./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe006_power.oepc-thin000_power.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe006_power.oepc-thin000_power.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_power.oepc-thin000_power.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/safe006_power.oepc-thin000_power.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 20:56:36,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 20:56:36,717 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 20:56:36,723 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 20:56:36,723 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 20:56:36,753 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 20:56:36,754 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 20:56:36,755 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 20:56:36,755 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 20:56:36,759 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 20:56:36,759 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 20:56:36,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 20:56:36,761 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 20:56:36,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 20:56:36,762 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 20:56:36,762 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 20:56:36,763 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 20:56:36,763 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 20:56:36,763 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 20:56:36,764 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 20:56:36,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 20:56:36,764 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 20:56:36,765 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 20:56:36,765 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 20:56:36,765 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 20:56:36,765 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 20:56:36,766 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 20:56:36,766 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 20:56:36,767 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 20:56:36,767 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 20:56:36,768 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 20:56:36,768 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 20:56:36,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:56:36,768 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 20:56:36,769 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 20:56:36,769 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 20:56:36,769 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 20:56:36,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 20:56:36,769 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 20:56:36,770 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 20:56:36,770 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 20:56:36,770 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 20:56:36,770 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 20:56:36,771 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 20:56:37,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 20:56:37,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 20:56:37,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 20:56:37,030 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 20:56:37,030 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 20:56:37,031 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_power.oepc-thin000_power.oepc.i [2024-06-27 20:56:38,248 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 20:56:38,464 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 20:56:38,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_power.oepc-thin000_power.oepc.i [2024-06-27 20:56:38,489 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99bc7ce77/240bc2e9c1ba49b583623148fcadc102/FLAGa5224cde1 [2024-06-27 20:56:38,502 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99bc7ce77/240bc2e9c1ba49b583623148fcadc102 [2024-06-27 20:56:38,504 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 20:56:38,505 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 20:56:38,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe006_power.oepc-thin000_power.oepc.yml/witness.yml [2024-06-27 20:56:38,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 20:56:38,716 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 20:56:38,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 20:56:38,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 20:56:38,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 20:56:38,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:56:38" (1/2) ... [2024-06-27 20:56:38,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c1bd653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:56:38, skipping insertion in model container [2024-06-27 20:56:38,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:56:38" (1/2) ... [2024-06-27 20:56:38,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@266f2156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:56:38, skipping insertion in model container [2024-06-27 20:56:38,727 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:56:38" (2/2) ... [2024-06-27 20:56:38,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c1bd653 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:56:38, skipping insertion in model container [2024-06-27 20:56:38,728 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:56:38" (2/2) ... [2024-06-27 20:56:38,728 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 20:56:38,836 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 20:56:38,838 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] (((((((((((((((((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0) [2024-06-27 20:56:38,838 INFO L97 edCorrectnessWitness]: Location invariant before [L817-L817] (((((((((((((((((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0) [2024-06-27 20:56:38,838 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 20:56:38,838 INFO L106 edCorrectnessWitness]: ghost_update [L814-L814] multithreaded = 1; [2024-06-27 20:56:38,885 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 20:56:39,238 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:56:39,251 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 20:56:39,395 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:56:39,438 INFO L206 MainTranslator]: Completed translation [2024-06-27 20:56:39,439 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:56:39 WrapperNode [2024-06-27 20:56:39,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 20:56:39,440 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 20:56:39,440 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 20:56:39,440 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 20:56:39,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:56:39" (1/1) ... [2024-06-27 20:56:39,477 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:56:39" (1/1) ... [2024-06-27 20:56:39,528 INFO L138 Inliner]: procedures = 174, calls = 57, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2024-06-27 20:56:39,529 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 20:56:39,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 20:56:39,530 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 20:56:39,530 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 20:56:39,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:56:39" (1/1) ... [2024-06-27 20:56:39,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:56:39" (1/1) ... [2024-06-27 20:56:39,546 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:56:39" (1/1) ... [2024-06-27 20:56:39,562 INFO L175 MemorySlicer]: Split 25 memory accesses to 2 slices as follows [2, 23]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-27 20:56:39,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:56:39" (1/1) ... [2024-06-27 20:56:39,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:56:39" (1/1) ... [2024-06-27 20:56:39,574 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:56:39" (1/1) ... [2024-06-27 20:56:39,576 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:56:39" (1/1) ... [2024-06-27 20:56:39,579 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:56:39" (1/1) ... [2024-06-27 20:56:39,580 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:56:39" (1/1) ... [2024-06-27 20:56:39,585 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 20:56:39,586 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 20:56:39,586 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 20:56:39,586 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 20:56:39,587 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:56:39" (1/1) ... [2024-06-27 20:56:39,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:56:39,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 20:56:39,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 20:56:39,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 20:56:39,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 20:56:39,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 20:56:39,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 20:56:39,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 20:56:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 20:56:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 20:56:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 20:56:39,673 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 20:56:39,673 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 20:56:39,674 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 20:56:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 20:56:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 20:56:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 20:56:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 20:56:39,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 20:56:39,677 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 20:56:39,861 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 20:56:39,863 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 20:56:40,265 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 20:56:40,265 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 20:56:40,607 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 20:56:40,608 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 20:56:40,608 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:56:40 BoogieIcfgContainer [2024-06-27 20:56:40,608 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 20:56:40,610 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 20:56:40,610 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 20:56:40,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 20:56:40,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 08:56:38" (1/4) ... [2024-06-27 20:56:40,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8b3c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:56:40, skipping insertion in model container [2024-06-27 20:56:40,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:56:38" (2/4) ... [2024-06-27 20:56:40,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8b3c4a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:56:40, skipping insertion in model container [2024-06-27 20:56:40,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:56:39" (3/4) ... [2024-06-27 20:56:40,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8b3c4a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:56:40, skipping insertion in model container [2024-06-27 20:56:40,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:56:40" (4/4) ... [2024-06-27 20:56:40,616 INFO L112 eAbstractionObserver]: Analyzing ICFG safe006_power.oepc-thin000_power.oepc.i [2024-06-27 20:56:40,632 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 20:56:40,632 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 20:56:40,632 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 20:56:40,679 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 20:56:40,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 20:56:40,738 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-27 20:56:40,739 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:56:40,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 20:56:40,741 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 20:56:40,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-27 20:56:40,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 20:56:40,765 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;@69602e5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 20:56:40,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 20:56:40,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 20:56:40,772 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 20:56:40,772 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:56:40,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:56:40,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 20:56:40,774 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)] === [2024-06-27 20:56:40,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:56:40,811 INFO L85 PathProgramCache]: Analyzing trace with hash 591385492, now seen corresponding path program 1 times [2024-06-27 20:56:40,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:56:40,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571216982] [2024-06-27 20:56:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:56:40,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:56:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:56:42,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:56:42,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:56:42,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571216982] [2024-06-27 20:56:42,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571216982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:56:42,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:56:42,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 20:56:42,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131211443] [2024-06-27 20:56:42,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:56:42,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 20:56:42,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:56:42,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 20:56:42,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 20:56:42,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:56:42,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:56:42,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:56:42,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:56:42,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:56:42,978 INFO L124 PetriNetUnfolderBase]: 113/223 cut-off events. [2024-06-27 20:56:42,978 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 20:56:42,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 223 events. 113/223 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 781 event pairs, 61 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 440. Up to 206 conditions per place. [2024-06-27 20:56:42,983 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-27 20:56:42,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 115 flow [2024-06-27 20:56:42,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 20:56:42,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 20:56:42,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2024-06-27 20:56:42,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-06-27 20:56:42,996 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 47 transitions. [2024-06-27 20:56:42,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 115 flow [2024-06-27 20:56:42,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 20:56:43,001 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-27 20:56:43,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-27 20:56:43,006 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-27 20:56:43,006 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-27 20:56:43,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:56:43,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:56:43,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:56:43,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 20:56:43,007 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)] === [2024-06-27 20:56:43,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:56:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1385959945, now seen corresponding path program 1 times [2024-06-27 20:56:43,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:56:43,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043875484] [2024-06-27 20:56:43,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:56:43,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:56:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:56:45,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:56:45,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:56:45,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043875484] [2024-06-27 20:56:45,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043875484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:56:45,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:56:45,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 20:56:45,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564856624] [2024-06-27 20:56:45,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:56:45,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 20:56:45,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:56:45,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 20:56:45,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 20:56:45,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:56:45,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-06-27 20:56:45,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:56:45,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:56:45,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:56:45,638 INFO L124 PetriNetUnfolderBase]: 110/217 cut-off events. [2024-06-27 20:56:45,639 INFO L125 PetriNetUnfolderBase]: For 44/47 co-relation queries the response was YES. [2024-06-27 20:56:45,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 217 events. 110/217 cut-off events. For 44/47 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 756 event pairs, 46 based on Foata normal form. 4/220 useless extension candidates. Maximal degree in co-relation 494. Up to 190 conditions per place. [2024-06-27 20:56:45,641 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 26 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-27 20:56:45,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 36 transitions, 161 flow [2024-06-27 20:56:45,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 20:56:45,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 20:56:45,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-06-27 20:56:45,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-27 20:56:45,643 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 61 transitions. [2024-06-27 20:56:45,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 36 transitions, 161 flow [2024-06-27 20:56:45,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 20:56:45,645 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-27 20:56:45,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-27 20:56:45,646 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-27 20:56:45,646 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-27 20:56:45,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2024-06-27 20:56:45,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:56:45,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:56:45,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 20:56:45,647 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)] === [2024-06-27 20:56:45,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:56:45,648 INFO L85 PathProgramCache]: Analyzing trace with hash 15086679, now seen corresponding path program 1 times [2024-06-27 20:56:45,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:56:45,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248235430] [2024-06-27 20:56:45,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:56:45,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:56:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:56:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:56:47,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:56:47,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248235430] [2024-06-27 20:56:47,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248235430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:56:47,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:56:47,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 20:56:47,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607195929] [2024-06-27 20:56:47,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:56:47,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 20:56:47,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:56:47,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 20:56:47,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 20:56:47,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 20:56:47,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:56:47,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:56:47,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 20:56:47,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:56:48,429 INFO L124 PetriNetUnfolderBase]: 125/242 cut-off events. [2024-06-27 20:56:48,429 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-06-27 20:56:48,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 242 events. 125/242 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 830 event pairs, 37 based on Foata normal form. 2/243 useless extension candidates. Maximal degree in co-relation 618. Up to 205 conditions per place. [2024-06-27 20:56:48,436 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 36 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2024-06-27 20:56:48,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 235 flow [2024-06-27 20:56:48,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:56:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:56:48,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-06-27 20:56:48,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2024-06-27 20:56:48,440 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 71 transitions. [2024-06-27 20:56:48,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 235 flow [2024-06-27 20:56:48,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 47 transitions, 224 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 20:56:48,444 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 137 flow [2024-06-27 20:56:48,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-06-27 20:56:48,445 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-27 20:56:48,446 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 137 flow [2024-06-27 20:56:48,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:56:48,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:56:48,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:56:48,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 20:56:48,447 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:56:48,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:56:48,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1614035308, now seen corresponding path program 1 times [2024-06-27 20:56:48,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:56:48,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584867712] [2024-06-27 20:56:48,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:56:48,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:56:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:56:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:56:51,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:56:51,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584867712] [2024-06-27 20:56:51,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584867712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:56:51,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:56:51,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:56:51,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817582694] [2024-06-27 20:56:51,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:56:51,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:56:51,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:56:51,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:56:51,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:56:51,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 20:56:51,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 137 flow. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:56:51,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:56:51,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 20:56:51,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:56:51,874 INFO L124 PetriNetUnfolderBase]: 121/234 cut-off events. [2024-06-27 20:56:51,875 INFO L125 PetriNetUnfolderBase]: For 244/244 co-relation queries the response was YES. [2024-06-27 20:56:51,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 234 events. 121/234 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 808 event pairs, 18 based on Foata normal form. 4/237 useless extension candidates. Maximal degree in co-relation 674. Up to 175 conditions per place. [2024-06-27 20:56:51,877 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 36 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-27 20:56:51,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 48 transitions, 257 flow [2024-06-27 20:56:51,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:56:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:56:51,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-27 20:56:51,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 20:56:51,879 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 137 flow. Second operand 6 states and 78 transitions. [2024-06-27 20:56:51,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 48 transitions, 257 flow [2024-06-27 20:56:51,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 257 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 20:56:51,881 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 149 flow [2024-06-27 20:56:51,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=149, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2024-06-27 20:56:51,883 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2024-06-27 20:56:51,883 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 149 flow [2024-06-27 20:56:51,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:56:51,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:56:51,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:56:51,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 20:56:51,884 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)] === [2024-06-27 20:56:51,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:56:51,885 INFO L85 PathProgramCache]: Analyzing trace with hash 852089928, now seen corresponding path program 1 times [2024-06-27 20:56:51,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:56:51,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313623920] [2024-06-27 20:56:51,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:56:51,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:56:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:56:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:56:53,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:56:53,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313623920] [2024-06-27 20:56:53,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313623920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:56:53,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:56:53,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:56:53,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323135436] [2024-06-27 20:56:53,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:56:53,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:56:53,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:56:53,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:56:53,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:56:53,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:56:53,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:56:53,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:56:53,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:56:53,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:56:54,134 INFO L124 PetriNetUnfolderBase]: 117/228 cut-off events. [2024-06-27 20:56:54,134 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2024-06-27 20:56:54,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 228 events. 117/228 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 770 event pairs, 32 based on Foata normal form. 2/229 useless extension candidates. Maximal degree in co-relation 707. Up to 204 conditions per place. [2024-06-27 20:56:54,138 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 30 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2024-06-27 20:56:54,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 245 flow [2024-06-27 20:56:54,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:56:54,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:56:54,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2024-06-27 20:56:54,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2024-06-27 20:56:54,140 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 149 flow. Second operand 5 states and 56 transitions. [2024-06-27 20:56:54,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 245 flow [2024-06-27 20:56:54,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 224 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 20:56:54,142 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 157 flow [2024-06-27 20:56:54,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2024-06-27 20:56:54,143 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2024-06-27 20:56:54,144 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 157 flow [2024-06-27 20:56:54,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:56:54,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:56:54,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:56:54,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 20:56:54,145 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)] === [2024-06-27 20:56:54,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:56:54,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1947330719, now seen corresponding path program 1 times [2024-06-27 20:56:54,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:56:54,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138972067] [2024-06-27 20:56:54,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:56:54,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:56:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:56:57,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:56:57,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:56:57,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138972067] [2024-06-27 20:56:57,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138972067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:56:57,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:56:57,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:56:57,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405081343] [2024-06-27 20:56:57,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:56:57,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:56:57,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:56:57,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:56:57,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:56:57,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:56:57,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 157 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:56:57,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:56:57,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:56:57,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:56:58,341 INFO L124 PetriNetUnfolderBase]: 120/235 cut-off events. [2024-06-27 20:56:58,341 INFO L125 PetriNetUnfolderBase]: For 434/434 co-relation queries the response was YES. [2024-06-27 20:56:58,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 235 events. 120/235 cut-off events. For 434/434 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 807 event pairs, 31 based on Foata normal form. 1/235 useless extension candidates. Maximal degree in co-relation 748. Up to 181 conditions per place. [2024-06-27 20:56:58,342 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 37 selfloop transitions, 14 changer transitions 0/54 dead transitions. [2024-06-27 20:56:58,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 54 transitions, 329 flow [2024-06-27 20:56:58,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:56:58,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:56:58,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-27 20:56:58,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904761904761905 [2024-06-27 20:56:58,347 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 157 flow. Second operand 7 states and 82 transitions. [2024-06-27 20:56:58,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 54 transitions, 329 flow [2024-06-27 20:56:58,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 316 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 20:56:58,350 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 201 flow [2024-06-27 20:56:58,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=201, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-06-27 20:56:58,351 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2024-06-27 20:56:58,351 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 201 flow [2024-06-27 20:56:58,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:56:58,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:56:58,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:56:58,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 20:56:58,352 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)] === [2024-06-27 20:56:58,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:56:58,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1657675889, now seen corresponding path program 2 times [2024-06-27 20:56:58,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:56:58,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430775556] [2024-06-27 20:56:58,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:56:58,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:56:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:01,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:01,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430775556] [2024-06-27 20:57:01,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430775556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:01,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:01,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:57:01,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747703112] [2024-06-27 20:57:01,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:01,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:57:01,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:01,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:57:01,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:57:01,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:01,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 201 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:01,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:01,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:01,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:01,890 INFO L124 PetriNetUnfolderBase]: 126/247 cut-off events. [2024-06-27 20:57:01,890 INFO L125 PetriNetUnfolderBase]: For 610/610 co-relation queries the response was YES. [2024-06-27 20:57:01,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 876 conditions, 247 events. 126/247 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 869 event pairs, 31 based on Foata normal form. 1/247 useless extension candidates. Maximal degree in co-relation 853. Up to 205 conditions per place. [2024-06-27 20:57:01,893 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 37 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-06-27 20:57:01,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 357 flow [2024-06-27 20:57:01,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:57:01,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:57:01,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-06-27 20:57:01,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619047619047619 [2024-06-27 20:57:01,894 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 201 flow. Second operand 7 states and 76 transitions. [2024-06-27 20:57:01,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 357 flow [2024-06-27 20:57:01,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 53 transitions, 338 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 20:57:01,897 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 245 flow [2024-06-27 20:57:01,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-06-27 20:57:01,898 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2024-06-27 20:57:01,899 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 245 flow [2024-06-27 20:57:01,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:01,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:01,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:01,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 20:57:01,899 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)] === [2024-06-27 20:57:01,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:01,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1657675703, now seen corresponding path program 1 times [2024-06-27 20:57:01,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:01,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56659157] [2024-06-27 20:57:01,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:01,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:04,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:04,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:04,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56659157] [2024-06-27 20:57:04,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56659157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:04,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:04,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:57:04,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171441396] [2024-06-27 20:57:04,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:04,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:57:04,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:04,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:57:04,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:57:04,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:04,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 245 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:04,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:04,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:04,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:05,461 INFO L124 PetriNetUnfolderBase]: 142/273 cut-off events. [2024-06-27 20:57:05,461 INFO L125 PetriNetUnfolderBase]: For 849/849 co-relation queries the response was YES. [2024-06-27 20:57:05,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 273 events. 142/273 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 977 event pairs, 33 based on Foata normal form. 2/274 useless extension candidates. Maximal degree in co-relation 981. Up to 219 conditions per place. [2024-06-27 20:57:05,464 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 43 selfloop transitions, 15 changer transitions 0/61 dead transitions. [2024-06-27 20:57:05,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 427 flow [2024-06-27 20:57:05,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:57:05,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:57:05,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 20:57:05,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-27 20:57:05,469 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 245 flow. Second operand 8 states and 87 transitions. [2024-06-27 20:57:05,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 427 flow [2024-06-27 20:57:05,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 398 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 20:57:05,474 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 271 flow [2024-06-27 20:57:05,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=271, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-06-27 20:57:05,476 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2024-06-27 20:57:05,477 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 271 flow [2024-06-27 20:57:05,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:05,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:05,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:05,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 20:57:05,477 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)] === [2024-06-27 20:57:05,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:05,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1925381051, now seen corresponding path program 2 times [2024-06-27 20:57:05,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:05,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114251389] [2024-06-27 20:57:05,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:05,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:07,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:07,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:07,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114251389] [2024-06-27 20:57:07,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114251389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:07,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:07,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:57:07,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107155135] [2024-06-27 20:57:07,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:07,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:57:07,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:07,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:57:07,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:57:07,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:07,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 271 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:07,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:07,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:07,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:08,319 INFO L124 PetriNetUnfolderBase]: 138/268 cut-off events. [2024-06-27 20:57:08,319 INFO L125 PetriNetUnfolderBase]: For 1056/1059 co-relation queries the response was YES. [2024-06-27 20:57:08,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 268 events. 138/268 cut-off events. For 1056/1059 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 961 event pairs, 37 based on Foata normal form. 4/270 useless extension candidates. Maximal degree in co-relation 1008. Up to 199 conditions per place. [2024-06-27 20:57:08,321 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 38 selfloop transitions, 16 changer transitions 0/57 dead transitions. [2024-06-27 20:57:08,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 429 flow [2024-06-27 20:57:08,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:57:08,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:57:08,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-06-27 20:57:08,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-27 20:57:08,323 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 271 flow. Second operand 6 states and 68 transitions. [2024-06-27 20:57:08,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 429 flow [2024-06-27 20:57:08,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 410 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 20:57:08,326 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 305 flow [2024-06-27 20:57:08,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-06-27 20:57:08,327 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-27 20:57:08,327 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 305 flow [2024-06-27 20:57:08,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:08,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:08,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:08,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 20:57:08,328 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)] === [2024-06-27 20:57:08,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:08,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1925618201, now seen corresponding path program 3 times [2024-06-27 20:57:08,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:08,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393063114] [2024-06-27 20:57:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:08,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:10,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:10,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393063114] [2024-06-27 20:57:10,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393063114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:10,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:10,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:57:10,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965510736] [2024-06-27 20:57:10,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:10,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:57:10,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:10,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:57:10,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:57:10,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:10,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 305 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:10,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:10,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:10,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:10,956 INFO L124 PetriNetUnfolderBase]: 134/261 cut-off events. [2024-06-27 20:57:10,957 INFO L125 PetriNetUnfolderBase]: For 1104/1104 co-relation queries the response was YES. [2024-06-27 20:57:10,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1065 conditions, 261 events. 134/261 cut-off events. For 1104/1104 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 923 event pairs, 31 based on Foata normal form. 2/262 useless extension candidates. Maximal degree in co-relation 1037. Up to 210 conditions per place. [2024-06-27 20:57:10,958 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 42 selfloop transitions, 14 changer transitions 0/59 dead transitions. [2024-06-27 20:57:10,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 445 flow [2024-06-27 20:57:10,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:57:10,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:57:10,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-27 20:57:10,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 20:57:10,960 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 305 flow. Second operand 6 states and 69 transitions. [2024-06-27 20:57:10,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 445 flow [2024-06-27 20:57:10,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 404 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 20:57:10,966 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 300 flow [2024-06-27 20:57:10,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-06-27 20:57:10,967 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-06-27 20:57:10,968 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 300 flow [2024-06-27 20:57:10,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:10,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:10,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:10,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 20:57:10,969 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)] === [2024-06-27 20:57:10,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:10,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1925618387, now seen corresponding path program 3 times [2024-06-27 20:57:10,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:10,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370269407] [2024-06-27 20:57:10,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:10,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:13,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:13,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370269407] [2024-06-27 20:57:13,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370269407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:13,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:13,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:57:13,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453313699] [2024-06-27 20:57:13,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:13,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:57:13,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:13,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:57:13,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:57:13,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:13,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 300 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:13,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:13,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:13,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:14,085 INFO L124 PetriNetUnfolderBase]: 132/258 cut-off events. [2024-06-27 20:57:14,085 INFO L125 PetriNetUnfolderBase]: For 1195/1195 co-relation queries the response was YES. [2024-06-27 20:57:14,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 258 events. 132/258 cut-off events. For 1195/1195 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 916 event pairs, 31 based on Foata normal form. 1/258 useless extension candidates. Maximal degree in co-relation 1027. Up to 202 conditions per place. [2024-06-27 20:57:14,087 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 43 selfloop transitions, 16 changer transitions 0/62 dead transitions. [2024-06-27 20:57:14,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 454 flow [2024-06-27 20:57:14,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:57:14,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:57:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-06-27 20:57:14,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-06-27 20:57:14,089 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 300 flow. Second operand 6 states and 73 transitions. [2024-06-27 20:57:14,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 454 flow [2024-06-27 20:57:14,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 417 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 20:57:14,093 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 306 flow [2024-06-27 20:57:14,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-06-27 20:57:14,094 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-06-27 20:57:14,094 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 306 flow [2024-06-27 20:57:14,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:14,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:14,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:14,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 20:57:14,095 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)] === [2024-06-27 20:57:14,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:14,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1925372123, now seen corresponding path program 1 times [2024-06-27 20:57:14,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:14,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110757701] [2024-06-27 20:57:14,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:14,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:16,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:16,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:16,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110757701] [2024-06-27 20:57:16,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110757701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:16,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:16,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:57:16,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201682758] [2024-06-27 20:57:16,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:16,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:57:16,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:16,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:57:16,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:57:16,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:16,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 306 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:16,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:16,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:16,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:16,965 INFO L124 PetriNetUnfolderBase]: 129/253 cut-off events. [2024-06-27 20:57:16,965 INFO L125 PetriNetUnfolderBase]: For 1192/1192 co-relation queries the response was YES. [2024-06-27 20:57:16,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1032 conditions, 253 events. 129/253 cut-off events. For 1192/1192 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 880 event pairs, 28 based on Foata normal form. 2/254 useless extension candidates. Maximal degree in co-relation 1003. Up to 219 conditions per place. [2024-06-27 20:57:16,968 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 45 selfloop transitions, 8 changer transitions 0/56 dead transitions. [2024-06-27 20:57:16,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 432 flow [2024-06-27 20:57:16,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:57:16,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:57:16,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-06-27 20:57:16,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 20:57:16,970 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 306 flow. Second operand 6 states and 63 transitions. [2024-06-27 20:57:16,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 432 flow [2024-06-27 20:57:16,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 56 transitions, 398 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 20:57:16,974 INFO L231 Difference]: Finished difference. Result has 60 places, 47 transitions, 292 flow [2024-06-27 20:57:16,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2024-06-27 20:57:16,975 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-27 20:57:16,975 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 292 flow [2024-06-27 20:57:16,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:16,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:16,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:16,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 20:57:16,976 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)] === [2024-06-27 20:57:16,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:16,976 INFO L85 PathProgramCache]: Analyzing trace with hash 147936973, now seen corresponding path program 1 times [2024-06-27 20:57:16,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:16,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600996500] [2024-06-27 20:57:16,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:16,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:19,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:19,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:19,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600996500] [2024-06-27 20:57:19,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600996500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:19,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:19,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:57:19,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914408959] [2024-06-27 20:57:19,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:19,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:57:19,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:19,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:57:19,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:57:19,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:19,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 292 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:19,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:19,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:19,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:20,261 INFO L124 PetriNetUnfolderBase]: 145/283 cut-off events. [2024-06-27 20:57:20,262 INFO L125 PetriNetUnfolderBase]: For 1280/1280 co-relation queries the response was YES. [2024-06-27 20:57:20,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 283 events. 145/283 cut-off events. For 1280/1280 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1032 event pairs, 32 based on Foata normal form. 2/284 useless extension candidates. Maximal degree in co-relation 1098. Up to 183 conditions per place. [2024-06-27 20:57:20,264 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 45 selfloop transitions, 26 changer transitions 0/74 dead transitions. [2024-06-27 20:57:20,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 74 transitions, 534 flow [2024-06-27 20:57:20,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:57:20,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:57:20,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:57:20,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-27 20:57:20,266 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 292 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:57:20,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 74 transitions, 534 flow [2024-06-27 20:57:20,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 516 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 20:57:20,270 INFO L231 Difference]: Finished difference. Result has 66 places, 51 transitions, 363 flow [2024-06-27 20:57:20,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=363, PETRI_PLACES=66, PETRI_TRANSITIONS=51} [2024-06-27 20:57:20,271 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2024-06-27 20:57:20,271 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 51 transitions, 363 flow [2024-06-27 20:57:20,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:20,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:20,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:20,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 20:57:20,272 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)] === [2024-06-27 20:57:20,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:20,273 INFO L85 PathProgramCache]: Analyzing trace with hash 151656043, now seen corresponding path program 2 times [2024-06-27 20:57:20,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:20,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237365800] [2024-06-27 20:57:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:20,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:22,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:22,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237365800] [2024-06-27 20:57:22,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237365800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:22,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:22,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:57:22,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542676474] [2024-06-27 20:57:22,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:22,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:57:22,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:22,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:57:22,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:57:22,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:22,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 51 transitions, 363 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:22,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:22,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:22,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:23,488 INFO L124 PetriNetUnfolderBase]: 161/315 cut-off events. [2024-06-27 20:57:23,488 INFO L125 PetriNetUnfolderBase]: For 1775/1775 co-relation queries the response was YES. [2024-06-27 20:57:23,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 315 events. 161/315 cut-off events. For 1775/1775 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1220 event pairs, 32 based on Foata normal form. 2/316 useless extension candidates. Maximal degree in co-relation 1318. Up to 234 conditions per place. [2024-06-27 20:57:23,490 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 51 selfloop transitions, 21 changer transitions 0/75 dead transitions. [2024-06-27 20:57:23,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 75 transitions, 609 flow [2024-06-27 20:57:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:57:23,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:57:23,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 20:57:23,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-27 20:57:23,492 INFO L175 Difference]: Start difference. First operand has 66 places, 51 transitions, 363 flow. Second operand 10 states and 106 transitions. [2024-06-27 20:57:23,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 75 transitions, 609 flow [2024-06-27 20:57:23,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 556 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 20:57:23,495 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 397 flow [2024-06-27 20:57:23,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=397, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-06-27 20:57:23,496 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-27 20:57:23,496 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 397 flow [2024-06-27 20:57:23,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:23,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:23,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:23,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 20:57:23,497 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)] === [2024-06-27 20:57:23,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:23,497 INFO L85 PathProgramCache]: Analyzing trace with hash 151661623, now seen corresponding path program 3 times [2024-06-27 20:57:23,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:23,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304217356] [2024-06-27 20:57:23,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:23,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:25,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:25,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304217356] [2024-06-27 20:57:25,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304217356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:25,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:25,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:57:25,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665839305] [2024-06-27 20:57:25,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:25,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:57:25,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:25,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:57:25,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:57:25,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:25,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 397 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:25,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:25,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:25,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:26,575 INFO L124 PetriNetUnfolderBase]: 157/309 cut-off events. [2024-06-27 20:57:26,575 INFO L125 PetriNetUnfolderBase]: For 1825/1825 co-relation queries the response was YES. [2024-06-27 20:57:26,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 309 events. 157/309 cut-off events. For 1825/1825 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1182 event pairs, 32 based on Foata normal form. 2/310 useless extension candidates. Maximal degree in co-relation 1302. Up to 231 conditions per place. [2024-06-27 20:57:26,578 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 51 selfloop transitions, 21 changer transitions 0/75 dead transitions. [2024-06-27 20:57:26,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 75 transitions, 585 flow [2024-06-27 20:57:26,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:57:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:57:26,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-27 20:57:26,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-27 20:57:26,580 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 397 flow. Second operand 11 states and 112 transitions. [2024-06-27 20:57:26,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 75 transitions, 585 flow [2024-06-27 20:57:26,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 75 transitions, 552 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 20:57:26,585 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 411 flow [2024-06-27 20:57:26,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=411, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2024-06-27 20:57:26,586 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-27 20:57:26,586 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 411 flow [2024-06-27 20:57:26,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:26,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:26,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:26,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 20:57:26,587 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)] === [2024-06-27 20:57:26,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:26,588 INFO L85 PathProgramCache]: Analyzing trace with hash 657023817, now seen corresponding path program 4 times [2024-06-27 20:57:26,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:26,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382424005] [2024-06-27 20:57:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:26,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:28,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:28,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382424005] [2024-06-27 20:57:28,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382424005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:28,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:28,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:57:28,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611199946] [2024-06-27 20:57:28,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:28,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:57:28,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:28,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:57:28,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:57:28,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:28,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 411 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:28,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:28,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:28,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:29,598 INFO L124 PetriNetUnfolderBase]: 163/321 cut-off events. [2024-06-27 20:57:29,599 INFO L125 PetriNetUnfolderBase]: For 2094/2094 co-relation queries the response was YES. [2024-06-27 20:57:29,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1427 conditions, 321 events. 163/321 cut-off events. For 2094/2094 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1254 event pairs, 32 based on Foata normal form. 2/322 useless extension candidates. Maximal degree in co-relation 1392. Up to 210 conditions per place. [2024-06-27 20:57:29,601 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 46 selfloop transitions, 28 changer transitions 0/77 dead transitions. [2024-06-27 20:57:29,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 77 transitions, 649 flow [2024-06-27 20:57:29,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:57:29,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:57:29,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-27 20:57:29,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-27 20:57:29,603 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 411 flow. Second operand 8 states and 93 transitions. [2024-06-27 20:57:29,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 77 transitions, 649 flow [2024-06-27 20:57:29,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 77 transitions, 604 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 20:57:29,609 INFO L231 Difference]: Finished difference. Result has 73 places, 57 transitions, 448 flow [2024-06-27 20:57:29,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=448, PETRI_PLACES=73, PETRI_TRANSITIONS=57} [2024-06-27 20:57:29,610 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2024-06-27 20:57:29,610 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 57 transitions, 448 flow [2024-06-27 20:57:29,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:29,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:29,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:29,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 20:57:29,611 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)] === [2024-06-27 20:57:29,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:29,611 INFO L85 PathProgramCache]: Analyzing trace with hash 435373197, now seen corresponding path program 5 times [2024-06-27 20:57:29,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:29,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147368989] [2024-06-27 20:57:29,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:29,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:31,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:31,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:31,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147368989] [2024-06-27 20:57:31,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147368989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:31,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:31,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:57:31,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293135195] [2024-06-27 20:57:31,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:31,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:57:31,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:31,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:57:31,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:57:31,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:31,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 57 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:31,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:31,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:31,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:32,774 INFO L124 PetriNetUnfolderBase]: 159/315 cut-off events. [2024-06-27 20:57:32,774 INFO L125 PetriNetUnfolderBase]: For 2250/2250 co-relation queries the response was YES. [2024-06-27 20:57:32,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1428 conditions, 315 events. 159/315 cut-off events. For 2250/2250 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1229 event pairs, 31 based on Foata normal form. 2/316 useless extension candidates. Maximal degree in co-relation 1392. Up to 207 conditions per place. [2024-06-27 20:57:32,777 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 47 selfloop transitions, 28 changer transitions 0/78 dead transitions. [2024-06-27 20:57:32,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 78 transitions, 646 flow [2024-06-27 20:57:32,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:57:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:57:32,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 20:57:32,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-27 20:57:32,779 INFO L175 Difference]: Start difference. First operand has 73 places, 57 transitions, 448 flow. Second operand 9 states and 100 transitions. [2024-06-27 20:57:32,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 78 transitions, 646 flow [2024-06-27 20:57:32,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 591 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 20:57:32,784 INFO L231 Difference]: Finished difference. Result has 76 places, 57 transitions, 457 flow [2024-06-27 20:57:32,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=457, PETRI_PLACES=76, PETRI_TRANSITIONS=57} [2024-06-27 20:57:32,785 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2024-06-27 20:57:32,785 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 57 transitions, 457 flow [2024-06-27 20:57:32,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:32,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:32,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:32,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 20:57:32,786 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)] === [2024-06-27 20:57:32,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:32,786 INFO L85 PathProgramCache]: Analyzing trace with hash 442730427, now seen corresponding path program 6 times [2024-06-27 20:57:32,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:32,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986663361] [2024-06-27 20:57:32,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:32,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:35,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:35,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986663361] [2024-06-27 20:57:35,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986663361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:35,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:35,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:57:35,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552786892] [2024-06-27 20:57:35,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:35,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:57:35,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:35,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:57:35,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:57:35,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:35,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 57 transitions, 457 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:35,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:35,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:35,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:36,078 INFO L124 PetriNetUnfolderBase]: 155/310 cut-off events. [2024-06-27 20:57:36,079 INFO L125 PetriNetUnfolderBase]: For 2171/2174 co-relation queries the response was YES. [2024-06-27 20:57:36,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 310 events. 155/310 cut-off events. For 2171/2174 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1209 event pairs, 33 based on Foata normal form. 4/312 useless extension candidates. Maximal degree in co-relation 1349. Up to 179 conditions per place. [2024-06-27 20:57:36,081 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 42 selfloop transitions, 32 changer transitions 0/77 dead transitions. [2024-06-27 20:57:36,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 77 transitions, 663 flow [2024-06-27 20:57:36,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:57:36,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:57:36,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 20:57:36,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-27 20:57:36,083 INFO L175 Difference]: Start difference. First operand has 76 places, 57 transitions, 457 flow. Second operand 9 states and 98 transitions. [2024-06-27 20:57:36,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 77 transitions, 663 flow [2024-06-27 20:57:36,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 584 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 20:57:36,088 INFO L231 Difference]: Finished difference. Result has 75 places, 59 transitions, 469 flow [2024-06-27 20:57:36,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=469, PETRI_PLACES=75, PETRI_TRANSITIONS=59} [2024-06-27 20:57:36,089 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-27 20:57:36,089 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 59 transitions, 469 flow [2024-06-27 20:57:36,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:36,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:36,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:36,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 20:57:36,090 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)] === [2024-06-27 20:57:36,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:36,091 INFO L85 PathProgramCache]: Analyzing trace with hash 413055178, now seen corresponding path program 1 times [2024-06-27 20:57:36,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:36,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491096303] [2024-06-27 20:57:36,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:36,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:37,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:37,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491096303] [2024-06-27 20:57:37,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491096303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:37,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:37,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:57:37,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403049822] [2024-06-27 20:57:37,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:37,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:57:37,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:37,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:57:37,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:57:37,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:37,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 59 transitions, 469 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:37,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:37,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:37,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:38,610 INFO L124 PetriNetUnfolderBase]: 199/399 cut-off events. [2024-06-27 20:57:38,611 INFO L125 PetriNetUnfolderBase]: For 2452/2454 co-relation queries the response was YES. [2024-06-27 20:57:38,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1796 conditions, 399 events. 199/399 cut-off events. For 2452/2454 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1731 event pairs, 37 based on Foata normal form. 4/402 useless extension candidates. Maximal degree in co-relation 1760. Up to 262 conditions per place. [2024-06-27 20:57:38,617 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 67 selfloop transitions, 29 changer transitions 0/99 dead transitions. [2024-06-27 20:57:38,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 99 transitions, 898 flow [2024-06-27 20:57:38,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:57:38,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:57:38,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 20:57:38,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3851851851851852 [2024-06-27 20:57:38,619 INFO L175 Difference]: Start difference. First operand has 75 places, 59 transitions, 469 flow. Second operand 9 states and 104 transitions. [2024-06-27 20:57:38,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 99 transitions, 898 flow [2024-06-27 20:57:38,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 99 transitions, 805 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 20:57:38,628 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 605 flow [2024-06-27 20:57:38,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=605, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2024-06-27 20:57:38,629 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2024-06-27 20:57:38,629 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 605 flow [2024-06-27 20:57:38,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:38,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:38,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:38,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 20:57:38,630 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)] === [2024-06-27 20:57:38,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:38,630 INFO L85 PathProgramCache]: Analyzing trace with hash 288218028, now seen corresponding path program 2 times [2024-06-27 20:57:38,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:38,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284399245] [2024-06-27 20:57:38,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:38,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:41,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:41,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284399245] [2024-06-27 20:57:41,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284399245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:41,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:41,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:57:41,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910231499] [2024-06-27 20:57:41,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:41,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:57:41,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:41,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:57:41,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:57:41,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:41,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 605 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:41,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:41,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:41,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:41,674 INFO L124 PetriNetUnfolderBase]: 203/407 cut-off events. [2024-06-27 20:57:41,674 INFO L125 PetriNetUnfolderBase]: For 2781/2783 co-relation queries the response was YES. [2024-06-27 20:57:41,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 407 events. 203/407 cut-off events. For 2781/2783 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1780 event pairs, 21 based on Foata normal form. 4/410 useless extension candidates. Maximal degree in co-relation 1833. Up to 221 conditions per place. [2024-06-27 20:57:41,678 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 57 selfloop transitions, 34 changer transitions 0/94 dead transitions. [2024-06-27 20:57:41,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 94 transitions, 877 flow [2024-06-27 20:57:41,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:57:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:57:41,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-27 20:57:41,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-27 20:57:41,679 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 605 flow. Second operand 8 states and 89 transitions. [2024-06-27 20:57:41,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 94 transitions, 877 flow [2024-06-27 20:57:41,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 94 transitions, 863 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 20:57:41,687 INFO L231 Difference]: Finished difference. Result has 86 places, 75 transitions, 675 flow [2024-06-27 20:57:41,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=675, PETRI_PLACES=86, PETRI_TRANSITIONS=75} [2024-06-27 20:57:41,688 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2024-06-27 20:57:41,688 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 675 flow [2024-06-27 20:57:41,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:41,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:41,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:41,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 20:57:41,689 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)] === [2024-06-27 20:57:41,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:41,689 INFO L85 PathProgramCache]: Analyzing trace with hash 288278478, now seen corresponding path program 3 times [2024-06-27 20:57:41,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:41,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64778415] [2024-06-27 20:57:41,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:41,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:44,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:44,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64778415] [2024-06-27 20:57:44,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64778415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:44,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:44,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:57:44,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710592421] [2024-06-27 20:57:44,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:44,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:57:44,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:44,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:57:44,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:57:44,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:44,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 675 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:44,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:44,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:44,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:45,067 INFO L124 PetriNetUnfolderBase]: 211/423 cut-off events. [2024-06-27 20:57:45,067 INFO L125 PetriNetUnfolderBase]: For 3573/3575 co-relation queries the response was YES. [2024-06-27 20:57:45,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2051 conditions, 423 events. 211/423 cut-off events. For 3573/3575 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1885 event pairs, 36 based on Foata normal form. 6/428 useless extension candidates. Maximal degree in co-relation 2009. Up to 305 conditions per place. [2024-06-27 20:57:45,071 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 60 selfloop transitions, 31 changer transitions 0/94 dead transitions. [2024-06-27 20:57:45,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 94 transitions, 926 flow [2024-06-27 20:57:45,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:57:45,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:57:45,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-27 20:57:45,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-27 20:57:45,073 INFO L175 Difference]: Start difference. First operand has 86 places, 75 transitions, 675 flow. Second operand 8 states and 89 transitions. [2024-06-27 20:57:45,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 94 transitions, 926 flow [2024-06-27 20:57:45,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 94 transitions, 859 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 20:57:45,081 INFO L231 Difference]: Finished difference. Result has 88 places, 77 transitions, 704 flow [2024-06-27 20:57:45,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=704, PETRI_PLACES=88, PETRI_TRANSITIONS=77} [2024-06-27 20:57:45,082 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2024-06-27 20:57:45,082 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 704 flow [2024-06-27 20:57:45,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:45,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:45,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:45,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 20:57:45,083 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)] === [2024-06-27 20:57:45,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:45,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1551552520, now seen corresponding path program 4 times [2024-06-27 20:57:45,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:45,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048562322] [2024-06-27 20:57:45,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:45,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:47,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:47,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:47,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048562322] [2024-06-27 20:57:47,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048562322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:47,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:47,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:57:47,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142414845] [2024-06-27 20:57:47,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:47,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:57:47,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:47,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:57:47,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:57:47,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:47,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 704 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:47,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:47,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:47,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:48,172 INFO L124 PetriNetUnfolderBase]: 212/426 cut-off events. [2024-06-27 20:57:48,172 INFO L125 PetriNetUnfolderBase]: For 3388/3390 co-relation queries the response was YES. [2024-06-27 20:57:48,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 426 events. 212/426 cut-off events. For 3388/3390 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1918 event pairs, 35 based on Foata normal form. 6/431 useless extension candidates. Maximal degree in co-relation 1995. Up to 343 conditions per place. [2024-06-27 20:57:48,176 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 69 selfloop transitions, 20 changer transitions 0/92 dead transitions. [2024-06-27 20:57:48,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 92 transitions, 931 flow [2024-06-27 20:57:48,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:57:48,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:57:48,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-27 20:57:48,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 20:57:48,179 INFO L175 Difference]: Start difference. First operand has 88 places, 77 transitions, 704 flow. Second operand 8 states and 84 transitions. [2024-06-27 20:57:48,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 92 transitions, 931 flow [2024-06-27 20:57:48,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 92 transitions, 840 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 20:57:48,188 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 672 flow [2024-06-27 20:57:48,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=672, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2024-06-27 20:57:48,189 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2024-06-27 20:57:48,189 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 672 flow [2024-06-27 20:57:48,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:48,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:48,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:48,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 20:57:48,190 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)] === [2024-06-27 20:57:48,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:48,190 INFO L85 PathProgramCache]: Analyzing trace with hash 54247600, now seen corresponding path program 1 times [2024-06-27 20:57:48,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:48,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195415556] [2024-06-27 20:57:48,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:48,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:51,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:51,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195415556] [2024-06-27 20:57:51,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195415556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:51,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:51,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:57:51,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104496723] [2024-06-27 20:57:51,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:51,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:57:51,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:51,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:57:51,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:57:51,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:51,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 672 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:51,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:51,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:51,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:51,957 INFO L124 PetriNetUnfolderBase]: 216/430 cut-off events. [2024-06-27 20:57:51,958 INFO L125 PetriNetUnfolderBase]: For 3260/3262 co-relation queries the response was YES. [2024-06-27 20:57:51,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1987 conditions, 430 events. 216/430 cut-off events. For 3260/3262 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1939 event pairs, 31 based on Foata normal form. 4/433 useless extension candidates. Maximal degree in co-relation 1945. Up to 349 conditions per place. [2024-06-27 20:57:51,962 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 74 selfloop transitions, 19 changer transitions 0/96 dead transitions. [2024-06-27 20:57:51,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 96 transitions, 910 flow [2024-06-27 20:57:51,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:57:51,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:57:51,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-27 20:57:51,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-27 20:57:51,964 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 672 flow. Second operand 9 states and 94 transitions. [2024-06-27 20:57:51,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 96 transitions, 910 flow [2024-06-27 20:57:51,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 96 transitions, 866 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 20:57:51,972 INFO L231 Difference]: Finished difference. Result has 92 places, 79 transitions, 680 flow [2024-06-27 20:57:51,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=680, PETRI_PLACES=92, PETRI_TRANSITIONS=79} [2024-06-27 20:57:51,973 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 63 predicate places. [2024-06-27 20:57:51,973 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 79 transitions, 680 flow [2024-06-27 20:57:51,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:51,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:51,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:51,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 20:57:51,974 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)] === [2024-06-27 20:57:51,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:51,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1107275012, now seen corresponding path program 5 times [2024-06-27 20:57:51,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:51,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796572871] [2024-06-27 20:57:51,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:51,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:54,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:54,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796572871] [2024-06-27 20:57:54,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796572871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:54,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:54,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:57:54,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848241584] [2024-06-27 20:57:54,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:54,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:57:54,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:57:54,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:57:54,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:54,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 79 transitions, 680 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:54,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:54,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:54,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:55,064 INFO L124 PetriNetUnfolderBase]: 213/429 cut-off events. [2024-06-27 20:57:55,064 INFO L125 PetriNetUnfolderBase]: For 3179/3181 co-relation queries the response was YES. [2024-06-27 20:57:55,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 429 events. 213/429 cut-off events. For 3179/3181 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1930 event pairs, 18 based on Foata normal form. 4/432 useless extension candidates. Maximal degree in co-relation 1905. Up to 276 conditions per place. [2024-06-27 20:57:55,067 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 64 selfloop transitions, 28 changer transitions 0/95 dead transitions. [2024-06-27 20:57:55,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 95 transitions, 908 flow [2024-06-27 20:57:55,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:57:55,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:57:55,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-27 20:57:55,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-06-27 20:57:55,069 INFO L175 Difference]: Start difference. First operand has 92 places, 79 transitions, 680 flow. Second operand 7 states and 81 transitions. [2024-06-27 20:57:55,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 95 transitions, 908 flow [2024-06-27 20:57:55,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 95 transitions, 862 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 20:57:55,075 INFO L231 Difference]: Finished difference. Result has 92 places, 79 transitions, 703 flow [2024-06-27 20:57:55,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=703, PETRI_PLACES=92, PETRI_TRANSITIONS=79} [2024-06-27 20:57:55,076 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 63 predicate places. [2024-06-27 20:57:55,076 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 79 transitions, 703 flow [2024-06-27 20:57:55,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:55,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:55,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:55,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 20:57:55,077 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)] === [2024-06-27 20:57:55,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:55,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1107090314, now seen corresponding path program 2 times [2024-06-27 20:57:55,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:55,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48132658] [2024-06-27 20:57:55,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:55,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:57:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:57:57,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:57:57,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48132658] [2024-06-27 20:57:57,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48132658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:57:57,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:57:57,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:57:57,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955617160] [2024-06-27 20:57:57,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:57:57,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:57:57,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:57:57,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:57:57,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:57:57,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:57:57,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 79 transitions, 703 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:57,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:57:57,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:57:57,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:57:58,330 INFO L124 PetriNetUnfolderBase]: 217/433 cut-off events. [2024-06-27 20:57:58,330 INFO L125 PetriNetUnfolderBase]: For 3717/3719 co-relation queries the response was YES. [2024-06-27 20:57:58,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 433 events. 217/433 cut-off events. For 3717/3719 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1964 event pairs, 31 based on Foata normal form. 4/436 useless extension candidates. Maximal degree in co-relation 1979. Up to 346 conditions per place. [2024-06-27 20:57:58,334 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 72 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2024-06-27 20:57:58,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 94 transitions, 933 flow [2024-06-27 20:57:58,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:57:58,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:57:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-27 20:57:58,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 20:57:58,336 INFO L175 Difference]: Start difference. First operand has 92 places, 79 transitions, 703 flow. Second operand 7 states and 77 transitions. [2024-06-27 20:57:58,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 94 transitions, 933 flow [2024-06-27 20:57:58,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 94 transitions, 861 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 20:57:58,345 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 687 flow [2024-06-27 20:57:58,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=687, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-06-27 20:57:58,345 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 63 predicate places. [2024-06-27 20:57:58,346 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 687 flow [2024-06-27 20:57:58,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:57:58,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:57:58,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:57:58,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 20:57:58,346 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)] === [2024-06-27 20:57:58,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:57:58,347 INFO L85 PathProgramCache]: Analyzing trace with hash 848023398, now seen corresponding path program 3 times [2024-06-27 20:57:58,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:57:58,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261613005] [2024-06-27 20:57:58,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:57:58,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:57:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:01,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:01,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:01,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261613005] [2024-06-27 20:58:01,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261613005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:01,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:01,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:01,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040218968] [2024-06-27 20:58:01,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:01,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:01,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:01,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:01,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:01,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:58:01,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 687 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:01,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:01,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:58:01,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:01,822 INFO L124 PetriNetUnfolderBase]: 221/446 cut-off events. [2024-06-27 20:58:01,822 INFO L125 PetriNetUnfolderBase]: For 3383/3389 co-relation queries the response was YES. [2024-06-27 20:58:01,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2016 conditions, 446 events. 221/446 cut-off events. For 3383/3389 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2050 event pairs, 35 based on Foata normal form. 6/449 useless extension candidates. Maximal degree in co-relation 1972. Up to 346 conditions per place. [2024-06-27 20:58:01,826 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 70 selfloop transitions, 20 changer transitions 0/93 dead transitions. [2024-06-27 20:58:01,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 93 transitions, 911 flow [2024-06-27 20:58:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:58:01,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:58:01,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-27 20:58:01,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-27 20:58:01,829 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 687 flow. Second operand 7 states and 75 transitions. [2024-06-27 20:58:01,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 93 transitions, 911 flow [2024-06-27 20:58:01,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 93 transitions, 865 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 20:58:01,835 INFO L231 Difference]: Finished difference. Result has 94 places, 81 transitions, 699 flow [2024-06-27 20:58:01,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=699, PETRI_PLACES=94, PETRI_TRANSITIONS=81} [2024-06-27 20:58:01,836 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 65 predicate places. [2024-06-27 20:58:01,836 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 81 transitions, 699 flow [2024-06-27 20:58:01,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:01,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:01,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:01,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 20:58:01,836 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)] === [2024-06-27 20:58:01,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:01,836 INFO L85 PathProgramCache]: Analyzing trace with hash 848320068, now seen corresponding path program 4 times [2024-06-27 20:58:01,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:01,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228471407] [2024-06-27 20:58:01,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:01,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:04,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:04,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228471407] [2024-06-27 20:58:04,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228471407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:04,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:04,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:04,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864211977] [2024-06-27 20:58:04,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:04,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:04,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:04,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:04,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:04,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:58:04,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 699 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:04,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:04,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:58:04,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:05,091 INFO L124 PetriNetUnfolderBase]: 218/441 cut-off events. [2024-06-27 20:58:05,091 INFO L125 PetriNetUnfolderBase]: For 2969/2975 co-relation queries the response was YES. [2024-06-27 20:58:05,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 441 events. 218/441 cut-off events. For 2969/2975 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2017 event pairs, 34 based on Foata normal form. 6/444 useless extension candidates. Maximal degree in co-relation 1908. Up to 315 conditions per place. [2024-06-27 20:58:05,093 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 67 selfloop transitions, 23 changer transitions 0/93 dead transitions. [2024-06-27 20:58:05,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 93 transitions, 911 flow [2024-06-27 20:58:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:58:05,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:58:05,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-27 20:58:05,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3476190476190476 [2024-06-27 20:58:05,095 INFO L175 Difference]: Start difference. First operand has 94 places, 81 transitions, 699 flow. Second operand 7 states and 73 transitions. [2024-06-27 20:58:05,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 93 transitions, 911 flow [2024-06-27 20:58:05,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 93 transitions, 865 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 20:58:05,102 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 703 flow [2024-06-27 20:58:05,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=703, PETRI_PLACES=96, PETRI_TRANSITIONS=81} [2024-06-27 20:58:05,102 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 67 predicate places. [2024-06-27 20:58:05,102 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 703 flow [2024-06-27 20:58:05,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:05,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:05,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:05,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 20:58:05,103 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)] === [2024-06-27 20:58:05,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:05,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1423824624, now seen corresponding path program 1 times [2024-06-27 20:58:05,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:05,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534038487] [2024-06-27 20:58:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:05,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:07,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:07,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:07,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534038487] [2024-06-27 20:58:07,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534038487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:07,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:07,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:07,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240756424] [2024-06-27 20:58:07,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:07,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:07,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:07,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:07,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:07,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:58:07,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 81 transitions, 703 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:07,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:07,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:58:07,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:08,386 INFO L124 PetriNetUnfolderBase]: 259/531 cut-off events. [2024-06-27 20:58:08,386 INFO L125 PetriNetUnfolderBase]: For 6019/6021 co-relation queries the response was YES. [2024-06-27 20:58:08,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2401 conditions, 531 events. 259/531 cut-off events. For 6019/6021 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2546 event pairs, 49 based on Foata normal form. 10/540 useless extension candidates. Maximal degree in co-relation 2355. Up to 181 conditions per place. [2024-06-27 20:58:08,390 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 53 selfloop transitions, 39 changer transitions 18/113 dead transitions. [2024-06-27 20:58:08,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 113 transitions, 1063 flow [2024-06-27 20:58:08,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:58:08,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:58:08,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 20:58:08,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 20:58:08,392 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 703 flow. Second operand 11 states and 121 transitions. [2024-06-27 20:58:08,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 113 transitions, 1063 flow [2024-06-27 20:58:08,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 113 transitions, 993 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 20:58:08,404 INFO L231 Difference]: Finished difference. Result has 101 places, 74 transitions, 643 flow [2024-06-27 20:58:08,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=643, PETRI_PLACES=101, PETRI_TRANSITIONS=74} [2024-06-27 20:58:08,410 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2024-06-27 20:58:08,410 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 74 transitions, 643 flow [2024-06-27 20:58:08,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:08,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:08,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:08,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 20:58:08,411 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)] === [2024-06-27 20:58:08,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:08,411 INFO L85 PathProgramCache]: Analyzing trace with hash 346699276, now seen corresponding path program 2 times [2024-06-27 20:58:08,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:08,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730026506] [2024-06-27 20:58:08,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:08,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:11,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:11,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730026506] [2024-06-27 20:58:11,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730026506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:11,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:11,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:11,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739493853] [2024-06-27 20:58:11,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:11,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:11,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:11,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:11,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:11,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:58:11,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 74 transitions, 643 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:11,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:11,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:58:11,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:12,109 INFO L124 PetriNetUnfolderBase]: 252/526 cut-off events. [2024-06-27 20:58:12,109 INFO L125 PetriNetUnfolderBase]: For 8347/8349 co-relation queries the response was YES. [2024-06-27 20:58:12,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 526 events. 252/526 cut-off events. For 8347/8349 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2559 event pairs, 59 based on Foata normal form. 10/535 useless extension candidates. Maximal degree in co-relation 2467. Up to 249 conditions per place. [2024-06-27 20:58:12,112 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 53 selfloop transitions, 37 changer transitions 10/103 dead transitions. [2024-06-27 20:58:12,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 103 transitions, 975 flow [2024-06-27 20:58:12,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:58:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:58:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-27 20:58:12,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 20:58:12,114 INFO L175 Difference]: Start difference. First operand has 101 places, 74 transitions, 643 flow. Second operand 12 states and 126 transitions. [2024-06-27 20:58:12,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 103 transitions, 975 flow [2024-06-27 20:58:12,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 103 transitions, 884 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 20:58:12,124 INFO L231 Difference]: Finished difference. Result has 97 places, 69 transitions, 592 flow [2024-06-27 20:58:12,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=592, PETRI_PLACES=97, PETRI_TRANSITIONS=69} [2024-06-27 20:58:12,125 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 68 predicate places. [2024-06-27 20:58:12,125 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 69 transitions, 592 flow [2024-06-27 20:58:12,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:12,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:12,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:12,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 20:58:12,126 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)] === [2024-06-27 20:58:12,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:12,127 INFO L85 PathProgramCache]: Analyzing trace with hash 433538956, now seen corresponding path program 3 times [2024-06-27 20:58:12,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:12,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595403512] [2024-06-27 20:58:12,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:12,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:14,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:14,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595403512] [2024-06-27 20:58:14,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595403512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:14,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:14,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:14,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687291986] [2024-06-27 20:58:14,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:14,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:14,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:14,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:14,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:14,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:58:14,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 69 transitions, 592 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:14,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:14,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:58:14,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:15,739 INFO L124 PetriNetUnfolderBase]: 213/453 cut-off events. [2024-06-27 20:58:15,739 INFO L125 PetriNetUnfolderBase]: For 6066/6068 co-relation queries the response was YES. [2024-06-27 20:58:15,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2047 conditions, 453 events. 213/453 cut-off events. For 6066/6068 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2120 event pairs, 50 based on Foata normal form. 12/464 useless extension candidates. Maximal degree in co-relation 2003. Up to 249 conditions per place. [2024-06-27 20:58:15,741 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 39 selfloop transitions, 29 changer transitions 21/92 dead transitions. [2024-06-27 20:58:15,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 92 transitions, 838 flow [2024-06-27 20:58:15,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:58:15,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:58:15,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 20:58:15,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-27 20:58:15,743 INFO L175 Difference]: Start difference. First operand has 97 places, 69 transitions, 592 flow. Second operand 11 states and 113 transitions. [2024-06-27 20:58:15,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 92 transitions, 838 flow [2024-06-27 20:58:15,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 762 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 20:58:15,749 INFO L231 Difference]: Finished difference. Result has 95 places, 61 transitions, 503 flow [2024-06-27 20:58:15,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=503, PETRI_PLACES=95, PETRI_TRANSITIONS=61} [2024-06-27 20:58:15,750 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-27 20:58:15,750 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 61 transitions, 503 flow [2024-06-27 20:58:15,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:15,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:15,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:15,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 20:58:15,750 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)] === [2024-06-27 20:58:15,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:15,751 INFO L85 PathProgramCache]: Analyzing trace with hash 951110908, now seen corresponding path program 4 times [2024-06-27 20:58:15,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:15,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444596333] [2024-06-27 20:58:15,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:15,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:18,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:18,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444596333] [2024-06-27 20:58:18,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444596333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:18,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:18,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:18,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835847838] [2024-06-27 20:58:18,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:18,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:18,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:18,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:18,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:18,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:58:18,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 61 transitions, 503 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:18,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:18,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:58:18,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:19,401 INFO L124 PetriNetUnfolderBase]: 191/394 cut-off events. [2024-06-27 20:58:19,401 INFO L125 PetriNetUnfolderBase]: For 5462/5462 co-relation queries the response was YES. [2024-06-27 20:58:19,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1763 conditions, 394 events. 191/394 cut-off events. For 5462/5462 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1741 event pairs, 49 based on Foata normal form. 10/401 useless extension candidates. Maximal degree in co-relation 1720. Up to 260 conditions per place. [2024-06-27 20:58:19,403 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 47 selfloop transitions, 21 changer transitions 11/82 dead transitions. [2024-06-27 20:58:19,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 82 transitions, 719 flow [2024-06-27 20:58:19,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:58:19,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:58:19,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-27 20:58:19,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3277777777777778 [2024-06-27 20:58:19,404 INFO L175 Difference]: Start difference. First operand has 95 places, 61 transitions, 503 flow. Second operand 12 states and 118 transitions. [2024-06-27 20:58:19,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 82 transitions, 719 flow [2024-06-27 20:58:19,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 82 transitions, 653 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:58:19,410 INFO L231 Difference]: Finished difference. Result has 90 places, 58 transitions, 459 flow [2024-06-27 20:58:19,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=459, PETRI_PLACES=90, PETRI_TRANSITIONS=58} [2024-06-27 20:58:19,410 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2024-06-27 20:58:19,411 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 58 transitions, 459 flow [2024-06-27 20:58:19,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:19,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:19,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:19,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 20:58:19,411 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)] === [2024-06-27 20:58:19,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:19,412 INFO L85 PathProgramCache]: Analyzing trace with hash -847761362, now seen corresponding path program 1 times [2024-06-27 20:58:19,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:19,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710918738] [2024-06-27 20:58:19,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:19,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:22,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:22,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710918738] [2024-06-27 20:58:22,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710918738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:22,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:22,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:58:22,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244138084] [2024-06-27 20:58:22,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:22,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:58:22,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:22,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:58:22,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:58:22,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:58:22,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 58 transitions, 459 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:22,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:22,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:58:22,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:23,364 INFO L124 PetriNetUnfolderBase]: 202/419 cut-off events. [2024-06-27 20:58:23,364 INFO L125 PetriNetUnfolderBase]: For 5081/5089 co-relation queries the response was YES. [2024-06-27 20:58:23,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1901 conditions, 419 events. 202/419 cut-off events. For 5081/5089 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1920 event pairs, 58 based on Foata normal form. 14/430 useless extension candidates. Maximal degree in co-relation 1860. Up to 244 conditions per place. [2024-06-27 20:58:23,367 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 51 selfloop transitions, 18 changer transitions 10/82 dead transitions. [2024-06-27 20:58:23,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 82 transitions, 719 flow [2024-06-27 20:58:23,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:58:23,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:58:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-27 20:58:23,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33055555555555555 [2024-06-27 20:58:23,369 INFO L175 Difference]: Start difference. First operand has 90 places, 58 transitions, 459 flow. Second operand 12 states and 119 transitions. [2024-06-27 20:58:23,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 82 transitions, 719 flow [2024-06-27 20:58:23,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 82 transitions, 659 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-27 20:58:23,377 INFO L231 Difference]: Finished difference. Result has 88 places, 54 transitions, 412 flow [2024-06-27 20:58:23,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=412, PETRI_PLACES=88, PETRI_TRANSITIONS=54} [2024-06-27 20:58:23,378 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2024-06-27 20:58:23,378 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 54 transitions, 412 flow [2024-06-27 20:58:23,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:23,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:23,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:23,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 20:58:23,379 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)] === [2024-06-27 20:58:23,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:23,379 INFO L85 PathProgramCache]: Analyzing trace with hash -853338944, now seen corresponding path program 5 times [2024-06-27 20:58:23,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:23,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731535386] [2024-06-27 20:58:23,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:23,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:26,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:26,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:26,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731535386] [2024-06-27 20:58:26,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731535386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:26,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:26,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:26,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336117643] [2024-06-27 20:58:26,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:26,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:26,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:26,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:26,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:26,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:58:26,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 54 transitions, 412 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:26,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:26,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:58:26,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:26,843 INFO L124 PetriNetUnfolderBase]: 171/358 cut-off events. [2024-06-27 20:58:26,843 INFO L125 PetriNetUnfolderBase]: For 3834/3842 co-relation queries the response was YES. [2024-06-27 20:58:26,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 358 events. 171/358 cut-off events. For 3834/3842 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1544 event pairs, 51 based on Foata normal form. 18/373 useless extension candidates. Maximal degree in co-relation 1470. Up to 244 conditions per place. [2024-06-27 20:58:26,845 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 42 selfloop transitions, 14 changer transitions 12/71 dead transitions. [2024-06-27 20:58:26,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 71 transitions, 596 flow [2024-06-27 20:58:26,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:58:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:58:26,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-27 20:58:26,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33 [2024-06-27 20:58:26,848 INFO L175 Difference]: Start difference. First operand has 88 places, 54 transitions, 412 flow. Second operand 10 states and 99 transitions. [2024-06-27 20:58:26,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 71 transitions, 596 flow [2024-06-27 20:58:26,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 71 transitions, 558 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:58:26,852 INFO L231 Difference]: Finished difference. Result has 84 places, 50 transitions, 363 flow [2024-06-27 20:58:26,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=363, PETRI_PLACES=84, PETRI_TRANSITIONS=50} [2024-06-27 20:58:26,852 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2024-06-27 20:58:26,853 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 50 transitions, 363 flow [2024-06-27 20:58:26,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:26,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:26,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:26,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 20:58:26,853 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)] === [2024-06-27 20:58:26,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:26,853 INFO L85 PathProgramCache]: Analyzing trace with hash -853486814, now seen corresponding path program 6 times [2024-06-27 20:58:26,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:26,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383922591] [2024-06-27 20:58:26,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:26,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:30,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:30,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:30,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383922591] [2024-06-27 20:58:30,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383922591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:30,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:30,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:30,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003113547] [2024-06-27 20:58:30,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:30,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:30,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:30,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:30,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:30,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:58:30,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 50 transitions, 363 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:30,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:30,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:58:30,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:30,676 INFO L124 PetriNetUnfolderBase]: 157/332 cut-off events. [2024-06-27 20:58:30,677 INFO L125 PetriNetUnfolderBase]: For 3543/3543 co-relation queries the response was YES. [2024-06-27 20:58:30,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1393 conditions, 332 events. 157/332 cut-off events. For 3543/3543 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1391 event pairs, 45 based on Foata normal form. 8/337 useless extension candidates. Maximal degree in co-relation 1354. Up to 224 conditions per place. [2024-06-27 20:58:30,679 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 34 selfloop transitions, 8 changer transitions 21/66 dead transitions. [2024-06-27 20:58:30,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 66 transitions, 531 flow [2024-06-27 20:58:30,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:58:30,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:58:30,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-27 20:58:30,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-06-27 20:58:30,682 INFO L175 Difference]: Start difference. First operand has 84 places, 50 transitions, 363 flow. Second operand 10 states and 96 transitions. [2024-06-27 20:58:30,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 66 transitions, 531 flow [2024-06-27 20:58:30,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 66 transitions, 490 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 20:58:30,686 INFO L231 Difference]: Finished difference. Result has 81 places, 41 transitions, 253 flow [2024-06-27 20:58:30,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=253, PETRI_PLACES=81, PETRI_TRANSITIONS=41} [2024-06-27 20:58:30,686 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-06-27 20:58:30,686 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 41 transitions, 253 flow [2024-06-27 20:58:30,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:30,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:30,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:30,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 20:58:30,687 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)] === [2024-06-27 20:58:30,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:30,687 INFO L85 PathProgramCache]: Analyzing trace with hash 518914986, now seen corresponding path program 2 times [2024-06-27 20:58:30,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:30,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311257999] [2024-06-27 20:58:30,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:30,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:33,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:33,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:33,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311257999] [2024-06-27 20:58:33,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311257999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:33,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:33,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:58:33,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327858743] [2024-06-27 20:58:33,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:33,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:58:33,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:33,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:58:33,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:58:33,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:58:33,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 41 transitions, 253 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:33,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:33,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:58:33,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:34,835 INFO L124 PetriNetUnfolderBase]: 127/269 cut-off events. [2024-06-27 20:58:34,835 INFO L125 PetriNetUnfolderBase]: For 3151/3151 co-relation queries the response was YES. [2024-06-27 20:58:34,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 269 events. 127/269 cut-off events. For 3151/3151 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1095 event pairs, 34 based on Foata normal form. 10/278 useless extension candidates. Maximal degree in co-relation 1015. Up to 153 conditions per place. [2024-06-27 20:58:34,837 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 27 selfloop transitions, 16 changer transitions 11/57 dead transitions. [2024-06-27 20:58:34,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 57 transitions, 405 flow [2024-06-27 20:58:34,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:58:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:58:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-27 20:58:34,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33 [2024-06-27 20:58:34,839 INFO L175 Difference]: Start difference. First operand has 81 places, 41 transitions, 253 flow. Second operand 10 states and 99 transitions. [2024-06-27 20:58:34,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 57 transitions, 405 flow [2024-06-27 20:58:34,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 57 transitions, 364 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-27 20:58:34,842 INFO L231 Difference]: Finished difference. Result has 68 places, 38 transitions, 233 flow [2024-06-27 20:58:34,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=233, PETRI_PLACES=68, PETRI_TRANSITIONS=38} [2024-06-27 20:58:34,842 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2024-06-27 20:58:34,842 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 38 transitions, 233 flow [2024-06-27 20:58:34,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:34,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:34,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:34,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 20:58:34,843 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)] === [2024-06-27 20:58:34,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:34,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1787413418, now seen corresponding path program 3 times [2024-06-27 20:58:34,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:34,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332243559] [2024-06-27 20:58:34,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:34,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:37,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:37,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:37,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332243559] [2024-06-27 20:58:37,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332243559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:37,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:37,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:58:37,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227459542] [2024-06-27 20:58:37,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:37,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:58:37,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:37,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:58:37,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:58:38,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:58:38,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 38 transitions, 233 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:38,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:38,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:58:38,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:38,912 INFO L124 PetriNetUnfolderBase]: 117/251 cut-off events. [2024-06-27 20:58:38,912 INFO L125 PetriNetUnfolderBase]: For 3032/3036 co-relation queries the response was YES. [2024-06-27 20:58:38,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 251 events. 117/251 cut-off events. For 3032/3036 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1018 event pairs, 39 based on Foata normal form. 14/264 useless extension candidates. Maximal degree in co-relation 965. Up to 161 conditions per place. [2024-06-27 20:58:38,913 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 26 selfloop transitions, 11 changer transitions 11/51 dead transitions. [2024-06-27 20:58:38,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 51 transitions, 367 flow [2024-06-27 20:58:38,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:58:38,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:58:38,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-27 20:58:38,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2024-06-27 20:58:38,915 INFO L175 Difference]: Start difference. First operand has 68 places, 38 transitions, 233 flow. Second operand 9 states and 88 transitions. [2024-06-27 20:58:38,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 51 transitions, 367 flow [2024-06-27 20:58:38,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 51 transitions, 329 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 20:58:38,919 INFO L231 Difference]: Finished difference. Result has 65 places, 35 transitions, 202 flow [2024-06-27 20:58:38,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=65, PETRI_TRANSITIONS=35} [2024-06-27 20:58:38,919 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2024-06-27 20:58:38,920 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 35 transitions, 202 flow [2024-06-27 20:58:38,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:38,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:38,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:38,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 20:58:38,921 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)] === [2024-06-27 20:58:38,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:38,921 INFO L85 PathProgramCache]: Analyzing trace with hash 518922426, now seen corresponding path program 4 times [2024-06-27 20:58:38,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:38,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153250487] [2024-06-27 20:58:38,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:38,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:42,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:42,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:42,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153250487] [2024-06-27 20:58:42,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153250487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:42,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:42,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:58:42,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552399958] [2024-06-27 20:58:42,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:42,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:58:42,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:42,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:58:42,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:58:42,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:58:42,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 35 transitions, 202 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:42,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:42,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:58:42,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:42,730 INFO L124 PetriNetUnfolderBase]: 99/221 cut-off events. [2024-06-27 20:58:42,731 INFO L125 PetriNetUnfolderBase]: For 2544/2548 co-relation queries the response was YES. [2024-06-27 20:58:42,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 221 events. 99/221 cut-off events. For 2544/2548 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 856 event pairs, 30 based on Foata normal form. 10/230 useless extension candidates. Maximal degree in co-relation 841. Up to 137 conditions per place. [2024-06-27 20:58:42,732 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 24 selfloop transitions, 11 changer transitions 11/49 dead transitions. [2024-06-27 20:58:42,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 49 transitions, 326 flow [2024-06-27 20:58:42,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:58:42,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:58:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-06-27 20:58:42,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31333333333333335 [2024-06-27 20:58:42,733 INFO L175 Difference]: Start difference. First operand has 65 places, 35 transitions, 202 flow. Second operand 10 states and 94 transitions. [2024-06-27 20:58:42,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 49 transitions, 326 flow [2024-06-27 20:58:42,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 49 transitions, 300 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 20:58:42,735 INFO L231 Difference]: Finished difference. Result has 64 places, 32 transitions, 186 flow [2024-06-27 20:58:42,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=186, PETRI_PLACES=64, PETRI_TRANSITIONS=32} [2024-06-27 20:58:42,736 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-27 20:58:42,736 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 32 transitions, 186 flow [2024-06-27 20:58:42,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:42,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:42,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:42,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 20:58:42,737 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)] === [2024-06-27 20:58:42,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:42,737 INFO L85 PathProgramCache]: Analyzing trace with hash 528119196, now seen corresponding path program 5 times [2024-06-27 20:58:42,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:42,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119141335] [2024-06-27 20:58:42,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:42,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:45,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:45,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119141335] [2024-06-27 20:58:45,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119141335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:45,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:45,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:58:45,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133402730] [2024-06-27 20:58:45,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:45,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:58:45,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:45,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:58:45,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:58:45,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:58:45,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 32 transitions, 186 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:45,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:45,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:58:45,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:46,424 INFO L124 PetriNetUnfolderBase]: 111/249 cut-off events. [2024-06-27 20:58:46,425 INFO L125 PetriNetUnfolderBase]: For 2992/2992 co-relation queries the response was YES. [2024-06-27 20:58:46,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 249 events. 111/249 cut-off events. For 2992/2992 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1008 event pairs, 46 based on Foata normal form. 6/254 useless extension candidates. Maximal degree in co-relation 1005. Up to 114 conditions per place. [2024-06-27 20:58:46,426 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 28 selfloop transitions, 9 changer transitions 10/50 dead transitions. [2024-06-27 20:58:46,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 50 transitions, 356 flow [2024-06-27 20:58:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:58:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:58:46,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-27 20:58:46,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-06-27 20:58:46,427 INFO L175 Difference]: Start difference. First operand has 64 places, 32 transitions, 186 flow. Second operand 10 states and 96 transitions. [2024-06-27 20:58:46,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 50 transitions, 356 flow [2024-06-27 20:58:46,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 50 transitions, 318 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 20:58:46,429 INFO L231 Difference]: Finished difference. Result has 60 places, 28 transitions, 155 flow [2024-06-27 20:58:46,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=155, PETRI_PLACES=60, PETRI_TRANSITIONS=28} [2024-06-27 20:58:46,429 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-27 20:58:46,429 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 28 transitions, 155 flow [2024-06-27 20:58:46,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:46,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:46,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:46,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 20:58:46,430 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)] === [2024-06-27 20:58:46,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:46,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1787420858, now seen corresponding path program 6 times [2024-06-27 20:58:46,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:46,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799791886] [2024-06-27 20:58:46,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:46,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:49,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:49,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:49,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799791886] [2024-06-27 20:58:49,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799791886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:49,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:49,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:58:49,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486184704] [2024-06-27 20:58:49,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:49,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:58:49,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:49,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:58:49,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:58:49,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:58:49,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 28 transitions, 155 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:49,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:49,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:58:49,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:50,298 INFO L124 PetriNetUnfolderBase]: 84/188 cut-off events. [2024-06-27 20:58:50,298 INFO L125 PetriNetUnfolderBase]: For 1793/1797 co-relation queries the response was YES. [2024-06-27 20:58:50,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 188 events. 84/188 cut-off events. For 1793/1797 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 679 event pairs, 32 based on Foata normal form. 10/197 useless extension candidates. Maximal degree in co-relation 721. Up to 71 conditions per place. [2024-06-27 20:58:50,299 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 25 selfloop transitions, 8 changer transitions 7/43 dead transitions. [2024-06-27 20:58:50,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 43 transitions, 299 flow [2024-06-27 20:58:50,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:58:50,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:58:50,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-06-27 20:58:50,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3148148148148148 [2024-06-27 20:58:50,300 INFO L175 Difference]: Start difference. First operand has 60 places, 28 transitions, 155 flow. Second operand 9 states and 85 transitions. [2024-06-27 20:58:50,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 43 transitions, 299 flow [2024-06-27 20:58:50,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 43 transitions, 258 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-27 20:58:50,303 INFO L231 Difference]: Finished difference. Result has 52 places, 25 transitions, 126 flow [2024-06-27 20:58:50,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=126, PETRI_PLACES=52, PETRI_TRANSITIONS=25} [2024-06-27 20:58:50,304 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2024-06-27 20:58:50,304 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 25 transitions, 126 flow [2024-06-27 20:58:50,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:50,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:50,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:50,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 20:58:50,305 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)] === [2024-06-27 20:58:50,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:50,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1781843276, now seen corresponding path program 7 times [2024-06-27 20:58:50,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:50,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613036530] [2024-06-27 20:58:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:50,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:52,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:52,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613036530] [2024-06-27 20:58:52,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613036530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:52,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:52,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:52,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160538919] [2024-06-27 20:58:52,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:52,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:52,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:52,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:52,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:52,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:58:52,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 25 transitions, 126 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:52,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:52,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:58:52,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:53,632 INFO L124 PetriNetUnfolderBase]: 55/125 cut-off events. [2024-06-27 20:58:53,633 INFO L125 PetriNetUnfolderBase]: For 789/789 co-relation queries the response was YES. [2024-06-27 20:58:53,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 125 events. 55/125 cut-off events. For 789/789 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 350 event pairs, 23 based on Foata normal form. 10/134 useless extension candidates. Maximal degree in co-relation 414. Up to 57 conditions per place. [2024-06-27 20:58:53,633 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 16 selfloop transitions, 5 changer transitions 11/35 dead transitions. [2024-06-27 20:58:53,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 35 transitions, 214 flow [2024-06-27 20:58:53,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:58:53,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:58:53,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 73 transitions. [2024-06-27 20:58:53,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30416666666666664 [2024-06-27 20:58:53,634 INFO L175 Difference]: Start difference. First operand has 52 places, 25 transitions, 126 flow. Second operand 8 states and 73 transitions. [2024-06-27 20:58:53,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 35 transitions, 214 flow [2024-06-27 20:58:53,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 35 transitions, 192 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 20:58:53,635 INFO L231 Difference]: Finished difference. Result has 48 places, 21 transitions, 91 flow [2024-06-27 20:58:53,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=91, PETRI_PLACES=48, PETRI_TRANSITIONS=21} [2024-06-27 20:58:53,636 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-06-27 20:58:53,636 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 21 transitions, 91 flow [2024-06-27 20:58:53,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:53,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:58:53,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:53,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 20:58:53,637 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)] === [2024-06-27 20:58:53,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:58:53,637 INFO L85 PathProgramCache]: Analyzing trace with hash 34214046, now seen corresponding path program 8 times [2024-06-27 20:58:53,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:58:53,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917454161] [2024-06-27 20:58:53,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:58:53,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:58:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:58:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:58:56,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:58:56,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917454161] [2024-06-27 20:58:56,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917454161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:58:56,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:58:56,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:58:56,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160855820] [2024-06-27 20:58:56,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:58:56,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:58:56,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:58:56,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:58:56,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:58:56,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-27 20:58:56,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 21 transitions, 91 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:56,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:58:56,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-27 20:58:56,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:58:56,977 INFO L124 PetriNetUnfolderBase]: 21/59 cut-off events. [2024-06-27 20:58:56,978 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-06-27 20:58:56,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 59 events. 21/59 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 1 based on Foata normal form. 8/66 useless extension candidates. Maximal degree in co-relation 154. Up to 32 conditions per place. [2024-06-27 20:58:56,978 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2024-06-27 20:58:56,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 25 transitions, 129 flow [2024-06-27 20:58:56,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:58:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:58:56,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 63 transitions. [2024-06-27 20:58:56,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2625 [2024-06-27 20:58:56,979 INFO L175 Difference]: Start difference. First operand has 48 places, 21 transitions, 91 flow. Second operand 8 states and 63 transitions. [2024-06-27 20:58:56,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 25 transitions, 129 flow [2024-06-27 20:58:56,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 25 transitions, 103 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 20:58:56,979 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2024-06-27 20:58:56,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2024-06-27 20:58:56,980 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2024-06-27 20:58:56,980 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2024-06-27 20:58:56,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:58:56,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 20:58:56,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 20:58:56,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 20:58:56,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 20:58:56,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 20:58:56,984 INFO L445 BasicCegarLoop]: Path program histogram: [8, 6, 6, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2024-06-27 20:58:56,987 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 20:58:56,987 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 20:58:56,991 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 20:58:56,991 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 20:58:56,992 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 08:58:56 BasicIcfg [2024-06-27 20:58:56,992 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 20:58:56,993 INFO L158 Benchmark]: Toolchain (without parser) took 138277.62ms. Allocated memory was 190.8MB in the beginning and 778.0MB in the end (delta: 587.2MB). Free memory was 108.2MB in the beginning and 459.5MB in the end (delta: -351.3MB). Peak memory consumption was 238.5MB. Max. memory is 16.1GB. [2024-06-27 20:58:56,993 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:58:56,994 INFO L158 Benchmark]: Witness Parser took 2.09ms. Allocated memory is still 190.8MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:58:56,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 722.25ms. Allocated memory is still 190.8MB. Free memory was 107.7MB in the beginning and 68.8MB in the end (delta: 38.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-06-27 20:58:56,994 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.00ms. Allocated memory is still 190.8MB. Free memory was 68.8MB in the beginning and 157.0MB in the end (delta: -88.2MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2024-06-27 20:58:56,994 INFO L158 Benchmark]: Boogie Preprocessor took 55.41ms. Allocated memory is still 190.8MB. Free memory was 157.0MB in the beginning and 152.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 20:58:56,995 INFO L158 Benchmark]: RCFGBuilder took 1022.72ms. Allocated memory is still 190.8MB. Free memory was 152.8MB in the beginning and 140.2MB in the end (delta: 12.5MB). Peak memory consumption was 97.5MB. Max. memory is 16.1GB. [2024-06-27 20:58:56,995 INFO L158 Benchmark]: TraceAbstraction took 136382.78ms. Allocated memory was 190.8MB in the beginning and 778.0MB in the end (delta: 587.2MB). Free memory was 139.2MB in the beginning and 459.5MB in the end (delta: -320.3MB). Peak memory consumption was 266.9MB. Max. memory is 16.1GB. [2024-06-27 20:58:56,996 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 121.6MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 2.09ms. Allocated memory is still 190.8MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 722.25ms. Allocated memory is still 190.8MB. Free memory was 107.7MB in the beginning and 68.8MB in the end (delta: 38.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.00ms. Allocated memory is still 190.8MB. Free memory was 68.8MB in the beginning and 157.0MB in the end (delta: -88.2MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.41ms. Allocated memory is still 190.8MB. Free memory was 157.0MB in the beginning and 152.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1022.72ms. Allocated memory is still 190.8MB. Free memory was 152.8MB in the beginning and 140.2MB in the end (delta: 12.5MB). Peak memory consumption was 97.5MB. Max. memory is 16.1GB. * TraceAbstraction took 136382.78ms. Allocated memory was 190.8MB in the beginning and 778.0MB in the end (delta: 587.2MB). Free memory was 139.2MB in the beginning and 459.5MB in the end (delta: -320.3MB). Peak memory consumption was 266.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 816]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 817]: 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, 47 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: 136.3s, OverallIterations: 41, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 29.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1220 SdHoareTripleChecker+Valid, 8.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1118 mSDsluCounter, 729 SdHoareTripleChecker+Invalid, 7.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 566 mSDsCounter, 378 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6801 IncrementalHoareTripleChecker+Invalid, 7179 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 378 mSolverCounterUnsat, 163 mSDtfsCounter, 6801 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 422 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 422 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 47.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=704occurred in iteration=21, InterpolantAutomatonStates: 338, 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, 0.6s SatisfiabilityAnalysisTime, 105.6s InterpolantComputationTime, 612 NumberOfCodeBlocks, 612 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 571 ConstructedInterpolants, 0 QuantifiedInterpolants, 71479 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 41 InterpolantComputations, 41 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! [2024-06-27 20:58:57,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE