For 220673/220975 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 43385 event pairs, 1046 based on Foata normal form. 31/5511 useless extension candidates. Maximal degree in co-relation 29227. Up to 2485 conditions per place. [2024-06-28 02:22:17,210 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 115 selfloop transitions, 49 changer transitions 0/281 dead transitions. [2024-06-28 02:22:17,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 281 transitions, 3917 flow [2024-06-28 02:22:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:17,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:17,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 240 transitions. [2024-06-28 02:22:17,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164179104477612 [2024-06-28 02:22:17,211 INFO L175 Difference]: Start difference. First operand has 196 places, 258 transitions, 3292 flow. Second operand 5 states and 240 transitions. [2024-06-28 02:22:17,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 281 transitions, 3917 flow [2024-06-28 02:22:17,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 281 transitions, 3913 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 02:22:17,468 INFO L231 Difference]: Finished difference. Result has 201 places, 262 transitions, 3469 flow [2024-06-28 02:22:17,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=3288, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3469, PETRI_PLACES=201, PETRI_TRANSITIONS=262} [2024-06-28 02:22:17,469 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 141 predicate places. [2024-06-28 02:22:17,469 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 262 transitions, 3469 flow [2024-06-28 02:22:17,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:17,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:17,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:17,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:22:17,469 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)] === [2024-06-28 02:22:17,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:17,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1249270819, now seen corresponding path program 2 times [2024-06-28 02:22:17,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:17,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314119630] [2024-06-28 02:22:17,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:17,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:17,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:17,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:17,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314119630] [2024-06-28 02:22:17,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314119630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:17,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:17,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:17,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688470215] [2024-06-28 02:22:17,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:17,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:17,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:17,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:17,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:17,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:17,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 262 transitions, 3469 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:17,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:17,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:17,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:18,316 INFO L124 PetriNetUnfolderBase]: 2601/5528 cut-off events. [2024-06-28 02:22:18,316 INFO L125 PetriNetUnfolderBase]: For 233858/234097 co-relation queries the response was YES. [2024-06-28 02:22:18,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38306 conditions, 5528 events. 2601/5528 cut-off events. For 233858/234097 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 42694 event pairs, 1052 based on Foata normal form. 27/5437 useless extension candidates. Maximal degree in co-relation 29304. Up to 2292 conditions per place. [2024-06-28 02:22:18,376 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 150 selfloop transitions, 24 changer transitions 0/291 dead transitions. [2024-06-28 02:22:18,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 291 transitions, 4209 flow [2024-06-28 02:22:18,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2024-06-28 02:22:18,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7194029850746269 [2024-06-28 02:22:18,377 INFO L175 Difference]: Start difference. First operand has 201 places, 262 transitions, 3469 flow. Second operand 5 states and 241 transitions. [2024-06-28 02:22:18,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 291 transitions, 4209 flow [2024-06-28 02:22:18,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 291 transitions, 4123 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:18,624 INFO L231 Difference]: Finished difference. Result has 204 places, 266 transitions, 3530 flow [2024-06-28 02:22:18,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=3387, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3530, PETRI_PLACES=204, PETRI_TRANSITIONS=266} [2024-06-28 02:22:18,625 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 144 predicate places. [2024-06-28 02:22:18,625 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 266 transitions, 3530 flow [2024-06-28 02:22:18,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:18,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:18,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:18,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:22:18,626 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)] === [2024-06-28 02:22:18,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:18,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1992673821, now seen corresponding path program 1 times [2024-06-28 02:22:18,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:18,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399696867] [2024-06-28 02:22:18,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:18,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:18,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:18,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:18,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399696867] [2024-06-28 02:22:18,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399696867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:18,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:18,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:18,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897134040] [2024-06-28 02:22:18,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:18,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:18,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:18,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:18,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:18,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:18,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 266 transitions, 3530 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:18,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:18,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:18,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:19,481 INFO L124 PetriNetUnfolderBase]: 2619/5546 cut-off events. [2024-06-28 02:22:19,481 INFO L125 PetriNetUnfolderBase]: For 246333/246620 co-relation queries the response was YES. [2024-06-28 02:22:19,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38816 conditions, 5546 events. 2619/5546 cut-off events. For 246333/246620 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 42731 event pairs, 1070 based on Foata normal form. 25/5447 useless extension candidates. Maximal degree in co-relation 29702. Up to 2479 conditions per place. [2024-06-28 02:22:19,543 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 114 selfloop transitions, 58 changer transitions 0/289 dead transitions. [2024-06-28 02:22:19,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 289 transitions, 4191 flow [2024-06-28 02:22:19,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:19,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:19,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 240 transitions. [2024-06-28 02:22:19,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7164179104477612 [2024-06-28 02:22:19,545 INFO L175 Difference]: Start difference. First operand has 204 places, 266 transitions, 3530 flow. Second operand 5 states and 240 transitions. [2024-06-28 02:22:19,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 289 transitions, 4191 flow [2024-06-28 02:22:19,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 289 transitions, 4098 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:19,931 INFO L231 Difference]: Finished difference. Result has 206 places, 270 transitions, 3649 flow [2024-06-28 02:22:19,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=3437, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3649, PETRI_PLACES=206, PETRI_TRANSITIONS=270} [2024-06-28 02:22:19,931 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 146 predicate places. [2024-06-28 02:22:19,931 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 270 transitions, 3649 flow [2024-06-28 02:22:19,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:19,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:19,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:19,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:22:19,932 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)] === [2024-06-28 02:22:19,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:19,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2017603897, now seen corresponding path program 2 times [2024-06-28 02:22:19,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:19,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980740781] [2024-06-28 02:22:19,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:19,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:19,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:19,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:19,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980740781] [2024-06-28 02:22:19,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980740781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:19,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:19,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:19,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588025985] [2024-06-28 02:22:19,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:19,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:19,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:19,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:19,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:20,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:20,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 270 transitions, 3649 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:20,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:20,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:20,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:20,906 INFO L124 PetriNetUnfolderBase]: 2524/5374 cut-off events. [2024-06-28 02:22:20,907 INFO L125 PetriNetUnfolderBase]: For 254747/254995 co-relation queries the response was YES. [2024-06-28 02:22:20,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37888 conditions, 5374 events. 2524/5374 cut-off events. For 254747/254995 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 41364 event pairs, 969 based on Foata normal form. 36/5293 useless extension candidates. Maximal degree in co-relation 28890. Up to 2196 conditions per place. [2024-06-28 02:22:20,976 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 135 selfloop transitions, 41 changer transitions 0/293 dead transitions. [2024-06-28 02:22:20,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 293 transitions, 4258 flow [2024-06-28 02:22:20,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:20,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:20,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 244 transitions. [2024-06-28 02:22:20,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7283582089552239 [2024-06-28 02:22:20,978 INFO L175 Difference]: Start difference. First operand has 206 places, 270 transitions, 3649 flow. Second operand 5 states and 244 transitions. [2024-06-28 02:22:20,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 293 transitions, 4258 flow [2024-06-28 02:22:21,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 293 transitions, 4160 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:21,324 INFO L231 Difference]: Finished difference. Result has 209 places, 271 transitions, 3655 flow [2024-06-28 02:22:21,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=3551, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3655, PETRI_PLACES=209, PETRI_TRANSITIONS=271} [2024-06-28 02:22:21,325 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 149 predicate places. [2024-06-28 02:22:21,325 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 271 transitions, 3655 flow [2024-06-28 02:22:21,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:21,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:21,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:21,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:22:21,325 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)] === [2024-06-28 02:22:21,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:21,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1093092355, now seen corresponding path program 2 times [2024-06-28 02:22:21,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:21,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997545616] [2024-06-28 02:22:21,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:21,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:21,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:21,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997545616] [2024-06-28 02:22:21,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997545616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:21,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:21,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:21,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644677596] [2024-06-28 02:22:21,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:21,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:22:21,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:21,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:22:21,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:22:21,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 67 [2024-06-28 02:22:21,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 271 transitions, 3655 flow. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:21,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:21,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 67 [2024-06-28 02:22:21,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:21,977 INFO L124 PetriNetUnfolderBase]: 1928/4154 cut-off events. [2024-06-28 02:22:21,977 INFO L125 PetriNetUnfolderBase]: For 113626/114015 co-relation queries the response was YES. [2024-06-28 02:22:22,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25231 conditions, 4154 events. 1928/4154 cut-off events. For 113626/114015 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 30993 event pairs, 661 based on Foata normal form. 160/4147 useless extension candidates. Maximal degree in co-relation 21366. Up to 1660 conditions per place. [2024-06-28 02:22:22,021 INFO L140 encePairwiseOnDemand]: 50/67 looper letters, 110 selfloop transitions, 42 changer transitions 1/301 dead transitions. [2024-06-28 02:22:22,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 301 transitions, 4098 flow [2024-06-28 02:22:22,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:22,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2024-06-28 02:22:22,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7134328358208956 [2024-06-28 02:22:22,022 INFO L175 Difference]: Start difference. First operand has 209 places, 271 transitions, 3655 flow. Second operand 5 states and 239 transitions. [2024-06-28 02:22:22,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 301 transitions, 4098 flow [2024-06-28 02:22:22,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 301 transitions, 3935 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 02:22:22,231 INFO L231 Difference]: Finished difference. Result has 212 places, 267 transitions, 3607 flow [2024-06-28 02:22:22,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=3198, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3607, PETRI_PLACES=212, PETRI_TRANSITIONS=267} [2024-06-28 02:22:22,232 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 152 predicate places. [2024-06-28 02:22:22,232 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 267 transitions, 3607 flow [2024-06-28 02:22:22,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:22,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:22,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:22,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:22:22,233 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)] === [2024-06-28 02:22:22,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:22,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1376512887, now seen corresponding path program 3 times [2024-06-28 02:22:22,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:22,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22054114] [2024-06-28 02:22:22,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:22,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:22,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:22,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:22,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22054114] [2024-06-28 02:22:22,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22054114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:22,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:22,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:22,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603802641] [2024-06-28 02:22:22,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:22,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:22:22,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:22,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:22:22,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:22:22,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 67 [2024-06-28 02:22:22,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 267 transitions, 3607 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:22,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:22,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 67 [2024-06-28 02:22:22,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:22,704 INFO L124 PetriNetUnfolderBase]: 1317/3047 cut-off events. [2024-06-28 02:22:22,704 INFO L125 PetriNetUnfolderBase]: For 78682/79073 co-relation queries the response was YES. [2024-06-28 02:22:22,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18657 conditions, 3047 events. 1317/3047 cut-off events. For 78682/79073 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 21839 event pairs, 647 based on Foata normal form. 118/3040 useless extension candidates. Maximal degree in co-relation 15377. Up to 1663 conditions per place. [2024-06-28 02:22:22,736 INFO L140 encePairwiseOnDemand]: 53/67 looper letters, 103 selfloop transitions, 49 changer transitions 1/274 dead transitions. [2024-06-28 02:22:22,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 274 transitions, 3807 flow [2024-06-28 02:22:22,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:22,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:22,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2024-06-28 02:22:22,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6955223880597015 [2024-06-28 02:22:22,737 INFO L175 Difference]: Start difference. First operand has 212 places, 267 transitions, 3607 flow. Second operand 5 states and 233 transitions. [2024-06-28 02:22:22,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 274 transitions, 3807 flow [2024-06-28 02:22:22,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 274 transitions, 3573 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:22,897 INFO L231 Difference]: Finished difference. Result has 213 places, 254 transitions, 3310 flow [2024-06-28 02:22:22,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=2862, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3310, PETRI_PLACES=213, PETRI_TRANSITIONS=254} [2024-06-28 02:22:22,897 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 153 predicate places. [2024-06-28 02:22:22,897 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 254 transitions, 3310 flow [2024-06-28 02:22:22,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:22,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:22,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:22,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:22:22,898 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)] === [2024-06-28 02:22:22,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:22,898 INFO L85 PathProgramCache]: Analyzing trace with hash 334742190, now seen corresponding path program 1 times [2024-06-28 02:22:22,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:22,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580202170] [2024-06-28 02:22:22,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:22,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:22,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:22,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580202170] [2024-06-28 02:22:22,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580202170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:22,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:22,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:22,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939820469] [2024-06-28 02:22:22,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:22,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:22,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:22,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:22,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:22,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:22,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 254 transitions, 3310 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:22,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:22,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:22,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:23,434 INFO L124 PetriNetUnfolderBase]: 1360/3242 cut-off events. [2024-06-28 02:22:23,434 INFO L125 PetriNetUnfolderBase]: For 136454/136663 co-relation queries the response was YES. [2024-06-28 02:22:23,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22297 conditions, 3242 events. 1360/3242 cut-off events. For 136454/136663 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 23724 event pairs, 344 based on Foata normal form. 62/3260 useless extension candidates. Maximal degree in co-relation 21828. Up to 1304 conditions per place. [2024-06-28 02:22:23,466 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 129 selfloop transitions, 25 changer transitions 2/274 dead transitions. [2024-06-28 02:22:23,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 274 transitions, 3860 flow [2024-06-28 02:22:23,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:23,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:23,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2024-06-28 02:22:23,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6955223880597015 [2024-06-28 02:22:23,467 INFO L175 Difference]: Start difference. First operand has 213 places, 254 transitions, 3310 flow. Second operand 5 states and 233 transitions. [2024-06-28 02:22:23,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 274 transitions, 3860 flow [2024-06-28 02:22:23,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 274 transitions, 3772 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:23,632 INFO L231 Difference]: Finished difference. Result has 217 places, 256 transitions, 3323 flow [2024-06-28 02:22:23,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=3222, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3323, PETRI_PLACES=217, PETRI_TRANSITIONS=256} [2024-06-28 02:22:23,632 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 157 predicate places. [2024-06-28 02:22:23,633 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 256 transitions, 3323 flow [2024-06-28 02:22:23,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:23,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:23,633 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] [2024-06-28 02:22:23,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:22:23,633 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)] === [2024-06-28 02:22:23,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:23,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1159907387, now seen corresponding path program 1 times [2024-06-28 02:22:23,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:23,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528079940] [2024-06-28 02:22:23,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:23,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:23,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:23,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:23,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528079940] [2024-06-28 02:22:23,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528079940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:23,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:23,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:23,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578507295] [2024-06-28 02:22:23,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:23,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:23,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:23,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:23,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:23,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:23,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 256 transitions, 3323 flow. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:23,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:23,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:23,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:24,176 INFO L124 PetriNetUnfolderBase]: 1333/3164 cut-off events. [2024-06-28 02:22:24,176 INFO L125 PetriNetUnfolderBase]: For 135378/135584 co-relation queries the response was YES. [2024-06-28 02:22:24,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21795 conditions, 3164 events. 1333/3164 cut-off events. For 135378/135584 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 23173 event pairs, 435 based on Foata normal form. 57/3135 useless extension candidates. Maximal degree in co-relation 18153. Up to 1087 conditions per place. [2024-06-28 02:22:24,209 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 127 selfloop transitions, 30 changer transitions 2/277 dead transitions. [2024-06-28 02:22:24,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 277 transitions, 3908 flow [2024-06-28 02:22:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:24,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:24,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 237 transitions. [2024-06-28 02:22:24,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7074626865671642 [2024-06-28 02:22:24,210 INFO L175 Difference]: Start difference. First operand has 217 places, 256 transitions, 3323 flow. Second operand 5 states and 237 transitions. [2024-06-28 02:22:24,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 277 transitions, 3908 flow [2024-06-28 02:22:24,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 277 transitions, 3767 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:24,392 INFO L231 Difference]: Finished difference. Result has 216 places, 257 transitions, 3274 flow [2024-06-28 02:22:24,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=3182, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3274, PETRI_PLACES=216, PETRI_TRANSITIONS=257} [2024-06-28 02:22:24,393 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 156 predicate places. [2024-06-28 02:22:24,393 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 257 transitions, 3274 flow [2024-06-28 02:22:24,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:24,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:24,394 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] [2024-06-28 02:22:24,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:22:24,395 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)] === [2024-06-28 02:22:24,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:24,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1494060913, now seen corresponding path program 2 times [2024-06-28 02:22:24,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:24,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201491444] [2024-06-28 02:22:24,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:24,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:24,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:24,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201491444] [2024-06-28 02:22:24,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201491444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:24,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:24,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:24,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415866476] [2024-06-28 02:22:24,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:24,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:24,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:24,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:24,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:24,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:24,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 257 transitions, 3274 flow. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:24,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:24,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:24,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:24,929 INFO L124 PetriNetUnfolderBase]: 1358/3220 cut-off events. [2024-06-28 02:22:24,929 INFO L125 PetriNetUnfolderBase]: For 132604/132824 co-relation queries the response was YES. [2024-06-28 02:22:24,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21966 conditions, 3220 events. 1358/3220 cut-off events. For 132604/132824 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 23517 event pairs, 264 based on Foata normal form. 48/3215 useless extension candidates. Maximal degree in co-relation 20826. Up to 923 conditions per place. [2024-06-28 02:22:24,964 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 131 selfloop transitions, 28 changer transitions 2/279 dead transitions. [2024-06-28 02:22:24,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 279 transitions, 3868 flow [2024-06-28 02:22:24,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:24,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:24,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 238 transitions. [2024-06-28 02:22:24,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7104477611940299 [2024-06-28 02:22:24,965 INFO L175 Difference]: Start difference. First operand has 216 places, 257 transitions, 3274 flow. Second operand 5 states and 238 transitions. [2024-06-28 02:22:24,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 279 transitions, 3868 flow [2024-06-28 02:22:25,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 279 transitions, 3789 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:25,159 INFO L231 Difference]: Finished difference. Result has 218 places, 257 transitions, 3263 flow [2024-06-28 02:22:25,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=3199, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3263, PETRI_PLACES=218, PETRI_TRANSITIONS=257} [2024-06-28 02:22:25,159 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 158 predicate places. [2024-06-28 02:22:25,160 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 257 transitions, 3263 flow [2024-06-28 02:22:25,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:25,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:25,160 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] [2024-06-28 02:22:25,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:22:25,160 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)] === [2024-06-28 02:22:25,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:25,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2057725197, now seen corresponding path program 1 times [2024-06-28 02:22:25,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:25,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597951710] [2024-06-28 02:22:25,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:25,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:25,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:25,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597951710] [2024-06-28 02:22:25,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597951710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:25,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:25,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:25,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118550342] [2024-06-28 02:22:25,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:25,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:25,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:25,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:25,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:25,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:25,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 257 transitions, 3263 flow. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:25,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:25,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:25,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:25,688 INFO L124 PetriNetUnfolderBase]: 1338/3139 cut-off events. [2024-06-28 02:22:25,688 INFO L125 PetriNetUnfolderBase]: For 133222/133451 co-relation queries the response was YES. [2024-06-28 02:22:25,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21509 conditions, 3139 events. 1338/3139 cut-off events. For 133222/133451 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 22950 event pairs, 689 based on Foata normal form. 49/3089 useless extension candidates. Maximal degree in co-relation 16921. Up to 1710 conditions per place. [2024-06-28 02:22:25,722 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 129 selfloop transitions, 24 changer transitions 0/271 dead transitions. [2024-06-28 02:22:25,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 271 transitions, 3697 flow [2024-06-28 02:22:25,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:25,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:25,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 230 transitions. [2024-06-28 02:22:25,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6865671641791045 [2024-06-28 02:22:25,723 INFO L175 Difference]: Start difference. First operand has 218 places, 257 transitions, 3263 flow. Second operand 5 states and 230 transitions. [2024-06-28 02:22:25,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 271 transitions, 3697 flow [2024-06-28 02:22:25,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 271 transitions, 3579 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:25,914 INFO L231 Difference]: Finished difference. Result has 216 places, 258 transitions, 3214 flow [2024-06-28 02:22:25,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=3147, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3214, PETRI_PLACES=216, PETRI_TRANSITIONS=258} [2024-06-28 02:22:25,914 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 156 predicate places. [2024-06-28 02:22:25,914 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 258 transitions, 3214 flow [2024-06-28 02:22:25,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:25,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:25,915 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] [2024-06-28 02:22:25,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:22:25,915 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)] === [2024-06-28 02:22:25,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:25,915 INFO L85 PathProgramCache]: Analyzing trace with hash -435163537, now seen corresponding path program 2 times [2024-06-28 02:22:25,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:25,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27770099] [2024-06-28 02:22:25,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:25,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:25,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:25,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27770099] [2024-06-28 02:22:25,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27770099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:25,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:25,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:25,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915743640] [2024-06-28 02:22:25,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:25,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:25,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:25,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:25,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:26,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:26,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 258 transitions, 3214 flow. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:26,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:26,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:26,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:26,465 INFO L124 PetriNetUnfolderBase]: 1384/3254 cut-off events. [2024-06-28 02:22:26,465 INFO L125 PetriNetUnfolderBase]: For 128886/129121 co-relation queries the response was YES. [2024-06-28 02:22:26,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21658 conditions, 3254 events. 1384/3254 cut-off events. For 128886/129121 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23624 event pairs, 486 based on Foata normal form. 53/3249 useless extension candidates. Maximal degree in co-relation 17893. Up to 1341 conditions per place. [2024-06-28 02:22:26,498 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 142 selfloop transitions, 15 changer transitions 1/276 dead transitions. [2024-06-28 02:22:26,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 276 transitions, 3777 flow [2024-06-28 02:22:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:26,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:26,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 231 transitions. [2024-06-28 02:22:26,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6895522388059702 [2024-06-28 02:22:26,499 INFO L175 Difference]: Start difference. First operand has 216 places, 258 transitions, 3214 flow. Second operand 5 states and 231 transitions. [2024-06-28 02:22:26,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 276 transitions, 3777 flow [2024-06-28 02:22:26,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 276 transitions, 3746 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:26,657 INFO L231 Difference]: Finished difference. Result has 219 places, 259 transitions, 3233 flow [2024-06-28 02:22:26,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=3184, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3233, PETRI_PLACES=219, PETRI_TRANSITIONS=259} [2024-06-28 02:22:26,658 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 159 predicate places. [2024-06-28 02:22:26,658 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 259 transitions, 3233 flow [2024-06-28 02:22:26,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:26,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:26,658 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] [2024-06-28 02:22:26,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:22:26,658 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)] === [2024-06-28 02:22:26,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:26,659 INFO L85 PathProgramCache]: Analyzing trace with hash -435223987, now seen corresponding path program 3 times [2024-06-28 02:22:26,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:26,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753894672] [2024-06-28 02:22:26,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:26,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:26,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:26,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753894672] [2024-06-28 02:22:26,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753894672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:26,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:26,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:26,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050857174] [2024-06-28 02:22:26,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:26,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:26,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:26,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:26,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:26,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:26,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 259 transitions, 3233 flow. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:26,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:26,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:26,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:27,180 INFO L124 PetriNetUnfolderBase]: 1376/3241 cut-off events. [2024-06-28 02:22:27,180 INFO L125 PetriNetUnfolderBase]: For 127807/128044 co-relation queries the response was YES. [2024-06-28 02:22:27,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21676 conditions, 3241 events. 1376/3241 cut-off events. For 127807/128044 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23513 event pairs, 482 based on Foata normal form. 47/3228 useless extension candidates. Maximal degree in co-relation 17997. Up to 1341 conditions per place. [2024-06-28 02:22:27,213 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 135 selfloop transitions, 22 changer transitions 2/277 dead transitions. [2024-06-28 02:22:27,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 277 transitions, 3805 flow [2024-06-28 02:22:27,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:27,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:27,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 231 transitions. [2024-06-28 02:22:27,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6895522388059702 [2024-06-28 02:22:27,215 INFO L175 Difference]: Start difference. First operand has 219 places, 259 transitions, 3233 flow. Second operand 5 states and 231 transitions. [2024-06-28 02:22:27,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 277 transitions, 3805 flow [2024-06-28 02:22:27,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 277 transitions, 3758 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:27,375 INFO L231 Difference]: Finished difference. Result has 221 places, 259 transitions, 3234 flow [2024-06-28 02:22:27,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=3186, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3234, PETRI_PLACES=221, PETRI_TRANSITIONS=259} [2024-06-28 02:22:27,376 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 161 predicate places. [2024-06-28 02:22:27,376 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 259 transitions, 3234 flow [2024-06-28 02:22:27,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:27,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:27,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:27,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:22:27,377 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:27,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:27,377 INFO L85 PathProgramCache]: Analyzing trace with hash -373458424, now seen corresponding path program 1 times [2024-06-28 02:22:27,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:27,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659829307] [2024-06-28 02:22:27,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:27,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:27,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:27,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659829307] [2024-06-28 02:22:27,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659829307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:27,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:27,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:27,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027796074] [2024-06-28 02:22:27,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:27,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:27,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:27,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:27,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:27,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:27,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 259 transitions, 3234 flow. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:27,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:27,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:27,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:27,900 INFO L124 PetriNetUnfolderBase]: 1367/3219 cut-off events. [2024-06-28 02:22:27,900 INFO L125 PetriNetUnfolderBase]: For 132669/132898 co-relation queries the response was YES. [2024-06-28 02:22:27,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21490 conditions, 3219 events. 1367/3219 cut-off events. For 132669/132898 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23379 event pairs, 444 based on Foata normal form. 54/3213 useless extension candidates. Maximal degree in co-relation 17794. Up to 1142 conditions per place. [2024-06-28 02:22:27,934 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 129 selfloop transitions, 31 changer transitions 1/279 dead transitions. [2024-06-28 02:22:27,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 279 transitions, 3885 flow [2024-06-28 02:22:27,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:27,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:27,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2024-06-28 02:22:27,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6955223880597015 [2024-06-28 02:22:27,935 INFO L175 Difference]: Start difference. First operand has 221 places, 259 transitions, 3234 flow. Second operand 5 states and 233 transitions. [2024-06-28 02:22:27,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 279 transitions, 3885 flow [2024-06-28 02:22:28,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 279 transitions, 3838 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 02:22:28,121 INFO L231 Difference]: Finished difference. Result has 223 places, 264 transitions, 3362 flow [2024-06-28 02:22:28,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=3189, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3362, PETRI_PLACES=223, PETRI_TRANSITIONS=264} [2024-06-28 02:22:28,121 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 163 predicate places. [2024-06-28 02:22:28,122 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 264 transitions, 3362 flow [2024-06-28 02:22:28,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:28,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:28,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:28,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:22:28,123 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:28,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:28,123 INFO L85 PathProgramCache]: Analyzing trace with hash -373459416, now seen corresponding path program 1 times [2024-06-28 02:22:28,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:28,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197195334] [2024-06-28 02:22:28,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:28,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:28,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:28,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197195334] [2024-06-28 02:22:28,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197195334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:28,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:28,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:28,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118712859] [2024-06-28 02:22:28,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:28,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:22:28,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:28,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:22:28,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:22:28,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 67 [2024-06-28 02:22:28,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 264 transitions, 3362 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:28,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:28,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 67 [2024-06-28 02:22:28,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:28,600 INFO L124 PetriNetUnfolderBase]: 1208/2776 cut-off events. [2024-06-28 02:22:28,601 INFO L125 PetriNetUnfolderBase]: For 58241/58510 co-relation queries the response was YES. [2024-06-28 02:22:28,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15912 conditions, 2776 events. 1208/2776 cut-off events. For 58241/58510 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 19388 event pairs, 655 based on Foata normal form. 71/2759 useless extension candidates. Maximal degree in co-relation 13623. Up to 1680 conditions per place. [2024-06-28 02:22:28,627 INFO L140 encePairwiseOnDemand]: 54/67 looper letters, 115 selfloop transitions, 28 changer transitions 1/250 dead transitions. [2024-06-28 02:22:28,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 250 transitions, 3399 flow [2024-06-28 02:22:28,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:28,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:28,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 226 transitions. [2024-06-28 02:22:28,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6746268656716418 [2024-06-28 02:22:28,628 INFO L175 Difference]: Start difference. First operand has 223 places, 264 transitions, 3362 flow. Second operand 5 states and 226 transitions. [2024-06-28 02:22:28,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 250 transitions, 3399 flow [2024-06-28 02:22:28,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 250 transitions, 3223 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 02:22:28,790 INFO L231 Difference]: Finished difference. Result has 220 places, 233 transitions, 2865 flow [2024-06-28 02:22:28,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=2766, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2865, PETRI_PLACES=220, PETRI_TRANSITIONS=233} [2024-06-28 02:22:28,791 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 160 predicate places. [2024-06-28 02:22:28,791 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 233 transitions, 2865 flow [2024-06-28 02:22:28,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:28,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:28,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:28,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:22:28,792 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:28,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:28,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1786782764, now seen corresponding path program 1 times [2024-06-28 02:22:28,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:28,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122539037] [2024-06-28 02:22:28,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:28,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:28,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:28,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:28,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122539037] [2024-06-28 02:22:28,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122539037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:28,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:28,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:28,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971781654] [2024-06-28 02:22:28,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:28,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:28,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:28,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:28,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:28,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:28,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 233 transitions, 2865 flow. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:28,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:28,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:28,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:29,196 INFO L124 PetriNetUnfolderBase]: 1090/2666 cut-off events. [2024-06-28 02:22:29,196 INFO L125 PetriNetUnfolderBase]: For 95032/95182 co-relation queries the response was YES. [2024-06-28 02:22:29,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16533 conditions, 2666 events. 1090/2666 cut-off events. For 95032/95182 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 19115 event pairs, 336 based on Foata normal form. 31/2648 useless extension candidates. Maximal degree in co-relation 15042. Up to 835 conditions per place. [2024-06-28 02:22:29,272 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 115 selfloop transitions, 34 changer transitions 1/253 dead transitions. [2024-06-28 02:22:29,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 253 transitions, 3451 flow [2024-06-28 02:22:29,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:29,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:29,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 236 transitions. [2024-06-28 02:22:29,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7044776119402985 [2024-06-28 02:22:29,278 INFO L175 Difference]: Start difference. First operand has 220 places, 233 transitions, 2865 flow. Second operand 5 states and 236 transitions. [2024-06-28 02:22:29,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 253 transitions, 3451 flow [2024-06-28 02:22:29,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 253 transitions, 3355 flow, removed 31 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:29,432 INFO L231 Difference]: Finished difference. Result has 223 places, 236 transitions, 2902 flow [2024-06-28 02:22:29,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=2769, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2902, PETRI_PLACES=223, PETRI_TRANSITIONS=236} [2024-06-28 02:22:29,432 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 163 predicate places. [2024-06-28 02:22:29,432 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 236 transitions, 2902 flow [2024-06-28 02:22:29,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:29,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:29,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:29,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:22:29,433 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:29,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:29,433 INFO L85 PathProgramCache]: Analyzing trace with hash 906237214, now seen corresponding path program 2 times [2024-06-28 02:22:29,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:29,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558205348] [2024-06-28 02:22:29,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:29,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:29,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:29,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:29,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558205348] [2024-06-28 02:22:29,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558205348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:29,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:29,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:29,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430426263] [2024-06-28 02:22:29,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:29,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:29,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:29,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:29,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:29,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:29,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 236 transitions, 2902 flow. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:29,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:29,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:29,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:29,852 INFO L124 PetriNetUnfolderBase]: 1067/2627 cut-off events. [2024-06-28 02:22:29,852 INFO L125 PetriNetUnfolderBase]: For 94200/94349 co-relation queries the response was YES. [2024-06-28 02:22:29,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15692 conditions, 2627 events. 1067/2627 cut-off events. For 94200/94349 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 18861 event pairs, 337 based on Foata normal form. 45/2619 useless extension candidates. Maximal degree in co-relation 14365. Up to 860 conditions per place. [2024-06-28 02:22:29,877 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 126 selfloop transitions, 26 changer transitions 1/256 dead transitions. [2024-06-28 02:22:29,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 256 transitions, 3511 flow [2024-06-28 02:22:29,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:29,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:29,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 238 transitions. [2024-06-28 02:22:29,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7104477611940299 [2024-06-28 02:22:29,879 INFO L175 Difference]: Start difference. First operand has 223 places, 236 transitions, 2902 flow. Second operand 5 states and 238 transitions. [2024-06-28 02:22:29,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 256 transitions, 3511 flow [2024-06-28 02:22:30,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 256 transitions, 3449 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 02:22:30,042 INFO L231 Difference]: Finished difference. Result has 227 places, 239 transitions, 2996 flow [2024-06-28 02:22:30,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=2843, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2996, PETRI_PLACES=227, PETRI_TRANSITIONS=239} [2024-06-28 02:22:30,042 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 167 predicate places. [2024-06-28 02:22:30,042 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 239 transitions, 2996 flow [2024-06-28 02:22:30,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:30,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:30,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:30,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:22:30,043 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:30,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:30,043 INFO L85 PathProgramCache]: Analyzing trace with hash -580150066, now seen corresponding path program 1 times [2024-06-28 02:22:30,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:30,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147963488] [2024-06-28 02:22:30,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:30,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:30,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:30,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147963488] [2024-06-28 02:22:30,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147963488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:30,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:30,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:30,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630404928] [2024-06-28 02:22:30,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:30,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:30,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:30,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:30,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:30,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:30,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 239 transitions, 2996 flow. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:30,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:30,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:30,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:30,448 INFO L124 PetriNetUnfolderBase]: 1072/2662 cut-off events. [2024-06-28 02:22:30,448 INFO L125 PetriNetUnfolderBase]: For 82027/82165 co-relation queries the response was YES. [2024-06-28 02:22:30,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15656 conditions, 2662 events. 1072/2662 cut-off events. For 82027/82165 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 19250 event pairs, 323 based on Foata normal form. 33/2647 useless extension candidates. Maximal degree in co-relation 14311. Up to 835 conditions per place. [2024-06-28 02:22:30,472 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 112 selfloop transitions, 35 changer transitions 9/255 dead transitions. [2024-06-28 02:22:30,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 255 transitions, 3521 flow [2024-06-28 02:22:30,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:30,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:30,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 234 transitions. [2024-06-28 02:22:30,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6985074626865672 [2024-06-28 02:22:30,477 INFO L175 Difference]: Start difference. First operand has 227 places, 239 transitions, 2996 flow. Second operand 5 states and 234 transitions. [2024-06-28 02:22:30,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 255 transitions, 3521 flow [2024-06-28 02:22:30,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 255 transitions, 3439 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:30,645 INFO L231 Difference]: Finished difference. Result has 229 places, 231 transitions, 2883 flow [2024-06-28 02:22:30,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2883, PETRI_PLACES=229, PETRI_TRANSITIONS=231} [2024-06-28 02:22:30,646 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 169 predicate places. [2024-06-28 02:22:30,646 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 231 transitions, 2883 flow [2024-06-28 02:22:30,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:30,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:30,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:30,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:22:30,647 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:30,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:30,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1269845506, now seen corresponding path program 2 times [2024-06-28 02:22:30,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:30,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878343887] [2024-06-28 02:22:30,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:30,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:30,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:30,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:30,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878343887] [2024-06-28 02:22:30,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878343887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:30,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:30,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:30,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748903292] [2024-06-28 02:22:30,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:30,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:30,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:30,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:30,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:30,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:30,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 231 transitions, 2883 flow. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:30,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:30,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:30,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:31,063 INFO L124 PetriNetUnfolderBase]: 1046/2627 cut-off events. [2024-06-28 02:22:31,063 INFO L125 PetriNetUnfolderBase]: For 76843/76973 co-relation queries the response was YES. [2024-06-28 02:22:31,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15189 conditions, 2627 events. 1046/2627 cut-off events. For 76843/76973 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 19044 event pairs, 336 based on Foata normal form. 28/2609 useless extension candidates. Maximal degree in co-relation 13927. Up to 868 conditions per place. [2024-06-28 02:22:31,087 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 105 selfloop transitions, 18 changer transitions 35/244 dead transitions. [2024-06-28 02:22:31,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 244 transitions, 3377 flow [2024-06-28 02:22:31,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:31,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:31,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 231 transitions. [2024-06-28 02:22:31,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6895522388059702 [2024-06-28 02:22:31,088 INFO L175 Difference]: Start difference. First operand has 229 places, 231 transitions, 2883 flow. Second operand 5 states and 231 transitions. [2024-06-28 02:22:31,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 244 transitions, 3377 flow [2024-06-28 02:22:31,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 244 transitions, 3231 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:31,267 INFO L231 Difference]: Finished difference. Result has 228 places, 198 transitions, 2367 flow [2024-06-28 02:22:31,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=2737, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2367, PETRI_PLACES=228, PETRI_TRANSITIONS=198} [2024-06-28 02:22:31,268 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 168 predicate places. [2024-06-28 02:22:31,268 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 198 transitions, 2367 flow [2024-06-28 02:22:31,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:31,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:31,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:31,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:22:31,268 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:31,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:31,269 INFO L85 PathProgramCache]: Analyzing trace with hash 885680432, now seen corresponding path program 2 times [2024-06-28 02:22:31,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:31,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745789870] [2024-06-28 02:22:31,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:31,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:31,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:31,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745789870] [2024-06-28 02:22:31,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745789870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:31,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:31,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:31,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298951380] [2024-06-28 02:22:31,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:31,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:22:31,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:31,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:22:31,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:22:31,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 67 [2024-06-28 02:22:31,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 198 transitions, 2367 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:31,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:31,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 67 [2024-06-28 02:22:31,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:31,548 INFO L124 PetriNetUnfolderBase]: 761/1848 cut-off events. [2024-06-28 02:22:31,548 INFO L125 PetriNetUnfolderBase]: For 26229/26332 co-relation queries the response was YES. [2024-06-28 02:22:31,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9358 conditions, 1848 events. 761/1848 cut-off events. For 26229/26332 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 12386 event pairs, 463 based on Foata normal form. 43/1840 useless extension candidates. Maximal degree in co-relation 8963. Up to 1125 conditions per place. [2024-06-28 02:22:31,563 INFO L140 encePairwiseOnDemand]: 57/67 looper letters, 62 selfloop transitions, 0 changer transitions 50/174 dead transitions. [2024-06-28 02:22:31,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 174 transitions, 2248 flow [2024-06-28 02:22:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:31,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:31,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 213 transitions. [2024-06-28 02:22:31,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6358208955223881 [2024-06-28 02:22:31,564 INFO L175 Difference]: Start difference. First operand has 228 places, 198 transitions, 2367 flow. Second operand 5 states and 213 transitions. [2024-06-28 02:22:31,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 174 transitions, 2248 flow [2024-06-28 02:22:31,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 174 transitions, 1964 flow, removed 29 selfloop flow, removed 23 redundant places. [2024-06-28 02:22:31,638 INFO L231 Difference]: Finished difference. Result has 205 places, 124 transitions, 1287 flow [2024-06-28 02:22:31,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1287, PETRI_PLACES=205, PETRI_TRANSITIONS=124} [2024-06-28 02:22:31,639 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 145 predicate places. [2024-06-28 02:22:31,639 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 124 transitions, 1287 flow [2024-06-28 02:22:31,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:31,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:31,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:31,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:22:31,639 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:31,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:31,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2064755952, now seen corresponding path program 2 times [2024-06-28 02:22:31,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:31,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475240800] [2024-06-28 02:22:31,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:31,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:31,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:31,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475240800] [2024-06-28 02:22:31,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475240800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:31,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:31,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:22:31,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345595385] [2024-06-28 02:22:31,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:31,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:31,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:31,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:31,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:31,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:31,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 124 transitions, 1287 flow. Second operand has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:31,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:31,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:31,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:31,841 INFO L124 PetriNetUnfolderBase]: 450/1213 cut-off events. [2024-06-28 02:22:31,841 INFO L125 PetriNetUnfolderBase]: For 25209/25287 co-relation queries the response was YES. [2024-06-28 02:22:31,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5927 conditions, 1213 events. 450/1213 cut-off events. For 25209/25287 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7555 event pairs, 191 based on Foata normal form. 26/1220 useless extension candidates. Maximal degree in co-relation 5856. Up to 458 conditions per place. [2024-06-28 02:22:31,848 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 59 selfloop transitions, 10 changer transitions 34/135 dead transitions. [2024-06-28 02:22:31,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 135 transitions, 1637 flow [2024-06-28 02:22:31,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:31,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2024-06-28 02:22:31,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6686567164179105 [2024-06-28 02:22:31,849 INFO L175 Difference]: Start difference. First operand has 205 places, 124 transitions, 1287 flow. Second operand 5 states and 224 transitions. [2024-06-28 02:22:31,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 135 transitions, 1637 flow [2024-06-28 02:22:31,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 135 transitions, 1499 flow, removed 45 selfloop flow, removed 16 redundant places. [2024-06-28 02:22:31,890 INFO L231 Difference]: Finished difference. Result has 179 places, 93 transitions, 935 flow [2024-06-28 02:22:31,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=935, PETRI_PLACES=179, PETRI_TRANSITIONS=93} [2024-06-28 02:22:31,890 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 119 predicate places. [2024-06-28 02:22:31,890 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 93 transitions, 935 flow [2024-06-28 02:22:31,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:31,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:31,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:31,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:22:31,891 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:31,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:31,891 INFO L85 PathProgramCache]: Analyzing trace with hash 312717273, now seen corresponding path program 1 times [2024-06-28 02:22:31,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:31,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622828252] [2024-06-28 02:22:31,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:31,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:31,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:31,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:31,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622828252] [2024-06-28 02:22:31,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622828252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:31,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:31,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:31,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199144482] [2024-06-28 02:22:31,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:31,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:31,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:31,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:31,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:31,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:31,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 93 transitions, 935 flow. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:31,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:31,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:31,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:32,071 INFO L124 PetriNetUnfolderBase]: 354/956 cut-off events. [2024-06-28 02:22:32,071 INFO L125 PetriNetUnfolderBase]: For 14162/14217 co-relation queries the response was YES. [2024-06-28 02:22:32,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4269 conditions, 956 events. 354/956 cut-off events. For 14162/14217 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5527 event pairs, 93 based on Foata normal form. 26/973 useless extension candidates. Maximal degree in co-relation 4209. Up to 294 conditions per place. [2024-06-28 02:22:32,077 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 52 selfloop transitions, 22 changer transitions 2/108 dead transitions. [2024-06-28 02:22:32,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 108 transitions, 1245 flow [2024-06-28 02:22:32,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:32,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2024-06-28 02:22:32,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6805970149253732 [2024-06-28 02:22:32,079 INFO L175 Difference]: Start difference. First operand has 179 places, 93 transitions, 935 flow. Second operand 5 states and 228 transitions. [2024-06-28 02:22:32,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 108 transitions, 1245 flow [2024-06-28 02:22:32,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 108 transitions, 1099 flow, removed 38 selfloop flow, removed 17 redundant places. [2024-06-28 02:22:32,103 INFO L231 Difference]: Finished difference. Result has 151 places, 93 transitions, 870 flow [2024-06-28 02:22:32,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=870, PETRI_PLACES=151, PETRI_TRANSITIONS=93} [2024-06-28 02:22:32,104 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 91 predicate places. [2024-06-28 02:22:32,104 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 93 transitions, 870 flow [2024-06-28 02:22:32,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:32,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:32,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:32,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:22:32,105 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:32,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:32,105 INFO L85 PathProgramCache]: Analyzing trace with hash 454639271, now seen corresponding path program 1 times [2024-06-28 02:22:32,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:32,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168619192] [2024-06-28 02:22:32,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:32,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:32,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:32,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168619192] [2024-06-28 02:22:32,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168619192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:32,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:32,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:32,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953000889] [2024-06-28 02:22:32,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:32,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:32,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:32,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:32,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:32,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 93 transitions, 870 flow. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:32,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:32,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:32,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:32,288 INFO L124 PetriNetUnfolderBase]: 351/937 cut-off events. [2024-06-28 02:22:32,288 INFO L125 PetriNetUnfolderBase]: For 8915/8953 co-relation queries the response was YES. [2024-06-28 02:22:32,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3724 conditions, 937 events. 351/937 cut-off events. For 8915/8953 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5336 event pairs, 151 based on Foata normal form. 26/960 useless extension candidates. Maximal degree in co-relation 3673. Up to 391 conditions per place. [2024-06-28 02:22:32,293 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 52 selfloop transitions, 18 changer transitions 2/104 dead transitions. [2024-06-28 02:22:32,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 104 transitions, 1092 flow [2024-06-28 02:22:32,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:32,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2024-06-28 02:22:32,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6597014925373135 [2024-06-28 02:22:32,305 INFO L175 Difference]: Start difference. First operand has 151 places, 93 transitions, 870 flow. Second operand 5 states and 221 transitions. [2024-06-28 02:22:32,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 104 transitions, 1092 flow [2024-06-28 02:22:32,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 104 transitions, 1037 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 02:22:32,325 INFO L231 Difference]: Finished difference. Result has 150 places, 93 transitions, 860 flow [2024-06-28 02:22:32,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=860, PETRI_PLACES=150, PETRI_TRANSITIONS=93} [2024-06-28 02:22:32,325 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 90 predicate places. [2024-06-28 02:22:32,325 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 93 transitions, 860 flow [2024-06-28 02:22:32,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:32,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:32,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:32,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:22:32,326 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:32,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:32,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1218674732, now seen corresponding path program 1 times [2024-06-28 02:22:32,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:32,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220625964] [2024-06-28 02:22:32,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:32,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:32,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:32,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220625964] [2024-06-28 02:22:32,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220625964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:32,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:32,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:32,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979741333] [2024-06-28 02:22:32,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:32,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:32,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:32,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:32,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:32,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:32,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 93 transitions, 860 flow. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:32,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:32,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:32,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:32,498 INFO L124 PetriNetUnfolderBase]: 338/910 cut-off events. [2024-06-28 02:22:32,499 INFO L125 PetriNetUnfolderBase]: For 7774/7809 co-relation queries the response was YES. [2024-06-28 02:22:32,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 910 events. 338/910 cut-off events. For 7774/7809 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5218 event pairs, 85 based on Foata normal form. 26/931 useless extension candidates. Maximal degree in co-relation 3454. Up to 260 conditions per place. [2024-06-28 02:22:32,503 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 36 selfloop transitions, 10 changer transitions 38/107 dead transitions. [2024-06-28 02:22:32,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 107 transitions, 1096 flow [2024-06-28 02:22:32,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:32,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:32,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2024-06-28 02:22:32,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6776119402985075 [2024-06-28 02:22:32,504 INFO L175 Difference]: Start difference. First operand has 150 places, 93 transitions, 860 flow. Second operand 5 states and 227 transitions. [2024-06-28 02:22:32,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 107 transitions, 1096 flow [2024-06-28 02:22:32,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 107 transitions, 1059 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 02:22:32,519 INFO L231 Difference]: Finished difference. Result has 152 places, 63 transitions, 557 flow [2024-06-28 02:22:32,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=557, PETRI_PLACES=152, PETRI_TRANSITIONS=63} [2024-06-28 02:22:32,519 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 92 predicate places. [2024-06-28 02:22:32,520 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 63 transitions, 557 flow [2024-06-28 02:22:32,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:32,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:32,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:32,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:22:32,520 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:32,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:32,520 INFO L85 PathProgramCache]: Analyzing trace with hash 816148400, now seen corresponding path program 1 times [2024-06-28 02:22:32,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:32,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731331179] [2024-06-28 02:22:32,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:32,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:32,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:32,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731331179] [2024-06-28 02:22:32,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731331179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:32,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:32,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:32,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761160427] [2024-06-28 02:22:32,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:32,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:32,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:32,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:32,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:32,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:32,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 63 transitions, 557 flow. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:32,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:32,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:32,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:32,634 INFO L124 PetriNetUnfolderBase]: 159/424 cut-off events. [2024-06-28 02:22:32,635 INFO L125 PetriNetUnfolderBase]: For 5117/5139 co-relation queries the response was YES. [2024-06-28 02:22:32,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1774 conditions, 424 events. 159/424 cut-off events. For 5117/5139 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1817 event pairs, 46 based on Foata normal form. 18/433 useless extension candidates. Maximal degree in co-relation 1724. Up to 129 conditions per place. [2024-06-28 02:22:32,637 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 33 selfloop transitions, 12 changer transitions 0/68 dead transitions. [2024-06-28 02:22:32,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 68 transitions, 657 flow [2024-06-28 02:22:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:32,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:32,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 211 transitions. [2024-06-28 02:22:32,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6298507462686567 [2024-06-28 02:22:32,639 INFO L175 Difference]: Start difference. First operand has 152 places, 63 transitions, 557 flow. Second operand 5 states and 211 transitions. [2024-06-28 02:22:32,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 68 transitions, 657 flow [2024-06-28 02:22:32,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 68 transitions, 484 flow, removed 19 selfloop flow, removed 44 redundant places. [2024-06-28 02:22:32,645 INFO L231 Difference]: Finished difference. Result has 98 places, 63 transitions, 412 flow [2024-06-28 02:22:32,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=412, PETRI_PLACES=98, PETRI_TRANSITIONS=63} [2024-06-28 02:22:32,646 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 38 predicate places. [2024-06-28 02:22:32,646 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 63 transitions, 412 flow [2024-06-28 02:22:32,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:32,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:22:32,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:32,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:22:32,646 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:22:32,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:22:32,647 INFO L85 PathProgramCache]: Analyzing trace with hash -264753018, now seen corresponding path program 1 times [2024-06-28 02:22:32,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:22:32,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521270857] [2024-06-28 02:22:32,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:22:32,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:22:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:22:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:22:32,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:22:32,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521270857] [2024-06-28 02:22:32,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521270857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:22:32,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:22:32,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:22:32,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781650681] [2024-06-28 02:22:32,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:22:32,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:22:32,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:22:32,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:22:32,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:22:32,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2024-06-28 02:22:32,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 63 transitions, 412 flow. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:32,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:22:32,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2024-06-28 02:22:32,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:22:32,772 INFO L124 PetriNetUnfolderBase]: 143/399 cut-off events. [2024-06-28 02:22:32,772 INFO L125 PetriNetUnfolderBase]: For 2045/2063 co-relation queries the response was YES. [2024-06-28 02:22:32,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 399 events. 143/399 cut-off events. For 2045/2063 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1753 event pairs, 62 based on Foata normal form. 22/413 useless extension candidates. Maximal degree in co-relation 1192. Up to 154 conditions per place. [2024-06-28 02:22:32,774 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2024-06-28 02:22:32,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 67 transitions, 474 flow [2024-06-28 02:22:32,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:22:32,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:22:32,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2024-06-28 02:22:32,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6238805970149254 [2024-06-28 02:22:32,774 INFO L175 Difference]: Start difference. First operand has 98 places, 63 transitions, 412 flow. Second operand 5 states and 209 transitions. [2024-06-28 02:22:32,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 67 transitions, 474 flow [2024-06-28 02:22:32,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 67 transitions, 398 flow, removed 0 selfloop flow, removed 21 redundant places. [2024-06-28 02:22:32,777 INFO L231 Difference]: Finished difference. Result has 80 places, 0 transitions, 0 flow [2024-06-28 02:22:32,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=80, PETRI_TRANSITIONS=0} [2024-06-28 02:22:32,777 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 20 predicate places. [2024-06-28 02:22:32,777 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 0 transitions, 0 flow [2024-06-28 02:22:32,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:22:32,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 02:22:32,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 02:22:32,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 02:22:32,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 02:22:32,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:22:32,780 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:22:32,783 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 02:22:32,783 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 02:22:32,786 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 02:22:32,786 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 02:22:32,787 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 02:22:32 BasicIcfg [2024-06-28 02:22:32,787 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 02:22:32,787 INFO L158 Benchmark]: Toolchain (without parser) took 39174.56ms. Allocated memory was 192.9MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 124.5MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 187.2MB. Max. memory is 16.1GB. [2024-06-28 02:22:32,788 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:22:32,788 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 192.9MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:22:32,788 INFO L158 Benchmark]: CACSL2BoogieTranslator took 508.58ms. Allocated memory is still 192.9MB. Free memory was 124.5MB in the beginning and 145.0MB in the end (delta: -20.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-06-28 02:22:32,788 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.17ms. Allocated memory is still 192.9MB. Free memory was 145.0MB in the beginning and 142.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 02:22:32,788 INFO L158 Benchmark]: Boogie Preprocessor took 63.36ms. Allocated memory is still 192.9MB. Free memory was 142.9MB in the beginning and 140.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 02:22:32,788 INFO L158 Benchmark]: RCFGBuilder took 480.63ms. Allocated memory is still 192.9MB. Free memory was 140.8MB in the beginning and 117.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-06-28 02:22:32,789 INFO L158 Benchmark]: TraceAbstraction took 38057.28ms. Allocated memory was 192.9MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 116.7MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 181.6MB. Max. memory is 16.1GB. [2024-06-28 02:22:32,790 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 100.7MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 192.9MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 508.58ms. Allocated memory is still 192.9MB. Free memory was 124.5MB in the beginning and 145.0MB in the end (delta: -20.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.17ms. Allocated memory is still 192.9MB. Free memory was 145.0MB in the beginning and 142.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.36ms. Allocated memory is still 192.9MB. Free memory was 142.9MB in the beginning and 140.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 480.63ms. Allocated memory is still 192.9MB. Free memory was 140.8MB in the beginning and 117.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 38057.28ms. Allocated memory was 192.9MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 116.7MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 181.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 819]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 820]: 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, 104 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: 37.9s, OverallIterations: 59, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 34.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6712 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4314 mSDsluCounter, 2513 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1873 mSDsCounter, 347 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8723 IncrementalHoareTripleChecker+Invalid, 9070 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 347 mSolverCounterUnsat, 640 mSDtfsCounter, 8723 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 207 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3655occurred in iteration=38, InterpolantAutomatonStates: 287, 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, 2.2s InterpolantComputationTime, 1142 NumberOfCodeBlocks, 1142 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 1083 ConstructedInterpolants, 0 QuantifiedInterpolants, 3625 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 59 InterpolantComputations, 59 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! [2024-06-28 02:22:32,809 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