./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/fib_unsafe-5.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/fib_unsafe-5.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/fib_unsafe-5.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/fib_unsafe-5.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-cde23df-m [2024-06-14 14:21:35,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 14:21:35,700 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 14:21:35,703 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 14:21:35,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 14:21:35,738 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 14:21:35,739 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 14:21:35,740 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 14:21:35,740 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 14:21:35,743 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 14:21:35,743 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 14:21:35,744 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 14:21:35,744 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 14:21:35,745 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 14:21:35,745 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 14:21:35,746 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 14:21:35,746 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 14:21:35,747 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 14:21:35,747 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 14:21:35,747 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 14:21:35,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 14:21:35,748 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 14:21:35,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 14:21:35,748 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 14:21:35,748 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 14:21:35,748 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 14:21:35,749 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 14:21:35,749 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 14:21:35,749 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 14:21:35,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 14:21:35,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 14:21:35,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 14:21:35,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:21:35,751 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 14:21:35,751 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 14:21:35,751 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 14:21:35,752 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 14:21:35,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 14:21:35,752 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 14:21:35,752 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 14:21:35,752 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 14:21:35,753 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 14:21:35,753 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 14:21:35,753 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 14:21:35,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 14:21:35,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 14:21:35,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 14:21:35,937 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 14:21:35,938 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 14:21:35,938 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/fib_unsafe-5.yml/witness.yml [2024-06-14 14:21:36,080 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 14:21:36,081 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 14:21:36,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_unsafe-5.i [2024-06-14 14:21:37,148 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 14:21:37,430 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 14:21:37,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-5.i [2024-06-14 14:21:37,441 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eb4498fe/584a3feda635460792358a3fa7869169/FLAG381421c2e [2024-06-14 14:21:37,465 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eb4498fe/584a3feda635460792358a3fa7869169 [2024-06-14 14:21:37,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 14:21:37,466 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 14:21:37,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 14:21:37,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 14:21:37,471 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 14:21:37,471 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:21:36" (1/2) ... [2024-06-14 14:21:37,472 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@329d423c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:37, skipping insertion in model container [2024-06-14 14:21:37,472 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:21:36" (1/2) ... [2024-06-14 14:21:37,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7f8eee31 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:37, skipping insertion in model container [2024-06-14 14:21:37,473 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:21:37" (2/2) ... [2024-06-14 14:21:37,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@329d423c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:37, skipping insertion in model container [2024-06-14 14:21:37,474 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:21:37" (2/2) ... [2024-06-14 14:21:37,474 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 14:21:37,509 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 14:21:37,510 INFO L97 edCorrectnessWitness]: Location invariant before [L721-L721] ((((((((! multithreaded || 0 <= cur) && (! multithreaded || 0 <= next)) && (! multithreaded || ((0 <= i && 1 <= i) && i != 0))) && (! multithreaded || 0 <= p)) && (! multithreaded || 0 <= q)) && (! multithreaded || ((((0 <= i && 0 <= j) && 1 <= j) && i != 0) && j != 0))) && (! multithreaded || 0 <= x)) && (! multithreaded || 0 <= prev)) && (! multithreaded || ((0 <= j && 1 <= j) && j != 0)) [2024-06-14 14:21:37,510 INFO L97 edCorrectnessWitness]: Location invariant before [L722-L722] ((((((((! multithreaded || 0 <= cur) && (! multithreaded || 0 <= next)) && (! multithreaded || ((0 <= i && 1 <= i) && i != 0))) && (! multithreaded || 0 <= p)) && (! multithreaded || 0 <= q)) && (! multithreaded || ((((0 <= i && 0 <= j) && 1 <= j) && i != 0) && j != 0))) && (! multithreaded || 0 <= x)) && (! multithreaded || 0 <= prev)) && (! multithreaded || ((0 <= j && 1 <= j) && j != 0)) [2024-06-14 14:21:37,510 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 14:21:37,510 INFO L106 edCorrectnessWitness]: ghost_update [L720-L720] multithreaded = 1; [2024-06-14 14:21:37,542 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 14:21:37,767 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:21:37,775 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 14:21:37,861 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:21:37,893 INFO L206 MainTranslator]: Completed translation [2024-06-14 14:21:37,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:37 WrapperNode [2024-06-14 14:21:37,894 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 14:21:37,895 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 14:21:37,895 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 14:21:37,895 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 14:21:37,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:37" (1/1) ... [2024-06-14 14:21:37,916 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:37" (1/1) ... [2024-06-14 14:21:37,934 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2024-06-14 14:21:37,934 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 14:21:37,935 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 14:21:37,935 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 14:21:37,935 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 14:21:37,949 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:37" (1/1) ... [2024-06-14 14:21:37,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:37" (1/1) ... [2024-06-14 14:21:37,952 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:37" (1/1) ... [2024-06-14 14:21:37,962 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]. [2024-06-14 14:21:37,962 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:37" (1/1) ... [2024-06-14 14:21:37,962 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:37" (1/1) ... [2024-06-14 14:21:37,966 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:37" (1/1) ... [2024-06-14 14:21:37,968 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:37" (1/1) ... [2024-06-14 14:21:37,970 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:37" (1/1) ... [2024-06-14 14:21:37,970 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:37" (1/1) ... [2024-06-14 14:21:37,972 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 14:21:37,973 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 14:21:37,973 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 14:21:37,973 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 14:21:37,974 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:37" (1/1) ... [2024-06-14 14:21:37,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:21:37,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:21:37,998 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) [2024-06-14 14:21:38,004 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 [2024-06-14 14:21:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-14 14:21:38,027 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-14 14:21:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-14 14:21:38,027 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-14 14:21:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 14:21:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 14:21:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 14:21:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 14:21:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 14:21:38,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 14:21:38,030 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 14:21:38,122 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 14:21:38,123 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 14:21:38,258 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 14:21:38,258 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 14:21:38,338 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 14:21:38,338 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-06-14 14:21:38,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:21:38 BoogieIcfgContainer [2024-06-14 14:21:38,338 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 14:21:38,340 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 14:21:38,340 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 14:21:38,342 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 14:21:38,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:21:36" (1/4) ... [2024-06-14 14:21:38,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1726a151 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 02:21:38, skipping insertion in model container [2024-06-14 14:21:38,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 02:21:37" (2/4) ... [2024-06-14 14:21:38,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1726a151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:21:38, skipping insertion in model container [2024-06-14 14:21:38,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:37" (3/4) ... [2024-06-14 14:21:38,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1726a151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:21:38, skipping insertion in model container [2024-06-14 14:21:38,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:21:38" (4/4) ... [2024-06-14 14:21:38,345 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-5.i [2024-06-14 14:21:38,358 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 14:21:38,359 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 14:21:38,359 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 14:21:38,385 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 14:21:38,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 66 flow [2024-06-14 14:21:38,426 INFO L124 PetriNetUnfolderBase]: 3/27 cut-off events. [2024-06-14 14:21:38,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 14:21:38,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 3/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-06-14 14:21:38,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 66 flow [2024-06-14 14:21:38,448 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 60 flow [2024-06-14 14:21:38,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 14:21:38,466 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;@22259d7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 14:21:38,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 14:21:38,473 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 14:21:38,475 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-06-14 14:21:38,475 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 14:21:38,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:38,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:38,477 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)] === [2024-06-14 14:21:38,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:38,483 INFO L85 PathProgramCache]: Analyzing trace with hash 259354094, now seen corresponding path program 1 times [2024-06-14 14:21:38,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:38,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621744969] [2024-06-14 14:21:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:38,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:39,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:39,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621744969] [2024-06-14 14:21:39,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621744969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:39,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:39,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 14:21:39,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410337826] [2024-06-14 14:21:39,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:39,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 14:21:39,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:39,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 14:21:39,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 14:21:39,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:39,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:39,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:39,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:39,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:39,215 INFO L124 PetriNetUnfolderBase]: 322/536 cut-off events. [2024-06-14 14:21:39,215 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-14 14:21:39,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 536 events. 322/536 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2114 event pairs, 53 based on Foata normal form. 21/506 useless extension candidates. Maximal degree in co-relation 1034. Up to 295 conditions per place. [2024-06-14 14:21:39,235 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 34 selfloop transitions, 8 changer transitions 12/56 dead transitions. [2024-06-14 14:21:39,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 56 transitions, 227 flow [2024-06-14 14:21:39,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:21:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:21:39,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-14 14:21:39,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-06-14 14:21:39,248 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 60 flow. Second operand 5 states and 85 transitions. [2024-06-14 14:21:39,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 56 transitions, 227 flow [2024-06-14 14:21:39,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 56 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 14:21:39,254 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 103 flow [2024-06-14 14:21:39,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-06-14 14:21:39,260 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-06-14 14:21:39,260 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 103 flow [2024-06-14 14:21:39,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:39,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:39,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:39,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 14:21:39,261 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)] === [2024-06-14 14:21:39,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:39,261 INFO L85 PathProgramCache]: Analyzing trace with hash -227696702, now seen corresponding path program 1 times [2024-06-14 14:21:39,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:39,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320265228] [2024-06-14 14:21:39,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:39,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:39,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:39,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320265228] [2024-06-14 14:21:39,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320265228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:39,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:39,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:21:39,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516728480] [2024-06-14 14:21:39,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:39,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:21:39,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:39,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:21:39,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:21:39,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:39,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 103 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:39,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:39,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:39,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:39,736 INFO L124 PetriNetUnfolderBase]: 160/298 cut-off events. [2024-06-14 14:21:39,736 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-06-14 14:21:39,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 298 events. 160/298 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1094 event pairs, 13 based on Foata normal form. 10/308 useless extension candidates. Maximal degree in co-relation 762. Up to 115 conditions per place. [2024-06-14 14:21:39,739 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 42 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2024-06-14 14:21:39,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 56 transitions, 291 flow [2024-06-14 14:21:39,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:21:39,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:21:39,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-14 14:21:39,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45320197044334976 [2024-06-14 14:21:39,741 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 103 flow. Second operand 7 states and 92 transitions. [2024-06-14 14:21:39,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 56 transitions, 291 flow [2024-06-14 14:21:39,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 291 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-14 14:21:39,743 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 162 flow [2024-06-14 14:21:39,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-14 14:21:39,744 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-14 14:21:39,744 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 162 flow [2024-06-14 14:21:39,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:39,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:39,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:39,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 14:21:39,745 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)] === [2024-06-14 14:21:39,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:39,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1531337612, now seen corresponding path program 1 times [2024-06-14 14:21:39,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:39,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708852999] [2024-06-14 14:21:39,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:39,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:39,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:39,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:39,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708852999] [2024-06-14 14:21:39,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708852999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:39,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:39,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:21:39,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556770536] [2024-06-14 14:21:39,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:39,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:21:39,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:39,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:21:39,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:21:39,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:39,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 162 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:39,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:40,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:40,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:40,111 INFO L124 PetriNetUnfolderBase]: 145/273 cut-off events. [2024-06-14 14:21:40,111 INFO L125 PetriNetUnfolderBase]: For 304/308 co-relation queries the response was YES. [2024-06-14 14:21:40,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 273 events. 145/273 cut-off events. For 304/308 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 967 event pairs, 4 based on Foata normal form. 13/286 useless extension candidates. Maximal degree in co-relation 859. Up to 115 conditions per place. [2024-06-14 14:21:40,113 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 44 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2024-06-14 14:21:40,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 366 flow [2024-06-14 14:21:40,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:21:40,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:21:40,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-14 14:21:40,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267241379310345 [2024-06-14 14:21:40,115 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 162 flow. Second operand 8 states and 99 transitions. [2024-06-14 14:21:40,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 366 flow [2024-06-14 14:21:40,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 59 transitions, 346 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-14 14:21:40,118 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 174 flow [2024-06-14 14:21:40,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=174, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2024-06-14 14:21:40,119 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-14 14:21:40,119 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 174 flow [2024-06-14 14:21:40,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:40,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:40,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:40,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 14:21:40,120 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)] === [2024-06-14 14:21:40,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:40,121 INFO L85 PathProgramCache]: Analyzing trace with hash 58741636, now seen corresponding path program 1 times [2024-06-14 14:21:40,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:40,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454704095] [2024-06-14 14:21:40,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:40,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:40,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:40,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454704095] [2024-06-14 14:21:40,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454704095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:40,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:40,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:21:40,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27608064] [2024-06-14 14:21:40,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:40,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:21:40,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:40,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:21:40,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:21:40,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:40,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:40,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:40,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:40,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:40,444 INFO L124 PetriNetUnfolderBase]: 169/315 cut-off events. [2024-06-14 14:21:40,445 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-06-14 14:21:40,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1087 conditions, 315 events. 169/315 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1131 event pairs, 37 based on Foata normal form. 3/317 useless extension candidates. Maximal degree in co-relation 1054. Up to 179 conditions per place. [2024-06-14 14:21:40,447 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 36 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-14 14:21:40,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 348 flow [2024-06-14 14:21:40,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:21:40,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:21:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-14 14:21:40,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3842364532019704 [2024-06-14 14:21:40,448 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 174 flow. Second operand 7 states and 78 transitions. [2024-06-14 14:21:40,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 348 flow [2024-06-14 14:21:40,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 320 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-14 14:21:40,450 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 205 flow [2024-06-14 14:21:40,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=205, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2024-06-14 14:21:40,451 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-06-14 14:21:40,451 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 205 flow [2024-06-14 14:21:40,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:40,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:40,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:40,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 14:21:40,452 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)] === [2024-06-14 14:21:40,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:40,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1820991533, now seen corresponding path program 1 times [2024-06-14 14:21:40,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:40,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597147215] [2024-06-14 14:21:40,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:40,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:40,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:40,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:40,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597147215] [2024-06-14 14:21:40,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597147215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:40,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:40,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:21:40,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850167556] [2024-06-14 14:21:40,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:40,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:21:40,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:40,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:21:40,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:21:40,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:40,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 205 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:40,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:40,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:40,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:40,785 INFO L124 PetriNetUnfolderBase]: 151/289 cut-off events. [2024-06-14 14:21:40,785 INFO L125 PetriNetUnfolderBase]: For 507/507 co-relation queries the response was YES. [2024-06-14 14:21:40,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 289 events. 151/289 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 996 event pairs, 31 based on Foata normal form. 9/297 useless extension candidates. Maximal degree in co-relation 991. Up to 176 conditions per place. [2024-06-14 14:21:40,787 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 33 selfloop transitions, 11 changer transitions 2/48 dead transitions. [2024-06-14 14:21:40,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 349 flow [2024-06-14 14:21:40,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:21:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:21:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-14 14:21:40,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35344827586206895 [2024-06-14 14:21:40,788 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 205 flow. Second operand 8 states and 82 transitions. [2024-06-14 14:21:40,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 349 flow [2024-06-14 14:21:40,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 14:21:40,791 INFO L231 Difference]: Finished difference. Result has 52 places, 34 transitions, 218 flow [2024-06-14 14:21:40,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=218, PETRI_PLACES=52, PETRI_TRANSITIONS=34} [2024-06-14 14:21:40,791 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2024-06-14 14:21:40,791 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 34 transitions, 218 flow [2024-06-14 14:21:40,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:40,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:40,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:40,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 14:21:40,792 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)] === [2024-06-14 14:21:40,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:40,793 INFO L85 PathProgramCache]: Analyzing trace with hash -124043924, now seen corresponding path program 1 times [2024-06-14 14:21:40,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:40,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253301357] [2024-06-14 14:21:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:40,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:41,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:41,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253301357] [2024-06-14 14:21:41,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253301357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:41,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:41,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:21:41,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329723456] [2024-06-14 14:21:41,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:41,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:21:41,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:41,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:21:41,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:21:41,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:41,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 34 transitions, 218 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:41,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:41,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:41,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:41,115 INFO L124 PetriNetUnfolderBase]: 157/300 cut-off events. [2024-06-14 14:21:41,116 INFO L125 PetriNetUnfolderBase]: For 637/641 co-relation queries the response was YES. [2024-06-14 14:21:41,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 300 events. 157/300 cut-off events. For 637/641 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1062 event pairs, 31 based on Foata normal form. 5/305 useless extension candidates. Maximal degree in co-relation 1054. Up to 168 conditions per place. [2024-06-14 14:21:41,118 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 39 selfloop transitions, 17 changer transitions 1/59 dead transitions. [2024-06-14 14:21:41,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 421 flow [2024-06-14 14:21:41,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:21:41,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:21:41,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 14:21:41,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37547892720306514 [2024-06-14 14:21:41,119 INFO L175 Difference]: Start difference. First operand has 52 places, 34 transitions, 218 flow. Second operand 9 states and 98 transitions. [2024-06-14 14:21:41,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 421 flow [2024-06-14 14:21:41,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 393 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 14:21:41,122 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 266 flow [2024-06-14 14:21:41,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=266, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2024-06-14 14:21:41,123 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-14 14:21:41,123 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 266 flow [2024-06-14 14:21:41,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:41,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:41,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:41,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 14:21:41,124 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:41,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:41,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1747540272, now seen corresponding path program 2 times [2024-06-14 14:21:41,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:41,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078615076] [2024-06-14 14:21:41,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:41,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:41,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:41,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:41,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078615076] [2024-06-14 14:21:41,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078615076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:41,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:41,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:21:41,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078051213] [2024-06-14 14:21:41,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:41,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:21:41,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:41,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:21:41,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:21:41,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:41,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 266 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:41,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:41,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:41,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:41,456 INFO L124 PetriNetUnfolderBase]: 166/314 cut-off events. [2024-06-14 14:21:41,456 INFO L125 PetriNetUnfolderBase]: For 782/782 co-relation queries the response was YES. [2024-06-14 14:21:41,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 314 events. 166/314 cut-off events. For 782/782 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1125 event pairs, 34 based on Foata normal form. 3/316 useless extension candidates. Maximal degree in co-relation 1196. Up to 192 conditions per place. [2024-06-14 14:21:41,458 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 39 selfloop transitions, 17 changer transitions 1/59 dead transitions. [2024-06-14 14:21:41,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 484 flow [2024-06-14 14:21:41,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:21:41,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:21:41,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-14 14:21:41,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3524904214559387 [2024-06-14 14:21:41,459 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 266 flow. Second operand 9 states and 92 transitions. [2024-06-14 14:21:41,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 484 flow [2024-06-14 14:21:41,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 443 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 14:21:41,462 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 344 flow [2024-06-14 14:21:41,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=344, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2024-06-14 14:21:41,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2024-06-14 14:21:41,463 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 344 flow [2024-06-14 14:21:41,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:41,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:41,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:41,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 14:21:41,464 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:41,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:41,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1553674328, now seen corresponding path program 3 times [2024-06-14 14:21:41,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:41,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368483811] [2024-06-14 14:21:41,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:41,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:41,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:41,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368483811] [2024-06-14 14:21:41,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368483811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:41,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:41,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:21:41,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238515168] [2024-06-14 14:21:41,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:41,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:21:41,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:41,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:21:41,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:21:41,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:41,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 344 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:41,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:41,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:41,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:41,790 INFO L124 PetriNetUnfolderBase]: 172/327 cut-off events. [2024-06-14 14:21:41,790 INFO L125 PetriNetUnfolderBase]: For 940/940 co-relation queries the response was YES. [2024-06-14 14:21:41,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 327 events. 172/327 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1195 event pairs, 31 based on Foata normal form. 1/328 useless extension candidates. Maximal degree in co-relation 1325. Up to 199 conditions per place. [2024-06-14 14:21:41,792 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 45 selfloop transitions, 19 changer transitions 1/67 dead transitions. [2024-06-14 14:21:41,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 67 transitions, 564 flow [2024-06-14 14:21:41,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:21:41,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:21:41,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-14 14:21:41,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36015325670498083 [2024-06-14 14:21:41,794 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 344 flow. Second operand 9 states and 94 transitions. [2024-06-14 14:21:41,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 67 transitions, 564 flow [2024-06-14 14:21:41,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 67 transitions, 537 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 14:21:41,797 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 417 flow [2024-06-14 14:21:41,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=417, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2024-06-14 14:21:41,798 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-06-14 14:21:41,798 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 417 flow [2024-06-14 14:21:41,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:41,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:41,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:41,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 14:21:41,799 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)] === [2024-06-14 14:21:41,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:41,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1748134918, now seen corresponding path program 4 times [2024-06-14 14:21:41,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:41,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559990054] [2024-06-14 14:21:41,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:41,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:41,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:41,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559990054] [2024-06-14 14:21:41,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559990054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:41,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:41,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:21:41,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699287115] [2024-06-14 14:21:41,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:41,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:21:41,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:41,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:21:41,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:21:42,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:42,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 417 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:42,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:42,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:42,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:42,136 INFO L124 PetriNetUnfolderBase]: 178/339 cut-off events. [2024-06-14 14:21:42,136 INFO L125 PetriNetUnfolderBase]: For 1234/1238 co-relation queries the response was YES. [2024-06-14 14:21:42,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 339 events. 178/339 cut-off events. For 1234/1238 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1280 event pairs, 29 based on Foata normal form. 7/346 useless extension candidates. Maximal degree in co-relation 1464. Up to 209 conditions per place. [2024-06-14 14:21:42,139 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 49 selfloop transitions, 19 changer transitions 1/71 dead transitions. [2024-06-14 14:21:42,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 71 transitions, 649 flow [2024-06-14 14:21:42,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:21:42,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:21:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 14:21:42,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36398467432950193 [2024-06-14 14:21:42,140 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 417 flow. Second operand 9 states and 95 transitions. [2024-06-14 14:21:42,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 71 transitions, 649 flow [2024-06-14 14:21:42,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 607 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 14:21:42,144 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 471 flow [2024-06-14 14:21:42,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=471, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2024-06-14 14:21:42,145 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-14 14:21:42,145 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 471 flow [2024-06-14 14:21:42,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:42,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:42,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:42,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 14:21:42,145 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)] === [2024-06-14 14:21:42,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:42,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1742778672, now seen corresponding path program 5 times [2024-06-14 14:21:42,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:42,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622038880] [2024-06-14 14:21:42,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:42,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:42,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:42,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622038880] [2024-06-14 14:21:42,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622038880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:42,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:42,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:21:42,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718289182] [2024-06-14 14:21:42,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:42,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:21:42,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:42,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:21:42,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:21:42,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:42,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 471 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:42,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:42,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:42,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:42,460 INFO L124 PetriNetUnfolderBase]: 181/340 cut-off events. [2024-06-14 14:21:42,461 INFO L125 PetriNetUnfolderBase]: For 1490/1490 co-relation queries the response was YES. [2024-06-14 14:21:42,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1616 conditions, 340 events. 181/340 cut-off events. For 1490/1490 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1269 event pairs, 32 based on Foata normal form. 1/340 useless extension candidates. Maximal degree in co-relation 1567. Up to 211 conditions per place. [2024-06-14 14:21:42,463 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 48 selfloop transitions, 20 changer transitions 1/71 dead transitions. [2024-06-14 14:21:42,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 689 flow [2024-06-14 14:21:42,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:21:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:21:42,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-14 14:21:42,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3486590038314176 [2024-06-14 14:21:42,464 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 471 flow. Second operand 9 states and 91 transitions. [2024-06-14 14:21:42,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 689 flow [2024-06-14 14:21:42,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 71 transitions, 649 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 14:21:42,469 INFO L231 Difference]: Finished difference. Result has 77 places, 58 transitions, 519 flow [2024-06-14 14:21:42,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=519, PETRI_PLACES=77, PETRI_TRANSITIONS=58} [2024-06-14 14:21:42,469 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-14 14:21:42,470 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 58 transitions, 519 flow [2024-06-14 14:21:42,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:42,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:42,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:42,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 14:21:42,470 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)] === [2024-06-14 14:21:42,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:42,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1920923892, now seen corresponding path program 6 times [2024-06-14 14:21:42,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:42,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054974820] [2024-06-14 14:21:42,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:42,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:42,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:42,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:42,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054974820] [2024-06-14 14:21:42,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054974820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:42,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:42,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:21:42,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712411841] [2024-06-14 14:21:42,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:42,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:21:42,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:42,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:21:42,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:21:42,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:42,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 58 transitions, 519 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:42,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:42,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:42,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:42,797 INFO L124 PetriNetUnfolderBase]: 181/340 cut-off events. [2024-06-14 14:21:42,797 INFO L125 PetriNetUnfolderBase]: For 1718/1718 co-relation queries the response was YES. [2024-06-14 14:21:42,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1673 conditions, 340 events. 181/340 cut-off events. For 1718/1718 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1273 event pairs, 35 based on Foata normal form. 3/342 useless extension candidates. Maximal degree in co-relation 1621. Up to 219 conditions per place. [2024-06-14 14:21:42,800 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 50 selfloop transitions, 22 changer transitions 1/75 dead transitions. [2024-06-14 14:21:42,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 75 transitions, 757 flow [2024-06-14 14:21:42,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:21:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:21:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-14 14:21:42,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3563218390804598 [2024-06-14 14:21:42,801 INFO L175 Difference]: Start difference. First operand has 77 places, 58 transitions, 519 flow. Second operand 9 states and 93 transitions. [2024-06-14 14:21:42,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 75 transitions, 757 flow [2024-06-14 14:21:42,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 701 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 14:21:42,806 INFO L231 Difference]: Finished difference. Result has 82 places, 62 transitions, 578 flow [2024-06-14 14:21:42,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=578, PETRI_PLACES=82, PETRI_TRANSITIONS=62} [2024-06-14 14:21:42,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-14 14:21:42,807 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 62 transitions, 578 flow [2024-06-14 14:21:42,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:42,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:42,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:42,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 14:21:42,808 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)] === [2024-06-14 14:21:42,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:42,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1820825740, now seen corresponding path program 1 times [2024-06-14 14:21:42,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:42,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098889041] [2024-06-14 14:21:42,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:42,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:43,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:43,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:43,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098889041] [2024-06-14 14:21:43,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098889041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:43,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:43,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:43,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340823595] [2024-06-14 14:21:43,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:43,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:43,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:43,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:43,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:43,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 62 transitions, 578 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:43,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:43,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:43,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:43,206 INFO L124 PetriNetUnfolderBase]: 199/376 cut-off events. [2024-06-14 14:21:43,206 INFO L125 PetriNetUnfolderBase]: For 2368/2372 co-relation queries the response was YES. [2024-06-14 14:21:43,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1947 conditions, 376 events. 199/376 cut-off events. For 2368/2372 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1475 event pairs, 11 based on Foata normal form. 7/383 useless extension candidates. Maximal degree in co-relation 1892. Up to 157 conditions per place. [2024-06-14 14:21:43,209 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 64 selfloop transitions, 26 changer transitions 1/93 dead transitions. [2024-06-14 14:21:43,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 93 transitions, 954 flow [2024-06-14 14:21:43,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:43,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:43,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 14:21:43,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38620689655172413 [2024-06-14 14:21:43,210 INFO L175 Difference]: Start difference. First operand has 82 places, 62 transitions, 578 flow. Second operand 10 states and 112 transitions. [2024-06-14 14:21:43,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 93 transitions, 954 flow [2024-06-14 14:21:43,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 93 transitions, 871 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:43,217 INFO L231 Difference]: Finished difference. Result has 84 places, 64 transitions, 579 flow [2024-06-14 14:21:43,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=579, PETRI_PLACES=84, PETRI_TRANSITIONS=64} [2024-06-14 14:21:43,217 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-14 14:21:43,218 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 64 transitions, 579 flow [2024-06-14 14:21:43,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:43,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:43,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:43,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 14:21:43,218 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)] === [2024-06-14 14:21:43,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:43,219 INFO L85 PathProgramCache]: Analyzing trace with hash -986004792, now seen corresponding path program 2 times [2024-06-14 14:21:43,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:43,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119273322] [2024-06-14 14:21:43,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:43,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:43,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:43,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:43,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119273322] [2024-06-14 14:21:43,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119273322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:43,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:43,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:43,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357997801] [2024-06-14 14:21:43,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:43,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:43,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:43,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:43,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:43,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:43,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 64 transitions, 579 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:43,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:43,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:43,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:43,595 INFO L124 PetriNetUnfolderBase]: 217/410 cut-off events. [2024-06-14 14:21:43,595 INFO L125 PetriNetUnfolderBase]: For 2951/2955 co-relation queries the response was YES. [2024-06-14 14:21:43,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2171 conditions, 410 events. 217/410 cut-off events. For 2951/2955 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1684 event pairs, 30 based on Foata normal form. 7/417 useless extension candidates. Maximal degree in co-relation 2117. Up to 238 conditions per place. [2024-06-14 14:21:43,598 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 64 selfloop transitions, 25 changer transitions 1/92 dead transitions. [2024-06-14 14:21:43,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 923 flow [2024-06-14 14:21:43,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:43,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 14:21:43,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-14 14:21:43,599 INFO L175 Difference]: Start difference. First operand has 84 places, 64 transitions, 579 flow. Second operand 10 states and 110 transitions. [2024-06-14 14:21:43,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 923 flow [2024-06-14 14:21:43,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 92 transitions, 856 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 14:21:43,606 INFO L231 Difference]: Finished difference. Result has 86 places, 66 transitions, 602 flow [2024-06-14 14:21:43,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=602, PETRI_PLACES=86, PETRI_TRANSITIONS=66} [2024-06-14 14:21:43,607 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-14 14:21:43,607 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 66 transitions, 602 flow [2024-06-14 14:21:43,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:43,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:43,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:43,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 14:21:43,607 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)] === [2024-06-14 14:21:43,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:43,608 INFO L85 PathProgramCache]: Analyzing trace with hash -985943412, now seen corresponding path program 3 times [2024-06-14 14:21:43,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:43,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446146870] [2024-06-14 14:21:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:43,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:43,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:43,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446146870] [2024-06-14 14:21:43,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446146870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:43,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:43,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:43,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541217851] [2024-06-14 14:21:43,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:43,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:43,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:43,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:43,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:43,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:43,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 66 transitions, 602 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:43,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:43,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:43,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:44,005 INFO L124 PetriNetUnfolderBase]: 226/425 cut-off events. [2024-06-14 14:21:44,005 INFO L125 PetriNetUnfolderBase]: For 3312/3316 co-relation queries the response was YES. [2024-06-14 14:21:44,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2288 conditions, 425 events. 226/425 cut-off events. For 3312/3316 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1747 event pairs, 38 based on Foata normal form. 7/432 useless extension candidates. Maximal degree in co-relation 2234. Up to 265 conditions per place. [2024-06-14 14:21:44,008 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 61 selfloop transitions, 26 changer transitions 1/90 dead transitions. [2024-06-14 14:21:44,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 899 flow [2024-06-14 14:21:44,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:44,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:44,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 14:21:44,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724137931034483 [2024-06-14 14:21:44,010 INFO L175 Difference]: Start difference. First operand has 86 places, 66 transitions, 602 flow. Second operand 10 states and 108 transitions. [2024-06-14 14:21:44,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 899 flow [2024-06-14 14:21:44,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 90 transitions, 851 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 14:21:44,017 INFO L231 Difference]: Finished difference. Result has 89 places, 67 transitions, 633 flow [2024-06-14 14:21:44,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=633, PETRI_PLACES=89, PETRI_TRANSITIONS=67} [2024-06-14 14:21:44,018 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-14 14:21:44,018 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 67 transitions, 633 flow [2024-06-14 14:21:44,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:44,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:44,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:44,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 14:21:44,019 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)] === [2024-06-14 14:21:44,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:44,019 INFO L85 PathProgramCache]: Analyzing trace with hash -985943257, now seen corresponding path program 1 times [2024-06-14 14:21:44,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:44,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481818073] [2024-06-14 14:21:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:44,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:44,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:44,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481818073] [2024-06-14 14:21:44,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481818073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:44,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:44,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:44,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995486520] [2024-06-14 14:21:44,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:44,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:44,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:44,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:44,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:44,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:44,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 67 transitions, 633 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:44,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:44,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:44,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:44,418 INFO L124 PetriNetUnfolderBase]: 235/444 cut-off events. [2024-06-14 14:21:44,419 INFO L125 PetriNetUnfolderBase]: For 3834/3838 co-relation queries the response was YES. [2024-06-14 14:21:44,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2404 conditions, 444 events. 235/444 cut-off events. For 3834/3838 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1876 event pairs, 34 based on Foata normal form. 7/451 useless extension candidates. Maximal degree in co-relation 2349. Up to 280 conditions per place. [2024-06-14 14:21:44,422 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 62 selfloop transitions, 26 changer transitions 1/91 dead transitions. [2024-06-14 14:21:44,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 911 flow [2024-06-14 14:21:44,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:44,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 14:21:44,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724137931034483 [2024-06-14 14:21:44,423 INFO L175 Difference]: Start difference. First operand has 89 places, 67 transitions, 633 flow. Second operand 10 states and 108 transitions. [2024-06-14 14:21:44,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 911 flow [2024-06-14 14:21:44,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 857 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:44,434 INFO L231 Difference]: Finished difference. Result has 91 places, 68 transitions, 653 flow [2024-06-14 14:21:44,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=653, PETRI_PLACES=91, PETRI_TRANSITIONS=68} [2024-06-14 14:21:44,435 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-14 14:21:44,436 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 68 transitions, 653 flow [2024-06-14 14:21:44,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:44,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:44,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:44,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 14:21:44,437 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)] === [2024-06-14 14:21:44,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:44,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1648791833, now seen corresponding path program 2 times [2024-06-14 14:21:44,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:44,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848566482] [2024-06-14 14:21:44,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:44,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:44,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:44,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848566482] [2024-06-14 14:21:44,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848566482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:44,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:44,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:44,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132814528] [2024-06-14 14:21:44,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:44,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:44,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:44,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:44,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:44,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:44,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 68 transitions, 653 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:44,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:44,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:44,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:44,810 INFO L124 PetriNetUnfolderBase]: 244/459 cut-off events. [2024-06-14 14:21:44,810 INFO L125 PetriNetUnfolderBase]: For 4098/4098 co-relation queries the response was YES. [2024-06-14 14:21:44,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2532 conditions, 459 events. 244/459 cut-off events. For 4098/4098 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1945 event pairs, 38 based on Foata normal form. 3/462 useless extension candidates. Maximal degree in co-relation 2476. Up to 310 conditions per place. [2024-06-14 14:21:44,814 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 65 selfloop transitions, 21 changer transitions 1/89 dead transitions. [2024-06-14 14:21:44,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 89 transitions, 921 flow [2024-06-14 14:21:44,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:44,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 14:21:44,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586206896551724 [2024-06-14 14:21:44,815 INFO L175 Difference]: Start difference. First operand has 91 places, 68 transitions, 653 flow. Second operand 10 states and 104 transitions. [2024-06-14 14:21:44,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 89 transitions, 921 flow [2024-06-14 14:21:44,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 859 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:44,826 INFO L231 Difference]: Finished difference. Result has 93 places, 69 transitions, 657 flow [2024-06-14 14:21:44,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=657, PETRI_PLACES=93, PETRI_TRANSITIONS=69} [2024-06-14 14:21:44,827 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-14 14:21:44,827 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 69 transitions, 657 flow [2024-06-14 14:21:44,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:44,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:44,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:44,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 14:21:44,828 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)] === [2024-06-14 14:21:44,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:44,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1648795708, now seen corresponding path program 4 times [2024-06-14 14:21:44,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:44,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097397194] [2024-06-14 14:21:44,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:44,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:45,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:45,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:45,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097397194] [2024-06-14 14:21:45,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097397194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:45,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:45,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:45,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039824832] [2024-06-14 14:21:45,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:45,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:45,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:45,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:45,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:45,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:45,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 69 transitions, 657 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:45,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:45,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:45,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:45,229 INFO L124 PetriNetUnfolderBase]: 262/491 cut-off events. [2024-06-14 14:21:45,229 INFO L125 PetriNetUnfolderBase]: For 4948/4952 co-relation queries the response was YES. [2024-06-14 14:21:45,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2755 conditions, 491 events. 262/491 cut-off events. For 4948/4952 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2134 event pairs, 32 based on Foata normal form. 7/498 useless extension candidates. Maximal degree in co-relation 2698. Up to 328 conditions per place. [2024-06-14 14:21:45,232 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 71 selfloop transitions, 20 changer transitions 1/94 dead transitions. [2024-06-14 14:21:45,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 94 transitions, 1009 flow [2024-06-14 14:21:45,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:45,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 14:21:45,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36551724137931035 [2024-06-14 14:21:45,233 INFO L175 Difference]: Start difference. First operand has 93 places, 69 transitions, 657 flow. Second operand 10 states and 106 transitions. [2024-06-14 14:21:45,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 94 transitions, 1009 flow [2024-06-14 14:21:45,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 955 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:45,242 INFO L231 Difference]: Finished difference. Result has 96 places, 71 transitions, 687 flow [2024-06-14 14:21:45,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=687, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2024-06-14 14:21:45,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-14 14:21:45,243 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 687 flow [2024-06-14 14:21:45,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:45,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:45,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:45,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 14:21:45,244 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)] === [2024-06-14 14:21:45,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:45,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1790001328, now seen corresponding path program 5 times [2024-06-14 14:21:45,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:45,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624515130] [2024-06-14 14:21:45,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:45,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:45,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:45,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624515130] [2024-06-14 14:21:45,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624515130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:45,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:45,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:45,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593692252] [2024-06-14 14:21:45,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:45,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:45,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:45,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:45,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:45,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:45,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 687 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:45,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:45,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:45,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:45,623 INFO L124 PetriNetUnfolderBase]: 271/508 cut-off events. [2024-06-14 14:21:45,623 INFO L125 PetriNetUnfolderBase]: For 5670/5674 co-relation queries the response was YES. [2024-06-14 14:21:45,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2894 conditions, 508 events. 271/508 cut-off events. For 5670/5674 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2255 event pairs, 36 based on Foata normal form. 7/515 useless extension candidates. Maximal degree in co-relation 2835. Up to 355 conditions per place. [2024-06-14 14:21:45,627 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 68 selfloop transitions, 21 changer transitions 1/92 dead transitions. [2024-06-14 14:21:45,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 92 transitions, 988 flow [2024-06-14 14:21:45,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:45,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 14:21:45,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586206896551724 [2024-06-14 14:21:45,629 INFO L175 Difference]: Start difference. First operand has 96 places, 71 transitions, 687 flow. Second operand 10 states and 104 transitions. [2024-06-14 14:21:45,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 92 transitions, 988 flow [2024-06-14 14:21:45,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 92 transitions, 944 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 14:21:45,637 INFO L231 Difference]: Finished difference. Result has 99 places, 72 transitions, 716 flow [2024-06-14 14:21:45,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=716, PETRI_PLACES=99, PETRI_TRANSITIONS=72} [2024-06-14 14:21:45,638 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-14 14:21:45,638 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 72 transitions, 716 flow [2024-06-14 14:21:45,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:45,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:45,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:45,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 14:21:45,639 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)] === [2024-06-14 14:21:45,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:45,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1642155353, now seen corresponding path program 3 times [2024-06-14 14:21:45,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:45,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966017507] [2024-06-14 14:21:45,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:45,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:45,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:45,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:45,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966017507] [2024-06-14 14:21:45,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966017507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:45,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:45,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:45,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954662042] [2024-06-14 14:21:45,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:45,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:45,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:45,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:45,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:45,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:45,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 72 transitions, 716 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:45,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:45,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:45,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:46,029 INFO L124 PetriNetUnfolderBase]: 289/542 cut-off events. [2024-06-14 14:21:46,030 INFO L125 PetriNetUnfolderBase]: For 6153/6157 co-relation queries the response was YES. [2024-06-14 14:21:46,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3070 conditions, 542 events. 289/542 cut-off events. For 6153/6157 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2459 event pairs, 38 based on Foata normal form. 13/555 useless extension candidates. Maximal degree in co-relation 3010. Up to 378 conditions per place. [2024-06-14 14:21:46,034 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 75 selfloop transitions, 19 changer transitions 1/97 dead transitions. [2024-06-14 14:21:46,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 97 transitions, 1029 flow [2024-06-14 14:21:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:46,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:46,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 14:21:46,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3689655172413793 [2024-06-14 14:21:46,036 INFO L175 Difference]: Start difference. First operand has 99 places, 72 transitions, 716 flow. Second operand 10 states and 107 transitions. [2024-06-14 14:21:46,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 97 transitions, 1029 flow [2024-06-14 14:21:46,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 97 transitions, 979 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:46,047 INFO L231 Difference]: Finished difference. Result has 102 places, 74 transitions, 743 flow [2024-06-14 14:21:46,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=743, PETRI_PLACES=102, PETRI_TRANSITIONS=74} [2024-06-14 14:21:46,047 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-14 14:21:46,047 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 74 transitions, 743 flow [2024-06-14 14:21:46,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:46,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:46,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:46,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 14:21:46,048 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)] === [2024-06-14 14:21:46,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:46,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1642391728, now seen corresponding path program 6 times [2024-06-14 14:21:46,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:46,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005887899] [2024-06-14 14:21:46,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:46,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:46,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:46,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:46,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005887899] [2024-06-14 14:21:46,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005887899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:46,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:46,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:46,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549880826] [2024-06-14 14:21:46,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:46,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:46,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:46,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:46,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:46,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:46,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 74 transitions, 743 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:46,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:46,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:46,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:46,439 INFO L124 PetriNetUnfolderBase]: 298/559 cut-off events. [2024-06-14 14:21:46,440 INFO L125 PetriNetUnfolderBase]: For 7239/7243 co-relation queries the response was YES. [2024-06-14 14:21:46,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3290 conditions, 559 events. 298/559 cut-off events. For 7239/7243 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2580 event pairs, 38 based on Foata normal form. 7/566 useless extension candidates. Maximal degree in co-relation 3228. Up to 394 conditions per place. [2024-06-14 14:21:46,444 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 71 selfloop transitions, 21 changer transitions 1/95 dead transitions. [2024-06-14 14:21:46,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 95 transitions, 1058 flow [2024-06-14 14:21:46,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:46,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:46,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 14:21:46,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586206896551724 [2024-06-14 14:21:46,445 INFO L175 Difference]: Start difference. First operand has 102 places, 74 transitions, 743 flow. Second operand 10 states and 104 transitions. [2024-06-14 14:21:46,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 95 transitions, 1058 flow [2024-06-14 14:21:46,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 95 transitions, 1015 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 14:21:46,458 INFO L231 Difference]: Finished difference. Result has 106 places, 75 transitions, 775 flow [2024-06-14 14:21:46,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=775, PETRI_PLACES=106, PETRI_TRANSITIONS=75} [2024-06-14 14:21:46,458 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-14 14:21:46,458 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 75 transitions, 775 flow [2024-06-14 14:21:46,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:46,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:46,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:46,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 14:21:46,459 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)] === [2024-06-14 14:21:46,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:46,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1642391573, now seen corresponding path program 4 times [2024-06-14 14:21:46,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:46,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686373997] [2024-06-14 14:21:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:46,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:46,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:46,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686373997] [2024-06-14 14:21:46,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686373997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:46,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:46,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:46,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150267493] [2024-06-14 14:21:46,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:46,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:46,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:46,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:46,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:46,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:46,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 75 transitions, 775 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:46,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:46,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:46,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:46,937 INFO L124 PetriNetUnfolderBase]: 307/574 cut-off events. [2024-06-14 14:21:46,937 INFO L125 PetriNetUnfolderBase]: For 7631/7631 co-relation queries the response was YES. [2024-06-14 14:21:46,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3389 conditions, 574 events. 307/574 cut-off events. For 7631/7631 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2657 event pairs, 36 based on Foata normal form. 3/577 useless extension candidates. Maximal degree in co-relation 3325. Up to 409 conditions per place. [2024-06-14 14:21:46,941 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 72 selfloop transitions, 21 changer transitions 1/96 dead transitions. [2024-06-14 14:21:46,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 96 transitions, 1063 flow [2024-06-14 14:21:46,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:46,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 14:21:46,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586206896551724 [2024-06-14 14:21:46,943 INFO L175 Difference]: Start difference. First operand has 106 places, 75 transitions, 775 flow. Second operand 10 states and 104 transitions. [2024-06-14 14:21:46,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 96 transitions, 1063 flow [2024-06-14 14:21:46,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 96 transitions, 1013 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:46,956 INFO L231 Difference]: Finished difference. Result has 108 places, 76 transitions, 795 flow [2024-06-14 14:21:46,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=795, PETRI_PLACES=108, PETRI_TRANSITIONS=76} [2024-06-14 14:21:46,957 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-14 14:21:46,957 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 76 transitions, 795 flow [2024-06-14 14:21:46,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:46,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:46,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:46,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 14:21:46,958 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)] === [2024-06-14 14:21:46,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:46,958 INFO L85 PathProgramCache]: Analyzing trace with hash -802309495, now seen corresponding path program 5 times [2024-06-14 14:21:46,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:46,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698332945] [2024-06-14 14:21:46,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:46,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:47,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:47,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:47,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698332945] [2024-06-14 14:21:47,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698332945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:47,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:47,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:47,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580915810] [2024-06-14 14:21:47,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:47,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:47,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:47,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:47,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:47,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:47,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 76 transitions, 795 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:47,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:47,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:47,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:47,380 INFO L124 PetriNetUnfolderBase]: 325/604 cut-off events. [2024-06-14 14:21:47,380 INFO L125 PetriNetUnfolderBase]: For 8521/8525 co-relation queries the response was YES. [2024-06-14 14:21:47,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3591 conditions, 604 events. 325/604 cut-off events. For 8521/8525 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2864 event pairs, 41 based on Foata normal form. 13/616 useless extension candidates. Maximal degree in co-relation 3526. Up to 429 conditions per place. [2024-06-14 14:21:47,387 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 75 selfloop transitions, 20 changer transitions 1/98 dead transitions. [2024-06-14 14:21:47,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 98 transitions, 1109 flow [2024-06-14 14:21:47,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:47,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:47,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 14:21:47,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586206896551724 [2024-06-14 14:21:47,388 INFO L175 Difference]: Start difference. First operand has 108 places, 76 transitions, 795 flow. Second operand 10 states and 104 transitions. [2024-06-14 14:21:47,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 98 transitions, 1109 flow [2024-06-14 14:21:47,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 98 transitions, 1049 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:47,401 INFO L231 Difference]: Finished difference. Result has 111 places, 78 transitions, 819 flow [2024-06-14 14:21:47,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=819, PETRI_PLACES=111, PETRI_TRANSITIONS=78} [2024-06-14 14:21:47,402 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-14 14:21:47,402 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 78 transitions, 819 flow [2024-06-14 14:21:47,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:47,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:47,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:47,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 14:21:47,403 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)] === [2024-06-14 14:21:47,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:47,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1660825599, now seen corresponding path program 6 times [2024-06-14 14:21:47,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:47,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981825297] [2024-06-14 14:21:47,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:47,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:47,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:47,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981825297] [2024-06-14 14:21:47,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981825297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:47,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:47,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:47,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896637878] [2024-06-14 14:21:47,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:47,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:47,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:47,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:47,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:47,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:47,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 78 transitions, 819 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:47,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:47,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:47,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:47,857 INFO L124 PetriNetUnfolderBase]: 334/621 cut-off events. [2024-06-14 14:21:47,858 INFO L125 PetriNetUnfolderBase]: For 9475/9479 co-relation queries the response was YES. [2024-06-14 14:21:47,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3754 conditions, 621 events. 334/621 cut-off events. For 9475/9479 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2960 event pairs, 41 based on Foata normal form. 7/627 useless extension candidates. Maximal degree in co-relation 3687. Up to 445 conditions per place. [2024-06-14 14:21:47,862 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 71 selfloop transitions, 22 changer transitions 1/96 dead transitions. [2024-06-14 14:21:47,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 96 transitions, 1105 flow [2024-06-14 14:21:47,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:47,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 14:21:47,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482758620689655 [2024-06-14 14:21:47,871 INFO L175 Difference]: Start difference. First operand has 111 places, 78 transitions, 819 flow. Second operand 10 states and 101 transitions. [2024-06-14 14:21:47,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 96 transitions, 1105 flow [2024-06-14 14:21:47,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 96 transitions, 1057 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 14:21:47,899 INFO L231 Difference]: Finished difference. Result has 115 places, 79 transitions, 847 flow [2024-06-14 14:21:47,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=847, PETRI_PLACES=115, PETRI_TRANSITIONS=79} [2024-06-14 14:21:47,899 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-14 14:21:47,899 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 79 transitions, 847 flow [2024-06-14 14:21:47,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:47,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:47,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:47,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 14:21:47,900 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)] === [2024-06-14 14:21:47,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:47,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1660825754, now seen corresponding path program 7 times [2024-06-14 14:21:47,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:47,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819925922] [2024-06-14 14:21:47,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:47,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:48,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:48,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819925922] [2024-06-14 14:21:48,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819925922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:48,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:48,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:48,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916171967] [2024-06-14 14:21:48,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:48,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:48,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:48,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:48,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:48,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:48,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 79 transitions, 847 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:48,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:48,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:48,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:48,407 INFO L124 PetriNetUnfolderBase]: 343/636 cut-off events. [2024-06-14 14:21:48,407 INFO L125 PetriNetUnfolderBase]: For 10506/10510 co-relation queries the response was YES. [2024-06-14 14:21:48,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3925 conditions, 636 events. 343/636 cut-off events. For 10506/10510 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3027 event pairs, 45 based on Foata normal form. 7/642 useless extension candidates. Maximal degree in co-relation 3856. Up to 460 conditions per place. [2024-06-14 14:21:48,411 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 72 selfloop transitions, 22 changer transitions 1/97 dead transitions. [2024-06-14 14:21:48,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 97 transitions, 1170 flow [2024-06-14 14:21:48,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:48,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:48,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 14:21:48,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482758620689655 [2024-06-14 14:21:48,413 INFO L175 Difference]: Start difference. First operand has 115 places, 79 transitions, 847 flow. Second operand 10 states and 101 transitions. [2024-06-14 14:21:48,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 97 transitions, 1170 flow [2024-06-14 14:21:48,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 97 transitions, 1106 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:48,427 INFO L231 Difference]: Finished difference. Result has 117 places, 80 transitions, 862 flow [2024-06-14 14:21:48,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=862, PETRI_PLACES=117, PETRI_TRANSITIONS=80} [2024-06-14 14:21:48,428 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-14 14:21:48,428 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 80 transitions, 862 flow [2024-06-14 14:21:48,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:48,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:48,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:48,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 14:21:48,428 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)] === [2024-06-14 14:21:48,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:48,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1808496734, now seen corresponding path program 8 times [2024-06-14 14:21:48,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:48,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045634639] [2024-06-14 14:21:48,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:48,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:48,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:48,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045634639] [2024-06-14 14:21:48,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045634639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:48,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:48,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:48,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140141315] [2024-06-14 14:21:48,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:48,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:48,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:48,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:48,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:48,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:48,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 80 transitions, 862 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:48,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:48,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:48,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:48,857 INFO L124 PetriNetUnfolderBase]: 352/653 cut-off events. [2024-06-14 14:21:48,857 INFO L125 PetriNetUnfolderBase]: For 11260/11260 co-relation queries the response was YES. [2024-06-14 14:21:48,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4055 conditions, 653 events. 352/653 cut-off events. For 11260/11260 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3156 event pairs, 41 based on Foata normal form. 3/655 useless extension candidates. Maximal degree in co-relation 3985. Up to 460 conditions per place. [2024-06-14 14:21:48,865 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 76 selfloop transitions, 22 changer transitions 1/101 dead transitions. [2024-06-14 14:21:48,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 101 transitions, 1245 flow [2024-06-14 14:21:48,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:48,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 14:21:48,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35517241379310344 [2024-06-14 14:21:48,866 INFO L175 Difference]: Start difference. First operand has 117 places, 80 transitions, 862 flow. Second operand 10 states and 103 transitions. [2024-06-14 14:21:48,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 101 transitions, 1245 flow [2024-06-14 14:21:48,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 101 transitions, 1191 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:48,884 INFO L231 Difference]: Finished difference. Result has 119 places, 81 transitions, 889 flow [2024-06-14 14:21:48,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=889, PETRI_PLACES=119, PETRI_TRANSITIONS=81} [2024-06-14 14:21:48,884 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-14 14:21:48,884 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 81 transitions, 889 flow [2024-06-14 14:21:48,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:48,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:48,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:48,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 14:21:48,885 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:48,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:48,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1808435199, now seen corresponding path program 7 times [2024-06-14 14:21:48,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:48,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566935927] [2024-06-14 14:21:48,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:48,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:49,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:49,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566935927] [2024-06-14 14:21:49,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566935927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:49,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:49,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:49,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822594149] [2024-06-14 14:21:49,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:49,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:49,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:49,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:49,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:49,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:49,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 81 transitions, 889 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:49,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:49,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:49,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:49,267 INFO L124 PetriNetUnfolderBase]: 361/668 cut-off events. [2024-06-14 14:21:49,267 INFO L125 PetriNetUnfolderBase]: For 11942/11946 co-relation queries the response was YES. [2024-06-14 14:21:49,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4173 conditions, 668 events. 361/668 cut-off events. For 11942/11946 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3221 event pairs, 43 based on Foata normal form. 7/674 useless extension candidates. Maximal degree in co-relation 4102. Up to 487 conditions per place. [2024-06-14 14:21:49,272 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 73 selfloop transitions, 23 changer transitions 1/99 dead transitions. [2024-06-14 14:21:49,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 99 transitions, 1183 flow [2024-06-14 14:21:49,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:49,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:49,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 14:21:49,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482758620689655 [2024-06-14 14:21:49,274 INFO L175 Difference]: Start difference. First operand has 119 places, 81 transitions, 889 flow. Second operand 10 states and 101 transitions. [2024-06-14 14:21:49,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 99 transitions, 1183 flow [2024-06-14 14:21:49,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 99 transitions, 1121 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 14:21:49,291 INFO L231 Difference]: Finished difference. Result has 120 places, 82 transitions, 907 flow [2024-06-14 14:21:49,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=907, PETRI_PLACES=120, PETRI_TRANSITIONS=82} [2024-06-14 14:21:49,291 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-14 14:21:49,292 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 82 transitions, 907 flow [2024-06-14 14:21:49,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:49,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:49,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:49,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 14:21:49,292 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)] === [2024-06-14 14:21:49,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:49,293 INFO L85 PathProgramCache]: Analyzing trace with hash -808946130, now seen corresponding path program 9 times [2024-06-14 14:21:49,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:49,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393675183] [2024-06-14 14:21:49,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:49,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:49,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:49,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393675183] [2024-06-14 14:21:49,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393675183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:49,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:49,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:49,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990401866] [2024-06-14 14:21:49,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:49,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:49,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:49,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:49,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:49,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:49,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 82 transitions, 907 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:49,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:49,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:49,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:49,677 INFO L124 PetriNetUnfolderBase]: 370/685 cut-off events. [2024-06-14 14:21:49,678 INFO L125 PetriNetUnfolderBase]: For 13341/13341 co-relation queries the response was YES. [2024-06-14 14:21:49,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4345 conditions, 685 events. 370/685 cut-off events. For 13341/13341 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3346 event pairs, 43 based on Foata normal form. 3/687 useless extension candidates. Maximal degree in co-relation 4275. Up to 502 conditions per place. [2024-06-14 14:21:49,717 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 74 selfloop transitions, 23 changer transitions 1/100 dead transitions. [2024-06-14 14:21:49,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 100 transitions, 1242 flow [2024-06-14 14:21:49,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:49,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:49,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 14:21:49,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482758620689655 [2024-06-14 14:21:49,718 INFO L175 Difference]: Start difference. First operand has 120 places, 82 transitions, 907 flow. Second operand 10 states and 101 transitions. [2024-06-14 14:21:49,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 100 transitions, 1242 flow [2024-06-14 14:21:49,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 100 transitions, 1174 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:49,736 INFO L231 Difference]: Finished difference. Result has 122 places, 83 transitions, 924 flow [2024-06-14 14:21:49,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=924, PETRI_PLACES=122, PETRI_TRANSITIONS=83} [2024-06-14 14:21:49,737 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 91 predicate places. [2024-06-14 14:21:49,737 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 83 transitions, 924 flow [2024-06-14 14:21:49,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:49,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:49,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:49,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 14:21:49,737 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)] === [2024-06-14 14:21:49,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:49,738 INFO L85 PathProgramCache]: Analyzing trace with hash -580664455, now seen corresponding path program 8 times [2024-06-14 14:21:49,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:49,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129304011] [2024-06-14 14:21:49,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:49,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:49,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:49,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:49,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129304011] [2024-06-14 14:21:49,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129304011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:49,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:49,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:49,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965220904] [2024-06-14 14:21:49,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:49,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:49,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:49,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:49,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:50,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:50,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 83 transitions, 924 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:50,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:50,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:50,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:50,175 INFO L124 PetriNetUnfolderBase]: 388/721 cut-off events. [2024-06-14 14:21:50,175 INFO L125 PetriNetUnfolderBase]: For 14082/14086 co-relation queries the response was YES. [2024-06-14 14:21:50,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4501 conditions, 721 events. 388/721 cut-off events. For 14082/14086 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3596 event pairs, 49 based on Foata normal form. 9/729 useless extension candidates. Maximal degree in co-relation 4430. Up to 525 conditions per place. [2024-06-14 14:21:50,179 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 78 selfloop transitions, 24 changer transitions 1/105 dead transitions. [2024-06-14 14:21:50,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 105 transitions, 1261 flow [2024-06-14 14:21:50,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:50,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:50,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 14:21:50,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620689655172414 [2024-06-14 14:21:50,184 INFO L175 Difference]: Start difference. First operand has 122 places, 83 transitions, 924 flow. Second operand 10 states and 105 transitions. [2024-06-14 14:21:50,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 105 transitions, 1261 flow [2024-06-14 14:21:50,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 105 transitions, 1199 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:50,207 INFO L231 Difference]: Finished difference. Result has 125 places, 85 transitions, 961 flow [2024-06-14 14:21:50,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=961, PETRI_PLACES=125, PETRI_TRANSITIONS=85} [2024-06-14 14:21:50,210 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-14 14:21:50,210 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 85 transitions, 961 flow [2024-06-14 14:21:50,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:50,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:50,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:50,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 14:21:50,211 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)] === [2024-06-14 14:21:50,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:50,211 INFO L85 PathProgramCache]: Analyzing trace with hash -580900675, now seen corresponding path program 9 times [2024-06-14 14:21:50,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:50,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345332628] [2024-06-14 14:21:50,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:50,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:50,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:50,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:50,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345332628] [2024-06-14 14:21:50,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345332628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:50,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:50,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:50,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531357126] [2024-06-14 14:21:50,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:50,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:50,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:50,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:50,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:50,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:50,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 85 transitions, 961 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:50,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:50,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:50,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:50,598 INFO L124 PetriNetUnfolderBase]: 397/736 cut-off events. [2024-06-14 14:21:50,598 INFO L125 PetriNetUnfolderBase]: For 15301/15305 co-relation queries the response was YES. [2024-06-14 14:21:50,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4705 conditions, 736 events. 397/736 cut-off events. For 15301/15305 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3700 event pairs, 47 based on Foata normal form. 3/738 useless extension candidates. Maximal degree in co-relation 4632. Up to 541 conditions per place. [2024-06-14 14:21:50,602 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 74 selfloop transitions, 26 changer transitions 1/103 dead transitions. [2024-06-14 14:21:50,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 103 transitions, 1269 flow [2024-06-14 14:21:50,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:50,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:50,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 14:21:50,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35172413793103446 [2024-06-14 14:21:50,603 INFO L175 Difference]: Start difference. First operand has 125 places, 85 transitions, 961 flow. Second operand 10 states and 102 transitions. [2024-06-14 14:21:50,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 103 transitions, 1269 flow [2024-06-14 14:21:50,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 103 transitions, 1207 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 14:21:50,624 INFO L231 Difference]: Finished difference. Result has 129 places, 86 transitions, 989 flow [2024-06-14 14:21:50,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=989, PETRI_PLACES=129, PETRI_TRANSITIONS=86} [2024-06-14 14:21:50,626 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-14 14:21:50,626 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 86 transitions, 989 flow [2024-06-14 14:21:50,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:50,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:50,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:50,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 14:21:50,627 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)] === [2024-06-14 14:21:50,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:50,627 INFO L85 PathProgramCache]: Analyzing trace with hash -580900830, now seen corresponding path program 10 times [2024-06-14 14:21:50,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:50,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886975275] [2024-06-14 14:21:50,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:50,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:50,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:50,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:50,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886975275] [2024-06-14 14:21:50,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886975275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:50,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:50,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:50,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133328145] [2024-06-14 14:21:50,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:50,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:50,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:50,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:50,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:50,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:50,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 86 transitions, 989 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:50,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:50,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:50,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:51,052 INFO L124 PetriNetUnfolderBase]: 391/727 cut-off events. [2024-06-14 14:21:51,053 INFO L125 PetriNetUnfolderBase]: For 14715/14719 co-relation queries the response was YES. [2024-06-14 14:21:51,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4526 conditions, 727 events. 391/727 cut-off events. For 14715/14719 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3677 event pairs, 45 based on Foata normal form. 3/729 useless extension candidates. Maximal degree in co-relation 4451. Up to 532 conditions per place. [2024-06-14 14:21:51,057 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 74 selfloop transitions, 26 changer transitions 1/103 dead transitions. [2024-06-14 14:21:51,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 103 transitions, 1305 flow [2024-06-14 14:21:51,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:51,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 14:21:51,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35172413793103446 [2024-06-14 14:21:51,058 INFO L175 Difference]: Start difference. First operand has 129 places, 86 transitions, 989 flow. Second operand 10 states and 102 transitions. [2024-06-14 14:21:51,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 103 transitions, 1305 flow [2024-06-14 14:21:51,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 103 transitions, 1227 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:51,084 INFO L231 Difference]: Finished difference. Result has 131 places, 86 transitions, 967 flow [2024-06-14 14:21:51,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=967, PETRI_PLACES=131, PETRI_TRANSITIONS=86} [2024-06-14 14:21:51,085 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-14 14:21:51,085 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 86 transitions, 967 flow [2024-06-14 14:21:51,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:51,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:51,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:51,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 14:21:51,086 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)] === [2024-06-14 14:21:51,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:51,086 INFO L85 PathProgramCache]: Analyzing trace with hash -572620885, now seen corresponding path program 10 times [2024-06-14 14:21:51,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:51,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297259619] [2024-06-14 14:21:51,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:51,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:51,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:51,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:51,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297259619] [2024-06-14 14:21:51,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297259619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:51,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:51,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:51,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207391821] [2024-06-14 14:21:51,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:51,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:51,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:51,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:51,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:51,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:51,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 86 transitions, 967 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:51,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:51,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:51,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:51,478 INFO L124 PetriNetUnfolderBase]: 391/731 cut-off events. [2024-06-14 14:21:51,478 INFO L125 PetriNetUnfolderBase]: For 14767/14771 co-relation queries the response was YES. [2024-06-14 14:21:51,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4518 conditions, 731 events. 391/731 cut-off events. For 14767/14771 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3680 event pairs, 48 based on Foata normal form. 9/739 useless extension candidates. Maximal degree in co-relation 4442. Up to 546 conditions per place. [2024-06-14 14:21:51,483 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 79 selfloop transitions, 24 changer transitions 0/105 dead transitions. [2024-06-14 14:21:51,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 105 transitions, 1281 flow [2024-06-14 14:21:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 14:21:51,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482758620689655 [2024-06-14 14:21:51,486 INFO L175 Difference]: Start difference. First operand has 131 places, 86 transitions, 967 flow. Second operand 10 states and 101 transitions. [2024-06-14 14:21:51,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 105 transitions, 1281 flow [2024-06-14 14:21:51,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 105 transitions, 1185 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 14:21:51,510 INFO L231 Difference]: Finished difference. Result has 133 places, 87 transitions, 963 flow [2024-06-14 14:21:51,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=963, PETRI_PLACES=133, PETRI_TRANSITIONS=87} [2024-06-14 14:21:51,510 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-14 14:21:51,510 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 87 transitions, 963 flow [2024-06-14 14:21:51,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:51,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:51,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:51,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 14:21:51,511 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)] === [2024-06-14 14:21:51,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:51,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1236290187, now seen corresponding path program 1 times [2024-06-14 14:21:51,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:51,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573339006] [2024-06-14 14:21:51,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:51,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:51,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:51,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:51,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573339006] [2024-06-14 14:21:51,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573339006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:51,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:51,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:51,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992689302] [2024-06-14 14:21:51,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:51,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:51,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:51,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:51,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:51,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:51,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 87 transitions, 963 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:51,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:51,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:51,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:52,046 INFO L124 PetriNetUnfolderBase]: 418/784 cut-off events. [2024-06-14 14:21:52,046 INFO L125 PetriNetUnfolderBase]: For 18227/18231 co-relation queries the response was YES. [2024-06-14 14:21:52,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4838 conditions, 784 events. 418/784 cut-off events. For 18227/18231 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4008 event pairs, 11 based on Foata normal form. 13/797 useless extension candidates. Maximal degree in co-relation 4761. Up to 442 conditions per place. [2024-06-14 14:21:52,050 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 71 selfloop transitions, 27 changer transitions 22/122 dead transitions. [2024-06-14 14:21:52,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 122 transitions, 1527 flow [2024-06-14 14:21:52,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:52,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 14:21:52,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38557993730407525 [2024-06-14 14:21:52,052 INFO L175 Difference]: Start difference. First operand has 133 places, 87 transitions, 963 flow. Second operand 11 states and 123 transitions. [2024-06-14 14:21:52,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 122 transitions, 1527 flow [2024-06-14 14:21:52,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 122 transitions, 1410 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-14 14:21:52,077 INFO L231 Difference]: Finished difference. Result has 132 places, 83 transitions, 860 flow [2024-06-14 14:21:52,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=860, PETRI_PLACES=132, PETRI_TRANSITIONS=83} [2024-06-14 14:21:52,078 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-14 14:21:52,078 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 83 transitions, 860 flow [2024-06-14 14:21:52,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:52,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:52,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:52,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 14:21:52,079 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)] === [2024-06-14 14:21:52,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:52,079 INFO L85 PathProgramCache]: Analyzing trace with hash -501376663, now seen corresponding path program 2 times [2024-06-14 14:21:52,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:52,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672643599] [2024-06-14 14:21:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:52,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:52,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:52,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672643599] [2024-06-14 14:21:52,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672643599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:52,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:52,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:52,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966747128] [2024-06-14 14:21:52,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:52,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:52,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:52,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:52,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:52,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:52,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 83 transitions, 860 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:52,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:52,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:52,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:52,606 INFO L124 PetriNetUnfolderBase]: 377/705 cut-off events. [2024-06-14 14:21:52,607 INFO L125 PetriNetUnfolderBase]: For 16016/16020 co-relation queries the response was YES. [2024-06-14 14:21:52,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4222 conditions, 705 events. 377/705 cut-off events. For 16016/16020 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3532 event pairs, 37 based on Foata normal form. 13/718 useless extension candidates. Maximal degree in co-relation 4149. Up to 443 conditions per place. [2024-06-14 14:21:52,611 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 68 selfloop transitions, 24 changer transitions 18/112 dead transitions. [2024-06-14 14:21:52,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 112 transitions, 1334 flow [2024-06-14 14:21:52,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:52,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 14:21:52,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3667711598746082 [2024-06-14 14:21:52,612 INFO L175 Difference]: Start difference. First operand has 132 places, 83 transitions, 860 flow. Second operand 11 states and 117 transitions. [2024-06-14 14:21:52,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 112 transitions, 1334 flow [2024-06-14 14:21:52,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 112 transitions, 1264 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 14:21:52,637 INFO L231 Difference]: Finished difference. Result has 126 places, 80 transitions, 806 flow [2024-06-14 14:21:52,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=806, PETRI_PLACES=126, PETRI_TRANSITIONS=80} [2024-06-14 14:21:52,637 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-14 14:21:52,637 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 80 transitions, 806 flow [2024-06-14 14:21:52,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:52,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:52,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:52,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 14:21:52,638 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)] === [2024-06-14 14:21:52,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:52,639 INFO L85 PathProgramCache]: Analyzing trace with hash -499473883, now seen corresponding path program 3 times [2024-06-14 14:21:52,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:52,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955564037] [2024-06-14 14:21:52,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:52,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:52,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:52,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:52,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955564037] [2024-06-14 14:21:52,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955564037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:52,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:52,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:52,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166843524] [2024-06-14 14:21:52,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:52,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:52,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:52,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:52,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:52,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:52,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 80 transitions, 806 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:52,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:52,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:52,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:53,137 INFO L124 PetriNetUnfolderBase]: 357/669 cut-off events. [2024-06-14 14:21:53,137 INFO L125 PetriNetUnfolderBase]: For 15364/15368 co-relation queries the response was YES. [2024-06-14 14:21:53,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3916 conditions, 669 events. 357/669 cut-off events. For 15364/15368 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3316 event pairs, 37 based on Foata normal form. 13/682 useless extension candidates. Maximal degree in co-relation 3846. Up to 423 conditions per place. [2024-06-14 14:21:53,141 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 66 selfloop transitions, 25 changer transitions 13/106 dead transitions. [2024-06-14 14:21:53,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 106 transitions, 1206 flow [2024-06-14 14:21:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:53,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-14 14:21:53,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3573667711598746 [2024-06-14 14:21:53,143 INFO L175 Difference]: Start difference. First operand has 126 places, 80 transitions, 806 flow. Second operand 11 states and 114 transitions. [2024-06-14 14:21:53,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 106 transitions, 1206 flow [2024-06-14 14:21:53,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 106 transitions, 1154 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 14:21:53,164 INFO L231 Difference]: Finished difference. Result has 123 places, 78 transitions, 782 flow [2024-06-14 14:21:53,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=782, PETRI_PLACES=123, PETRI_TRANSITIONS=78} [2024-06-14 14:21:53,165 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-14 14:21:53,165 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 78 transitions, 782 flow [2024-06-14 14:21:53,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:53,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:53,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:53,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 14:21:53,165 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)] === [2024-06-14 14:21:53,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:53,166 INFO L85 PathProgramCache]: Analyzing trace with hash -499469233, now seen corresponding path program 4 times [2024-06-14 14:21:53,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:53,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441061237] [2024-06-14 14:21:53,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:53,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:53,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:53,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441061237] [2024-06-14 14:21:53,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441061237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:53,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:53,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:53,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67008082] [2024-06-14 14:21:53,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:53,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:53,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:53,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:53,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:53,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:53,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 78 transitions, 782 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:53,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:53,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:53,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:53,673 INFO L124 PetriNetUnfolderBase]: 346/652 cut-off events. [2024-06-14 14:21:53,674 INFO L125 PetriNetUnfolderBase]: For 14321/14325 co-relation queries the response was YES. [2024-06-14 14:21:53,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3760 conditions, 652 events. 346/652 cut-off events. For 14321/14325 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3216 event pairs, 37 based on Foata normal form. 13/665 useless extension candidates. Maximal degree in co-relation 3691. Up to 406 conditions per place. [2024-06-14 14:21:53,678 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 60 selfloop transitions, 21 changer transitions 21/104 dead transitions. [2024-06-14 14:21:53,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 104 transitions, 1134 flow [2024-06-14 14:21:53,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-14 14:21:53,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3542319749216301 [2024-06-14 14:21:53,679 INFO L175 Difference]: Start difference. First operand has 123 places, 78 transitions, 782 flow. Second operand 11 states and 113 transitions. [2024-06-14 14:21:53,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 104 transitions, 1134 flow [2024-06-14 14:21:53,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 104 transitions, 1080 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 14:21:53,699 INFO L231 Difference]: Finished difference. Result has 121 places, 73 transitions, 738 flow [2024-06-14 14:21:53,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=738, PETRI_PLACES=121, PETRI_TRANSITIONS=73} [2024-06-14 14:21:53,699 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-14 14:21:53,700 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 73 transitions, 738 flow [2024-06-14 14:21:53,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:53,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:53,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:53,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 14:21:53,700 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)] === [2024-06-14 14:21:53,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:53,701 INFO L85 PathProgramCache]: Analyzing trace with hash 342631717, now seen corresponding path program 5 times [2024-06-14 14:21:53,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:53,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526657820] [2024-06-14 14:21:53,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:53,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:53,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:53,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526657820] [2024-06-14 14:21:53,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526657820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:53,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:53,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:53,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905832470] [2024-06-14 14:21:53,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:53,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:53,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:53,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:53,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:53,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:53,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 73 transitions, 738 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:53,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:53,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:53,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:54,145 INFO L124 PetriNetUnfolderBase]: 329/616 cut-off events. [2024-06-14 14:21:54,145 INFO L125 PetriNetUnfolderBase]: For 12979/12979 co-relation queries the response was YES. [2024-06-14 14:21:54,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 616 events. 329/616 cut-off events. For 12979/12979 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 2980 event pairs, 33 based on Foata normal form. 9/625 useless extension candidates. Maximal degree in co-relation 3543. Up to 377 conditions per place. [2024-06-14 14:21:54,149 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 60 selfloop transitions, 19 changer transitions 18/99 dead transitions. [2024-06-14 14:21:54,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 99 transitions, 1178 flow [2024-06-14 14:21:54,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:54,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:54,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-14 14:21:54,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3542319749216301 [2024-06-14 14:21:54,150 INFO L175 Difference]: Start difference. First operand has 121 places, 73 transitions, 738 flow. Second operand 11 states and 113 transitions. [2024-06-14 14:21:54,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 99 transitions, 1178 flow [2024-06-14 14:21:54,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 99 transitions, 1091 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-14 14:21:54,168 INFO L231 Difference]: Finished difference. Result has 114 places, 70 transitions, 671 flow [2024-06-14 14:21:54,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=671, PETRI_PLACES=114, PETRI_TRANSITIONS=70} [2024-06-14 14:21:54,168 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-14 14:21:54,168 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 70 transitions, 671 flow [2024-06-14 14:21:54,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:54,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:54,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:54,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 14:21:54,169 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)] === [2024-06-14 14:21:54,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:54,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1218275177, now seen corresponding path program 6 times [2024-06-14 14:21:54,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:54,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162056829] [2024-06-14 14:21:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:54,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:54,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:54,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:54,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162056829] [2024-06-14 14:21:54,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162056829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:54,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:54,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:54,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487848707] [2024-06-14 14:21:54,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:54,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:54,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:54,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:54,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:54,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:54,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 70 transitions, 671 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:54,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:54,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:54,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:54,630 INFO L124 PetriNetUnfolderBase]: 309/580 cut-off events. [2024-06-14 14:21:54,630 INFO L125 PetriNetUnfolderBase]: For 11049/11053 co-relation queries the response was YES. [2024-06-14 14:21:54,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3226 conditions, 580 events. 309/580 cut-off events. For 11049/11053 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2758 event pairs, 33 based on Foata normal form. 13/593 useless extension candidates. Maximal degree in co-relation 3161. Up to 357 conditions per place. [2024-06-14 14:21:54,634 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 58 selfloop transitions, 20 changer transitions 13/93 dead transitions. [2024-06-14 14:21:54,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 93 transitions, 1029 flow [2024-06-14 14:21:54,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:54,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:54,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-14 14:21:54,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-14 14:21:54,635 INFO L175 Difference]: Start difference. First operand has 114 places, 70 transitions, 671 flow. Second operand 11 states and 110 transitions. [2024-06-14 14:21:54,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 93 transitions, 1029 flow [2024-06-14 14:21:54,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 93 transitions, 987 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 14:21:54,649 INFO L231 Difference]: Finished difference. Result has 111 places, 68 transitions, 649 flow [2024-06-14 14:21:54,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=649, PETRI_PLACES=111, PETRI_TRANSITIONS=68} [2024-06-14 14:21:54,650 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-14 14:21:54,650 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 68 transitions, 649 flow [2024-06-14 14:21:54,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:54,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:54,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:54,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 14:21:54,651 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)] === [2024-06-14 14:21:54,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:54,651 INFO L85 PathProgramCache]: Analyzing trace with hash 427061391, now seen corresponding path program 7 times [2024-06-14 14:21:54,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:54,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746563836] [2024-06-14 14:21:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:54,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:54,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:54,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746563836] [2024-06-14 14:21:54,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746563836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:54,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:54,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:54,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467450698] [2024-06-14 14:21:54,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:54,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:54,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:54,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:54,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:54,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:54,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 68 transitions, 649 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:54,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:54,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:54,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:55,092 INFO L124 PetriNetUnfolderBase]: 298/563 cut-off events. [2024-06-14 14:21:55,093 INFO L125 PetriNetUnfolderBase]: For 10716/10720 co-relation queries the response was YES. [2024-06-14 14:21:55,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3080 conditions, 563 events. 298/563 cut-off events. For 10716/10720 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2677 event pairs, 15 based on Foata normal form. 13/576 useless extension candidates. Maximal degree in co-relation 3016. Up to 340 conditions per place. [2024-06-14 14:21:55,096 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 55 selfloop transitions, 17 changer transitions 17/91 dead transitions. [2024-06-14 14:21:55,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 91 transitions, 963 flow [2024-06-14 14:21:55,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:55,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:55,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-14 14:21:55,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34169278996865204 [2024-06-14 14:21:55,097 INFO L175 Difference]: Start difference. First operand has 111 places, 68 transitions, 649 flow. Second operand 11 states and 109 transitions. [2024-06-14 14:21:55,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 91 transitions, 963 flow [2024-06-14 14:21:55,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 91 transitions, 919 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 14:21:55,110 INFO L231 Difference]: Finished difference. Result has 109 places, 64 transitions, 611 flow [2024-06-14 14:21:55,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=611, PETRI_PLACES=109, PETRI_TRANSITIONS=64} [2024-06-14 14:21:55,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-14 14:21:55,110 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 64 transitions, 611 flow [2024-06-14 14:21:55,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:55,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:55,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:55,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 14:21:55,111 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)] === [2024-06-14 14:21:55,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:55,111 INFO L85 PathProgramCache]: Analyzing trace with hash 632792271, now seen corresponding path program 8 times [2024-06-14 14:21:55,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:55,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756151984] [2024-06-14 14:21:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:55,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:55,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:55,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756151984] [2024-06-14 14:21:55,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756151984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:55,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:55,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:55,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064438501] [2024-06-14 14:21:55,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:55,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:55,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:55,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:55,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:55,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:55,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 64 transitions, 611 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:55,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:55,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:55,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:55,552 INFO L124 PetriNetUnfolderBase]: 285/538 cut-off events. [2024-06-14 14:21:55,552 INFO L125 PetriNetUnfolderBase]: For 9690/9690 co-relation queries the response was YES. [2024-06-14 14:21:55,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2972 conditions, 538 events. 285/538 cut-off events. For 9690/9690 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2508 event pairs, 33 based on Foata normal form. 9/547 useless extension candidates. Maximal degree in co-relation 2909. Up to 319 conditions per place. [2024-06-14 14:21:55,555 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 54 selfloop transitions, 16 changer transitions 18/90 dead transitions. [2024-06-14 14:21:55,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 90 transitions, 941 flow [2024-06-14 14:21:55,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-14 14:21:55,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3510971786833856 [2024-06-14 14:21:55,556 INFO L175 Difference]: Start difference. First operand has 109 places, 64 transitions, 611 flow. Second operand 11 states and 112 transitions. [2024-06-14 14:21:55,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 90 transitions, 941 flow [2024-06-14 14:21:55,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 90 transitions, 883 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 14:21:55,570 INFO L231 Difference]: Finished difference. Result has 104 places, 61 transitions, 561 flow [2024-06-14 14:21:55,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=561, PETRI_PLACES=104, PETRI_TRANSITIONS=61} [2024-06-14 14:21:55,570 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-14 14:21:55,571 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 61 transitions, 561 flow [2024-06-14 14:21:55,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:55,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:55,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:55,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 14:21:55,571 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)] === [2024-06-14 14:21:55,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:55,572 INFO L85 PathProgramCache]: Analyzing trace with hash 625464801, now seen corresponding path program 9 times [2024-06-14 14:21:55,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:55,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917707612] [2024-06-14 14:21:55,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:55,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:55,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:55,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917707612] [2024-06-14 14:21:55,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917707612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:55,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:55,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:55,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397617253] [2024-06-14 14:21:55,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:55,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:55,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:55,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:55,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:55,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:55,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 61 transitions, 561 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:55,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:55,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:55,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:56,056 INFO L124 PetriNetUnfolderBase]: 265/502 cut-off events. [2024-06-14 14:21:56,056 INFO L125 PetriNetUnfolderBase]: For 8119/8119 co-relation queries the response was YES. [2024-06-14 14:21:56,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2716 conditions, 502 events. 265/502 cut-off events. For 8119/8119 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2303 event pairs, 33 based on Foata normal form. 9/511 useless extension candidates. Maximal degree in co-relation 2655. Up to 299 conditions per place. [2024-06-14 14:21:56,059 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 52 selfloop transitions, 17 changer transitions 13/84 dead transitions. [2024-06-14 14:21:56,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 84 transitions, 893 flow [2024-06-14 14:21:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-14 14:21:56,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34169278996865204 [2024-06-14 14:21:56,061 INFO L175 Difference]: Start difference. First operand has 104 places, 61 transitions, 561 flow. Second operand 11 states and 109 transitions. [2024-06-14 14:21:56,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 84 transitions, 893 flow [2024-06-14 14:21:56,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 84 transitions, 845 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-14 14:21:56,073 INFO L231 Difference]: Finished difference. Result has 100 places, 59 transitions, 537 flow [2024-06-14 14:21:56,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=537, PETRI_PLACES=100, PETRI_TRANSITIONS=59} [2024-06-14 14:21:56,073 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-14 14:21:56,074 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 59 transitions, 537 flow [2024-06-14 14:21:56,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:56,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:56,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:56,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 14:21:56,074 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)] === [2024-06-14 14:21:56,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:56,075 INFO L85 PathProgramCache]: Analyzing trace with hash 625469451, now seen corresponding path program 10 times [2024-06-14 14:21:56,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:56,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840746691] [2024-06-14 14:21:56,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:56,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:56,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:56,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840746691] [2024-06-14 14:21:56,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840746691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:56,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:56,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:56,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130505242] [2024-06-14 14:21:56,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:56,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:56,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:56,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:56,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:56,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:56,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 59 transitions, 537 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:56,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:56,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:56,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:56,733 INFO L124 PetriNetUnfolderBase]: 254/485 cut-off events. [2024-06-14 14:21:56,740 INFO L125 PetriNetUnfolderBase]: For 7368/7372 co-relation queries the response was YES. [2024-06-14 14:21:56,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2529 conditions, 485 events. 254/485 cut-off events. For 7368/7372 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2188 event pairs, 15 based on Foata normal form. 13/498 useless extension candidates. Maximal degree in co-relation 2470. Up to 282 conditions per place. [2024-06-14 14:21:56,743 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 45 selfloop transitions, 12 changer transitions 23/82 dead transitions. [2024-06-14 14:21:56,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 82 transitions, 825 flow [2024-06-14 14:21:56,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:56,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:56,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-14 14:21:56,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385579937304075 [2024-06-14 14:21:56,747 INFO L175 Difference]: Start difference. First operand has 100 places, 59 transitions, 537 flow. Second operand 11 states and 108 transitions. [2024-06-14 14:21:56,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 82 transitions, 825 flow [2024-06-14 14:21:56,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 82 transitions, 787 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 14:21:56,764 INFO L231 Difference]: Finished difference. Result has 98 places, 53 transitions, 474 flow [2024-06-14 14:21:56,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=474, PETRI_PLACES=98, PETRI_TRANSITIONS=53} [2024-06-14 14:21:56,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-14 14:21:56,765 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 53 transitions, 474 flow [2024-06-14 14:21:56,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:56,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:56,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:56,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 14:21:56,766 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)] === [2024-06-14 14:21:56,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:56,766 INFO L85 PathProgramCache]: Analyzing trace with hash 61337465, now seen corresponding path program 11 times [2024-06-14 14:21:56,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:56,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240793708] [2024-06-14 14:21:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:56,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:56,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:56,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:56,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240793708] [2024-06-14 14:21:56,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240793708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:56,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:56,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:56,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429006299] [2024-06-14 14:21:56,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:56,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:56,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:56,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:56,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:57,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:57,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 53 transitions, 474 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:57,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:57,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:57,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:57,206 INFO L124 PetriNetUnfolderBase]: 236/441 cut-off events. [2024-06-14 14:21:57,207 INFO L125 PetriNetUnfolderBase]: For 6492/6496 co-relation queries the response was YES. [2024-06-14 14:21:57,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2359 conditions, 441 events. 236/441 cut-off events. For 6492/6496 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1945 event pairs, 32 based on Foata normal form. 13/454 useless extension candidates. Maximal degree in co-relation 2301. Up to 261 conditions per place. [2024-06-14 14:21:57,225 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 44 selfloop transitions, 12 changer transitions 18/76 dead transitions. [2024-06-14 14:21:57,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 76 transitions, 760 flow [2024-06-14 14:21:57,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:57,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-14 14:21:57,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.335423197492163 [2024-06-14 14:21:57,227 INFO L175 Difference]: Start difference. First operand has 98 places, 53 transitions, 474 flow. Second operand 11 states and 107 transitions. [2024-06-14 14:21:57,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 76 transitions, 760 flow [2024-06-14 14:21:57,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 76 transitions, 694 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-06-14 14:21:57,243 INFO L231 Difference]: Finished difference. Result has 87 places, 50 transitions, 410 flow [2024-06-14 14:21:57,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=410, PETRI_PLACES=87, PETRI_TRANSITIONS=50} [2024-06-14 14:21:57,244 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-14 14:21:57,245 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 50 transitions, 410 flow [2024-06-14 14:21:57,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:57,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:57,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:57,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 14:21:57,254 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)] === [2024-06-14 14:21:57,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:57,256 INFO L85 PathProgramCache]: Analyzing trace with hash 54009995, now seen corresponding path program 12 times [2024-06-14 14:21:57,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:57,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215083365] [2024-06-14 14:21:57,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:57,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:57,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:57,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215083365] [2024-06-14 14:21:57,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215083365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:57,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:57,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:57,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378248832] [2024-06-14 14:21:57,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:57,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:57,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:57,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:57,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:57,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:57,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 50 transitions, 410 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:57,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:57,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:57,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:57,685 INFO L124 PetriNetUnfolderBase]: 216/407 cut-off events. [2024-06-14 14:21:57,686 INFO L125 PetriNetUnfolderBase]: For 5037/5041 co-relation queries the response was YES. [2024-06-14 14:21:57,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2074 conditions, 407 events. 216/407 cut-off events. For 5037/5041 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1749 event pairs, 32 based on Foata normal form. 13/420 useless extension candidates. Maximal degree in co-relation 2022. Up to 241 conditions per place. [2024-06-14 14:21:57,688 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 42 selfloop transitions, 13 changer transitions 13/70 dead transitions. [2024-06-14 14:21:57,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 70 transitions, 686 flow [2024-06-14 14:21:57,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:57,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:57,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-14 14:21:57,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32601880877742945 [2024-06-14 14:21:57,689 INFO L175 Difference]: Start difference. First operand has 87 places, 50 transitions, 410 flow. Second operand 11 states and 104 transitions. [2024-06-14 14:21:57,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 70 transitions, 686 flow [2024-06-14 14:21:57,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 70 transitions, 646 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-14 14:21:57,696 INFO L231 Difference]: Finished difference. Result has 83 places, 48 transitions, 388 flow [2024-06-14 14:21:57,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=388, PETRI_PLACES=83, PETRI_TRANSITIONS=48} [2024-06-14 14:21:57,696 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-14 14:21:57,696 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 48 transitions, 388 flow [2024-06-14 14:21:57,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:57,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:57,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:57,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 14:21:57,697 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)] === [2024-06-14 14:21:57,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:57,697 INFO L85 PathProgramCache]: Analyzing trace with hash 54014645, now seen corresponding path program 13 times [2024-06-14 14:21:57,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:57,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698766795] [2024-06-14 14:21:57,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:57,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:58,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:58,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698766795] [2024-06-14 14:21:58,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698766795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:58,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:58,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:58,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382567971] [2024-06-14 14:21:58,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:58,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:58,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:58,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:58,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:58,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:58,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 48 transitions, 388 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:58,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:58,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:58,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:58,199 INFO L124 PetriNetUnfolderBase]: 205/388 cut-off events. [2024-06-14 14:21:58,199 INFO L125 PetriNetUnfolderBase]: For 4228/4228 co-relation queries the response was YES. [2024-06-14 14:21:58,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 388 events. 205/388 cut-off events. For 4228/4228 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1652 event pairs, 32 based on Foata normal form. 9/397 useless extension candidates. Maximal degree in co-relation 1855. Up to 224 conditions per place. [2024-06-14 14:21:58,201 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 39 selfloop transitions, 10 changer transitions 17/68 dead transitions. [2024-06-14 14:21:58,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 68 transitions, 630 flow [2024-06-14 14:21:58,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:58,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-14 14:21:58,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.322884012539185 [2024-06-14 14:21:58,202 INFO L175 Difference]: Start difference. First operand has 83 places, 48 transitions, 388 flow. Second operand 11 states and 103 transitions. [2024-06-14 14:21:58,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 68 transitions, 630 flow [2024-06-14 14:21:58,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 68 transitions, 600 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 14:21:58,206 INFO L231 Difference]: Finished difference. Result has 81 places, 44 transitions, 346 flow [2024-06-14 14:21:58,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=346, PETRI_PLACES=81, PETRI_TRANSITIONS=44} [2024-06-14 14:21:58,207 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-14 14:21:58,207 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 44 transitions, 346 flow [2024-06-14 14:21:58,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:58,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:58,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:58,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 14:21:58,208 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)] === [2024-06-14 14:21:58,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:58,208 INFO L85 PathProgramCache]: Analyzing trace with hash -228823089, now seen corresponding path program 14 times [2024-06-14 14:21:58,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:58,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919079398] [2024-06-14 14:21:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:58,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:58,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:58,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919079398] [2024-06-14 14:21:58,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919079398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:58,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:58,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:58,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661496813] [2024-06-14 14:21:58,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:58,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:58,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:58,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:58,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:58,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:58,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 44 transitions, 346 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:58,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:58,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:58,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:58,618 INFO L124 PetriNetUnfolderBase]: 192/361 cut-off events. [2024-06-14 14:21:58,618 INFO L125 PetriNetUnfolderBase]: For 3766/3768 co-relation queries the response was YES. [2024-06-14 14:21:58,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1791 conditions, 361 events. 192/361 cut-off events. For 3766/3768 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1482 event pairs, 28 based on Foata normal form. 11/372 useless extension candidates. Maximal degree in co-relation 1742. Up to 189 conditions per place. [2024-06-14 14:21:58,620 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 36 selfloop transitions, 11 changer transitions 18/67 dead transitions. [2024-06-14 14:21:58,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 67 transitions, 648 flow [2024-06-14 14:21:58,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:58,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-14 14:21:58,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3322884012539185 [2024-06-14 14:21:58,621 INFO L175 Difference]: Start difference. First operand has 81 places, 44 transitions, 346 flow. Second operand 11 states and 106 transitions. [2024-06-14 14:21:58,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 67 transitions, 648 flow [2024-06-14 14:21:58,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 67 transitions, 590 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-14 14:21:58,625 INFO L231 Difference]: Finished difference. Result has 75 places, 41 transitions, 304 flow [2024-06-14 14:21:58,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=304, PETRI_PLACES=75, PETRI_TRANSITIONS=41} [2024-06-14 14:21:58,626 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-14 14:21:58,626 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 41 transitions, 304 flow [2024-06-14 14:21:58,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:58,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:58,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:58,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 14:21:58,627 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)] === [2024-06-14 14:21:58,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:58,627 INFO L85 PathProgramCache]: Analyzing trace with hash -226920309, now seen corresponding path program 15 times [2024-06-14 14:21:58,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:58,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198924489] [2024-06-14 14:21:58,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:58,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:58,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:58,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:58,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198924489] [2024-06-14 14:21:58,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198924489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:58,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:58,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:58,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485563880] [2024-06-14 14:21:58,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:58,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:58,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:58,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:58,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:58,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:58,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 41 transitions, 304 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:58,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:58,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:58,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:59,023 INFO L124 PetriNetUnfolderBase]: 172/329 cut-off events. [2024-06-14 14:21:59,023 INFO L125 PetriNetUnfolderBase]: For 2766/2766 co-relation queries the response was YES. [2024-06-14 14:21:59,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1505 conditions, 329 events. 172/329 cut-off events. For 2766/2766 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1303 event pairs, 28 based on Foata normal form. 9/338 useless extension candidates. Maximal degree in co-relation 1459. Up to 169 conditions per place. [2024-06-14 14:21:59,025 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 34 selfloop transitions, 12 changer transitions 13/61 dead transitions. [2024-06-14 14:21:59,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 61 transitions, 542 flow [2024-06-14 14:21:59,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:59,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-14 14:21:59,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.322884012539185 [2024-06-14 14:21:59,026 INFO L175 Difference]: Start difference. First operand has 75 places, 41 transitions, 304 flow. Second operand 11 states and 103 transitions. [2024-06-14 14:21:59,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 61 transitions, 542 flow [2024-06-14 14:21:59,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 61 transitions, 508 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 14:21:59,030 INFO L231 Difference]: Finished difference. Result has 71 places, 39 transitions, 284 flow [2024-06-14 14:21:59,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=284, PETRI_PLACES=71, PETRI_TRANSITIONS=39} [2024-06-14 14:21:59,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-14 14:21:59,030 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 39 transitions, 284 flow [2024-06-14 14:21:59,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:59,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:59,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:59,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 14:21:59,031 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)] === [2024-06-14 14:21:59,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:59,031 INFO L85 PathProgramCache]: Analyzing trace with hash -226915659, now seen corresponding path program 16 times [2024-06-14 14:21:59,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:59,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106218915] [2024-06-14 14:21:59,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:59,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:59,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:59,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106218915] [2024-06-14 14:21:59,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106218915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:59,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:59,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:59,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577345249] [2024-06-14 14:21:59,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:59,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:59,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:59,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:59,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:59,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:59,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 39 transitions, 284 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:59,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:59,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:59,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:59,429 INFO L124 PetriNetUnfolderBase]: 161/310 cut-off events. [2024-06-14 14:21:59,429 INFO L125 PetriNetUnfolderBase]: For 2279/2279 co-relation queries the response was YES. [2024-06-14 14:21:59,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1360 conditions, 310 events. 161/310 cut-off events. For 2279/2279 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1192 event pairs, 10 based on Foata normal form. 9/319 useless extension candidates. Maximal degree in co-relation 1316. Up to 152 conditions per place. [2024-06-14 14:21:59,430 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 30 selfloop transitions, 8 changer transitions 19/59 dead transitions. [2024-06-14 14:21:59,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 59 transitions, 496 flow [2024-06-14 14:21:59,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:59,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-14 14:21:59,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31974921630094044 [2024-06-14 14:21:59,431 INFO L175 Difference]: Start difference. First operand has 71 places, 39 transitions, 284 flow. Second operand 11 states and 102 transitions. [2024-06-14 14:21:59,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 59 transitions, 496 flow [2024-06-14 14:21:59,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 59 transitions, 468 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 14:21:59,434 INFO L231 Difference]: Finished difference. Result has 69 places, 34 transitions, 241 flow [2024-06-14 14:21:59,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=241, PETRI_PLACES=69, PETRI_TRANSITIONS=34} [2024-06-14 14:21:59,435 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2024-06-14 14:21:59,435 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 34 transitions, 241 flow [2024-06-14 14:21:59,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:59,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:59,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:59,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 14:21:59,435 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)] === [2024-06-14 14:21:59,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:59,436 INFO L85 PathProgramCache]: Analyzing trace with hash -820728259, now seen corresponding path program 17 times [2024-06-14 14:21:59,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:59,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802100111] [2024-06-14 14:21:59,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:59,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:59,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:59,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802100111] [2024-06-14 14:21:59,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802100111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:59,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:59,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:59,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809842024] [2024-06-14 14:21:59,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:59,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:59,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:59,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:59,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:59,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:59,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 34 transitions, 241 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:59,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:59,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:59,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:59,819 INFO L124 PetriNetUnfolderBase]: 147/278 cut-off events. [2024-06-14 14:21:59,819 INFO L125 PetriNetUnfolderBase]: For 2080/2088 co-relation queries the response was YES. [2024-06-14 14:21:59,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1242 conditions, 278 events. 147/278 cut-off events. For 2080/2088 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1036 event pairs, 28 based on Foata normal form. 17/295 useless extension candidates. Maximal degree in co-relation 1199. Up to 131 conditions per place. [2024-06-14 14:21:59,820 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 28 selfloop transitions, 9 changer transitions 18/57 dead transitions. [2024-06-14 14:21:59,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 57 transitions, 465 flow [2024-06-14 14:21:59,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:59,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:59,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-14 14:21:59,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3322884012539185 [2024-06-14 14:21:59,821 INFO L175 Difference]: Start difference. First operand has 69 places, 34 transitions, 241 flow. Second operand 11 states and 106 transitions. [2024-06-14 14:21:59,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 57 transitions, 465 flow [2024-06-14 14:21:59,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 414 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-14 14:21:59,824 INFO L231 Difference]: Finished difference. Result has 61 places, 31 transitions, 195 flow [2024-06-14 14:21:59,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=195, PETRI_PLACES=61, PETRI_TRANSITIONS=31} [2024-06-14 14:21:59,824 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-14 14:21:59,824 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 31 transitions, 195 flow [2024-06-14 14:21:59,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:59,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:59,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:59,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 14:21:59,825 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)] === [2024-06-14 14:21:59,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:59,825 INFO L85 PathProgramCache]: Analyzing trace with hash -828051079, now seen corresponding path program 18 times [2024-06-14 14:21:59,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:59,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420275636] [2024-06-14 14:21:59,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:59,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:22:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:22:00,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:22:00,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420275636] [2024-06-14 14:22:00,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420275636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:22:00,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:22:00,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:22:00,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987760149] [2024-06-14 14:22:00,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:22:00,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:22:00,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:22:00,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:22:00,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:22:00,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:22:00,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 31 transitions, 195 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:00,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:22:00,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:22:00,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:22:00,227 INFO L124 PetriNetUnfolderBase]: 127/246 cut-off events. [2024-06-14 14:22:00,227 INFO L125 PetriNetUnfolderBase]: For 1313/1313 co-relation queries the response was YES. [2024-06-14 14:22:00,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 246 events. 127/246 cut-off events. For 1313/1313 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 881 event pairs, 28 based on Foata normal form. 9/255 useless extension candidates. Maximal degree in co-relation 953. Up to 111 conditions per place. [2024-06-14 14:22:00,228 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 26 selfloop transitions, 10 changer transitions 13/51 dead transitions. [2024-06-14 14:22:00,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 51 transitions, 379 flow [2024-06-14 14:22:00,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:22:00,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:22:00,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-14 14:22:00,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.322884012539185 [2024-06-14 14:22:00,229 INFO L175 Difference]: Start difference. First operand has 61 places, 31 transitions, 195 flow. Second operand 11 states and 103 transitions. [2024-06-14 14:22:00,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 51 transitions, 379 flow [2024-06-14 14:22:00,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 346 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 14:22:00,231 INFO L231 Difference]: Finished difference. Result has 56 places, 29 transitions, 175 flow [2024-06-14 14:22:00,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=175, PETRI_PLACES=56, PETRI_TRANSITIONS=29} [2024-06-14 14:22:00,231 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-14 14:22:00,232 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 29 transitions, 175 flow [2024-06-14 14:22:00,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:00,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:22:00,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:22:00,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 14:22:00,232 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)] === [2024-06-14 14:22:00,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:22:00,233 INFO L85 PathProgramCache]: Analyzing trace with hash -828055729, now seen corresponding path program 19 times [2024-06-14 14:22:00,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:22:00,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481337672] [2024-06-14 14:22:00,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:22:00,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:22:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:22:00,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:22:00,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:22:00,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481337672] [2024-06-14 14:22:00,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481337672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:22:00,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:22:00,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:22:00,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382982318] [2024-06-14 14:22:00,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:22:00,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:22:00,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:22:00,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:22:00,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:22:00,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:22:00,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 29 transitions, 175 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:00,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:22:00,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:22:00,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:22:00,622 INFO L124 PetriNetUnfolderBase]: 116/229 cut-off events. [2024-06-14 14:22:00,622 INFO L125 PetriNetUnfolderBase]: For 984/984 co-relation queries the response was YES. [2024-06-14 14:22:00,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 229 events. 116/229 cut-off events. For 984/984 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 802 event pairs, 10 based on Foata normal form. 9/238 useless extension candidates. Maximal degree in co-relation 852. Up to 94 conditions per place. [2024-06-14 14:22:00,623 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 23 selfloop transitions, 7 changer transitions 17/49 dead transitions. [2024-06-14 14:22:00,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 49 transitions, 361 flow [2024-06-14 14:22:00,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:22:00,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:22:00,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-14 14:22:00,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31974921630094044 [2024-06-14 14:22:00,624 INFO L175 Difference]: Start difference. First operand has 56 places, 29 transitions, 175 flow. Second operand 11 states and 102 transitions. [2024-06-14 14:22:00,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 49 transitions, 361 flow [2024-06-14 14:22:00,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 49 transitions, 331 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 14:22:00,626 INFO L231 Difference]: Finished difference. Result has 54 places, 25 transitions, 140 flow [2024-06-14 14:22:00,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=140, PETRI_PLACES=54, PETRI_TRANSITIONS=25} [2024-06-14 14:22:00,626 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-14 14:22:00,626 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 25 transitions, 140 flow [2024-06-14 14:22:00,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:00,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:22:00,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:22:00,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 14:22:00,627 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)] === [2024-06-14 14:22:00,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:22:00,627 INFO L85 PathProgramCache]: Analyzing trace with hash -571377589, now seen corresponding path program 20 times [2024-06-14 14:22:00,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:22:00,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344141862] [2024-06-14 14:22:00,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:22:00,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:22:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:22:00,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:22:00,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:22:00,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344141862] [2024-06-14 14:22:00,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344141862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:22:00,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:22:00,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:22:00,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169586756] [2024-06-14 14:22:00,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:22:00,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:22:00,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:22:00,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:22:00,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:22:00,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:22:00,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 25 transitions, 140 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:00,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:22:00,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:22:00,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:22:00,974 INFO L124 PetriNetUnfolderBase]: 58/124 cut-off events. [2024-06-14 14:22:00,975 INFO L125 PetriNetUnfolderBase]: For 443/443 co-relation queries the response was YES. [2024-06-14 14:22:00,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 124 events. 58/124 cut-off events. For 443/443 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 313 event pairs, 0 based on Foata normal form. 9/133 useless extension candidates. Maximal degree in co-relation 410. Up to 51 conditions per place. [2024-06-14 14:22:00,975 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2024-06-14 14:22:00,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 39 transitions, 250 flow [2024-06-14 14:22:00,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:22:00,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:22:00,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 93 transitions. [2024-06-14 14:22:00,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29153605015673983 [2024-06-14 14:22:00,976 INFO L175 Difference]: Start difference. First operand has 54 places, 25 transitions, 140 flow. Second operand 11 states and 93 transitions. [2024-06-14 14:22:00,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 39 transitions, 250 flow [2024-06-14 14:22:00,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 222 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 14:22:00,977 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2024-06-14 14:22:00,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2024-06-14 14:22:00,977 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-14 14:22:00,977 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2024-06-14 14:22:00,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:00,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 14:22:00,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 14:22:00,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 14:22:00,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 14:22:00,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 14:22:00,981 INFO L445 BasicCegarLoop]: Path program histogram: [20, 10, 10, 6, 1, 1, 1, 1, 1] [2024-06-14 14:22:00,983 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 14:22:00,984 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 14:22:00,988 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 14:22:00,992 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 14:22:00,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 02:22:00 BasicIcfg [2024-06-14 14:22:00,998 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 14:22:00,998 INFO L158 Benchmark]: Toolchain (without parser) took 23531.97ms. Allocated memory was 216.0MB in the beginning and 696.3MB in the end (delta: 480.2MB). Free memory was 184.7MB in the beginning and 659.8MB in the end (delta: -475.1MB). Peak memory consumption was 421.1MB. Max. memory is 16.1GB. [2024-06-14 14:22:00,998 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 140.5MB. Free memory was 103.0MB in the beginning and 102.8MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 14:22:00,999 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 140.5MB. Free memory was 109.4MB in the beginning and 109.3MB in the end (delta: 38.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 14:22:00,999 INFO L158 Benchmark]: CACSL2BoogieTranslator took 426.85ms. Allocated memory is still 216.0MB. Free memory was 184.7MB in the beginning and 158.6MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-14 14:22:00,999 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.46ms. Allocated memory is still 216.0MB. Free memory was 158.6MB in the beginning and 156.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 14:22:01,000 INFO L158 Benchmark]: Boogie Preprocessor took 37.95ms. Allocated memory is still 216.0MB. Free memory was 156.4MB in the beginning and 154.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 14:22:01,000 INFO L158 Benchmark]: RCFGBuilder took 365.60ms. Allocated memory is still 216.0MB. Free memory was 154.4MB in the beginning and 127.1MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-06-14 14:22:01,000 INFO L158 Benchmark]: TraceAbstraction took 22657.78ms. Allocated memory was 216.0MB in the beginning and 696.3MB in the end (delta: 480.2MB). Free memory was 126.9MB in the beginning and 659.8MB in the end (delta: -532.8MB). Peak memory consumption was 364.5MB. Max. memory is 16.1GB. [2024-06-14 14:22:01,001 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 140.5MB. Free memory was 103.0MB in the beginning and 102.8MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.11ms. Allocated memory is still 140.5MB. Free memory was 109.4MB in the beginning and 109.3MB in the end (delta: 38.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 426.85ms. Allocated memory is still 216.0MB. Free memory was 184.7MB in the beginning and 158.6MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.46ms. Allocated memory is still 216.0MB. Free memory was 158.6MB in the beginning and 156.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.95ms. Allocated memory is still 216.0MB. Free memory was 156.4MB in the beginning and 154.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 365.60ms. Allocated memory is still 216.0MB. Free memory was 154.4MB in the beginning and 127.1MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 22657.78ms. Allocated memory was 216.0MB in the beginning and 696.3MB in the end (delta: 480.2MB). Free memory was 126.9MB in the beginning and 659.8MB in the end (delta: -532.8MB). Peak memory consumption was 364.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 721]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 722]: 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, 39 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: 22.6s, OverallIterations: 51, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 10.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3402 SdHoareTripleChecker+Valid, 6.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2968 mSDsluCounter, 574 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 473 mSDsCounter, 463 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15731 IncrementalHoareTripleChecker+Invalid, 16194 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 463 mSolverCounterUnsat, 101 mSDtfsCounter, 15731 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 407 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 407 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=989occurred in iteration=29, InterpolantAutomatonStates: 509, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 11.7s InterpolantComputationTime, 902 NumberOfCodeBlocks, 902 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 851 ConstructedInterpolants, 0 QuantifiedInterpolants, 17729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 51 InterpolantComputations, 51 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! [2024-06-14 14:22:01,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE