./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix000.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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/mix000.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix000.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-76401ed-m [2024-06-20 15:40:22,050 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 15:40:22,114 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 15:40:22,120 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 15:40:22,120 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 15:40:22,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 15:40:22,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 15:40:22,144 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 15:40:22,145 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 15:40:22,147 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 15:40:22,148 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 15:40:22,148 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 15:40:22,149 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 15:40:22,150 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 15:40:22,150 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 15:40:22,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 15:40:22,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 15:40:22,150 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 15:40:22,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 15:40:22,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 15:40:22,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 15:40:22,152 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 15:40:22,152 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 15:40:22,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 15:40:22,153 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 15:40:22,153 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 15:40:22,153 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 15:40:22,153 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 15:40:22,154 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 15:40:22,154 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 15:40:22,155 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 15:40:22,155 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 15:40:22,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:40:22,155 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 15:40:22,155 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 15:40:22,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 15:40:22,156 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 15:40:22,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 15:40:22,156 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 15:40:22,156 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 15:40:22,156 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 15:40:22,157 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 15:40:22,157 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 15:40:22,157 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 15:40:22,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 15:40:22,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 15:40:22,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 15:40:22,414 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 15:40:22,415 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 15:40:22,416 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.i [2024-06-20 15:40:23,388 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 15:40:23,647 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 15:40:23,647 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.oepc.i [2024-06-20 15:40:23,671 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efa9f72dc/6e3987024d2146d1bd0c80f25d2ee35d/FLAG96151811e [2024-06-20 15:40:23,687 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efa9f72dc/6e3987024d2146d1bd0c80f25d2ee35d [2024-06-20 15:40:23,689 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 15:40:23,689 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 15:40:23,691 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix000.oepc.yml/witness.yml [2024-06-20 15:40:23,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 15:40:23,810 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 15:40:23,811 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 15:40:23,811 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 15:40:23,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 15:40:23,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:40:23" (1/2) ... [2024-06-20 15:40:23,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db5ba36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:40:23, skipping insertion in model container [2024-06-20 15:40:23,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 03:40:23" (1/2) ... [2024-06-20 15:40:23,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52c34a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 03:40:23, skipping insertion in model container [2024-06-20 15:40:23,820 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:40:23" (2/2) ... [2024-06-20 15:40:23,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db5ba36 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:23, skipping insertion in model container [2024-06-20 15:40:23,821 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:40:23" (2/2) ... [2024-06-20 15:40:23,821 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 15:40:23,874 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 15:40:23,875 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-20 15:40:23,875 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-20 15:40:23,875 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 15:40:23,876 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-20 15:40:23,912 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 15:40:24,177 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:40:24,186 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 15:40:24,300 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 15:40:24,328 INFO L206 MainTranslator]: Completed translation [2024-06-20 15:40:24,328 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:24 WrapperNode [2024-06-20 15:40:24,328 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 15:40:24,330 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 15:40:24,330 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 15:40:24,330 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 15:40:24,335 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 20.06 03:40:24" (1/1) ... [2024-06-20 15:40:24,348 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 20.06 03:40:24" (1/1) ... [2024-06-20 15:40:24,381 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-20 15:40:24,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 15:40:24,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 15:40:24,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 15:40:24,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 15:40:24,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:24" (1/1) ... [2024-06-20 15:40:24,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:24" (1/1) ... [2024-06-20 15:40:24,394 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:24" (1/1) ... [2024-06-20 15:40:24,409 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-20 15:40:24,409 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:24" (1/1) ... [2024-06-20 15:40:24,409 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:24" (1/1) ... [2024-06-20 15:40:24,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:24" (1/1) ... [2024-06-20 15:40:24,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:24" (1/1) ... [2024-06-20 15:40:24,429 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:24" (1/1) ... [2024-06-20 15:40:24,431 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:24" (1/1) ... [2024-06-20 15:40:24,433 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 15:40:24,433 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 15:40:24,434 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 15:40:24,434 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 15:40:24,435 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:24" (1/1) ... [2024-06-20 15:40:24,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 15:40:24,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 15:40:24,504 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) [2024-06-20 15:40:24,513 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 [2024-06-20 15:40:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 15:40:24,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 15:40:24,540 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-20 15:40:24,540 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-20 15:40:24,540 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-20 15:40:24,540 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-20 15:40:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 15:40:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 15:40:24,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 15:40:24,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 15:40:24,542 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 15:40:24,662 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 15:40:24,664 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 15:40:24,969 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 15:40:24,969 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 15:40:25,121 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 15:40:25,122 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 15:40:25,123 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:40:25 BoogieIcfgContainer [2024-06-20 15:40:25,123 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 15:40:25,125 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 15:40:25,126 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 15:40:25,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 15:40:25,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 03:40:23" (1/4) ... [2024-06-20 15:40:25,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1167fe6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 03:40:25, skipping insertion in model container [2024-06-20 15:40:25,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 03:40:23" (2/4) ... [2024-06-20 15:40:25,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1167fe6d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 03:40:25, skipping insertion in model container [2024-06-20 15:40:25,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 03:40:24" (3/4) ... [2024-06-20 15:40:25,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1167fe6d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 03:40:25, skipping insertion in model container [2024-06-20 15:40:25,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 03:40:25" (4/4) ... [2024-06-20 15:40:25,135 INFO L112 eAbstractionObserver]: Analyzing ICFG mix000.oepc.i [2024-06-20 15:40:25,168 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 15:40:25,168 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 15:40:25,168 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 15:40:25,201 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 15:40:25,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-20 15:40:25,246 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-20 15:40:25,246 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 15:40:25,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-20 15:40:25,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-20 15:40:25,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-20 15:40:25,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 15:40:25,270 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;@4f28b15a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 15:40:25,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 15:40:25,274 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 15:40:25,274 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-20 15:40:25,274 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 15:40:25,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:25,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 15:40:25,276 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)] === [2024-06-20 15:40:25,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:25,281 INFO L85 PathProgramCache]: Analyzing trace with hash 368677949, now seen corresponding path program 1 times [2024-06-20 15:40:25,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:25,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926967049] [2024-06-20 15:40:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:25,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:26,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:26,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926967049] [2024-06-20 15:40:26,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926967049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:26,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:26,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 15:40:26,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407810949] [2024-06-20 15:40:26,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:26,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 15:40:26,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:26,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 15:40:26,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 15:40:26,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-20 15:40:26,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:26,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:26,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-20 15:40:26,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:26,408 INFO L124 PetriNetUnfolderBase]: 162/309 cut-off events. [2024-06-20 15:40:26,409 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-20 15:40:26,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 309 events. 162/309 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1182 event pairs, 97 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 609. Up to 288 conditions per place. [2024-06-20 15:40:26,414 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-20 15:40:26,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 115 flow [2024-06-20 15:40:26,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 15:40:26,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 15:40:26,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-06-20 15:40:26,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2024-06-20 15:40:26,426 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 56 transitions. [2024-06-20 15:40:26,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 115 flow [2024-06-20 15:40:26,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 15:40:26,432 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-20 15:40:26,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-20 15:40:26,436 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-20 15:40:26,437 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-20 15:40:26,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:26,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:26,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:26,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 15:40:26,438 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)] === [2024-06-20 15:40:26,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:26,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2112218588, now seen corresponding path program 1 times [2024-06-20 15:40:26,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:26,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723972756] [2024-06-20 15:40:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:26,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:27,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:27,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723972756] [2024-06-20 15:40:27,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723972756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:27,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:27,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 15:40:27,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193806919] [2024-06-20 15:40:27,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:27,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 15:40:27,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:27,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 15:40:27,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 15:40:27,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-20 15:40:27,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:27,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:27,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-20 15:40:27,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:27,142 INFO L124 PetriNetUnfolderBase]: 159/306 cut-off events. [2024-06-20 15:40:27,142 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-06-20 15:40:27,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 306 events. 159/306 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1173 event pairs, 79 based on Foata normal form. 2/306 useless extension candidates. Maximal degree in co-relation 682. Up to 274 conditions per place. [2024-06-20 15:40:27,144 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 25 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-20 15:40:27,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 157 flow [2024-06-20 15:40:27,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 15:40:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 15:40:27,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-06-20 15:40:27,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-20 15:40:27,146 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 72 transitions. [2024-06-20 15:40:27,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 157 flow [2024-06-20 15:40:27,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 15:40:27,148 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-20 15:40:27,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-20 15:40:27,148 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-20 15:40:27,149 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-20 15:40:27,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:27,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:27,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:27,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 15:40:27,149 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)] === [2024-06-20 15:40:27,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:27,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1054267720, now seen corresponding path program 1 times [2024-06-20 15:40:27,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:27,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410870209] [2024-06-20 15:40:27,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:27,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:27,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:27,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:27,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410870209] [2024-06-20 15:40:27,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410870209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:27,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:27,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 15:40:27,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857729733] [2024-06-20 15:40:27,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:27,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 15:40:27,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:27,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 15:40:27,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-20 15:40:27,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-20 15:40:27,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:27,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:27,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-20 15:40:27,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:28,077 INFO L124 PetriNetUnfolderBase]: 153/300 cut-off events. [2024-06-20 15:40:28,078 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-06-20 15:40:28,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 300 events. 153/300 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1128 event pairs, 43 based on Foata normal form. 4/302 useless extension candidates. Maximal degree in co-relation 733. Up to 246 conditions per place. [2024-06-20 15:40:28,081 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 30 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-20 15:40:28,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 209 flow [2024-06-20 15:40:28,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:40:28,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:40:28,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-20 15:40:28,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5741935483870968 [2024-06-20 15:40:28,086 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 89 transitions. [2024-06-20 15:40:28,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 209 flow [2024-06-20 15:40:28,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-20 15:40:28,090 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-20 15:40:28,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-20 15:40:28,091 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-20 15:40:28,091 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-20 15:40:28,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:28,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:28,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:28,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 15:40:28,092 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:40:28,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:28,093 INFO L85 PathProgramCache]: Analyzing trace with hash -905032760, now seen corresponding path program 1 times [2024-06-20 15:40:28,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:28,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003072290] [2024-06-20 15:40:28,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:28,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:28,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:28,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:28,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003072290] [2024-06-20 15:40:28,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003072290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:28,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:28,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 15:40:28,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254038216] [2024-06-20 15:40:28,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:28,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 15:40:28,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:28,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 15:40:28,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-20 15:40:28,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:28,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:28,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:28,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:28,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:28,823 INFO L124 PetriNetUnfolderBase]: 211/379 cut-off events. [2024-06-20 15:40:28,823 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2024-06-20 15:40:28,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 379 events. 211/379 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1339 event pairs, 92 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 1037. Up to 368 conditions per place. [2024-06-20 15:40:28,826 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 28 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-20 15:40:28,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 205 flow [2024-06-20 15:40:28,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 15:40:28,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 15:40:28,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2024-06-20 15:40:28,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-20 15:40:28,827 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 5 states and 61 transitions. [2024-06-20 15:40:28,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 205 flow [2024-06-20 15:40:28,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 190 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-20 15:40:28,829 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 131 flow [2024-06-20 15:40:28,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-20 15:40:28,829 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-20 15:40:28,830 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 131 flow [2024-06-20 15:40:28,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:28,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:28,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:28,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 15:40:28,830 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:40:28,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:28,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1405231846, now seen corresponding path program 1 times [2024-06-20 15:40:28,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:28,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634232589] [2024-06-20 15:40:28,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:28,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:30,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:30,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634232589] [2024-06-20 15:40:30,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634232589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:30,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:30,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:40:30,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226162564] [2024-06-20 15:40:30,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:30,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:40:30,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:30,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:40:30,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:40:30,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-20 15:40:30,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 131 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:30,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:30,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-20 15:40:30,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:30,417 INFO L124 PetriNetUnfolderBase]: 190/354 cut-off events. [2024-06-20 15:40:30,417 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2024-06-20 15:40:30,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 354 events. 190/354 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1260 event pairs, 34 based on Foata normal form. 4/356 useless extension candidates. Maximal degree in co-relation 1002. Up to 272 conditions per place. [2024-06-20 15:40:30,420 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 39 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2024-06-20 15:40:30,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 291 flow [2024-06-20 15:40:30,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:30,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-20 15:40:30,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-20 15:40:30,421 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 131 flow. Second operand 8 states and 124 transitions. [2024-06-20 15:40:30,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 291 flow [2024-06-20 15:40:30,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 280 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-20 15:40:30,423 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 162 flow [2024-06-20 15:40:30,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=162, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-20 15:40:30,424 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-20 15:40:30,424 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 162 flow [2024-06-20 15:40:30,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:30,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:30,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:30,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 15:40:30,425 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)] === [2024-06-20 15:40:30,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:30,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2008756451, now seen corresponding path program 1 times [2024-06-20 15:40:30,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:30,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250676678] [2024-06-20 15:40:30,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:30,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:30,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:30,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:30,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250676678] [2024-06-20 15:40:30,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250676678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:30,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:30,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:40:30,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660115220] [2024-06-20 15:40:30,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:30,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:40:30,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:30,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:40:30,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:40:31,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:31,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2024-06-20 15:40:31,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:31,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:31,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:31,226 INFO L124 PetriNetUnfolderBase]: 201/362 cut-off events. [2024-06-20 15:40:31,226 INFO L125 PetriNetUnfolderBase]: For 703/703 co-relation queries the response was YES. [2024-06-20 15:40:31,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1164 conditions, 362 events. 201/362 cut-off events. For 703/703 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1232 event pairs, 49 based on Foata normal form. 3/363 useless extension candidates. Maximal degree in co-relation 1144. Up to 342 conditions per place. [2024-06-20 15:40:31,228 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 34 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-20 15:40:31,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 272 flow [2024-06-20 15:40:31,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:40:31,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:40:31,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-20 15:40:31,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-20 15:40:31,230 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 162 flow. Second operand 6 states and 71 transitions. [2024-06-20 15:40:31,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 272 flow [2024-06-20 15:40:31,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 248 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-20 15:40:31,232 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 171 flow [2024-06-20 15:40:31,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=171, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-20 15:40:31,248 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-20 15:40:31,249 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 171 flow [2024-06-20 15:40:31,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2024-06-20 15:40:31,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:31,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:31,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 15:40:31,249 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)] === [2024-06-20 15:40:31,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:31,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1294430037, now seen corresponding path program 1 times [2024-06-20 15:40:31,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:31,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356122185] [2024-06-20 15:40:31,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:31,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:31,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:31,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356122185] [2024-06-20 15:40:31,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356122185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:31,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:31,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:40:31,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380614597] [2024-06-20 15:40:31,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:31,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:40:31,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:31,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:40:31,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:40:31,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:31,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 171 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2024-06-20 15:40:31,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:31,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:31,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:31,942 INFO L124 PetriNetUnfolderBase]: 204/367 cut-off events. [2024-06-20 15:40:31,942 INFO L125 PetriNetUnfolderBase]: For 863/863 co-relation queries the response was YES. [2024-06-20 15:40:31,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1233 conditions, 367 events. 204/367 cut-off events. For 863/863 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1257 event pairs, 49 based on Foata normal form. 1/366 useless extension candidates. Maximal degree in co-relation 1211. Up to 340 conditions per place. [2024-06-20 15:40:31,944 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 37 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2024-06-20 15:40:31,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 319 flow [2024-06-20 15:40:31,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:40:31,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:40:31,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-06-20 15:40:31,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 15:40:31,945 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 171 flow. Second operand 6 states and 75 transitions. [2024-06-20 15:40:31,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 319 flow [2024-06-20 15:40:31,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 302 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-20 15:40:31,947 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 201 flow [2024-06-20 15:40:31,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=201, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-20 15:40:31,948 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-20 15:40:31,948 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 201 flow [2024-06-20 15:40:31,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2024-06-20 15:40:31,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:31,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:31,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 15:40:31,949 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)] === [2024-06-20 15:40:31,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:31,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1265593527, now seen corresponding path program 2 times [2024-06-20 15:40:31,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:31,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202108254] [2024-06-20 15:40:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:31,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:32,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:32,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202108254] [2024-06-20 15:40:32,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202108254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:32,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:32,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 15:40:32,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778259849] [2024-06-20 15:40:32,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:32,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 15:40:32,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:32,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 15:40:32,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 15:40:32,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:32,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 201 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2024-06-20 15:40:32,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:32,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:32,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:32,626 INFO L124 PetriNetUnfolderBase]: 202/364 cut-off events. [2024-06-20 15:40:32,626 INFO L125 PetriNetUnfolderBase]: For 1096/1096 co-relation queries the response was YES. [2024-06-20 15:40:32,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 364 events. 202/364 cut-off events. For 1096/1096 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1248 event pairs, 48 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 1263. Up to 350 conditions per place. [2024-06-20 15:40:32,628 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 36 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-06-20 15:40:32,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 303 flow [2024-06-20 15:40:32,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 15:40:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 15:40:32,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-20 15:40:32,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-20 15:40:32,631 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 201 flow. Second operand 6 states and 69 transitions. [2024-06-20 15:40:32,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 303 flow [2024-06-20 15:40:32,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 291 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-20 15:40:32,634 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 210 flow [2024-06-20 15:40:32,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2024-06-20 15:40:32,638 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-06-20 15:40:32,638 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 210 flow [2024-06-20 15:40:32,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 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) [2024-06-20 15:40:32,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:32,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:32,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 15:40:32,639 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)] === [2024-06-20 15:40:32,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:32,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1502645367, now seen corresponding path program 1 times [2024-06-20 15:40:32,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:32,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136469129] [2024-06-20 15:40:32,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:32,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:33,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:33,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136469129] [2024-06-20 15:40:33,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136469129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:33,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:33,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:40:33,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25019826] [2024-06-20 15:40:33,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:33,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:40:33,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:33,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:40:33,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:40:33,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:33,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 210 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:33,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:33,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:33,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:33,588 INFO L124 PetriNetUnfolderBase]: 205/369 cut-off events. [2024-06-20 15:40:33,589 INFO L125 PetriNetUnfolderBase]: For 1404/1404 co-relation queries the response was YES. [2024-06-20 15:40:33,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 369 events. 205/369 cut-off events. For 1404/1404 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1277 event pairs, 48 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 1329. Up to 325 conditions per place. [2024-06-20 15:40:33,591 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 40 selfloop transitions, 16 changer transitions 0/58 dead transitions. [2024-06-20 15:40:33,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 392 flow [2024-06-20 15:40:33,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:40:33,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:40:33,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-20 15:40:33,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-20 15:40:33,592 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 210 flow. Second operand 7 states and 88 transitions. [2024-06-20 15:40:33,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 392 flow [2024-06-20 15:40:33,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 371 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-20 15:40:33,595 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 250 flow [2024-06-20 15:40:33,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=250, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-06-20 15:40:33,595 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-06-20 15:40:33,595 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 250 flow [2024-06-20 15:40:33,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:33,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:33,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:33,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 15:40:33,596 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)] === [2024-06-20 15:40:33,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:33,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1767734308, now seen corresponding path program 1 times [2024-06-20 15:40:33,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:33,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409972676] [2024-06-20 15:40:33,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:33,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:34,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:34,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409972676] [2024-06-20 15:40:34,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409972676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:34,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:34,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:40:34,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38352873] [2024-06-20 15:40:34,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:34,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:40:34,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:34,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:40:34,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:40:34,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:34,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 250 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:34,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:34,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:34,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:34,413 INFO L124 PetriNetUnfolderBase]: 224/400 cut-off events. [2024-06-20 15:40:34,413 INFO L125 PetriNetUnfolderBase]: For 1956/1956 co-relation queries the response was YES. [2024-06-20 15:40:34,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 400 events. 224/400 cut-off events. For 1956/1956 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1400 event pairs, 51 based on Foata normal form. 3/401 useless extension candidates. Maximal degree in co-relation 1523. Up to 346 conditions per place. [2024-06-20 15:40:34,416 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 15 changer transitions 0/65 dead transitions. [2024-06-20 15:40:34,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 65 transitions, 454 flow [2024-06-20 15:40:34,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:40:34,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:40:34,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-20 15:40:34,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147465437788018 [2024-06-20 15:40:34,417 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 250 flow. Second operand 7 states and 90 transitions. [2024-06-20 15:40:34,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 65 transitions, 454 flow [2024-06-20 15:40:34,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 431 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-20 15:40:34,421 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 301 flow [2024-06-20 15:40:34,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=301, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-06-20 15:40:34,421 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2024-06-20 15:40:34,421 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 301 flow [2024-06-20 15:40:34,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:34,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:34,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:34,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 15:40:34,422 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)] === [2024-06-20 15:40:34,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:34,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1767734091, now seen corresponding path program 2 times [2024-06-20 15:40:34,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:34,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979132540] [2024-06-20 15:40:34,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:34,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:35,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:35,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:35,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979132540] [2024-06-20 15:40:35,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979132540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:35,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:35,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:40:35,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257052854] [2024-06-20 15:40:35,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:35,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:40:35,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:35,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:40:35,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:40:35,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:35,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 301 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:35,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:35,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:35,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:35,378 INFO L124 PetriNetUnfolderBase]: 227/405 cut-off events. [2024-06-20 15:40:35,378 INFO L125 PetriNetUnfolderBase]: For 2298/2298 co-relation queries the response was YES. [2024-06-20 15:40:35,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 405 events. 227/405 cut-off events. For 2298/2298 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1405 event pairs, 50 based on Foata normal form. 1/404 useless extension candidates. Maximal degree in co-relation 1666. Up to 376 conditions per place. [2024-06-20 15:40:35,380 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 47 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-06-20 15:40:35,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 457 flow [2024-06-20 15:40:35,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:40:35,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:40:35,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-20 15:40:35,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824884792626728 [2024-06-20 15:40:35,382 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 301 flow. Second operand 7 states and 83 transitions. [2024-06-20 15:40:35,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 457 flow [2024-06-20 15:40:35,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 446 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-20 15:40:35,386 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 337 flow [2024-06-20 15:40:35,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=337, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-06-20 15:40:35,386 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-20 15:40:35,386 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 337 flow [2024-06-20 15:40:35,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:35,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:35,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:35,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 15:40:35,387 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)] === [2024-06-20 15:40:35,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:35,388 INFO L85 PathProgramCache]: Analyzing trace with hash -578692951, now seen corresponding path program 3 times [2024-06-20 15:40:35,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:35,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758858723] [2024-06-20 15:40:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:35,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:36,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:36,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:36,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758858723] [2024-06-20 15:40:36,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758858723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:36,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:36,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:40:36,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822574359] [2024-06-20 15:40:36,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:36,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:40:36,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:36,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:40:36,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:40:36,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:36,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 337 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:36,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:36,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:36,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:36,309 INFO L124 PetriNetUnfolderBase]: 225/402 cut-off events. [2024-06-20 15:40:36,310 INFO L125 PetriNetUnfolderBase]: For 2673/2673 co-relation queries the response was YES. [2024-06-20 15:40:36,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 402 events. 225/402 cut-off events. For 2673/2673 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1402 event pairs, 49 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 1704. Up to 385 conditions per place. [2024-06-20 15:40:36,312 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 47 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2024-06-20 15:40:36,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 467 flow [2024-06-20 15:40:36,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:40:36,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:40:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-20 15:40:36,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-20 15:40:36,314 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 337 flow. Second operand 7 states and 78 transitions. [2024-06-20 15:40:36,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 467 flow [2024-06-20 15:40:36,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 438 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-20 15:40:36,317 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 333 flow [2024-06-20 15:40:36,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2024-06-20 15:40:36,318 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-20 15:40:36,318 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 333 flow [2024-06-20 15:40:36,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:36,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:36,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:36,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 15:40:36,319 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)] === [2024-06-20 15:40:36,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:36,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1974387748, now seen corresponding path program 2 times [2024-06-20 15:40:36,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:36,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653901735] [2024-06-20 15:40:36,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:36,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:36,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:36,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:36,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653901735] [2024-06-20 15:40:36,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653901735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:36,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:36,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:40:36,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020326573] [2024-06-20 15:40:36,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:36,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:40:36,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:36,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:40:36,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:40:36,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:36,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 333 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:36,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:36,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:36,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:37,200 INFO L124 PetriNetUnfolderBase]: 234/417 cut-off events. [2024-06-20 15:40:37,200 INFO L125 PetriNetUnfolderBase]: For 3291/3291 co-relation queries the response was YES. [2024-06-20 15:40:37,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1820 conditions, 417 events. 234/417 cut-off events. For 3291/3291 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1473 event pairs, 49 based on Foata normal form. 3/418 useless extension candidates. Maximal degree in co-relation 1787. Up to 377 conditions per place. [2024-06-20 15:40:37,203 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 51 selfloop transitions, 13 changer transitions 0/66 dead transitions. [2024-06-20 15:40:37,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 529 flow [2024-06-20 15:40:37,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:40:37,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:40:37,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-20 15:40:37,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-20 15:40:37,204 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 333 flow. Second operand 7 states and 85 transitions. [2024-06-20 15:40:37,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 529 flow [2024-06-20 15:40:37,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 494 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-20 15:40:37,208 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 343 flow [2024-06-20 15:40:37,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2024-06-20 15:40:37,209 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-20 15:40:37,209 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 343 flow [2024-06-20 15:40:37,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:37,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:37,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:37,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-20 15:40:37,210 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)] === [2024-06-20 15:40:37,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:37,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1508366944, now seen corresponding path program 3 times [2024-06-20 15:40:37,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:37,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467406906] [2024-06-20 15:40:37,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:37,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:37,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:37,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467406906] [2024-06-20 15:40:37,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467406906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:37,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:37,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 15:40:37,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851057305] [2024-06-20 15:40:37,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:37,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 15:40:37,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:37,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 15:40:37,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 15:40:37,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:37,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 343 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:37,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:37,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:37,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:38,063 INFO L124 PetriNetUnfolderBase]: 228/408 cut-off events. [2024-06-20 15:40:38,063 INFO L125 PetriNetUnfolderBase]: For 3569/3569 co-relation queries the response was YES. [2024-06-20 15:40:38,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1791 conditions, 408 events. 228/408 cut-off events. For 3569/3569 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1441 event pairs, 47 based on Foata normal form. 3/409 useless extension candidates. Maximal degree in co-relation 1758. Up to 385 conditions per place. [2024-06-20 15:40:38,066 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 51 selfloop transitions, 10 changer transitions 0/63 dead transitions. [2024-06-20 15:40:38,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 63 transitions, 487 flow [2024-06-20 15:40:38,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 15:40:38,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 15:40:38,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-20 15:40:38,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-20 15:40:38,068 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 343 flow. Second operand 7 states and 80 transitions. [2024-06-20 15:40:38,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 63 transitions, 487 flow [2024-06-20 15:40:38,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 63 transitions, 449 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-20 15:40:38,072 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 330 flow [2024-06-20 15:40:38,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=330, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2024-06-20 15:40:38,073 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-20 15:40:38,073 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 330 flow [2024-06-20 15:40:38,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:38,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:38,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:38,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-20 15:40:38,074 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)] === [2024-06-20 15:40:38,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:38,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1039463554, now seen corresponding path program 1 times [2024-06-20 15:40:38,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:38,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038973621] [2024-06-20 15:40:38,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:38,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:39,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:39,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038973621] [2024-06-20 15:40:39,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038973621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:39,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:39,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:39,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388848115] [2024-06-20 15:40:39,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:39,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:39,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:39,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:39,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:39,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:39,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 330 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:39,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:39,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:39,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:39,403 INFO L124 PetriNetUnfolderBase]: 234/418 cut-off events. [2024-06-20 15:40:39,404 INFO L125 PetriNetUnfolderBase]: For 3899/3899 co-relation queries the response was YES. [2024-06-20 15:40:39,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1837 conditions, 418 events. 234/418 cut-off events. For 3899/3899 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1494 event pairs, 46 based on Foata normal form. 2/418 useless extension candidates. Maximal degree in co-relation 1804. Up to 366 conditions per place. [2024-06-20 15:40:39,407 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 59 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-06-20 15:40:39,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 532 flow [2024-06-20 15:40:39,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:39,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:39,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-20 15:40:39,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-20 15:40:39,408 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 330 flow. Second operand 8 states and 98 transitions. [2024-06-20 15:40:39,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 532 flow [2024-06-20 15:40:39,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 506 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-20 15:40:39,413 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 352 flow [2024-06-20 15:40:39,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=352, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2024-06-20 15:40:39,414 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-20 15:40:39,414 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 352 flow [2024-06-20 15:40:39,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:39,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:39,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:39,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-20 15:40:39,414 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)] === [2024-06-20 15:40:39,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:39,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1039458718, now seen corresponding path program 1 times [2024-06-20 15:40:39,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:39,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17642824] [2024-06-20 15:40:39,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:39,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:40,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:40,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:40,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17642824] [2024-06-20 15:40:40,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17642824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:40,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:40,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:40,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738015483] [2024-06-20 15:40:40,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:40,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:40,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:40,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:40,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:40,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:40,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 352 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:40,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:40,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:40,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:40,482 INFO L124 PetriNetUnfolderBase]: 247/439 cut-off events. [2024-06-20 15:40:40,483 INFO L125 PetriNetUnfolderBase]: For 4537/4537 co-relation queries the response was YES. [2024-06-20 15:40:40,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2002 conditions, 439 events. 247/439 cut-off events. For 4537/4537 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1610 event pairs, 47 based on Foata normal form. 1/438 useless extension candidates. Maximal degree in co-relation 1968. Up to 331 conditions per place. [2024-06-20 15:40:40,485 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 51 selfloop transitions, 26 changer transitions 0/79 dead transitions. [2024-06-20 15:40:40,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 79 transitions, 602 flow [2024-06-20 15:40:40,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:40,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:40,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-20 15:40:40,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 15:40:40,488 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 352 flow. Second operand 8 states and 104 transitions. [2024-06-20 15:40:40,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 79 transitions, 602 flow [2024-06-20 15:40:40,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 79 transitions, 572 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-20 15:40:40,493 INFO L231 Difference]: Finished difference. Result has 74 places, 61 transitions, 422 flow [2024-06-20 15:40:40,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=422, PETRI_PLACES=74, PETRI_TRANSITIONS=61} [2024-06-20 15:40:40,494 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-06-20 15:40:40,494 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 61 transitions, 422 flow [2024-06-20 15:40:40,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:40,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:40,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:40,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-20 15:40:40,495 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)] === [2024-06-20 15:40:40,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:40,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1039458904, now seen corresponding path program 2 times [2024-06-20 15:40:40,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:40,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235712581] [2024-06-20 15:40:40,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:40,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:41,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:41,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:41,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235712581] [2024-06-20 15:40:41,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235712581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:41,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:41,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:41,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135532185] [2024-06-20 15:40:41,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:41,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:41,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:41,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:41,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:41,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:41,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 61 transitions, 422 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:41,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:41,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:41,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:41,520 INFO L124 PetriNetUnfolderBase]: 253/449 cut-off events. [2024-06-20 15:40:41,520 INFO L125 PetriNetUnfolderBase]: For 5412/5412 co-relation queries the response was YES. [2024-06-20 15:40:41,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 449 events. 253/449 cut-off events. For 5412/5412 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1655 event pairs, 49 based on Foata normal form. 2/449 useless extension candidates. Maximal degree in co-relation 2175. Up to 362 conditions per place. [2024-06-20 15:40:41,523 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 57 selfloop transitions, 24 changer transitions 0/83 dead transitions. [2024-06-20 15:40:41,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 83 transitions, 696 flow [2024-06-20 15:40:41,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:41,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:41,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-20 15:40:41,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-20 15:40:41,525 INFO L175 Difference]: Start difference. First operand has 74 places, 61 transitions, 422 flow. Second operand 8 states and 102 transitions. [2024-06-20 15:40:41,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 83 transitions, 696 flow [2024-06-20 15:40:41,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 666 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-20 15:40:41,531 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 481 flow [2024-06-20 15:40:41,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=481, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-06-20 15:40:41,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-20 15:40:41,532 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 481 flow [2024-06-20 15:40:41,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:41,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:41,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:41,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-20 15:40:41,532 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)] === [2024-06-20 15:40:41,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:41,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1593273604, now seen corresponding path program 2 times [2024-06-20 15:40:41,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:41,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476621413] [2024-06-20 15:40:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:41,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:42,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:42,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476621413] [2024-06-20 15:40:42,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476621413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:42,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:42,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:42,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901606432] [2024-06-20 15:40:42,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:42,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:42,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:42,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:42,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:42,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:42,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 481 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:42,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:42,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:42,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:42,532 INFO L124 PetriNetUnfolderBase]: 271/478 cut-off events. [2024-06-20 15:40:42,532 INFO L125 PetriNetUnfolderBase]: For 6404/6404 co-relation queries the response was YES. [2024-06-20 15:40:42,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2479 conditions, 478 events. 271/478 cut-off events. For 6404/6404 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1784 event pairs, 48 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 2441. Up to 401 conditions per place. [2024-06-20 15:40:42,536 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 62 selfloop transitions, 23 changer transitions 0/87 dead transitions. [2024-06-20 15:40:42,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 766 flow [2024-06-20 15:40:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:42,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-20 15:40:42,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-20 15:40:42,537 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 481 flow. Second operand 8 states and 103 transitions. [2024-06-20 15:40:42,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 87 transitions, 766 flow [2024-06-20 15:40:42,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 732 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-20 15:40:42,545 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 542 flow [2024-06-20 15:40:42,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=542, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2024-06-20 15:40:42,545 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-06-20 15:40:42,545 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 542 flow [2024-06-20 15:40:42,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:42,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:42,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:42,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-20 15:40:42,547 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)] === [2024-06-20 15:40:42,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:42,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1034810578, now seen corresponding path program 3 times [2024-06-20 15:40:42,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:42,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068285346] [2024-06-20 15:40:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:42,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:43,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:43,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:43,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068285346] [2024-06-20 15:40:43,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068285346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:43,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:43,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:43,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768504751] [2024-06-20 15:40:43,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:43,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:43,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:43,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:43,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:43,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:43,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 542 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:43,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:43,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:43,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:43,551 INFO L124 PetriNetUnfolderBase]: 265/469 cut-off events. [2024-06-20 15:40:43,551 INFO L125 PetriNetUnfolderBase]: For 6974/6974 co-relation queries the response was YES. [2024-06-20 15:40:43,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2494 conditions, 469 events. 265/469 cut-off events. For 6974/6974 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1752 event pairs, 48 based on Foata normal form. 3/470 useless extension candidates. Maximal degree in co-relation 2453. Up to 402 conditions per place. [2024-06-20 15:40:43,555 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 20 changer transitions 0/86 dead transitions. [2024-06-20 15:40:43,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 86 transitions, 758 flow [2024-06-20 15:40:43,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:43,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-20 15:40:43,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 15:40:43,556 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 542 flow. Second operand 8 states and 100 transitions. [2024-06-20 15:40:43,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 86 transitions, 758 flow [2024-06-20 15:40:43,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 86 transitions, 733 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-20 15:40:43,563 INFO L231 Difference]: Finished difference. Result has 87 places, 70 transitions, 563 flow [2024-06-20 15:40:43,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=87, PETRI_TRANSITIONS=70} [2024-06-20 15:40:43,564 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2024-06-20 15:40:43,564 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 70 transitions, 563 flow [2024-06-20 15:40:43,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:43,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:43,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:43,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-20 15:40:43,565 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)] === [2024-06-20 15:40:43,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:43,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1034817274, now seen corresponding path program 3 times [2024-06-20 15:40:43,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:43,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929689548] [2024-06-20 15:40:43,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:43,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:44,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:44,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929689548] [2024-06-20 15:40:44,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929689548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:44,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:44,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:44,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784968350] [2024-06-20 15:40:44,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:44,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:44,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:44,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:44,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:44,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:44,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 70 transitions, 563 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:44,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:44,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:44,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:44,565 INFO L124 PetriNetUnfolderBase]: 271/479 cut-off events. [2024-06-20 15:40:44,566 INFO L125 PetriNetUnfolderBase]: For 7569/7569 co-relation queries the response was YES. [2024-06-20 15:40:44,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2630 conditions, 479 events. 271/479 cut-off events. For 7569/7569 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1791 event pairs, 51 based on Foata normal form. 2/479 useless extension candidates. Maximal degree in co-relation 2587. Up to 444 conditions per place. [2024-06-20 15:40:44,569 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 67 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2024-06-20 15:40:44,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 84 transitions, 775 flow [2024-06-20 15:40:44,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:44,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:44,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-20 15:40:44,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 15:40:44,571 INFO L175 Difference]: Start difference. First operand has 87 places, 70 transitions, 563 flow. Second operand 8 states and 93 transitions. [2024-06-20 15:40:44,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 84 transitions, 775 flow [2024-06-20 15:40:44,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 84 transitions, 730 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-20 15:40:44,580 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 575 flow [2024-06-20 15:40:44,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=575, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2024-06-20 15:40:44,581 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-20 15:40:44,582 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 575 flow [2024-06-20 15:40:44,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:44,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:44,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:44,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-20 15:40:44,582 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)] === [2024-06-20 15:40:44,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:44,583 INFO L85 PathProgramCache]: Analyzing trace with hash -759604848, now seen corresponding path program 4 times [2024-06-20 15:40:44,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:44,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324073431] [2024-06-20 15:40:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:44,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:45,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:45,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:45,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324073431] [2024-06-20 15:40:45,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324073431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:45,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:45,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:45,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122022601] [2024-06-20 15:40:45,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:45,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:45,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:45,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:45,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:45,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:45,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 575 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:45,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:45,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:45,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:45,588 INFO L124 PetriNetUnfolderBase]: 280/494 cut-off events. [2024-06-20 15:40:45,589 INFO L125 PetriNetUnfolderBase]: For 8514/8514 co-relation queries the response was YES. [2024-06-20 15:40:45,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2719 conditions, 494 events. 280/494 cut-off events. For 8514/8514 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1873 event pairs, 48 based on Foata normal form. 3/495 useless extension candidates. Maximal degree in co-relation 2675. Up to 448 conditions per place. [2024-06-20 15:40:45,592 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 16 changer transitions 0/88 dead transitions. [2024-06-20 15:40:45,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 812 flow [2024-06-20 15:40:45,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:45,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-20 15:40:45,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-20 15:40:45,593 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 575 flow. Second operand 8 states and 95 transitions. [2024-06-20 15:40:45,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 812 flow [2024-06-20 15:40:45,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 88 transitions, 775 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-20 15:40:45,601 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 607 flow [2024-06-20 15:40:45,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=607, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2024-06-20 15:40:45,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-20 15:40:45,602 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 607 flow [2024-06-20 15:40:45,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:45,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:45,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:45,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-20 15:40:45,602 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)] === [2024-06-20 15:40:45,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:45,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1085049894, now seen corresponding path program 1 times [2024-06-20 15:40:45,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:45,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689425173] [2024-06-20 15:40:45,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:45,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:46,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:46,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:46,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689425173] [2024-06-20 15:40:46,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689425173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:46,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:46,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:46,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729507143] [2024-06-20 15:40:46,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:46,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:46,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:46,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:46,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:46,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:46,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 607 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:46,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:46,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:46,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:46,579 INFO L124 PetriNetUnfolderBase]: 276/488 cut-off events. [2024-06-20 15:40:46,580 INFO L125 PetriNetUnfolderBase]: For 8743/8743 co-relation queries the response was YES. [2024-06-20 15:40:46,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2714 conditions, 488 events. 276/488 cut-off events. For 8743/8743 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1835 event pairs, 49 based on Foata normal form. 2/488 useless extension candidates. Maximal degree in co-relation 2669. Up to 460 conditions per place. [2024-06-20 15:40:46,583 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 73 selfloop transitions, 12 changer transitions 0/87 dead transitions. [2024-06-20 15:40:46,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 87 transitions, 815 flow [2024-06-20 15:40:46,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:46,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-20 15:40:46,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-20 15:40:46,585 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 607 flow. Second operand 8 states and 89 transitions. [2024-06-20 15:40:46,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 87 transitions, 815 flow [2024-06-20 15:40:46,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 87 transitions, 777 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-20 15:40:46,592 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 618 flow [2024-06-20 15:40:46,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=618, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2024-06-20 15:40:46,593 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-20 15:40:46,593 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 618 flow [2024-06-20 15:40:46,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:46,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:46,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:46,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-20 15:40:46,594 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)] === [2024-06-20 15:40:46,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:46,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1829455474, now seen corresponding path program 5 times [2024-06-20 15:40:46,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:46,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021982229] [2024-06-20 15:40:46,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:46,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:47,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:47,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:47,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021982229] [2024-06-20 15:40:47,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021982229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:47,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:47,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:47,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967400345] [2024-06-20 15:40:47,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:47,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:47,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:47,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:47,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:47,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:47,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 618 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:47,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:47,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:47,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:47,655 INFO L124 PetriNetUnfolderBase]: 275/487 cut-off events. [2024-06-20 15:40:47,655 INFO L125 PetriNetUnfolderBase]: For 9157/9157 co-relation queries the response was YES. [2024-06-20 15:40:47,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2706 conditions, 487 events. 275/487 cut-off events. For 9157/9157 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1845 event pairs, 48 based on Foata normal form. 3/488 useless extension candidates. Maximal degree in co-relation 2660. Up to 453 conditions per place. [2024-06-20 15:40:47,659 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-06-20 15:40:47,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 844 flow [2024-06-20 15:40:47,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:47,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-20 15:40:47,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-20 15:40:47,660 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 618 flow. Second operand 8 states and 91 transitions. [2024-06-20 15:40:47,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 844 flow [2024-06-20 15:40:47,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 808 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-20 15:40:47,670 INFO L231 Difference]: Finished difference. Result has 94 places, 79 transitions, 638 flow [2024-06-20 15:40:47,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=638, PETRI_PLACES=94, PETRI_TRANSITIONS=79} [2024-06-20 15:40:47,670 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-20 15:40:47,670 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 79 transitions, 638 flow [2024-06-20 15:40:47,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:47,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:47,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:47,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-20 15:40:47,671 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)] === [2024-06-20 15:40:47,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:47,671 INFO L85 PathProgramCache]: Analyzing trace with hash -485501606, now seen corresponding path program 4 times [2024-06-20 15:40:47,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:47,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327697053] [2024-06-20 15:40:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:47,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:48,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:48,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327697053] [2024-06-20 15:40:48,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327697053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:48,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:48,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:48,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555642236] [2024-06-20 15:40:48,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:48,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:48,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:48,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:48,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:48,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:48,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 79 transitions, 638 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:48,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:48,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:48,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:48,714 INFO L124 PetriNetUnfolderBase]: 273/484 cut-off events. [2024-06-20 15:40:48,715 INFO L125 PetriNetUnfolderBase]: For 9198/9198 co-relation queries the response was YES. [2024-06-20 15:40:48,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2709 conditions, 484 events. 273/484 cut-off events. For 9198/9198 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1829 event pairs, 49 based on Foata normal form. 1/483 useless extension candidates. Maximal degree in co-relation 2662. Up to 464 conditions per place. [2024-06-20 15:40:48,718 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 75 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2024-06-20 15:40:48,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 89 transitions, 846 flow [2024-06-20 15:40:48,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:48,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:48,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-20 15:40:48,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-20 15:40:48,727 INFO L175 Difference]: Start difference. First operand has 94 places, 79 transitions, 638 flow. Second operand 8 states and 87 transitions. [2024-06-20 15:40:48,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 89 transitions, 846 flow [2024-06-20 15:40:48,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 89 transitions, 801 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-20 15:40:48,737 INFO L231 Difference]: Finished difference. Result has 95 places, 81 transitions, 642 flow [2024-06-20 15:40:48,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=642, PETRI_PLACES=95, PETRI_TRANSITIONS=81} [2024-06-20 15:40:48,738 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-20 15:40:48,738 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 81 transitions, 642 flow [2024-06-20 15:40:48,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:48,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:48,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:48,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-20 15:40:48,739 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)] === [2024-06-20 15:40:48,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:48,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1076472256, now seen corresponding path program 6 times [2024-06-20 15:40:48,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:48,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753492708] [2024-06-20 15:40:48,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:48,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:49,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:49,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:49,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753492708] [2024-06-20 15:40:49,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753492708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:49,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:49,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 15:40:49,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701970887] [2024-06-20 15:40:49,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:49,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 15:40:49,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:49,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 15:40:49,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 15:40:49,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:49,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 81 transitions, 642 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:49,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:49,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:49,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:49,653 INFO L124 PetriNetUnfolderBase]: 271/481 cut-off events. [2024-06-20 15:40:49,653 INFO L125 PetriNetUnfolderBase]: For 9622/9622 co-relation queries the response was YES. [2024-06-20 15:40:49,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2682 conditions, 481 events. 271/481 cut-off events. For 9622/9622 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1823 event pairs, 45 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 2635. Up to 418 conditions per place. [2024-06-20 15:40:49,657 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 68 selfloop transitions, 22 changer transitions 0/92 dead transitions. [2024-06-20 15:40:49,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 92 transitions, 852 flow [2024-06-20 15:40:49,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:49,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-20 15:40:49,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-20 15:40:49,658 INFO L175 Difference]: Start difference. First operand has 95 places, 81 transitions, 642 flow. Second operand 8 states and 94 transitions. [2024-06-20 15:40:49,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 92 transitions, 852 flow [2024-06-20 15:40:49,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 92 transitions, 821 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-20 15:40:49,667 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 660 flow [2024-06-20 15:40:49,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=660, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2024-06-20 15:40:49,668 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-20 15:40:49,668 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 660 flow [2024-06-20 15:40:49,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:49,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:49,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:49,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-20 15:40:49,669 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)] === [2024-06-20 15:40:49,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:49,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1085060806, now seen corresponding path program 1 times [2024-06-20 15:40:49,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:49,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225545027] [2024-06-20 15:40:49,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:49,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:50,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:50,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:50,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225545027] [2024-06-20 15:40:50,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225545027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:50,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:50,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:40:50,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498699493] [2024-06-20 15:40:50,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:50,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:40:50,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:50,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:40:50,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:40:50,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:50,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 660 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:50,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:50,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:50,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:50,965 INFO L124 PetriNetUnfolderBase]: 268/476 cut-off events. [2024-06-20 15:40:50,965 INFO L125 PetriNetUnfolderBase]: For 10170/10170 co-relation queries the response was YES. [2024-06-20 15:40:50,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2680 conditions, 476 events. 268/476 cut-off events. For 10170/10170 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1763 event pairs, 46 based on Foata normal form. 2/476 useless extension candidates. Maximal degree in co-relation 2632. Up to 450 conditions per place. [2024-06-20 15:40:50,970 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 78 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2024-06-20 15:40:50,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 91 transitions, 860 flow [2024-06-20 15:40:50,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 15:40:50,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 15:40:50,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-20 15:40:50,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-20 15:40:50,972 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 660 flow. Second operand 8 states and 87 transitions. [2024-06-20 15:40:50,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 91 transitions, 860 flow [2024-06-20 15:40:50,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 91 transitions, 767 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-20 15:40:50,981 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 593 flow [2024-06-20 15:40:50,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=593, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2024-06-20 15:40:50,982 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-20 15:40:50,982 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 593 flow [2024-06-20 15:40:50,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:50,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:50,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:50,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-20 15:40:50,982 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)] === [2024-06-20 15:40:50,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:50,983 INFO L85 PathProgramCache]: Analyzing trace with hash 929491443, now seen corresponding path program 1 times [2024-06-20 15:40:50,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:50,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374074409] [2024-06-20 15:40:50,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:50,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:51,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:51,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:51,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374074409] [2024-06-20 15:40:51,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374074409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:51,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:51,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:40:51,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730312323] [2024-06-20 15:40:51,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:51,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:40:51,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:51,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:40:51,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:40:51,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:51,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 593 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:51,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:51,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:51,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:52,124 INFO L124 PetriNetUnfolderBase]: 274/486 cut-off events. [2024-06-20 15:40:52,124 INFO L125 PetriNetUnfolderBase]: For 10841/10841 co-relation queries the response was YES. [2024-06-20 15:40:52,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2639 conditions, 486 events. 274/486 cut-off events. For 10841/10841 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1844 event pairs, 49 based on Foata normal form. 2/486 useless extension candidates. Maximal degree in co-relation 2591. Up to 426 conditions per place. [2024-06-20 15:40:52,127 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 86 selfloop transitions, 15 changer transitions 0/103 dead transitions. [2024-06-20 15:40:52,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 103 transitions, 867 flow [2024-06-20 15:40:52,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:40:52,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:40:52,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-20 15:40:52,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 15:40:52,130 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 593 flow. Second operand 9 states and 108 transitions. [2024-06-20 15:40:52,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 103 transitions, 867 flow [2024-06-20 15:40:52,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 103 transitions, 841 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-20 15:40:52,150 INFO L231 Difference]: Finished difference. Result has 100 places, 83 transitions, 622 flow [2024-06-20 15:40:52,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=622, PETRI_PLACES=100, PETRI_TRANSITIONS=83} [2024-06-20 15:40:52,150 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-20 15:40:52,151 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 83 transitions, 622 flow [2024-06-20 15:40:52,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:52,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:52,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:52,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-20 15:40:52,151 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)] === [2024-06-20 15:40:52,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:52,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1071738663, now seen corresponding path program 2 times [2024-06-20 15:40:52,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:52,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030660161] [2024-06-20 15:40:52,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:52,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:52,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:52,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030660161] [2024-06-20 15:40:52,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030660161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:52,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:52,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:40:52,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451092455] [2024-06-20 15:40:52,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:52,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:40:52,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:52,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:40:52,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:40:53,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:53,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 83 transitions, 622 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:53,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:53,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:53,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:53,214 INFO L124 PetriNetUnfolderBase]: 310/544 cut-off events. [2024-06-20 15:40:53,215 INFO L125 PetriNetUnfolderBase]: For 13896/13896 co-relation queries the response was YES. [2024-06-20 15:40:53,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 544 events. 310/544 cut-off events. For 13896/13896 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2129 event pairs, 46 based on Foata normal form. 2/544 useless extension candidates. Maximal degree in co-relation 3074. Up to 300 conditions per place. [2024-06-20 15:40:53,219 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 68 selfloop transitions, 44 changer transitions 0/114 dead transitions. [2024-06-20 15:40:53,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 114 transitions, 1102 flow [2024-06-20 15:40:53,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:40:53,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:40:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-20 15:40:53,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43727598566308246 [2024-06-20 15:40:53,221 INFO L175 Difference]: Start difference. First operand has 100 places, 83 transitions, 622 flow. Second operand 9 states and 122 transitions. [2024-06-20 15:40:53,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 114 transitions, 1102 flow [2024-06-20 15:40:53,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 114 transitions, 1063 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-20 15:40:53,237 INFO L231 Difference]: Finished difference. Result has 103 places, 91 transitions, 787 flow [2024-06-20 15:40:53,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=787, PETRI_PLACES=103, PETRI_TRANSITIONS=91} [2024-06-20 15:40:53,242 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-20 15:40:53,242 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 91 transitions, 787 flow [2024-06-20 15:40:53,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:53,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:53,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:53,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-20 15:40:53,243 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)] === [2024-06-20 15:40:53,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:53,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2019920283, now seen corresponding path program 3 times [2024-06-20 15:40:53,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:53,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395962260] [2024-06-20 15:40:53,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:53,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:54,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:54,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:54,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395962260] [2024-06-20 15:40:54,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395962260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:54,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:54,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:40:54,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499456967] [2024-06-20 15:40:54,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:54,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:40:54,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:54,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:40:54,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:40:54,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:54,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 787 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:54,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:54,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:54,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:54,414 INFO L124 PetriNetUnfolderBase]: 308/541 cut-off events. [2024-06-20 15:40:54,414 INFO L125 PetriNetUnfolderBase]: For 14624/14624 co-relation queries the response was YES. [2024-06-20 15:40:54,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3293 conditions, 541 events. 308/541 cut-off events. For 14624/14624 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2116 event pairs, 43 based on Foata normal form. 1/540 useless extension candidates. Maximal degree in co-relation 3242. Up to 360 conditions per place. [2024-06-20 15:40:54,418 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 78 selfloop transitions, 41 changer transitions 0/121 dead transitions. [2024-06-20 15:40:54,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 121 transitions, 1225 flow [2024-06-20 15:40:54,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:40:54,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:40:54,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-20 15:40:54,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-20 15:40:54,419 INFO L175 Difference]: Start difference. First operand has 103 places, 91 transitions, 787 flow. Second operand 9 states and 116 transitions. [2024-06-20 15:40:54,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 121 transitions, 1225 flow [2024-06-20 15:40:54,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 121 transitions, 1153 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-20 15:40:54,435 INFO L231 Difference]: Finished difference. Result has 111 places, 102 transitions, 949 flow [2024-06-20 15:40:54,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=949, PETRI_PLACES=111, PETRI_TRANSITIONS=102} [2024-06-20 15:40:54,438 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-20 15:40:54,438 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 102 transitions, 949 flow [2024-06-20 15:40:54,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:54,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:54,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:54,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-20 15:40:54,439 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)] === [2024-06-20 15:40:54,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:54,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2136519080, now seen corresponding path program 1 times [2024-06-20 15:40:54,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:54,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82023023] [2024-06-20 15:40:54,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:54,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:55,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:55,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:55,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82023023] [2024-06-20 15:40:55,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82023023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:55,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:55,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:40:55,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837460694] [2024-06-20 15:40:55,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:55,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:40:55,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:55,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:40:55,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:40:55,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:55,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 102 transitions, 949 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:55,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:55,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:55,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:55,746 INFO L124 PetriNetUnfolderBase]: 324/567 cut-off events. [2024-06-20 15:40:55,747 INFO L125 PetriNetUnfolderBase]: For 17092/17092 co-relation queries the response was YES. [2024-06-20 15:40:55,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3606 conditions, 567 events. 324/567 cut-off events. For 17092/17092 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2251 event pairs, 51 based on Foata normal form. 2/567 useless extension candidates. Maximal degree in co-relation 3551. Up to 428 conditions per place. [2024-06-20 15:40:55,749 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 88 selfloop transitions, 35 changer transitions 0/125 dead transitions. [2024-06-20 15:40:55,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 125 transitions, 1333 flow [2024-06-20 15:40:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:40:55,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:40:55,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-20 15:40:55,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-20 15:40:55,751 INFO L175 Difference]: Start difference. First operand has 111 places, 102 transitions, 949 flow. Second operand 9 states and 114 transitions. [2024-06-20 15:40:55,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 125 transitions, 1333 flow [2024-06-20 15:40:55,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 125 transitions, 1296 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-20 15:40:55,771 INFO L231 Difference]: Finished difference. Result has 117 places, 106 transitions, 1027 flow [2024-06-20 15:40:55,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1027, PETRI_PLACES=117, PETRI_TRANSITIONS=106} [2024-06-20 15:40:55,771 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-20 15:40:55,772 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 106 transitions, 1027 flow [2024-06-20 15:40:55,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:55,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:55,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:55,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-20 15:40:55,772 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)] === [2024-06-20 15:40:55,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:55,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2014557903, now seen corresponding path program 4 times [2024-06-20 15:40:55,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:55,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72607755] [2024-06-20 15:40:55,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:55,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:56,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:56,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72607755] [2024-06-20 15:40:56,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72607755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:56,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:56,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:40:56,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003462361] [2024-06-20 15:40:56,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:56,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:40:56,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:56,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:40:56,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:40:56,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:56,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 106 transitions, 1027 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:56,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:56,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:56,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:56,913 INFO L124 PetriNetUnfolderBase]: 370/641 cut-off events. [2024-06-20 15:40:56,913 INFO L125 PetriNetUnfolderBase]: For 22096/22096 co-relation queries the response was YES. [2024-06-20 15:40:56,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4409 conditions, 641 events. 370/641 cut-off events. For 22096/22096 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2612 event pairs, 56 based on Foata normal form. 2/641 useless extension candidates. Maximal degree in co-relation 4352. Up to 512 conditions per place. [2024-06-20 15:40:56,917 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 102 selfloop transitions, 34 changer transitions 0/138 dead transitions. [2024-06-20 15:40:56,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 138 transitions, 1635 flow [2024-06-20 15:40:56,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:40:56,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:40:56,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-20 15:40:56,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-20 15:40:56,919 INFO L175 Difference]: Start difference. First operand has 117 places, 106 transitions, 1027 flow. Second operand 9 states and 118 transitions. [2024-06-20 15:40:56,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 138 transitions, 1635 flow [2024-06-20 15:40:56,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 138 transitions, 1592 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-20 15:40:56,940 INFO L231 Difference]: Finished difference. Result has 122 places, 117 transitions, 1227 flow [2024-06-20 15:40:56,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1227, PETRI_PLACES=122, PETRI_TRANSITIONS=117} [2024-06-20 15:40:56,940 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-20 15:40:56,941 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 117 transitions, 1227 flow [2024-06-20 15:40:56,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:56,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:56,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:56,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-20 15:40:56,941 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)] === [2024-06-20 15:40:56,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:56,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1077308433, now seen corresponding path program 5 times [2024-06-20 15:40:56,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:56,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916515108] [2024-06-20 15:40:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:56,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:57,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:57,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916515108] [2024-06-20 15:40:57,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916515108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:57,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:57,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:40:57,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571269668] [2024-06-20 15:40:57,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:57,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:40:57,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:57,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:40:57,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:40:57,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:57,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 117 transitions, 1227 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:57,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:57,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:57,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:58,029 INFO L124 PetriNetUnfolderBase]: 358/623 cut-off events. [2024-06-20 15:40:58,029 INFO L125 PetriNetUnfolderBase]: For 22738/22738 co-relation queries the response was YES. [2024-06-20 15:40:58,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4276 conditions, 623 events. 358/623 cut-off events. For 22738/22738 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2529 event pairs, 56 based on Foata normal form. 6/627 useless extension candidates. Maximal degree in co-relation 4216. Up to 534 conditions per place. [2024-06-20 15:40:58,033 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 108 selfloop transitions, 25 changer transitions 0/135 dead transitions. [2024-06-20 15:40:58,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 135 transitions, 1542 flow [2024-06-20 15:40:58,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:40:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:40:58,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-20 15:40:58,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-20 15:40:58,034 INFO L175 Difference]: Start difference. First operand has 122 places, 117 transitions, 1227 flow. Second operand 9 states and 112 transitions. [2024-06-20 15:40:58,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 135 transitions, 1542 flow [2024-06-20 15:40:58,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 135 transitions, 1477 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-20 15:40:58,061 INFO L231 Difference]: Finished difference. Result has 127 places, 117 transitions, 1220 flow [2024-06-20 15:40:58,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1220, PETRI_PLACES=127, PETRI_TRANSITIONS=117} [2024-06-20 15:40:58,062 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-20 15:40:58,062 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 1220 flow [2024-06-20 15:40:58,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:58,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:58,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:58,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-20 15:40:58,063 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)] === [2024-06-20 15:40:58,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:58,063 INFO L85 PathProgramCache]: Analyzing trace with hash -2014557686, now seen corresponding path program 2 times [2024-06-20 15:40:58,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:58,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142723071] [2024-06-20 15:40:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:58,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:40:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:40:59,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:40:59,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142723071] [2024-06-20 15:40:59,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142723071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:40:59,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:40:59,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:40:59,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303431945] [2024-06-20 15:40:59,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:40:59,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:40:59,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:40:59,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:40:59,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:40:59,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:40:59,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 117 transitions, 1220 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:59,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:40:59,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:40:59,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:40:59,828 INFO L124 PetriNetUnfolderBase]: 374/649 cut-off events. [2024-06-20 15:40:59,828 INFO L125 PetriNetUnfolderBase]: For 23092/23092 co-relation queries the response was YES. [2024-06-20 15:40:59,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4505 conditions, 649 events. 374/649 cut-off events. For 23092/23092 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2682 event pairs, 59 based on Foata normal form. 2/649 useless extension candidates. Maximal degree in co-relation 4443. Up to 561 conditions per place. [2024-06-20 15:40:59,832 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 111 selfloop transitions, 26 changer transitions 0/139 dead transitions. [2024-06-20 15:40:59,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 139 transitions, 1640 flow [2024-06-20 15:40:59,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:40:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:40:59,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-20 15:40:59,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-20 15:40:59,834 INFO L175 Difference]: Start difference. First operand has 127 places, 117 transitions, 1220 flow. Second operand 9 states and 113 transitions. [2024-06-20 15:40:59,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 139 transitions, 1640 flow [2024-06-20 15:40:59,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 139 transitions, 1574 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-20 15:40:59,866 INFO L231 Difference]: Finished difference. Result has 128 places, 121 transitions, 1255 flow [2024-06-20 15:40:59,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1255, PETRI_PLACES=128, PETRI_TRANSITIONS=121} [2024-06-20 15:40:59,866 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-20 15:40:59,867 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 121 transitions, 1255 flow [2024-06-20 15:40:59,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:40:59,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:40:59,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:40:59,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-20 15:40:59,867 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)] === [2024-06-20 15:40:59,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:40:59,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1077101043, now seen corresponding path program 6 times [2024-06-20 15:40:59,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:40:59,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223389122] [2024-06-20 15:40:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:40:59,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:40:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:00,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:00,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223389122] [2024-06-20 15:41:00,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223389122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:00,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:00,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:00,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693568033] [2024-06-20 15:41:00,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:00,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:00,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:00,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:00,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:00,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:00,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 121 transitions, 1255 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:00,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:00,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:00,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:01,147 INFO L124 PetriNetUnfolderBase]: 372/646 cut-off events. [2024-06-20 15:41:01,148 INFO L125 PetriNetUnfolderBase]: For 23351/23351 co-relation queries the response was YES. [2024-06-20 15:41:01,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4499 conditions, 646 events. 372/646 cut-off events. For 23351/23351 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2664 event pairs, 54 based on Foata normal form. 1/645 useless extension candidates. Maximal degree in co-relation 4436. Up to 553 conditions per place. [2024-06-20 15:41:01,152 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 29 changer transitions 0/141 dead transitions. [2024-06-20 15:41:01,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 141 transitions, 1599 flow [2024-06-20 15:41:01,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:01,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-20 15:41:01,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-20 15:41:01,153 INFO L175 Difference]: Start difference. First operand has 128 places, 121 transitions, 1255 flow. Second operand 9 states and 114 transitions. [2024-06-20 15:41:01,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 141 transitions, 1599 flow [2024-06-20 15:41:01,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 141 transitions, 1563 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-20 15:41:01,186 INFO L231 Difference]: Finished difference. Result has 133 places, 124 transitions, 1320 flow [2024-06-20 15:41:01,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1320, PETRI_PLACES=133, PETRI_TRANSITIONS=124} [2024-06-20 15:41:01,187 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-20 15:41:01,187 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 124 transitions, 1320 flow [2024-06-20 15:41:01,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:01,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:01,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:01,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-20 15:41:01,187 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)] === [2024-06-20 15:41:01,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:01,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1077308650, now seen corresponding path program 3 times [2024-06-20 15:41:01,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:01,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237499187] [2024-06-20 15:41:01,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:01,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:02,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:02,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237499187] [2024-06-20 15:41:02,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237499187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:02,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:02,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:02,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342853615] [2024-06-20 15:41:02,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:02,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:02,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:02,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:02,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:02,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:02,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 124 transitions, 1320 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:02,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:02,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:02,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:02,734 INFO L124 PetriNetUnfolderBase]: 368/640 cut-off events. [2024-06-20 15:41:02,734 INFO L125 PetriNetUnfolderBase]: For 24113/24113 co-relation queries the response was YES. [2024-06-20 15:41:02,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4535 conditions, 640 events. 368/640 cut-off events. For 24113/24113 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2633 event pairs, 55 based on Foata normal form. 2/640 useless extension candidates. Maximal degree in co-relation 4469. Up to 567 conditions per place. [2024-06-20 15:41:02,739 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 117 selfloop transitions, 22 changer transitions 0/141 dead transitions. [2024-06-20 15:41:02,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 141 transitions, 1638 flow [2024-06-20 15:41:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:02,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:02,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-20 15:41:02,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-20 15:41:02,753 INFO L175 Difference]: Start difference. First operand has 133 places, 124 transitions, 1320 flow. Second operand 9 states and 110 transitions. [2024-06-20 15:41:02,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 141 transitions, 1638 flow [2024-06-20 15:41:02,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 141 transitions, 1591 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-20 15:41:02,792 INFO L231 Difference]: Finished difference. Result has 137 places, 124 transitions, 1322 flow [2024-06-20 15:41:02,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1322, PETRI_PLACES=137, PETRI_TRANSITIONS=124} [2024-06-20 15:41:02,793 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-20 15:41:02,793 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 124 transitions, 1322 flow [2024-06-20 15:41:02,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:02,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:02,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:02,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-20 15:41:02,794 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)] === [2024-06-20 15:41:02,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:02,794 INFO L85 PathProgramCache]: Analyzing trace with hash 300593953, now seen corresponding path program 7 times [2024-06-20 15:41:02,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:02,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933664163] [2024-06-20 15:41:02,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:02,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:03,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:03,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933664163] [2024-06-20 15:41:03,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933664163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:03,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:03,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:03,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347877014] [2024-06-20 15:41:03,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:03,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:03,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:03,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:03,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:03,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:03,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 124 transitions, 1322 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:03,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:03,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:03,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:04,034 INFO L124 PetriNetUnfolderBase]: 377/655 cut-off events. [2024-06-20 15:41:04,035 INFO L125 PetriNetUnfolderBase]: For 26000/26000 co-relation queries the response was YES. [2024-06-20 15:41:04,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4683 conditions, 655 events. 377/655 cut-off events. For 26000/26000 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2705 event pairs, 54 based on Foata normal form. 3/656 useless extension candidates. Maximal degree in co-relation 4615. Up to 610 conditions per place. [2024-06-20 15:41:04,038 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 122 selfloop transitions, 16 changer transitions 0/140 dead transitions. [2024-06-20 15:41:04,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 140 transitions, 1671 flow [2024-06-20 15:41:04,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:04,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-20 15:41:04,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-20 15:41:04,039 INFO L175 Difference]: Start difference. First operand has 137 places, 124 transitions, 1322 flow. Second operand 9 states and 102 transitions. [2024-06-20 15:41:04,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 140 transitions, 1671 flow [2024-06-20 15:41:04,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 140 transitions, 1614 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-20 15:41:04,075 INFO L231 Difference]: Finished difference. Result has 138 places, 127 transitions, 1352 flow [2024-06-20 15:41:04,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1352, PETRI_PLACES=138, PETRI_TRANSITIONS=127} [2024-06-20 15:41:04,076 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-20 15:41:04,076 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 127 transitions, 1352 flow [2024-06-20 15:41:04,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:04,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:04,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:04,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-20 15:41:04,076 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)] === [2024-06-20 15:41:04,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:04,076 INFO L85 PathProgramCache]: Analyzing trace with hash -723190932, now seen corresponding path program 4 times [2024-06-20 15:41:04,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:04,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112438660] [2024-06-20 15:41:04,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:04,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:04,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:04,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112438660] [2024-06-20 15:41:04,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112438660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:04,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:04,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:04,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386635289] [2024-06-20 15:41:04,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:04,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:04,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:04,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:04,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:04,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:04,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 127 transitions, 1352 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:04,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:04,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:04,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:05,283 INFO L124 PetriNetUnfolderBase]: 373/649 cut-off events. [2024-06-20 15:41:05,283 INFO L125 PetriNetUnfolderBase]: For 25351/25351 co-relation queries the response was YES. [2024-06-20 15:41:05,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4613 conditions, 649 events. 373/649 cut-off events. For 25351/25351 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2681 event pairs, 55 based on Foata normal form. 2/649 useless extension candidates. Maximal degree in co-relation 4544. Up to 613 conditions per place. [2024-06-20 15:41:05,288 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 125 selfloop transitions, 14 changer transitions 0/141 dead transitions. [2024-06-20 15:41:05,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 141 transitions, 1676 flow [2024-06-20 15:41:05,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:05,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:05,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-20 15:41:05,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 15:41:05,297 INFO L175 Difference]: Start difference. First operand has 138 places, 127 transitions, 1352 flow. Second operand 9 states and 99 transitions. [2024-06-20 15:41:05,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 141 transitions, 1676 flow [2024-06-20 15:41:05,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 141 transitions, 1626 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:05,338 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 1359 flow [2024-06-20 15:41:05,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1359, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2024-06-20 15:41:05,339 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-20 15:41:05,339 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 1359 flow [2024-06-20 15:41:05,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:05,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:05,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:05,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-20 15:41:05,340 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)] === [2024-06-20 15:41:05,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:05,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1413587014, now seen corresponding path program 5 times [2024-06-20 15:41:05,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:05,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52840463] [2024-06-20 15:41:05,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:05,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:06,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:06,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:06,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52840463] [2024-06-20 15:41:06,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52840463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:06,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:06,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:06,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347410088] [2024-06-20 15:41:06,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:06,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:06,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:06,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:06,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:06,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:06,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 1359 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:06,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:06,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:06,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:06,756 INFO L124 PetriNetUnfolderBase]: 379/659 cut-off events. [2024-06-20 15:41:06,756 INFO L125 PetriNetUnfolderBase]: For 26634/26634 co-relation queries the response was YES. [2024-06-20 15:41:06,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4683 conditions, 659 events. 379/659 cut-off events. For 26634/26634 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2753 event pairs, 55 based on Foata normal form. 2/659 useless extension candidates. Maximal degree in co-relation 4613. Up to 619 conditions per place. [2024-06-20 15:41:06,760 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 126 selfloop transitions, 17 changer transitions 0/145 dead transitions. [2024-06-20 15:41:06,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 145 transitions, 1708 flow [2024-06-20 15:41:06,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:06,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-20 15:41:06,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-20 15:41:06,776 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 1359 flow. Second operand 10 states and 108 transitions. [2024-06-20 15:41:06,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 145 transitions, 1708 flow [2024-06-20 15:41:06,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 145 transitions, 1665 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:06,819 INFO L231 Difference]: Finished difference. Result has 144 places, 133 transitions, 1399 flow [2024-06-20 15:41:06,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1399, PETRI_PLACES=144, PETRI_TRANSITIONS=133} [2024-06-20 15:41:06,821 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-20 15:41:06,821 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 133 transitions, 1399 flow [2024-06-20 15:41:06,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:06,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:06,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:06,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-20 15:41:06,821 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)] === [2024-06-20 15:41:06,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:06,822 INFO L85 PathProgramCache]: Analyzing trace with hash -988895652, now seen corresponding path program 6 times [2024-06-20 15:41:06,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:06,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752936636] [2024-06-20 15:41:06,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:06,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:07,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:07,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752936636] [2024-06-20 15:41:07,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752936636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:07,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:07,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:07,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292114042] [2024-06-20 15:41:07,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:07,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:07,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:07,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:07,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:07,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:07,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 1399 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:07,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:07,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:07,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:08,183 INFO L124 PetriNetUnfolderBase]: 385/669 cut-off events. [2024-06-20 15:41:08,183 INFO L125 PetriNetUnfolderBase]: For 28108/28108 co-relation queries the response was YES. [2024-06-20 15:41:08,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4789 conditions, 669 events. 385/669 cut-off events. For 28108/28108 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2798 event pairs, 56 based on Foata normal form. 2/669 useless extension candidates. Maximal degree in co-relation 4717. Up to 617 conditions per place. [2024-06-20 15:41:08,187 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 128 selfloop transitions, 19 changer transitions 0/149 dead transitions. [2024-06-20 15:41:08,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 149 transitions, 1755 flow [2024-06-20 15:41:08,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:08,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:08,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-20 15:41:08,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-20 15:41:08,188 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 1399 flow. Second operand 9 states and 105 transitions. [2024-06-20 15:41:08,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 149 transitions, 1755 flow [2024-06-20 15:41:08,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 149 transitions, 1710 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:08,228 INFO L231 Difference]: Finished difference. Result has 146 places, 135 transitions, 1429 flow [2024-06-20 15:41:08,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1429, PETRI_PLACES=146, PETRI_TRANSITIONS=135} [2024-06-20 15:41:08,229 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-20 15:41:08,229 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 135 transitions, 1429 flow [2024-06-20 15:41:08,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:08,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:08,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:08,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-20 15:41:08,229 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)] === [2024-06-20 15:41:08,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:08,230 INFO L85 PathProgramCache]: Analyzing trace with hash -988895869, now seen corresponding path program 8 times [2024-06-20 15:41:08,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:08,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600321166] [2024-06-20 15:41:08,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:08,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:08,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:08,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:08,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600321166] [2024-06-20 15:41:08,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600321166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:08,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:08,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:08,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802096507] [2024-06-20 15:41:08,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:08,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:08,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:08,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:08,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:09,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:09,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 135 transitions, 1429 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:09,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:09,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:09,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:09,275 INFO L124 PetriNetUnfolderBase]: 393/683 cut-off events. [2024-06-20 15:41:09,275 INFO L125 PetriNetUnfolderBase]: For 31104/31104 co-relation queries the response was YES. [2024-06-20 15:41:09,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4859 conditions, 683 events. 393/683 cut-off events. For 31104/31104 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2873 event pairs, 52 based on Foata normal form. 6/687 useless extension candidates. Maximal degree in co-relation 4786. Up to 615 conditions per place. [2024-06-20 15:41:09,279 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 130 selfloop transitions, 22 changer transitions 0/154 dead transitions. [2024-06-20 15:41:09,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 154 transitions, 1843 flow [2024-06-20 15:41:09,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:09,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:09,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-20 15:41:09,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-20 15:41:09,280 INFO L175 Difference]: Start difference. First operand has 146 places, 135 transitions, 1429 flow. Second operand 9 states and 107 transitions. [2024-06-20 15:41:09,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 154 transitions, 1843 flow [2024-06-20 15:41:09,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 154 transitions, 1788 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:09,328 INFO L231 Difference]: Finished difference. Result has 148 places, 139 transitions, 1497 flow [2024-06-20 15:41:09,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1497, PETRI_PLACES=148, PETRI_TRANSITIONS=139} [2024-06-20 15:41:09,329 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-20 15:41:09,329 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 139 transitions, 1497 flow [2024-06-20 15:41:09,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:09,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:09,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:09,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-20 15:41:09,330 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)] === [2024-06-20 15:41:09,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:09,330 INFO L85 PathProgramCache]: Analyzing trace with hash -989097679, now seen corresponding path program 9 times [2024-06-20 15:41:09,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:09,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068890269] [2024-06-20 15:41:09,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:09,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:10,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:10,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068890269] [2024-06-20 15:41:10,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068890269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:10,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:10,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:10,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650100273] [2024-06-20 15:41:10,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:10,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:10,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:10,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:10,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:10,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:10,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 139 transitions, 1497 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:10,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:10,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:10,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:10,390 INFO L124 PetriNetUnfolderBase]: 404/701 cut-off events. [2024-06-20 15:41:10,390 INFO L125 PetriNetUnfolderBase]: For 30515/30515 co-relation queries the response was YES. [2024-06-20 15:41:10,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5095 conditions, 701 events. 404/701 cut-off events. For 30515/30515 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2971 event pairs, 47 based on Foata normal form. 2/701 useless extension candidates. Maximal degree in co-relation 5021. Up to 565 conditions per place. [2024-06-20 15:41:10,395 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 118 selfloop transitions, 39 changer transitions 0/159 dead transitions. [2024-06-20 15:41:10,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 159 transitions, 2115 flow [2024-06-20 15:41:10,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:10,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:10,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-20 15:41:10,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-20 15:41:10,396 INFO L175 Difference]: Start difference. First operand has 148 places, 139 transitions, 1497 flow. Second operand 9 states and 110 transitions. [2024-06-20 15:41:10,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 159 transitions, 2115 flow [2024-06-20 15:41:10,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 159 transitions, 2035 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:10,443 INFO L231 Difference]: Finished difference. Result has 150 places, 144 transitions, 1589 flow [2024-06-20 15:41:10,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1589, PETRI_PLACES=150, PETRI_TRANSITIONS=144} [2024-06-20 15:41:10,444 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-20 15:41:10,444 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 144 transitions, 1589 flow [2024-06-20 15:41:10,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:10,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:10,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:10,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-20 15:41:10,444 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:10,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:10,445 INFO L85 PathProgramCache]: Analyzing trace with hash -989097462, now seen corresponding path program 7 times [2024-06-20 15:41:10,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:10,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353840824] [2024-06-20 15:41:10,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:10,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:11,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:11,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353840824] [2024-06-20 15:41:11,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353840824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:11,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:11,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:11,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917879645] [2024-06-20 15:41:11,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:11,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:11,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:11,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:11,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:11,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:11,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 144 transitions, 1589 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:11,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:11,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:11,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:11,719 INFO L124 PetriNetUnfolderBase]: 400/695 cut-off events. [2024-06-20 15:41:11,719 INFO L125 PetriNetUnfolderBase]: For 30298/30298 co-relation queries the response was YES. [2024-06-20 15:41:11,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5010 conditions, 695 events. 400/695 cut-off events. For 30298/30298 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2960 event pairs, 52 based on Foata normal form. 2/695 useless extension candidates. Maximal degree in co-relation 4935. Up to 614 conditions per place. [2024-06-20 15:41:11,723 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 127 selfloop transitions, 27 changer transitions 0/156 dead transitions. [2024-06-20 15:41:11,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 156 transitions, 1925 flow [2024-06-20 15:41:11,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:11,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:11,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-20 15:41:11,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-20 15:41:11,725 INFO L175 Difference]: Start difference. First operand has 150 places, 144 transitions, 1589 flow. Second operand 9 states and 104 transitions. [2024-06-20 15:41:11,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 156 transitions, 1925 flow [2024-06-20 15:41:11,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 156 transitions, 1746 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-20 15:41:11,776 INFO L231 Difference]: Finished difference. Result has 151 places, 144 transitions, 1469 flow [2024-06-20 15:41:11,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1469, PETRI_PLACES=151, PETRI_TRANSITIONS=144} [2024-06-20 15:41:11,777 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-20 15:41:11,777 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 144 transitions, 1469 flow [2024-06-20 15:41:11,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:11,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:11,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:11,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-20 15:41:11,777 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:11,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:11,778 INFO L85 PathProgramCache]: Analyzing trace with hash 621837544, now seen corresponding path program 1 times [2024-06-20 15:41:11,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:11,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679676024] [2024-06-20 15:41:11,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:11,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:12,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:12,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:12,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679676024] [2024-06-20 15:41:12,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679676024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:12,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:12,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:12,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325393943] [2024-06-20 15:41:12,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:12,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:12,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:12,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:12,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:12,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:12,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 144 transitions, 1469 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:12,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:12,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:12,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:13,151 INFO L124 PetriNetUnfolderBase]: 398/692 cut-off events. [2024-06-20 15:41:13,151 INFO L125 PetriNetUnfolderBase]: For 29300/29300 co-relation queries the response was YES. [2024-06-20 15:41:13,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4802 conditions, 692 events. 398/692 cut-off events. For 29300/29300 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2943 event pairs, 59 based on Foata normal form. 1/691 useless extension candidates. Maximal degree in co-relation 4728. Up to 669 conditions per place. [2024-06-20 15:41:13,155 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 135 selfloop transitions, 15 changer transitions 0/152 dead transitions. [2024-06-20 15:41:13,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 152 transitions, 1787 flow [2024-06-20 15:41:13,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:13,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-20 15:41:13,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-20 15:41:13,156 INFO L175 Difference]: Start difference. First operand has 151 places, 144 transitions, 1469 flow. Second operand 9 states and 96 transitions. [2024-06-20 15:41:13,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 152 transitions, 1787 flow [2024-06-20 15:41:13,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 152 transitions, 1641 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-20 15:41:13,207 INFO L231 Difference]: Finished difference. Result has 150 places, 144 transitions, 1358 flow [2024-06-20 15:41:13,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1358, PETRI_PLACES=150, PETRI_TRANSITIONS=144} [2024-06-20 15:41:13,207 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-20 15:41:13,207 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 144 transitions, 1358 flow [2024-06-20 15:41:13,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:13,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:13,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:13,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-20 15:41:13,208 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:13,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:13,208 INFO L85 PathProgramCache]: Analyzing trace with hash -989103259, now seen corresponding path program 10 times [2024-06-20 15:41:13,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:13,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544660228] [2024-06-20 15:41:13,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:13,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:13,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:13,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:13,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544660228] [2024-06-20 15:41:13,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544660228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:13,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:13,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:13,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599805166] [2024-06-20 15:41:13,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:13,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:13,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:13,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:13,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:14,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:14,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 144 transitions, 1358 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:14,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:14,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:14,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:14,264 INFO L124 PetriNetUnfolderBase]: 394/686 cut-off events. [2024-06-20 15:41:14,264 INFO L125 PetriNetUnfolderBase]: For 29516/29516 co-relation queries the response was YES. [2024-06-20 15:41:14,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4491 conditions, 686 events. 394/686 cut-off events. For 29516/29516 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2907 event pairs, 46 based on Foata normal form. 2/686 useless extension candidates. Maximal degree in co-relation 4418. Up to 555 conditions per place. [2024-06-20 15:41:14,268 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 115 selfloop transitions, 41 changer transitions 0/158 dead transitions. [2024-06-20 15:41:14,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 158 transitions, 1799 flow [2024-06-20 15:41:14,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:14,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:14,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-20 15:41:14,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-20 15:41:14,269 INFO L175 Difference]: Start difference. First operand has 150 places, 144 transitions, 1358 flow. Second operand 9 states and 109 transitions. [2024-06-20 15:41:14,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 158 transitions, 1799 flow [2024-06-20 15:41:14,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 158 transitions, 1727 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-20 15:41:14,319 INFO L231 Difference]: Finished difference. Result has 151 places, 144 transitions, 1375 flow [2024-06-20 15:41:14,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1375, PETRI_PLACES=151, PETRI_TRANSITIONS=144} [2024-06-20 15:41:14,320 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-20 15:41:14,320 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 144 transitions, 1375 flow [2024-06-20 15:41:14,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:14,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:14,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:14,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-20 15:41:14,321 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:14,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:14,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1956601901, now seen corresponding path program 1 times [2024-06-20 15:41:14,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:14,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380027508] [2024-06-20 15:41:14,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:14,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:15,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:15,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380027508] [2024-06-20 15:41:15,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380027508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:15,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:15,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:15,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649716953] [2024-06-20 15:41:15,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:15,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:15,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:15,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:15,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:15,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:15,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 144 transitions, 1375 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:15,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:15,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:15,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:15,675 INFO L124 PetriNetUnfolderBase]: 405/707 cut-off events. [2024-06-20 15:41:15,675 INFO L125 PetriNetUnfolderBase]: For 33049/33049 co-relation queries the response was YES. [2024-06-20 15:41:15,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4751 conditions, 707 events. 405/707 cut-off events. For 33049/33049 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3038 event pairs, 41 based on Foata normal form. 2/707 useless extension candidates. Maximal degree in co-relation 4677. Up to 620 conditions per place. [2024-06-20 15:41:15,679 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 148 selfloop transitions, 18 changer transitions 0/168 dead transitions. [2024-06-20 15:41:15,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 168 transitions, 1880 flow [2024-06-20 15:41:15,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:15,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:15,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-20 15:41:15,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-20 15:41:15,680 INFO L175 Difference]: Start difference. First operand has 151 places, 144 transitions, 1375 flow. Second operand 10 states and 117 transitions. [2024-06-20 15:41:15,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 168 transitions, 1880 flow [2024-06-20 15:41:15,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 168 transitions, 1807 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:15,734 INFO L231 Difference]: Finished difference. Result has 154 places, 146 transitions, 1368 flow [2024-06-20 15:41:15,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1368, PETRI_PLACES=154, PETRI_TRANSITIONS=146} [2024-06-20 15:41:15,735 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-06-20 15:41:15,735 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 146 transitions, 1368 flow [2024-06-20 15:41:15,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:15,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:15,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:15,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-20 15:41:15,735 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:15,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:15,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1139833129, now seen corresponding path program 2 times [2024-06-20 15:41:15,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:15,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356971208] [2024-06-20 15:41:15,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:15,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:16,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:16,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:16,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356971208] [2024-06-20 15:41:16,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356971208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:16,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:16,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:16,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976426306] [2024-06-20 15:41:16,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:16,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:16,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:16,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:16,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:16,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:16,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 146 transitions, 1368 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:16,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:16,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:16,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:17,342 INFO L124 PetriNetUnfolderBase]: 412/720 cut-off events. [2024-06-20 15:41:17,342 INFO L125 PetriNetUnfolderBase]: For 34477/34477 co-relation queries the response was YES. [2024-06-20 15:41:17,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4807 conditions, 720 events. 412/720 cut-off events. For 34477/34477 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3114 event pairs, 58 based on Foata normal form. 2/720 useless extension candidates. Maximal degree in co-relation 4732. Up to 661 conditions per place. [2024-06-20 15:41:17,346 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 151 selfloop transitions, 20 changer transitions 0/173 dead transitions. [2024-06-20 15:41:17,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 173 transitions, 1812 flow [2024-06-20 15:41:17,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:41:17,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:41:17,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-20 15:41:17,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-20 15:41:17,347 INFO L175 Difference]: Start difference. First operand has 154 places, 146 transitions, 1368 flow. Second operand 11 states and 127 transitions. [2024-06-20 15:41:17,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 173 transitions, 1812 flow [2024-06-20 15:41:17,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 173 transitions, 1766 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-20 15:41:17,407 INFO L231 Difference]: Finished difference. Result has 160 places, 150 transitions, 1411 flow [2024-06-20 15:41:17,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1411, PETRI_PLACES=160, PETRI_TRANSITIONS=150} [2024-06-20 15:41:17,408 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-20 15:41:17,408 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 150 transitions, 1411 flow [2024-06-20 15:41:17,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:17,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:17,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:17,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-20 15:41:17,408 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:17,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:17,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1692112133, now seen corresponding path program 1 times [2024-06-20 15:41:17,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:17,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595738720] [2024-06-20 15:41:17,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:17,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:18,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:18,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595738720] [2024-06-20 15:41:18,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595738720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:18,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:18,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:18,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520493796] [2024-06-20 15:41:18,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:18,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:18,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:18,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:18,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:18,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:18,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 150 transitions, 1411 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:18,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:18,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:18,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:18,940 INFO L124 PetriNetUnfolderBase]: 434/756 cut-off events. [2024-06-20 15:41:18,940 INFO L125 PetriNetUnfolderBase]: For 40336/40336 co-relation queries the response was YES. [2024-06-20 15:41:18,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5110 conditions, 756 events. 434/756 cut-off events. For 40336/40336 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3314 event pairs, 62 based on Foata normal form. 4/758 useless extension candidates. Maximal degree in co-relation 5032. Up to 670 conditions per place. [2024-06-20 15:41:18,945 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 150 selfloop transitions, 25 changer transitions 0/177 dead transitions. [2024-06-20 15:41:18,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 177 transitions, 1976 flow [2024-06-20 15:41:18,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:18,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:18,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 15:41:18,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-20 15:41:18,946 INFO L175 Difference]: Start difference. First operand has 160 places, 150 transitions, 1411 flow. Second operand 10 states and 122 transitions. [2024-06-20 15:41:18,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 177 transitions, 1976 flow [2024-06-20 15:41:19,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 177 transitions, 1942 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-20 15:41:19,012 INFO L231 Difference]: Finished difference. Result has 164 places, 155 transitions, 1502 flow [2024-06-20 15:41:19,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1502, PETRI_PLACES=164, PETRI_TRANSITIONS=155} [2024-06-20 15:41:19,013 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-20 15:41:19,013 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 155 transitions, 1502 flow [2024-06-20 15:41:19,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:19,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:19,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:19,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-20 15:41:19,014 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:19,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:19,014 INFO L85 PathProgramCache]: Analyzing trace with hash -737809431, now seen corresponding path program 3 times [2024-06-20 15:41:19,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:19,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935620874] [2024-06-20 15:41:19,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:19,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:19,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:19,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935620874] [2024-06-20 15:41:19,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935620874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:19,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:19,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:19,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051508191] [2024-06-20 15:41:19,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:19,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:19,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:19,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:19,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:20,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:20,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 155 transitions, 1502 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:20,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:20,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:20,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:20,386 INFO L124 PetriNetUnfolderBase]: 431/751 cut-off events. [2024-06-20 15:41:20,386 INFO L125 PetriNetUnfolderBase]: For 37546/37546 co-relation queries the response was YES. [2024-06-20 15:41:20,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5097 conditions, 751 events. 431/751 cut-off events. For 37546/37546 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3285 event pairs, 64 based on Foata normal form. 2/751 useless extension candidates. Maximal degree in co-relation 5018. Up to 686 conditions per place. [2024-06-20 15:41:20,390 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 152 selfloop transitions, 19 changer transitions 0/173 dead transitions. [2024-06-20 15:41:20,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 173 transitions, 1894 flow [2024-06-20 15:41:20,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:20,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-20 15:41:20,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-20 15:41:20,392 INFO L175 Difference]: Start difference. First operand has 164 places, 155 transitions, 1502 flow. Second operand 9 states and 107 transitions. [2024-06-20 15:41:20,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 173 transitions, 1894 flow [2024-06-20 15:41:20,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 173 transitions, 1828 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-20 15:41:20,476 INFO L231 Difference]: Finished difference. Result has 167 places, 155 transitions, 1480 flow [2024-06-20 15:41:20,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1480, PETRI_PLACES=167, PETRI_TRANSITIONS=155} [2024-06-20 15:41:20,476 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-20 15:41:20,476 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 155 transitions, 1480 flow [2024-06-20 15:41:20,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:20,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:20,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:20,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-20 15:41:20,476 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:20,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:20,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1135064709, now seen corresponding path program 2 times [2024-06-20 15:41:20,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:20,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706380879] [2024-06-20 15:41:20,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:20,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:21,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:21,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:21,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706380879] [2024-06-20 15:41:21,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706380879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:21,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:21,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:21,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845590151] [2024-06-20 15:41:21,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:21,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:21,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:21,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:21,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:21,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:21,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 155 transitions, 1480 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:21,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:21,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:21,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:21,930 INFO L124 PetriNetUnfolderBase]: 487/841 cut-off events. [2024-06-20 15:41:21,930 INFO L125 PetriNetUnfolderBase]: For 51133/51133 co-relation queries the response was YES. [2024-06-20 15:41:21,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6037 conditions, 841 events. 487/841 cut-off events. For 51133/51133 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3773 event pairs, 48 based on Foata normal form. 2/841 useless extension candidates. Maximal degree in co-relation 5956. Up to 379 conditions per place. [2024-06-20 15:41:21,935 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 108 selfloop transitions, 78 changer transitions 0/188 dead transitions. [2024-06-20 15:41:21,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 188 transitions, 2334 flow [2024-06-20 15:41:21,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:21,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-20 15:41:21,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43870967741935485 [2024-06-20 15:41:21,936 INFO L175 Difference]: Start difference. First operand has 167 places, 155 transitions, 1480 flow. Second operand 10 states and 136 transitions. [2024-06-20 15:41:21,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 188 transitions, 2334 flow [2024-06-20 15:41:22,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 188 transitions, 2286 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-20 15:41:22,017 INFO L231 Difference]: Finished difference. Result has 170 places, 164 transitions, 1752 flow [2024-06-20 15:41:22,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1438, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1752, PETRI_PLACES=170, PETRI_TRANSITIONS=164} [2024-06-20 15:41:22,018 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-20 15:41:22,018 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 164 transitions, 1752 flow [2024-06-20 15:41:22,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:22,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:22,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:22,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-20 15:41:22,018 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:22,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:22,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1807576097, now seen corresponding path program 1 times [2024-06-20 15:41:22,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:22,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259580732] [2024-06-20 15:41:22,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:22,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:23,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:23,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259580732] [2024-06-20 15:41:23,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259580732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:23,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:23,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:23,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035707025] [2024-06-20 15:41:23,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:23,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:23,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:23,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:23,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:23,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:23,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 164 transitions, 1752 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:23,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:23,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:23,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:23,647 INFO L124 PetriNetUnfolderBase]: 485/838 cut-off events. [2024-06-20 15:41:23,647 INFO L125 PetriNetUnfolderBase]: For 49591/49591 co-relation queries the response was YES. [2024-06-20 15:41:23,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6253 conditions, 838 events. 485/838 cut-off events. For 49591/49591 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3780 event pairs, 57 based on Foata normal form. 1/837 useless extension candidates. Maximal degree in co-relation 6170. Up to 644 conditions per place. [2024-06-20 15:41:23,652 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 123 selfloop transitions, 56 changer transitions 0/181 dead transitions. [2024-06-20 15:41:23,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 181 transitions, 2154 flow [2024-06-20 15:41:23,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:23,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 15:41:23,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 15:41:23,653 INFO L175 Difference]: Start difference. First operand has 170 places, 164 transitions, 1752 flow. Second operand 10 states and 124 transitions. [2024-06-20 15:41:23,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 181 transitions, 2154 flow [2024-06-20 15:41:23,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 181 transitions, 2059 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-20 15:41:23,735 INFO L231 Difference]: Finished difference. Result has 176 places, 164 transitions, 1774 flow [2024-06-20 15:41:23,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1774, PETRI_PLACES=176, PETRI_TRANSITIONS=164} [2024-06-20 15:41:23,736 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-20 15:41:23,736 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 164 transitions, 1774 flow [2024-06-20 15:41:23,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:23,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:23,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:23,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-20 15:41:23,736 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:23,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:23,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1807576283, now seen corresponding path program 3 times [2024-06-20 15:41:23,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:23,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270172326] [2024-06-20 15:41:23,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:23,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:25,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:25,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270172326] [2024-06-20 15:41:25,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270172326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:25,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:25,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:25,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007234185] [2024-06-20 15:41:25,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:25,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:25,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:25,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:25,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:25,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:25,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 164 transitions, 1774 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:25,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:25,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:25,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:25,822 INFO L124 PetriNetUnfolderBase]: 491/848 cut-off events. [2024-06-20 15:41:25,822 INFO L125 PetriNetUnfolderBase]: For 52617/52617 co-relation queries the response was YES. [2024-06-20 15:41:25,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6350 conditions, 848 events. 491/848 cut-off events. For 52617/52617 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3821 event pairs, 52 based on Foata normal form. 2/848 useless extension candidates. Maximal degree in co-relation 6265. Up to 551 conditions per place. [2024-06-20 15:41:25,828 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 56 changer transitions 0/192 dead transitions. [2024-06-20 15:41:25,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 192 transitions, 2481 flow [2024-06-20 15:41:25,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:25,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:25,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-20 15:41:25,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-20 15:41:25,829 INFO L175 Difference]: Start difference. First operand has 176 places, 164 transitions, 1774 flow. Second operand 10 states and 131 transitions. [2024-06-20 15:41:25,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 192 transitions, 2481 flow [2024-06-20 15:41:25,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 192 transitions, 2362 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-20 15:41:25,917 INFO L231 Difference]: Finished difference. Result has 179 places, 170 transitions, 1895 flow [2024-06-20 15:41:25,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1895, PETRI_PLACES=179, PETRI_TRANSITIONS=170} [2024-06-20 15:41:25,918 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-20 15:41:25,918 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 170 transitions, 1895 flow [2024-06-20 15:41:25,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:25,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:25,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:25,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-20 15:41:25,918 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:25,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:25,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1807403303, now seen corresponding path program 4 times [2024-06-20 15:41:25,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:25,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64759879] [2024-06-20 15:41:25,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:25,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:27,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:27,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64759879] [2024-06-20 15:41:27,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64759879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:27,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:27,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:27,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893392472] [2024-06-20 15:41:27,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:27,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:27,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:27,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:27,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:27,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:27,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 170 transitions, 1895 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:27,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:27,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:27,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:28,067 INFO L124 PetriNetUnfolderBase]: 487/842 cut-off events. [2024-06-20 15:41:28,067 INFO L125 PetriNetUnfolderBase]: For 52615/52615 co-relation queries the response was YES. [2024-06-20 15:41:28,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6397 conditions, 842 events. 487/842 cut-off events. For 52615/52615 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3808 event pairs, 50 based on Foata normal form. 2/842 useless extension candidates. Maximal degree in co-relation 6309. Up to 548 conditions per place. [2024-06-20 15:41:28,073 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 56 changer transitions 0/192 dead transitions. [2024-06-20 15:41:28,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 192 transitions, 2435 flow [2024-06-20 15:41:28,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:28,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:28,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-20 15:41:28,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-20 15:41:28,074 INFO L175 Difference]: Start difference. First operand has 179 places, 170 transitions, 1895 flow. Second operand 10 states and 131 transitions. [2024-06-20 15:41:28,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 192 transitions, 2435 flow [2024-06-20 15:41:28,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 192 transitions, 2377 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-20 15:41:28,169 INFO L231 Difference]: Finished difference. Result has 184 places, 171 transitions, 1962 flow [2024-06-20 15:41:28,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1962, PETRI_PLACES=184, PETRI_TRANSITIONS=171} [2024-06-20 15:41:28,170 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-20 15:41:28,170 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 171 transitions, 1962 flow [2024-06-20 15:41:28,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:28,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:28,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:28,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-20 15:41:28,171 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:28,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:28,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1807398343, now seen corresponding path program 4 times [2024-06-20 15:41:28,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:28,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400677255] [2024-06-20 15:41:28,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:28,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:29,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:29,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400677255] [2024-06-20 15:41:29,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400677255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:29,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:29,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:29,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39130234] [2024-06-20 15:41:29,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:29,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:29,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:29,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:29,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:29,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:29,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 171 transitions, 1962 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:29,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:29,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:29,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:29,885 INFO L124 PetriNetUnfolderBase]: 491/850 cut-off events. [2024-06-20 15:41:29,885 INFO L125 PetriNetUnfolderBase]: For 54534/54534 co-relation queries the response was YES. [2024-06-20 15:41:29,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6592 conditions, 850 events. 491/850 cut-off events. For 54534/54534 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3827 event pairs, 74 based on Foata normal form. 2/850 useless extension candidates. Maximal degree in co-relation 6502. Up to 776 conditions per place. [2024-06-20 15:41:29,890 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 158 selfloop transitions, 29 changer transitions 0/189 dead transitions. [2024-06-20 15:41:29,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 189 transitions, 2405 flow [2024-06-20 15:41:29,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:29,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:29,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-20 15:41:29,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-20 15:41:29,895 INFO L175 Difference]: Start difference. First operand has 184 places, 171 transitions, 1962 flow. Second operand 10 states and 116 transitions. [2024-06-20 15:41:29,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 189 transitions, 2405 flow [2024-06-20 15:41:29,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 189 transitions, 2306 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-20 15:41:29,997 INFO L231 Difference]: Finished difference. Result has 189 places, 173 transitions, 1968 flow [2024-06-20 15:41:29,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1968, PETRI_PLACES=189, PETRI_TRANSITIONS=173} [2024-06-20 15:41:29,997 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-06-20 15:41:29,997 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 173 transitions, 1968 flow [2024-06-20 15:41:29,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:29,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:29,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:29,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-20 15:41:29,998 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:29,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:29,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1973042251, now seen corresponding path program 2 times [2024-06-20 15:41:29,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:29,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136440057] [2024-06-20 15:41:29,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:29,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:30,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:30,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136440057] [2024-06-20 15:41:30,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136440057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:30,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:30,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:30,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205730333] [2024-06-20 15:41:30,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:30,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:30,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:30,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:30,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:30,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:30,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 173 transitions, 1968 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:30,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:30,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:30,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:31,242 INFO L124 PetriNetUnfolderBase]: 489/847 cut-off events. [2024-06-20 15:41:31,242 INFO L125 PetriNetUnfolderBase]: For 53552/53552 co-relation queries the response was YES. [2024-06-20 15:41:31,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6503 conditions, 847 events. 489/847 cut-off events. For 53552/53552 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3830 event pairs, 68 based on Foata normal form. 1/846 useless extension candidates. Maximal degree in co-relation 6412. Up to 732 conditions per place. [2024-06-20 15:41:31,248 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 150 selfloop transitions, 37 changer transitions 0/189 dead transitions. [2024-06-20 15:41:31,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 189 transitions, 2382 flow [2024-06-20 15:41:31,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:31,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:31,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-20 15:41:31,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-20 15:41:31,249 INFO L175 Difference]: Start difference. First operand has 189 places, 173 transitions, 1968 flow. Second operand 9 states and 116 transitions. [2024-06-20 15:41:31,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 189 transitions, 2382 flow [2024-06-20 15:41:31,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 189 transitions, 2292 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-20 15:41:31,350 INFO L231 Difference]: Finished difference. Result has 189 places, 173 transitions, 1959 flow [2024-06-20 15:41:31,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1959, PETRI_PLACES=189, PETRI_TRANSITIONS=173} [2024-06-20 15:41:31,351 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-06-20 15:41:31,351 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 173 transitions, 1959 flow [2024-06-20 15:41:31,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:31,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:31,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:31,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-20 15:41:31,352 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:31,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:31,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1973042437, now seen corresponding path program 5 times [2024-06-20 15:41:31,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:31,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550860767] [2024-06-20 15:41:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:31,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:32,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:32,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550860767] [2024-06-20 15:41:32,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550860767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:32,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:32,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:32,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312549800] [2024-06-20 15:41:32,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:32,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:32,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:32,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:32,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:32,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:32,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 173 transitions, 1959 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:32,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:32,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:32,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:32,933 INFO L124 PetriNetUnfolderBase]: 505/873 cut-off events. [2024-06-20 15:41:32,933 INFO L125 PetriNetUnfolderBase]: For 60058/60058 co-relation queries the response was YES. [2024-06-20 15:41:32,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6800 conditions, 873 events. 505/873 cut-off events. For 60058/60058 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3972 event pairs, 66 based on Foata normal form. 2/873 useless extension candidates. Maximal degree in co-relation 6709. Up to 743 conditions per place. [2024-06-20 15:41:32,939 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 159 selfloop transitions, 35 changer transitions 0/196 dead transitions. [2024-06-20 15:41:32,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 196 transitions, 2567 flow [2024-06-20 15:41:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:32,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:32,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 15:41:32,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 15:41:32,940 INFO L175 Difference]: Start difference. First operand has 189 places, 173 transitions, 1959 flow. Second operand 10 states and 125 transitions. [2024-06-20 15:41:32,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 196 transitions, 2567 flow [2024-06-20 15:41:33,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 196 transitions, 2481 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-20 15:41:33,050 INFO L231 Difference]: Finished difference. Result has 190 places, 177 transitions, 2022 flow [2024-06-20 15:41:33,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2022, PETRI_PLACES=190, PETRI_TRANSITIONS=177} [2024-06-20 15:41:33,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-20 15:41:33,050 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 177 transitions, 2022 flow [2024-06-20 15:41:33,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:33,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:33,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:33,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-20 15:41:33,051 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:33,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1979717605, now seen corresponding path program 1 times [2024-06-20 15:41:33,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:33,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087112213] [2024-06-20 15:41:33,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:33,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:34,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:34,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087112213] [2024-06-20 15:41:34,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087112213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:34,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:34,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:34,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462970121] [2024-06-20 15:41:34,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:34,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:34,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:34,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:34,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:34,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:34,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 177 transitions, 2022 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:34,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:34,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:34,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:34,578 INFO L124 PetriNetUnfolderBase]: 512/886 cut-off events. [2024-06-20 15:41:34,578 INFO L125 PetriNetUnfolderBase]: For 59989/59989 co-relation queries the response was YES. [2024-06-20 15:41:34,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6864 conditions, 886 events. 512/886 cut-off events. For 59989/59989 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4061 event pairs, 53 based on Foata normal form. 2/886 useless extension candidates. Maximal degree in co-relation 6773. Up to 815 conditions per place. [2024-06-20 15:41:34,585 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 172 selfloop transitions, 24 changer transitions 0/198 dead transitions. [2024-06-20 15:41:34,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 198 transitions, 2497 flow [2024-06-20 15:41:34,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:34,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:34,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-20 15:41:34,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-20 15:41:34,586 INFO L175 Difference]: Start difference. First operand has 190 places, 177 transitions, 2022 flow. Second operand 9 states and 107 transitions. [2024-06-20 15:41:34,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 198 transitions, 2497 flow [2024-06-20 15:41:34,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 198 transitions, 2431 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-20 15:41:34,699 INFO L231 Difference]: Finished difference. Result has 196 places, 184 transitions, 2093 flow [2024-06-20 15:41:34,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2093, PETRI_PLACES=196, PETRI_TRANSITIONS=184} [2024-06-20 15:41:34,700 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-06-20 15:41:34,700 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 184 transitions, 2093 flow [2024-06-20 15:41:34,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:34,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:34,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:34,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-20 15:41:34,700 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:34,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:34,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1973221927, now seen corresponding path program 6 times [2024-06-20 15:41:34,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:34,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325014390] [2024-06-20 15:41:34,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:34,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:36,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:36,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325014390] [2024-06-20 15:41:36,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325014390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:36,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:36,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:36,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734199375] [2024-06-20 15:41:36,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:36,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:36,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:36,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:36,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:36,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:36,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 184 transitions, 2093 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:36,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:36,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:36,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:36,651 INFO L124 PetriNetUnfolderBase]: 528/912 cut-off events. [2024-06-20 15:41:36,652 INFO L125 PetriNetUnfolderBase]: For 65439/65439 co-relation queries the response was YES. [2024-06-20 15:41:36,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7336 conditions, 912 events. 528/912 cut-off events. For 65439/65439 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4217 event pairs, 54 based on Foata normal form. 2/912 useless extension candidates. Maximal degree in co-relation 7240. Up to 771 conditions per place. [2024-06-20 15:41:36,658 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 166 selfloop transitions, 40 changer transitions 0/208 dead transitions. [2024-06-20 15:41:36,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 208 transitions, 2854 flow [2024-06-20 15:41:36,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:36,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:36,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-20 15:41:36,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-20 15:41:36,659 INFO L175 Difference]: Start difference. First operand has 196 places, 184 transitions, 2093 flow. Second operand 10 states and 127 transitions. [2024-06-20 15:41:36,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 208 transitions, 2854 flow [2024-06-20 15:41:36,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 208 transitions, 2821 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-20 15:41:36,774 INFO L231 Difference]: Finished difference. Result has 202 places, 189 transitions, 2224 flow [2024-06-20 15:41:36,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2224, PETRI_PLACES=202, PETRI_TRANSITIONS=189} [2024-06-20 15:41:36,775 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-20 15:41:36,775 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 189 transitions, 2224 flow [2024-06-20 15:41:36,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:36,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:36,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:36,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-20 15:41:36,775 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:36,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:36,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1979471527, now seen corresponding path program 7 times [2024-06-20 15:41:36,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:36,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780292232] [2024-06-20 15:41:36,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:36,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:37,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:37,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:37,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780292232] [2024-06-20 15:41:37,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780292232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:37,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:37,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:37,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605034306] [2024-06-20 15:41:37,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:37,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:37,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:37,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:37,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:37,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:37,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 189 transitions, 2224 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:37,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:37,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:37,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:38,170 INFO L124 PetriNetUnfolderBase]: 550/948 cut-off events. [2024-06-20 15:41:38,170 INFO L125 PetriNetUnfolderBase]: For 74560/74560 co-relation queries the response was YES. [2024-06-20 15:41:38,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7784 conditions, 948 events. 550/948 cut-off events. For 74560/74560 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4427 event pairs, 59 based on Foata normal form. 4/950 useless extension candidates. Maximal degree in co-relation 7686. Up to 813 conditions per place. [2024-06-20 15:41:38,177 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 176 selfloop transitions, 35 changer transitions 0/213 dead transitions. [2024-06-20 15:41:38,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 213 transitions, 2916 flow [2024-06-20 15:41:38,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:38,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 15:41:38,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 15:41:38,178 INFO L175 Difference]: Start difference. First operand has 202 places, 189 transitions, 2224 flow. Second operand 10 states and 124 transitions. [2024-06-20 15:41:38,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 213 transitions, 2916 flow [2024-06-20 15:41:38,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 213 transitions, 2843 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-20 15:41:38,304 INFO L231 Difference]: Finished difference. Result has 207 places, 195 transitions, 2343 flow [2024-06-20 15:41:38,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2153, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2343, PETRI_PLACES=207, PETRI_TRANSITIONS=195} [2024-06-20 15:41:38,304 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-20 15:41:38,304 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 195 transitions, 2343 flow [2024-06-20 15:41:38,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:38,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:38,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:38,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-20 15:41:38,305 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:38,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:38,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1973037477, now seen corresponding path program 5 times [2024-06-20 15:41:38,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:38,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43627071] [2024-06-20 15:41:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:38,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:39,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:39,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43627071] [2024-06-20 15:41:39,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43627071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:39,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:39,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:39,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934500729] [2024-06-20 15:41:39,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:39,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:39,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:39,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:39,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:39,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:39,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 195 transitions, 2343 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:39,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:39,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:39,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:39,739 INFO L124 PetriNetUnfolderBase]: 554/956 cut-off events. [2024-06-20 15:41:39,739 INFO L125 PetriNetUnfolderBase]: For 73951/73951 co-relation queries the response was YES. [2024-06-20 15:41:39,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7870 conditions, 956 events. 554/956 cut-off events. For 73951/73951 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4479 event pairs, 84 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 7771. Up to 915 conditions per place. [2024-06-20 15:41:39,746 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 188 selfloop transitions, 18 changer transitions 0/208 dead transitions. [2024-06-20 15:41:39,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 208 transitions, 2801 flow [2024-06-20 15:41:39,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:39,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:39,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-20 15:41:39,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-20 15:41:39,747 INFO L175 Difference]: Start difference. First operand has 207 places, 195 transitions, 2343 flow. Second operand 9 states and 102 transitions. [2024-06-20 15:41:39,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 208 transitions, 2801 flow [2024-06-20 15:41:39,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 208 transitions, 2717 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-20 15:41:39,884 INFO L231 Difference]: Finished difference. Result has 210 places, 196 transitions, 2317 flow [2024-06-20 15:41:39,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2259, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2317, PETRI_PLACES=210, PETRI_TRANSITIONS=196} [2024-06-20 15:41:39,885 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-20 15:41:39,885 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 196 transitions, 2317 flow [2024-06-20 15:41:39,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:39,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:39,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:39,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-20 15:41:39,886 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:39,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:39,886 INFO L85 PathProgramCache]: Analyzing trace with hash -969432085, now seen corresponding path program 8 times [2024-06-20 15:41:39,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:39,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176062153] [2024-06-20 15:41:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:39,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:40,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:40,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:40,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176062153] [2024-06-20 15:41:40,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176062153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:40,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:40,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:40,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978140241] [2024-06-20 15:41:40,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:40,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:40,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:40,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:40,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:40,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:40,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 196 transitions, 2317 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:40,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:40,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:40,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:41,366 INFO L124 PetriNetUnfolderBase]: 576/992 cut-off events. [2024-06-20 15:41:41,366 INFO L125 PetriNetUnfolderBase]: For 83343/83343 co-relation queries the response was YES. [2024-06-20 15:41:41,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8243 conditions, 992 events. 576/992 cut-off events. For 83343/83343 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4668 event pairs, 62 based on Foata normal form. 4/994 useless extension candidates. Maximal degree in co-relation 8142. Up to 771 conditions per place. [2024-06-20 15:41:41,374 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 171 selfloop transitions, 50 changer transitions 0/223 dead transitions. [2024-06-20 15:41:41,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 223 transitions, 3281 flow [2024-06-20 15:41:41,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:41,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:41,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-20 15:41:41,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2024-06-20 15:41:41,375 INFO L175 Difference]: Start difference. First operand has 210 places, 196 transitions, 2317 flow. Second operand 10 states and 134 transitions. [2024-06-20 15:41:41,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 223 transitions, 3281 flow [2024-06-20 15:41:41,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 223 transitions, 3221 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:41,545 INFO L231 Difference]: Finished difference. Result has 213 places, 202 transitions, 2489 flow [2024-06-20 15:41:41,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2489, PETRI_PLACES=213, PETRI_TRANSITIONS=202} [2024-06-20 15:41:41,545 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-20 15:41:41,546 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 202 transitions, 2489 flow [2024-06-20 15:41:41,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:41,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:41,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:41,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-20 15:41:41,546 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:41,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:41,547 INFO L85 PathProgramCache]: Analyzing trace with hash -963169465, now seen corresponding path program 9 times [2024-06-20 15:41:41,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:41,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122118721] [2024-06-20 15:41:41,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:41,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:42,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:42,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122118721] [2024-06-20 15:41:42,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122118721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:42,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:42,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:42,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138374366] [2024-06-20 15:41:42,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:42,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:42,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:42,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:42,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:42,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:42,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 202 transitions, 2489 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:42,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:42,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:42,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:43,222 INFO L124 PetriNetUnfolderBase]: 572/986 cut-off events. [2024-06-20 15:41:43,222 INFO L125 PetriNetUnfolderBase]: For 79884/79884 co-relation queries the response was YES. [2024-06-20 15:41:43,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8211 conditions, 986 events. 572/986 cut-off events. For 79884/79884 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4668 event pairs, 62 based on Foata normal form. 2/986 useless extension candidates. Maximal degree in co-relation 8109. Up to 888 conditions per place. [2024-06-20 15:41:43,230 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 187 selfloop transitions, 30 changer transitions 0/219 dead transitions. [2024-06-20 15:41:43,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 219 transitions, 2973 flow [2024-06-20 15:41:43,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:43,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:43,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 15:41:43,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-20 15:41:43,233 INFO L175 Difference]: Start difference. First operand has 213 places, 202 transitions, 2489 flow. Second operand 10 states and 122 transitions. [2024-06-20 15:41:43,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 219 transitions, 2973 flow [2024-06-20 15:41:43,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 219 transitions, 2840 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-20 15:41:43,378 INFO L231 Difference]: Finished difference. Result has 217 places, 202 transitions, 2421 flow [2024-06-20 15:41:43,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2356, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2421, PETRI_PLACES=217, PETRI_TRANSITIONS=202} [2024-06-20 15:41:43,379 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-20 15:41:43,379 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 202 transitions, 2421 flow [2024-06-20 15:41:43,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:43,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:43,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:43,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-20 15:41:43,379 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:43,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:43,379 INFO L85 PathProgramCache]: Analyzing trace with hash 157771655, now seen corresponding path program 6 times [2024-06-20 15:41:43,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:43,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195132836] [2024-06-20 15:41:43,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:43,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:44,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:44,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:44,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195132836] [2024-06-20 15:41:44,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195132836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:44,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:44,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:44,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324158264] [2024-06-20 15:41:44,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:44,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:44,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:44,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:44,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:44,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:44,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 202 transitions, 2421 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:44,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:44,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:44,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:44,932 INFO L124 PetriNetUnfolderBase]: 569/981 cut-off events. [2024-06-20 15:41:44,932 INFO L125 PetriNetUnfolderBase]: For 77811/77811 co-relation queries the response was YES. [2024-06-20 15:41:44,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7991 conditions, 981 events. 569/981 cut-off events. For 77811/77811 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4611 event pairs, 88 based on Foata normal form. 2/981 useless extension candidates. Maximal degree in co-relation 7888. Up to 952 conditions per place. [2024-06-20 15:41:44,940 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 194 selfloop transitions, 16 changer transitions 0/212 dead transitions. [2024-06-20 15:41:44,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 212 transitions, 2863 flow [2024-06-20 15:41:44,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:44,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-20 15:41:44,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-20 15:41:44,941 INFO L175 Difference]: Start difference. First operand has 217 places, 202 transitions, 2421 flow. Second operand 10 states and 105 transitions. [2024-06-20 15:41:44,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 212 transitions, 2863 flow [2024-06-20 15:41:45,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 212 transitions, 2799 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:45,151 INFO L231 Difference]: Finished difference. Result has 220 places, 202 transitions, 2393 flow [2024-06-20 15:41:45,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2393, PETRI_PLACES=220, PETRI_TRANSITIONS=202} [2024-06-20 15:41:45,152 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-20 15:41:45,152 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 202 transitions, 2393 flow [2024-06-20 15:41:45,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:45,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:45,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:45,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-20 15:41:45,152 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:45,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:45,153 INFO L85 PathProgramCache]: Analyzing trace with hash -590753819, now seen corresponding path program 2 times [2024-06-20 15:41:45,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:45,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772535079] [2024-06-20 15:41:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:45,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:46,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:46,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772535079] [2024-06-20 15:41:46,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772535079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:46,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:46,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:46,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095173442] [2024-06-20 15:41:46,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:46,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:46,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:46,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:46,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:46,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:46,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 202 transitions, 2393 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:46,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:46,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:46,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:46,471 INFO L124 PetriNetUnfolderBase]: 573/989 cut-off events. [2024-06-20 15:41:46,472 INFO L125 PetriNetUnfolderBase]: For 80247/80247 co-relation queries the response was YES. [2024-06-20 15:41:46,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8000 conditions, 989 events. 573/989 cut-off events. For 80247/80247 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4686 event pairs, 82 based on Foata normal form. 2/989 useless extension candidates. Maximal degree in co-relation 7897. Up to 948 conditions per place. [2024-06-20 15:41:46,480 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 197 selfloop transitions, 17 changer transitions 0/216 dead transitions. [2024-06-20 15:41:46,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 216 transitions, 2888 flow [2024-06-20 15:41:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:46,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-20 15:41:46,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-20 15:41:46,481 INFO L175 Difference]: Start difference. First operand has 220 places, 202 transitions, 2393 flow. Second operand 9 states and 101 transitions. [2024-06-20 15:41:46,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 216 transitions, 2888 flow [2024-06-20 15:41:46,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 216 transitions, 2805 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-20 15:41:46,656 INFO L231 Difference]: Finished difference. Result has 220 places, 205 transitions, 2394 flow [2024-06-20 15:41:46,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2394, PETRI_PLACES=220, PETRI_TRANSITIONS=205} [2024-06-20 15:41:46,657 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-20 15:41:46,657 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 205 transitions, 2394 flow [2024-06-20 15:41:46,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:46,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:46,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:46,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-20 15:41:46,658 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:46,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:46,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1465356841, now seen corresponding path program 3 times [2024-06-20 15:41:46,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:46,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134273990] [2024-06-20 15:41:46,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:46,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:47,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:47,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134273990] [2024-06-20 15:41:47,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134273990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:47,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:47,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:47,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719863486] [2024-06-20 15:41:47,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:47,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:47,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:47,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:47,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:47,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:47,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 205 transitions, 2394 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:47,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:47,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:47,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:48,067 INFO L124 PetriNetUnfolderBase]: 577/997 cut-off events. [2024-06-20 15:41:48,067 INFO L125 PetriNetUnfolderBase]: For 82776/82776 co-relation queries the response was YES. [2024-06-20 15:41:48,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8038 conditions, 997 events. 577/997 cut-off events. For 82776/82776 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4743 event pairs, 84 based on Foata normal form. 2/997 useless extension candidates. Maximal degree in co-relation 7934. Up to 968 conditions per place. [2024-06-20 15:41:48,075 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 201 selfloop transitions, 14 changer transitions 0/217 dead transitions. [2024-06-20 15:41:48,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 217 transitions, 2885 flow [2024-06-20 15:41:48,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:48,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:48,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-20 15:41:48,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-20 15:41:48,077 INFO L175 Difference]: Start difference. First operand has 220 places, 205 transitions, 2394 flow. Second operand 9 states and 97 transitions. [2024-06-20 15:41:48,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 217 transitions, 2885 flow [2024-06-20 15:41:48,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 217 transitions, 2811 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-20 15:41:48,258 INFO L231 Difference]: Finished difference. Result has 221 places, 207 transitions, 2391 flow [2024-06-20 15:41:48,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2391, PETRI_PLACES=221, PETRI_TRANSITIONS=207} [2024-06-20 15:41:48,258 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-20 15:41:48,258 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 207 transitions, 2391 flow [2024-06-20 15:41:48,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:48,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:48,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:48,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-20 15:41:48,259 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:48,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:48,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1465110763, now seen corresponding path program 10 times [2024-06-20 15:41:48,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:48,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390622694] [2024-06-20 15:41:48,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:48,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:49,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:49,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390622694] [2024-06-20 15:41:49,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390622694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:49,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:49,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:49,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865614057] [2024-06-20 15:41:49,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:49,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:49,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:49,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:49,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:49,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:49,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 207 transitions, 2391 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:49,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:49,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:49,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:49,674 INFO L124 PetriNetUnfolderBase]: 611/1053 cut-off events. [2024-06-20 15:41:49,674 INFO L125 PetriNetUnfolderBase]: For 97487/97487 co-relation queries the response was YES. [2024-06-20 15:41:49,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8626 conditions, 1053 events. 611/1053 cut-off events. For 97487/97487 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5080 event pairs, 76 based on Foata normal form. 4/1055 useless extension candidates. Maximal degree in co-relation 8523. Up to 945 conditions per place. [2024-06-20 15:41:49,682 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 199 selfloop transitions, 28 changer transitions 0/229 dead transitions. [2024-06-20 15:41:49,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 229 transitions, 3159 flow [2024-06-20 15:41:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-20 15:41:49,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-20 15:41:49,683 INFO L175 Difference]: Start difference. First operand has 221 places, 207 transitions, 2391 flow. Second operand 10 states and 115 transitions. [2024-06-20 15:41:49,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 229 transitions, 3159 flow [2024-06-20 15:41:49,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 229 transitions, 3097 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-20 15:41:49,871 INFO L231 Difference]: Finished difference. Result has 222 places, 214 transitions, 2538 flow [2024-06-20 15:41:49,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2538, PETRI_PLACES=222, PETRI_TRANSITIONS=214} [2024-06-20 15:41:49,871 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-20 15:41:49,872 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 214 transitions, 2538 flow [2024-06-20 15:41:49,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:49,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:49,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:49,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-20 15:41:49,872 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:49,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:49,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2097100455, now seen corresponding path program 11 times [2024-06-20 15:41:49,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:49,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808134867] [2024-06-20 15:41:49,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:49,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:50,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:50,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808134867] [2024-06-20 15:41:50,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808134867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:50,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:50,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:50,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663692561] [2024-06-20 15:41:50,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:50,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:50,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:50,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:50,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:50,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:50,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 214 transitions, 2538 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:50,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:50,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:50,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:51,322 INFO L124 PetriNetUnfolderBase]: 633/1089 cut-off events. [2024-06-20 15:41:51,323 INFO L125 PetriNetUnfolderBase]: For 104772/104772 co-relation queries the response was YES. [2024-06-20 15:41:51,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9120 conditions, 1089 events. 633/1089 cut-off events. For 104772/104772 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5291 event pairs, 72 based on Foata normal form. 4/1091 useless extension candidates. Maximal degree in co-relation 9018. Up to 839 conditions per place. [2024-06-20 15:41:51,332 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 180 selfloop transitions, 55 changer transitions 0/237 dead transitions. [2024-06-20 15:41:51,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 237 transitions, 3446 flow [2024-06-20 15:41:51,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:51,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:51,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 15:41:51,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 15:41:51,333 INFO L175 Difference]: Start difference. First operand has 222 places, 214 transitions, 2538 flow. Second operand 10 states and 123 transitions. [2024-06-20 15:41:51,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 237 transitions, 3446 flow [2024-06-20 15:41:51,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 237 transitions, 3328 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:51,548 INFO L231 Difference]: Finished difference. Result has 225 places, 220 transitions, 2666 flow [2024-06-20 15:41:51,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2420, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2666, PETRI_PLACES=225, PETRI_TRANSITIONS=220} [2024-06-20 15:41:51,548 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-20 15:41:51,548 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 220 transitions, 2666 flow [2024-06-20 15:41:51,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:51,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:51,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:51,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-20 15:41:51,549 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:51,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:51,549 INFO L85 PathProgramCache]: Analyzing trace with hash -944072731, now seen corresponding path program 4 times [2024-06-20 15:41:51,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:51,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554722398] [2024-06-20 15:41:51,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:51,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:52,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:52,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554722398] [2024-06-20 15:41:52,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554722398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:52,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:52,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 15:41:52,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360149433] [2024-06-20 15:41:52,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:52,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 15:41:52,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:52,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 15:41:52,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 15:41:52,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:52,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 220 transitions, 2666 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:52,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:52,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:52,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:52,832 INFO L124 PetriNetUnfolderBase]: 637/1097 cut-off events. [2024-06-20 15:41:52,832 INFO L125 PetriNetUnfolderBase]: For 103569/103569 co-relation queries the response was YES. [2024-06-20 15:41:52,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9200 conditions, 1097 events. 637/1097 cut-off events. For 103569/103569 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5340 event pairs, 93 based on Foata normal form. 2/1097 useless extension candidates. Maximal degree in co-relation 9097. Up to 1060 conditions per place. [2024-06-20 15:41:52,841 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 212 selfloop transitions, 17 changer transitions 0/231 dead transitions. [2024-06-20 15:41:52,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 231 transitions, 3162 flow [2024-06-20 15:41:52,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:52,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:52,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-20 15:41:52,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-20 15:41:52,842 INFO L175 Difference]: Start difference. First operand has 225 places, 220 transitions, 2666 flow. Second operand 9 states and 98 transitions. [2024-06-20 15:41:52,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 231 transitions, 3162 flow [2024-06-20 15:41:53,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 231 transitions, 2896 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-20 15:41:53,072 INFO L231 Difference]: Finished difference. Result has 226 places, 221 transitions, 2455 flow [2024-06-20 15:41:53,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2400, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2455, PETRI_PLACES=226, PETRI_TRANSITIONS=221} [2024-06-20 15:41:53,072 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-20 15:41:53,072 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 221 transitions, 2455 flow [2024-06-20 15:41:53,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:53,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:53,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:53,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-20 15:41:53,073 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:53,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:53,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1229412169, now seen corresponding path program 12 times [2024-06-20 15:41:53,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:53,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204637961] [2024-06-20 15:41:53,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:53,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:53,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:53,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:53,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204637961] [2024-06-20 15:41:53,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204637961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:53,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:53,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:53,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877502167] [2024-06-20 15:41:53,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:53,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:53,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:53,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:53,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:54,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:54,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 221 transitions, 2455 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:54,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:54,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:54,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:54,486 INFO L124 PetriNetUnfolderBase]: 633/1091 cut-off events. [2024-06-20 15:41:54,487 INFO L125 PetriNetUnfolderBase]: For 101691/101691 co-relation queries the response was YES. [2024-06-20 15:41:54,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8720 conditions, 1091 events. 633/1091 cut-off events. For 101691/101691 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5303 event pairs, 72 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 8617. Up to 988 conditions per place. [2024-06-20 15:41:54,495 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 205 selfloop transitions, 29 changer transitions 0/236 dead transitions. [2024-06-20 15:41:54,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 236 transitions, 3110 flow [2024-06-20 15:41:54,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:54,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:54,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-20 15:41:54,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-20 15:41:54,496 INFO L175 Difference]: Start difference. First operand has 226 places, 221 transitions, 2455 flow. Second operand 10 states and 116 transitions. [2024-06-20 15:41:54,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 236 transitions, 3110 flow [2024-06-20 15:41:54,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 236 transitions, 3067 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:54,705 INFO L231 Difference]: Finished difference. Result has 229 places, 222 transitions, 2496 flow [2024-06-20 15:41:54,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2412, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2496, PETRI_PLACES=229, PETRI_TRANSITIONS=222} [2024-06-20 15:41:54,706 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-20 15:41:54,706 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 222 transitions, 2496 flow [2024-06-20 15:41:54,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:54,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:54,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:54,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-20 15:41:54,707 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:54,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:54,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1229418865, now seen corresponding path program 3 times [2024-06-20 15:41:54,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:54,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821066969] [2024-06-20 15:41:54,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:54,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:55,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:55,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821066969] [2024-06-20 15:41:55,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821066969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:55,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:55,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:55,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986540478] [2024-06-20 15:41:55,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:55,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:55,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:55,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:55,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:55,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:55,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 222 transitions, 2496 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:55,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:55,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:55,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:56,195 INFO L124 PetriNetUnfolderBase]: 625/1078 cut-off events. [2024-06-20 15:41:56,196 INFO L125 PetriNetUnfolderBase]: For 99905/99905 co-relation queries the response was YES. [2024-06-20 15:41:56,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8522 conditions, 1078 events. 625/1078 cut-off events. For 99905/99905 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5234 event pairs, 85 based on Foata normal form. 3/1079 useless extension candidates. Maximal degree in co-relation 8418. Up to 1022 conditions per place. [2024-06-20 15:41:56,204 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 212 selfloop transitions, 21 changer transitions 0/235 dead transitions. [2024-06-20 15:41:56,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 235 transitions, 2998 flow [2024-06-20 15:41:56,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:56,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:56,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-20 15:41:56,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-20 15:41:56,205 INFO L175 Difference]: Start difference. First operand has 229 places, 222 transitions, 2496 flow. Second operand 10 states and 113 transitions. [2024-06-20 15:41:56,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 235 transitions, 2998 flow [2024-06-20 15:41:56,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 235 transitions, 2918 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-20 15:41:56,431 INFO L231 Difference]: Finished difference. Result has 232 places, 222 transitions, 2464 flow [2024-06-20 15:41:56,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2464, PETRI_PLACES=232, PETRI_TRANSITIONS=222} [2024-06-20 15:41:56,431 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-20 15:41:56,431 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 222 transitions, 2464 flow [2024-06-20 15:41:56,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:56,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:56,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:56,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-20 15:41:56,432 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:56,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:56,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1750447783, now seen corresponding path program 13 times [2024-06-20 15:41:56,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:56,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520598104] [2024-06-20 15:41:56,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:56,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:57,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:57,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520598104] [2024-06-20 15:41:57,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520598104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:57,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:57,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:57,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234505619] [2024-06-20 15:41:57,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:57,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:57,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:57,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:57,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:57,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:57,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 222 transitions, 2464 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:57,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:57,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:57,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:57,837 INFO L124 PetriNetUnfolderBase]: 617/1066 cut-off events. [2024-06-20 15:41:57,837 INFO L125 PetriNetUnfolderBase]: For 96439/96439 co-relation queries the response was YES. [2024-06-20 15:41:57,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8178 conditions, 1066 events. 617/1066 cut-off events. For 96439/96439 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5176 event pairs, 81 based on Foata normal form. 4/1068 useless extension candidates. Maximal degree in co-relation 8073. Up to 1011 conditions per place. [2024-06-20 15:41:57,845 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 215 selfloop transitions, 20 changer transitions 0/237 dead transitions. [2024-06-20 15:41:57,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 237 transitions, 3008 flow [2024-06-20 15:41:57,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:41:57,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:41:57,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-20 15:41:57,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 15:41:57,846 INFO L175 Difference]: Start difference. First operand has 232 places, 222 transitions, 2464 flow. Second operand 10 states and 110 transitions. [2024-06-20 15:41:57,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 237 transitions, 3008 flow [2024-06-20 15:41:58,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 237 transitions, 2917 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-20 15:41:58,065 INFO L231 Difference]: Finished difference. Result has 232 places, 224 transitions, 2450 flow [2024-06-20 15:41:58,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2373, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2450, PETRI_PLACES=232, PETRI_TRANSITIONS=224} [2024-06-20 15:41:58,065 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-20 15:41:58,065 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 224 transitions, 2450 flow [2024-06-20 15:41:58,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:58,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:58,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:58,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-20 15:41:58,066 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:58,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:58,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1760932231, now seen corresponding path program 5 times [2024-06-20 15:41:58,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:58,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184916361] [2024-06-20 15:41:58,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:58,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:41:58,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:41:58,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:41:58,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184916361] [2024-06-20 15:41:58,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184916361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:41:58,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:41:58,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:41:58,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281766471] [2024-06-20 15:41:58,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:41:58,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:41:58,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:41:58,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:41:58,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:41:58,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:41:58,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 224 transitions, 2450 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:58,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:41:58,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:41:58,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:41:59,292 INFO L124 PetriNetUnfolderBase]: 614/1061 cut-off events. [2024-06-20 15:41:59,292 INFO L125 PetriNetUnfolderBase]: For 90100/90100 co-relation queries the response was YES. [2024-06-20 15:41:59,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8031 conditions, 1061 events. 614/1061 cut-off events. For 90100/90100 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5142 event pairs, 84 based on Foata normal form. 2/1061 useless extension candidates. Maximal degree in co-relation 7925. Up to 1027 conditions per place. [2024-06-20 15:41:59,301 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 218 selfloop transitions, 14 changer transitions 0/234 dead transitions. [2024-06-20 15:41:59,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 234 transitions, 2936 flow [2024-06-20 15:41:59,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 15:41:59,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 15:41:59,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-20 15:41:59,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-20 15:41:59,302 INFO L175 Difference]: Start difference. First operand has 232 places, 224 transitions, 2450 flow. Second operand 9 states and 96 transitions. [2024-06-20 15:41:59,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 234 transitions, 2936 flow [2024-06-20 15:41:59,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 234 transitions, 2875 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-20 15:41:59,507 INFO L231 Difference]: Finished difference. Result has 233 places, 224 transitions, 2421 flow [2024-06-20 15:41:59,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2421, PETRI_PLACES=233, PETRI_TRANSITIONS=224} [2024-06-20 15:41:59,507 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-20 15:41:59,507 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 224 transitions, 2421 flow [2024-06-20 15:41:59,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:41:59,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:41:59,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:41:59,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-20 15:41:59,508 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:41:59,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:41:59,508 INFO L85 PathProgramCache]: Analyzing trace with hash -597256007, now seen corresponding path program 14 times [2024-06-20 15:41:59,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:41:59,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308984537] [2024-06-20 15:41:59,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:41:59,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:41:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:00,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:00,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308984537] [2024-06-20 15:42:00,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308984537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:00,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:00,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:00,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672932076] [2024-06-20 15:42:00,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:00,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:00,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:00,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:00,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:00,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:00,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 224 transitions, 2421 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:00,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:00,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:00,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:01,041 INFO L124 PetriNetUnfolderBase]: 646/1113 cut-off events. [2024-06-20 15:42:01,041 INFO L125 PetriNetUnfolderBase]: For 105930/105930 co-relation queries the response was YES. [2024-06-20 15:42:01,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8642 conditions, 1113 events. 646/1113 cut-off events. For 105930/105930 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5443 event pairs, 74 based on Foata normal form. 4/1115 useless extension candidates. Maximal degree in co-relation 8535. Up to 842 conditions per place. [2024-06-20 15:42:01,051 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 192 selfloop transitions, 57 changer transitions 0/251 dead transitions. [2024-06-20 15:42:01,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 251 transitions, 3551 flow [2024-06-20 15:42:01,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:01,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-20 15:42:01,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-20 15:42:01,059 INFO L175 Difference]: Start difference. First operand has 233 places, 224 transitions, 2421 flow. Second operand 10 states and 126 transitions. [2024-06-20 15:42:01,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 251 transitions, 3551 flow [2024-06-20 15:42:01,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 251 transitions, 3488 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-20 15:42:01,311 INFO L231 Difference]: Finished difference. Result has 235 places, 231 transitions, 2601 flow [2024-06-20 15:42:01,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2358, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2601, PETRI_PLACES=235, PETRI_TRANSITIONS=231} [2024-06-20 15:42:01,311 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-20 15:42:01,311 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 231 transitions, 2601 flow [2024-06-20 15:42:01,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:01,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:01,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:01,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-20 15:42:01,312 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:01,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:01,312 INFO L85 PathProgramCache]: Analyzing trace with hash -597249497, now seen corresponding path program 15 times [2024-06-20 15:42:01,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:01,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121710281] [2024-06-20 15:42:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:01,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:02,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:02,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:02,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121710281] [2024-06-20 15:42:02,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121710281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:02,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:02,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:02,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904015636] [2024-06-20 15:42:02,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:02,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:02,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:02,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:02,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:02,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:02,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 231 transitions, 2601 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:02,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:02,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:02,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:02,928 INFO L124 PetriNetUnfolderBase]: 642/1107 cut-off events. [2024-06-20 15:42:02,928 INFO L125 PetriNetUnfolderBase]: For 99252/99252 co-relation queries the response was YES. [2024-06-20 15:42:02,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8607 conditions, 1107 events. 642/1107 cut-off events. For 99252/99252 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5379 event pairs, 77 based on Foata normal form. 2/1107 useless extension candidates. Maximal degree in co-relation 8499. Up to 841 conditions per place. [2024-06-20 15:42:02,937 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 186 selfloop transitions, 61 changer transitions 0/249 dead transitions. [2024-06-20 15:42:02,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 249 transitions, 3458 flow [2024-06-20 15:42:02,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:02,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 15:42:02,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 15:42:02,939 INFO L175 Difference]: Start difference. First operand has 235 places, 231 transitions, 2601 flow. Second operand 10 states and 124 transitions. [2024-06-20 15:42:02,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 249 transitions, 3458 flow [2024-06-20 15:42:03,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 249 transitions, 3317 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-20 15:42:03,195 INFO L231 Difference]: Finished difference. Result has 238 places, 232 transitions, 2612 flow [2024-06-20 15:42:03,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2460, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2612, PETRI_PLACES=238, PETRI_TRANSITIONS=232} [2024-06-20 15:42:03,196 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-20 15:42:03,196 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 232 transitions, 2612 flow [2024-06-20 15:42:03,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:03,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:03,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:03,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-20 15:42:03,196 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:03,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:03,197 INFO L85 PathProgramCache]: Analyzing trace with hash -590993387, now seen corresponding path program 16 times [2024-06-20 15:42:03,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:03,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679399033] [2024-06-20 15:42:03,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:03,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:04,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:04,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:04,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679399033] [2024-06-20 15:42:04,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679399033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:04,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:04,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:04,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517809710] [2024-06-20 15:42:04,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:04,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:04,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:04,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:04,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:04,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:04,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 232 transitions, 2612 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:04,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:04,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:04,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:04,809 INFO L124 PetriNetUnfolderBase]: 648/1117 cut-off events. [2024-06-20 15:42:04,809 INFO L125 PetriNetUnfolderBase]: For 102645/102645 co-relation queries the response was YES. [2024-06-20 15:42:04,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8661 conditions, 1117 events. 648/1117 cut-off events. For 102645/102645 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5482 event pairs, 83 based on Foata normal form. 2/1117 useless extension candidates. Maximal degree in co-relation 8553. Up to 1037 conditions per place. [2024-06-20 15:42:04,818 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 221 selfloop transitions, 27 changer transitions 0/250 dead transitions. [2024-06-20 15:42:04,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 250 transitions, 3355 flow [2024-06-20 15:42:04,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:04,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:04,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-20 15:42:04,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-20 15:42:04,819 INFO L175 Difference]: Start difference. First operand has 238 places, 232 transitions, 2612 flow. Second operand 10 states and 118 transitions. [2024-06-20 15:42:04,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 250 transitions, 3355 flow [2024-06-20 15:42:05,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 250 transitions, 3223 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-20 15:42:05,083 INFO L231 Difference]: Finished difference. Result has 242 places, 235 transitions, 2611 flow [2024-06-20 15:42:05,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2482, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2611, PETRI_PLACES=242, PETRI_TRANSITIONS=235} [2024-06-20 15:42:05,083 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-20 15:42:05,084 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 235 transitions, 2611 flow [2024-06-20 15:42:05,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:05,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:05,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:05,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-20 15:42:05,084 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:05,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:05,084 INFO L85 PathProgramCache]: Analyzing trace with hash -590999897, now seen corresponding path program 17 times [2024-06-20 15:42:05,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:05,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594769330] [2024-06-20 15:42:05,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:05,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:06,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:06,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:06,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594769330] [2024-06-20 15:42:06,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594769330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:06,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:06,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:06,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891335675] [2024-06-20 15:42:06,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:06,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:06,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:06,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:06,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:06,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:06,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 235 transitions, 2611 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:06,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:06,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:06,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:06,513 INFO L124 PetriNetUnfolderBase]: 650/1121 cut-off events. [2024-06-20 15:42:06,513 INFO L125 PetriNetUnfolderBase]: For 105487/105487 co-relation queries the response was YES. [2024-06-20 15:42:06,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8468 conditions, 1121 events. 650/1121 cut-off events. For 105487/105487 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5505 event pairs, 81 based on Foata normal form. 4/1123 useless extension candidates. Maximal degree in co-relation 8358. Up to 1012 conditions per place. [2024-06-20 15:42:06,521 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 218 selfloop transitions, 32 changer transitions 0/252 dead transitions. [2024-06-20 15:42:06,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 252 transitions, 3329 flow [2024-06-20 15:42:06,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:06,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:06,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-20 15:42:06,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-20 15:42:06,523 INFO L175 Difference]: Start difference. First operand has 242 places, 235 transitions, 2611 flow. Second operand 10 states and 119 transitions. [2024-06-20 15:42:06,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 252 transitions, 3329 flow [2024-06-20 15:42:06,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 252 transitions, 3186 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-20 15:42:06,774 INFO L231 Difference]: Finished difference. Result has 245 places, 237 transitions, 2572 flow [2024-06-20 15:42:06,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2468, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2572, PETRI_PLACES=245, PETRI_TRANSITIONS=237} [2024-06-20 15:42:06,775 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-20 15:42:06,775 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 237 transitions, 2572 flow [2024-06-20 15:42:06,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:06,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:06,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:06,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-20 15:42:06,775 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:06,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:06,776 INFO L85 PathProgramCache]: Analyzing trace with hash -200609356, now seen corresponding path program 1 times [2024-06-20 15:42:06,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:06,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962609181] [2024-06-20 15:42:06,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:06,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:08,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:08,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:08,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962609181] [2024-06-20 15:42:08,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962609181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:08,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:08,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:08,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696259013] [2024-06-20 15:42:08,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:08,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:08,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:08,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:08,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:08,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:08,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 237 transitions, 2572 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:08,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:08,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:08,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:08,773 INFO L124 PetriNetUnfolderBase]: 661/1142 cut-off events. [2024-06-20 15:42:08,773 INFO L125 PetriNetUnfolderBase]: For 108899/108899 co-relation queries the response was YES. [2024-06-20 15:42:08,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8568 conditions, 1142 events. 661/1142 cut-off events. For 108899/108899 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5660 event pairs, 79 based on Foata normal form. 2/1142 useless extension candidates. Maximal degree in co-relation 8458. Up to 1016 conditions per place. [2024-06-20 15:42:08,784 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 241 selfloop transitions, 23 changer transitions 0/266 dead transitions. [2024-06-20 15:42:08,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 266 transitions, 3338 flow [2024-06-20 15:42:08,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:42:08,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:42:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-20 15:42:08,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-20 15:42:08,785 INFO L175 Difference]: Start difference. First operand has 245 places, 237 transitions, 2572 flow. Second operand 12 states and 140 transitions. [2024-06-20 15:42:08,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 266 transitions, 3338 flow [2024-06-20 15:42:09,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 266 transitions, 3184 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-20 15:42:09,045 INFO L231 Difference]: Finished difference. Result has 247 places, 239 transitions, 2490 flow [2024-06-20 15:42:09,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2490, PETRI_PLACES=247, PETRI_TRANSITIONS=239} [2024-06-20 15:42:09,046 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-20 15:42:09,046 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 239 transitions, 2490 flow [2024-06-20 15:42:09,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:09,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:09,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:09,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-20 15:42:09,046 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:09,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:09,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1400826142, now seen corresponding path program 2 times [2024-06-20 15:42:09,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:09,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290810261] [2024-06-20 15:42:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:09,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:10,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:10,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:10,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290810261] [2024-06-20 15:42:10,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290810261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:10,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:10,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:10,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79196244] [2024-06-20 15:42:10,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:10,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:10,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:10,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:10,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:10,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:10,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 239 transitions, 2490 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:10,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:10,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:10,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:10,810 INFO L124 PetriNetUnfolderBase]: 668/1155 cut-off events. [2024-06-20 15:42:10,810 INFO L125 PetriNetUnfolderBase]: For 111025/111025 co-relation queries the response was YES. [2024-06-20 15:42:10,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8558 conditions, 1155 events. 668/1155 cut-off events. For 111025/111025 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5751 event pairs, 97 based on Foata normal form. 2/1155 useless extension candidates. Maximal degree in co-relation 8448. Up to 1085 conditions per place. [2024-06-20 15:42:10,821 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 240 selfloop transitions, 24 changer transitions 0/266 dead transitions. [2024-06-20 15:42:10,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 266 transitions, 3122 flow [2024-06-20 15:42:10,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:42:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:42:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-20 15:42:10,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-20 15:42:10,822 INFO L175 Difference]: Start difference. First operand has 247 places, 239 transitions, 2490 flow. Second operand 12 states and 138 transitions. [2024-06-20 15:42:10,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 266 transitions, 3122 flow [2024-06-20 15:42:11,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 266 transitions, 3084 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-20 15:42:11,106 INFO L231 Difference]: Finished difference. Result has 253 places, 242 transitions, 2544 flow [2024-06-20 15:42:11,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2544, PETRI_PLACES=253, PETRI_TRANSITIONS=242} [2024-06-20 15:42:11,106 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-20 15:42:11,106 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 242 transitions, 2544 flow [2024-06-20 15:42:11,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:11,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:11,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:11,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-20 15:42:11,107 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:11,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:11,107 INFO L85 PathProgramCache]: Analyzing trace with hash -198735406, now seen corresponding path program 3 times [2024-06-20 15:42:11,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:11,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550565404] [2024-06-20 15:42:11,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:11,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:12,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:12,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550565404] [2024-06-20 15:42:12,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550565404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:12,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:12,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:12,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387238269] [2024-06-20 15:42:12,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:12,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:12,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:12,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:12,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:12,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:12,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 242 transitions, 2544 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:12,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:12,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:12,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:13,011 INFO L124 PetriNetUnfolderBase]: 672/1163 cut-off events. [2024-06-20 15:42:13,012 INFO L125 PetriNetUnfolderBase]: For 114177/114177 co-relation queries the response was YES. [2024-06-20 15:42:13,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8640 conditions, 1163 events. 672/1163 cut-off events. For 114177/114177 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5808 event pairs, 97 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 8528. Up to 1079 conditions per place. [2024-06-20 15:42:13,020 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 241 selfloop transitions, 25 changer transitions 0/268 dead transitions. [2024-06-20 15:42:13,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 268 transitions, 3154 flow [2024-06-20 15:42:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:42:13,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:42:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-20 15:42:13,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-20 15:42:13,021 INFO L175 Difference]: Start difference. First operand has 253 places, 242 transitions, 2544 flow. Second operand 12 states and 140 transitions. [2024-06-20 15:42:13,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 268 transitions, 3154 flow [2024-06-20 15:42:13,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 268 transitions, 3105 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-20 15:42:13,302 INFO L231 Difference]: Finished difference. Result has 256 places, 243 transitions, 2561 flow [2024-06-20 15:42:13,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2495, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2561, PETRI_PLACES=256, PETRI_TRANSITIONS=243} [2024-06-20 15:42:13,303 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-20 15:42:13,303 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 243 transitions, 2561 flow [2024-06-20 15:42:13,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:13,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:13,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:13,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-20 15:42:13,304 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:13,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:13,304 INFO L85 PathProgramCache]: Analyzing trace with hash 536656464, now seen corresponding path program 4 times [2024-06-20 15:42:13,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:13,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452126183] [2024-06-20 15:42:13,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:13,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:14,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:14,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:14,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452126183] [2024-06-20 15:42:14,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452126183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:14,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:14,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:14,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879261641] [2024-06-20 15:42:14,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:14,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:14,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:14,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:14,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:14,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:14,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 243 transitions, 2561 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:14,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:14,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:14,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:14,903 INFO L124 PetriNetUnfolderBase]: 676/1171 cut-off events. [2024-06-20 15:42:14,904 INFO L125 PetriNetUnfolderBase]: For 117307/117307 co-relation queries the response was YES. [2024-06-20 15:42:14,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8727 conditions, 1171 events. 676/1171 cut-off events. For 117307/117307 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5876 event pairs, 95 based on Foata normal form. 2/1171 useless extension candidates. Maximal degree in co-relation 8614. Up to 1064 conditions per place. [2024-06-20 15:42:14,914 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 238 selfloop transitions, 25 changer transitions 0/265 dead transitions. [2024-06-20 15:42:14,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 265 transitions, 3307 flow [2024-06-20 15:42:14,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:14,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:14,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-20 15:42:14,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-20 15:42:14,915 INFO L175 Difference]: Start difference. First operand has 256 places, 243 transitions, 2561 flow. Second operand 10 states and 119 transitions. [2024-06-20 15:42:14,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 265 transitions, 3307 flow [2024-06-20 15:42:15,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 265 transitions, 3253 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-20 15:42:15,213 INFO L231 Difference]: Finished difference. Result has 256 places, 244 transitions, 2575 flow [2024-06-20 15:42:15,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2507, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2575, PETRI_PLACES=256, PETRI_TRANSITIONS=244} [2024-06-20 15:42:15,214 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-20 15:42:15,214 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 244 transitions, 2575 flow [2024-06-20 15:42:15,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:15,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:15,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:15,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-20 15:42:15,214 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:15,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:15,214 INFO L85 PathProgramCache]: Analyzing trace with hash 56250294, now seen corresponding path program 5 times [2024-06-20 15:42:15,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:15,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016096688] [2024-06-20 15:42:15,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:15,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:16,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:16,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016096688] [2024-06-20 15:42:16,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016096688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:16,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:16,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:16,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144570060] [2024-06-20 15:42:16,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:16,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:16,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:16,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:16,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:16,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:16,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 244 transitions, 2575 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:16,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:16,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:16,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:17,402 INFO L124 PetriNetUnfolderBase]: 683/1184 cut-off events. [2024-06-20 15:42:17,402 INFO L125 PetriNetUnfolderBase]: For 120556/120556 co-relation queries the response was YES. [2024-06-20 15:42:17,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8845 conditions, 1184 events. 683/1184 cut-off events. For 120556/120556 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5977 event pairs, 99 based on Foata normal form. 2/1184 useless extension candidates. Maximal degree in co-relation 8731. Up to 1128 conditions per place. [2024-06-20 15:42:17,412 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 244 selfloop transitions, 21 changer transitions 0/267 dead transitions. [2024-06-20 15:42:17,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 267 transitions, 3201 flow [2024-06-20 15:42:17,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:42:17,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:42:17,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-20 15:42:17,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-20 15:42:17,413 INFO L175 Difference]: Start difference. First operand has 256 places, 244 transitions, 2575 flow. Second operand 11 states and 125 transitions. [2024-06-20 15:42:17,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 267 transitions, 3201 flow [2024-06-20 15:42:17,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 267 transitions, 3141 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-20 15:42:17,704 INFO L231 Difference]: Finished difference. Result has 259 places, 247 transitions, 2605 flow [2024-06-20 15:42:17,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2605, PETRI_PLACES=259, PETRI_TRANSITIONS=247} [2024-06-20 15:42:17,704 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-20 15:42:17,704 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 247 transitions, 2605 flow [2024-06-20 15:42:17,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:17,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:17,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:17,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-20 15:42:17,704 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:17,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:17,705 INFO L85 PathProgramCache]: Analyzing trace with hash -111889991, now seen corresponding path program 1 times [2024-06-20 15:42:17,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:17,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640323906] [2024-06-20 15:42:17,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:17,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:19,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:19,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640323906] [2024-06-20 15:42:19,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640323906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:19,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:19,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:19,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088953823] [2024-06-20 15:42:19,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:19,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:19,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:19,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:19,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:19,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:19,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 247 transitions, 2605 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:19,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:19,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:19,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:20,258 INFO L124 PetriNetUnfolderBase]: 679/1178 cut-off events. [2024-06-20 15:42:20,258 INFO L125 PetriNetUnfolderBase]: For 117453/117453 co-relation queries the response was YES. [2024-06-20 15:42:20,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8671 conditions, 1178 events. 679/1178 cut-off events. For 117453/117453 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5926 event pairs, 96 based on Foata normal form. 2/1178 useless extension candidates. Maximal degree in co-relation 8556. Up to 1123 conditions per place. [2024-06-20 15:42:20,269 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 247 selfloop transitions, 19 changer transitions 0/268 dead transitions. [2024-06-20 15:42:20,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 268 transitions, 3197 flow [2024-06-20 15:42:20,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:42:20,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:42:20,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-20 15:42:20,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-20 15:42:20,270 INFO L175 Difference]: Start difference. First operand has 259 places, 247 transitions, 2605 flow. Second operand 11 states and 125 transitions. [2024-06-20 15:42:20,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 268 transitions, 3197 flow [2024-06-20 15:42:20,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 268 transitions, 3138 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-20 15:42:20,554 INFO L231 Difference]: Finished difference. Result has 262 places, 247 transitions, 2589 flow [2024-06-20 15:42:20,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2546, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2589, PETRI_PLACES=262, PETRI_TRANSITIONS=247} [2024-06-20 15:42:20,554 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-20 15:42:20,554 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 247 transitions, 2589 flow [2024-06-20 15:42:20,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:20,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:20,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:20,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-20 15:42:20,554 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:20,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:20,555 INFO L85 PathProgramCache]: Analyzing trace with hash -111895726, now seen corresponding path program 6 times [2024-06-20 15:42:20,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:20,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067197896] [2024-06-20 15:42:20,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:20,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:21,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:21,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:21,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067197896] [2024-06-20 15:42:21,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067197896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:21,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:21,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:21,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480730384] [2024-06-20 15:42:21,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:21,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:21,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:21,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:21,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:21,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:21,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 247 transitions, 2589 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:21,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:21,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:21,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:22,369 INFO L124 PetriNetUnfolderBase]: 676/1173 cut-off events. [2024-06-20 15:42:22,369 INFO L125 PetriNetUnfolderBase]: For 114192/114192 co-relation queries the response was YES. [2024-06-20 15:42:22,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8501 conditions, 1173 events. 676/1173 cut-off events. For 114192/114192 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5907 event pairs, 97 based on Foata normal form. 2/1173 useless extension candidates. Maximal degree in co-relation 8385. Up to 1090 conditions per place. [2024-06-20 15:42:22,378 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 237 selfloop transitions, 27 changer transitions 0/266 dead transitions. [2024-06-20 15:42:22,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 266 transitions, 3169 flow [2024-06-20 15:42:22,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:22,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:22,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-20 15:42:22,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-20 15:42:22,379 INFO L175 Difference]: Start difference. First operand has 262 places, 247 transitions, 2589 flow. Second operand 10 states and 117 transitions. [2024-06-20 15:42:22,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 266 transitions, 3169 flow [2024-06-20 15:42:22,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 266 transitions, 3082 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-20 15:42:22,689 INFO L231 Difference]: Finished difference. Result has 260 places, 247 transitions, 2564 flow [2024-06-20 15:42:22,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2502, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2564, PETRI_PLACES=260, PETRI_TRANSITIONS=247} [2024-06-20 15:42:22,689 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-20 15:42:22,689 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 247 transitions, 2564 flow [2024-06-20 15:42:22,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:22,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:22,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:22,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-20 15:42:22,690 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:22,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:22,690 INFO L85 PathProgramCache]: Analyzing trace with hash -832984622, now seen corresponding path program 7 times [2024-06-20 15:42:22,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:22,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873397914] [2024-06-20 15:42:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:22,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:24,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:24,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:24,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873397914] [2024-06-20 15:42:24,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873397914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:24,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:24,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:24,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835946739] [2024-06-20 15:42:24,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:24,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:24,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:24,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:24,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:24,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:24,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 247 transitions, 2564 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:24,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:24,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:24,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:24,849 INFO L124 PetriNetUnfolderBase]: 687/1194 cut-off events. [2024-06-20 15:42:24,849 INFO L125 PetriNetUnfolderBase]: For 123425/123425 co-relation queries the response was YES. [2024-06-20 15:42:24,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8778 conditions, 1194 events. 687/1194 cut-off events. For 123425/123425 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6063 event pairs, 80 based on Foata normal form. 2/1194 useless extension candidates. Maximal degree in co-relation 8661. Up to 967 conditions per place. [2024-06-20 15:42:24,860 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 201 selfloop transitions, 67 changer transitions 0/270 dead transitions. [2024-06-20 15:42:24,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 270 transitions, 3340 flow [2024-06-20 15:42:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:42:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:42:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 15:42:24,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-20 15:42:24,861 INFO L175 Difference]: Start difference. First operand has 260 places, 247 transitions, 2564 flow. Second operand 11 states and 137 transitions. [2024-06-20 15:42:24,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 270 transitions, 3340 flow [2024-06-20 15:42:25,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 270 transitions, 3270 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-20 15:42:25,178 INFO L231 Difference]: Finished difference. Result has 262 places, 249 transitions, 2664 flow [2024-06-20 15:42:25,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2500, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2664, PETRI_PLACES=262, PETRI_TRANSITIONS=249} [2024-06-20 15:42:25,178 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-20 15:42:25,178 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 249 transitions, 2664 flow [2024-06-20 15:42:25,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:25,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:25,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:25,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-20 15:42:25,179 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:25,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:25,179 INFO L85 PathProgramCache]: Analyzing trace with hash -827258891, now seen corresponding path program 1 times [2024-06-20 15:42:25,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:25,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233118600] [2024-06-20 15:42:25,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:25,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:26,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:26,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233118600] [2024-06-20 15:42:26,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233118600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:26,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:26,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:26,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862120793] [2024-06-20 15:42:26,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:26,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:26,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:26,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:26,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:27,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:27,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 249 transitions, 2664 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:27,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:27,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:27,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:27,486 INFO L124 PetriNetUnfolderBase]: 694/1207 cut-off events. [2024-06-20 15:42:27,487 INFO L125 PetriNetUnfolderBase]: For 117992/117992 co-relation queries the response was YES. [2024-06-20 15:42:27,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8852 conditions, 1207 events. 694/1207 cut-off events. For 117992/117992 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6159 event pairs, 54 based on Foata normal form. 2/1207 useless extension candidates. Maximal degree in co-relation 8734. Up to 1032 conditions per place. [2024-06-20 15:42:27,498 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 216 selfloop transitions, 53 changer transitions 0/271 dead transitions. [2024-06-20 15:42:27,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 271 transitions, 3272 flow [2024-06-20 15:42:27,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:27,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 15:42:27,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 15:42:27,499 INFO L175 Difference]: Start difference. First operand has 262 places, 249 transitions, 2664 flow. Second operand 10 states and 123 transitions. [2024-06-20 15:42:27,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 271 transitions, 3272 flow [2024-06-20 15:42:27,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 271 transitions, 3168 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-20 15:42:27,846 INFO L231 Difference]: Finished difference. Result has 266 places, 252 transitions, 2726 flow [2024-06-20 15:42:27,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2726, PETRI_PLACES=266, PETRI_TRANSITIONS=252} [2024-06-20 15:42:27,847 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-20 15:42:27,847 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 252 transitions, 2726 flow [2024-06-20 15:42:27,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:27,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:27,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:27,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-20 15:42:27,847 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:27,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:27,848 INFO L85 PathProgramCache]: Analyzing trace with hash -827266827, now seen corresponding path program 2 times [2024-06-20 15:42:27,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:27,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691744224] [2024-06-20 15:42:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:27,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:29,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:29,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691744224] [2024-06-20 15:42:29,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691744224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:29,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:29,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:29,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898188887] [2024-06-20 15:42:29,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:29,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:29,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:29,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:29,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:29,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:29,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 252 transitions, 2726 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:29,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:29,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:29,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:29,861 INFO L124 PetriNetUnfolderBase]: 700/1217 cut-off events. [2024-06-20 15:42:29,861 INFO L125 PetriNetUnfolderBase]: For 120860/120860 co-relation queries the response was YES. [2024-06-20 15:42:29,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9086 conditions, 1217 events. 700/1217 cut-off events. For 120860/120860 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6212 event pairs, 75 based on Foata normal form. 2/1217 useless extension candidates. Maximal degree in co-relation 8966. Up to 605 conditions per place. [2024-06-20 15:42:29,872 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 150 selfloop transitions, 127 changer transitions 0/279 dead transitions. [2024-06-20 15:42:29,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 279 transitions, 3854 flow [2024-06-20 15:42:29,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:42:29,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:42:29,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-20 15:42:29,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281524926686217 [2024-06-20 15:42:29,873 INFO L175 Difference]: Start difference. First operand has 266 places, 252 transitions, 2726 flow. Second operand 11 states and 146 transitions. [2024-06-20 15:42:29,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 279 transitions, 3854 flow [2024-06-20 15:42:30,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 279 transitions, 3780 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-20 15:42:30,223 INFO L231 Difference]: Finished difference. Result has 270 places, 254 transitions, 2939 flow [2024-06-20 15:42:30,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2652, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2939, PETRI_PLACES=270, PETRI_TRANSITIONS=254} [2024-06-20 15:42:30,224 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-20 15:42:30,224 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 254 transitions, 2939 flow [2024-06-20 15:42:30,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:30,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:30,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:30,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-20 15:42:30,224 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:30,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:30,225 INFO L85 PathProgramCache]: Analyzing trace with hash 194928329, now seen corresponding path program 3 times [2024-06-20 15:42:30,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:30,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659767415] [2024-06-20 15:42:30,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:30,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:31,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:31,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659767415] [2024-06-20 15:42:31,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659767415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:31,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:31,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:31,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889841469] [2024-06-20 15:42:31,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:31,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:31,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:31,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:31,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:31,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:31,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 254 transitions, 2939 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:31,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:31,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:31,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:32,320 INFO L124 PetriNetUnfolderBase]: 706/1227 cut-off events. [2024-06-20 15:42:32,320 INFO L125 PetriNetUnfolderBase]: For 125623/125623 co-relation queries the response was YES. [2024-06-20 15:42:32,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9421 conditions, 1227 events. 706/1227 cut-off events. For 125623/125623 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6324 event pairs, 62 based on Foata normal form. 2/1227 useless extension candidates. Maximal degree in co-relation 9300. Up to 884 conditions per place. [2024-06-20 15:42:32,331 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 190 selfloop transitions, 86 changer transitions 0/278 dead transitions. [2024-06-20 15:42:32,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 278 transitions, 3589 flow [2024-06-20 15:42:32,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:42:32,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:42:32,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-20 15:42:32,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-20 15:42:32,334 INFO L175 Difference]: Start difference. First operand has 270 places, 254 transitions, 2939 flow. Second operand 11 states and 140 transitions. [2024-06-20 15:42:32,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 278 transitions, 3589 flow [2024-06-20 15:42:32,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 278 transitions, 3311 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-20 15:42:32,694 INFO L231 Difference]: Finished difference. Result has 272 places, 256 transitions, 2874 flow [2024-06-20 15:42:32,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2665, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2874, PETRI_PLACES=272, PETRI_TRANSITIONS=256} [2024-06-20 15:42:32,695 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-20 15:42:32,695 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 256 transitions, 2874 flow [2024-06-20 15:42:32,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:32,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:32,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:32,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-20 15:42:32,696 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:32,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:32,696 INFO L85 PathProgramCache]: Analyzing trace with hash 200285129, now seen corresponding path program 4 times [2024-06-20 15:42:32,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:32,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816971516] [2024-06-20 15:42:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:32,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:34,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:34,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816971516] [2024-06-20 15:42:34,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816971516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:34,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:34,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:34,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048292951] [2024-06-20 15:42:34,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:34,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:34,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:34,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:34,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:34,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:34,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 256 transitions, 2874 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:34,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:34,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:34,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:34,937 INFO L124 PetriNetUnfolderBase]: 715/1242 cut-off events. [2024-06-20 15:42:34,938 INFO L125 PetriNetUnfolderBase]: For 127594/127594 co-relation queries the response was YES. [2024-06-20 15:42:34,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9406 conditions, 1242 events. 715/1242 cut-off events. For 127594/127594 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6396 event pairs, 49 based on Foata normal form. 2/1242 useless extension candidates. Maximal degree in co-relation 9284. Up to 854 conditions per place. [2024-06-20 15:42:34,949 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 183 selfloop transitions, 98 changer transitions 0/283 dead transitions. [2024-06-20 15:42:34,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 283 transitions, 3714 flow [2024-06-20 15:42:34,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:42:34,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:42:34,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-20 15:42:34,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-20 15:42:34,950 INFO L175 Difference]: Start difference. First operand has 272 places, 256 transitions, 2874 flow. Second operand 11 states and 142 transitions. [2024-06-20 15:42:34,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 283 transitions, 3714 flow [2024-06-20 15:42:35,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 283 transitions, 3525 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-20 15:42:35,330 INFO L231 Difference]: Finished difference. Result has 275 places, 260 transitions, 3001 flow [2024-06-20 15:42:35,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2685, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3001, PETRI_PLACES=275, PETRI_TRANSITIONS=260} [2024-06-20 15:42:35,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-20 15:42:35,330 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 260 transitions, 3001 flow [2024-06-20 15:42:35,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:35,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:35,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:35,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-20 15:42:35,331 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:35,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:35,331 INFO L85 PathProgramCache]: Analyzing trace with hash 672823271, now seen corresponding path program 5 times [2024-06-20 15:42:35,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:35,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78853020] [2024-06-20 15:42:35,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:35,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:37,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:37,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:37,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78853020] [2024-06-20 15:42:37,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78853020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:37,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:37,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:37,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877543630] [2024-06-20 15:42:37,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:37,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:37,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:37,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:37,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:37,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:37,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 260 transitions, 3001 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:37,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:37,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:37,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:38,045 INFO L124 PetriNetUnfolderBase]: 714/1241 cut-off events. [2024-06-20 15:42:38,045 INFO L125 PetriNetUnfolderBase]: For 124222/124222 co-relation queries the response was YES. [2024-06-20 15:42:38,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9436 conditions, 1241 events. 714/1241 cut-off events. For 124222/124222 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6383 event pairs, 74 based on Foata normal form. 2/1241 useless extension candidates. Maximal degree in co-relation 9312. Up to 591 conditions per place. [2024-06-20 15:42:38,055 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 155 selfloop transitions, 129 changer transitions 0/286 dead transitions. [2024-06-20 15:42:38,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 286 transitions, 3977 flow [2024-06-20 15:42:38,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:42:38,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:42:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-20 15:42:38,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-20 15:42:38,056 INFO L175 Difference]: Start difference. First operand has 275 places, 260 transitions, 3001 flow. Second operand 11 states and 147 transitions. [2024-06-20 15:42:38,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 286 transitions, 3977 flow [2024-06-20 15:42:38,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 286 transitions, 3804 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-20 15:42:38,410 INFO L231 Difference]: Finished difference. Result has 280 places, 262 transitions, 3184 flow [2024-06-20 15:42:38,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2828, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3184, PETRI_PLACES=280, PETRI_TRANSITIONS=262} [2024-06-20 15:42:38,410 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-06-20 15:42:38,411 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 262 transitions, 3184 flow [2024-06-20 15:42:38,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:38,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:38,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:38,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-20 15:42:38,411 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:38,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash 200284974, now seen corresponding path program 8 times [2024-06-20 15:42:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:38,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138258991] [2024-06-20 15:42:38,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:38,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:39,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:39,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138258991] [2024-06-20 15:42:39,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138258991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:39,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:39,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:39,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187792220] [2024-06-20 15:42:39,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:39,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:39,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:39,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:39,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:39,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:39,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 262 transitions, 3184 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:39,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:39,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:39,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:39,881 INFO L124 PetriNetUnfolderBase]: 718/1249 cut-off events. [2024-06-20 15:42:39,881 INFO L125 PetriNetUnfolderBase]: For 127967/127967 co-relation queries the response was YES. [2024-06-20 15:42:39,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9773 conditions, 1249 events. 718/1249 cut-off events. For 127967/127967 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6440 event pairs, 85 based on Foata normal form. 2/1249 useless extension candidates. Maximal degree in co-relation 9647. Up to 962 conditions per place. [2024-06-20 15:42:39,892 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 194 selfloop transitions, 85 changer transitions 0/281 dead transitions. [2024-06-20 15:42:39,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 281 transitions, 3800 flow [2024-06-20 15:42:39,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:39,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:39,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-20 15:42:39,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-20 15:42:39,893 INFO L175 Difference]: Start difference. First operand has 280 places, 262 transitions, 3184 flow. Second operand 10 states and 128 transitions. [2024-06-20 15:42:39,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 281 transitions, 3800 flow [2024-06-20 15:42:40,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 281 transitions, 3607 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-20 15:42:40,269 INFO L231 Difference]: Finished difference. Result has 281 places, 263 transitions, 3175 flow [2024-06-20 15:42:40,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2991, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3175, PETRI_PLACES=281, PETRI_TRANSITIONS=263} [2024-06-20 15:42:40,269 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-20 15:42:40,269 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 263 transitions, 3175 flow [2024-06-20 15:42:40,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:40,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:40,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:40,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-20 15:42:40,270 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:40,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:40,270 INFO L85 PathProgramCache]: Analyzing trace with hash 675188489, now seen corresponding path program 6 times [2024-06-20 15:42:40,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:40,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21647880] [2024-06-20 15:42:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:40,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:41,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:41,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:41,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21647880] [2024-06-20 15:42:41,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21647880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:41,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:41,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:41,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733847174] [2024-06-20 15:42:41,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:41,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:41,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:41,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:41,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:41,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:41,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 263 transitions, 3175 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:41,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:41,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:41,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:42,441 INFO L124 PetriNetUnfolderBase]: 727/1264 cut-off events. [2024-06-20 15:42:42,442 INFO L125 PetriNetUnfolderBase]: For 131438/131438 co-relation queries the response was YES. [2024-06-20 15:42:42,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9767 conditions, 1264 events. 727/1264 cut-off events. For 131438/131438 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6550 event pairs, 49 based on Foata normal form. 2/1264 useless extension candidates. Maximal degree in co-relation 9640. Up to 847 conditions per place. [2024-06-20 15:42:42,454 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 182 selfloop transitions, 106 changer transitions 0/290 dead transitions. [2024-06-20 15:42:42,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 290 transitions, 4045 flow [2024-06-20 15:42:42,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:42:42,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:42:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-20 15:42:42,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-20 15:42:42,455 INFO L175 Difference]: Start difference. First operand has 281 places, 263 transitions, 3175 flow. Second operand 11 states and 144 transitions. [2024-06-20 15:42:42,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 290 transitions, 4045 flow [2024-06-20 15:42:42,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 290 transitions, 3869 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-20 15:42:42,889 INFO L231 Difference]: Finished difference. Result has 285 places, 267 transitions, 3279 flow [2024-06-20 15:42:42,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3003, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3279, PETRI_PLACES=285, PETRI_TRANSITIONS=267} [2024-06-20 15:42:42,889 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-20 15:42:42,890 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 267 transitions, 3279 flow [2024-06-20 15:42:42,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:42,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:42,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:42,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-20 15:42:42,890 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:42,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash 194778444, now seen corresponding path program 9 times [2024-06-20 15:42:42,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:42,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398698589] [2024-06-20 15:42:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:42,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:44,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:44,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398698589] [2024-06-20 15:42:44,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398698589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:44,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:44,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:44,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57792763] [2024-06-20 15:42:44,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:44,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:44,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:44,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:44,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:44,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:44,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 267 transitions, 3279 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:44,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:44,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:44,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:44,756 INFO L124 PetriNetUnfolderBase]: 731/1272 cut-off events. [2024-06-20 15:42:44,757 INFO L125 PetriNetUnfolderBase]: For 134885/134885 co-relation queries the response was YES. [2024-06-20 15:42:44,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9932 conditions, 1272 events. 731/1272 cut-off events. For 134885/134885 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6611 event pairs, 85 based on Foata normal form. 2/1272 useless extension candidates. Maximal degree in co-relation 9803. Up to 1063 conditions per place. [2024-06-20 15:42:44,769 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 217 selfloop transitions, 68 changer transitions 0/287 dead transitions. [2024-06-20 15:42:44,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 287 transitions, 3911 flow [2024-06-20 15:42:44,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:42:44,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:42:44,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 15:42:44,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 15:42:44,771 INFO L175 Difference]: Start difference. First operand has 285 places, 267 transitions, 3279 flow. Second operand 11 states and 135 transitions. [2024-06-20 15:42:44,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 287 transitions, 3911 flow [2024-06-20 15:42:45,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 287 transitions, 3615 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-20 15:42:45,151 INFO L231 Difference]: Finished difference. Result has 287 places, 268 transitions, 3135 flow [2024-06-20 15:42:45,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2983, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3135, PETRI_PLACES=287, PETRI_TRANSITIONS=268} [2024-06-20 15:42:45,152 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 257 predicate places. [2024-06-20 15:42:45,152 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 268 transitions, 3135 flow [2024-06-20 15:42:45,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:45,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:45,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:45,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-20 15:42:45,152 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:45,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:45,152 INFO L85 PathProgramCache]: Analyzing trace with hash 194922594, now seen corresponding path program 10 times [2024-06-20 15:42:45,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:45,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189734382] [2024-06-20 15:42:45,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:45,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:46,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:46,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189734382] [2024-06-20 15:42:46,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189734382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:46,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:46,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:42:46,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425963111] [2024-06-20 15:42:46,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:46,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:42:46,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:46,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:42:46,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:42:46,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:46,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 268 transitions, 3135 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:46,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:46,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:46,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:46,657 INFO L124 PetriNetUnfolderBase]: 728/1267 cut-off events. [2024-06-20 15:42:46,657 INFO L125 PetriNetUnfolderBase]: For 130053/130053 co-relation queries the response was YES. [2024-06-20 15:42:46,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9421 conditions, 1267 events. 728/1267 cut-off events. For 130053/130053 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6585 event pairs, 82 based on Foata normal form. 2/1267 useless extension candidates. Maximal degree in co-relation 9293. Up to 973 conditions per place. [2024-06-20 15:42:46,669 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 199 selfloop transitions, 85 changer transitions 0/286 dead transitions. [2024-06-20 15:42:46,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 286 transitions, 3753 flow [2024-06-20 15:42:46,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:46,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:46,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-20 15:42:46,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-20 15:42:46,671 INFO L175 Difference]: Start difference. First operand has 287 places, 268 transitions, 3135 flow. Second operand 10 states and 129 transitions. [2024-06-20 15:42:46,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 286 transitions, 3753 flow [2024-06-20 15:42:47,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 286 transitions, 3603 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-20 15:42:47,108 INFO L231 Difference]: Finished difference. Result has 287 places, 268 transitions, 3161 flow [2024-06-20 15:42:47,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2985, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3161, PETRI_PLACES=287, PETRI_TRANSITIONS=268} [2024-06-20 15:42:47,109 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 257 predicate places. [2024-06-20 15:42:47,109 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 268 transitions, 3161 flow [2024-06-20 15:42:47,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:47,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:47,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:47,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-20 15:42:47,109 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:47,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:47,109 INFO L85 PathProgramCache]: Analyzing trace with hash -832836597, now seen corresponding path program 7 times [2024-06-20 15:42:47,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:47,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102685362] [2024-06-20 15:42:47,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:47,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:48,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:48,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102685362] [2024-06-20 15:42:48,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102685362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:48,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:48,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:48,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885842918] [2024-06-20 15:42:48,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:48,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:48,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:48,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:48,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:48,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:48,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 268 transitions, 3161 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:48,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:48,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:48,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:49,341 INFO L124 PetriNetUnfolderBase]: 724/1261 cut-off events. [2024-06-20 15:42:49,341 INFO L125 PetriNetUnfolderBase]: For 125249/125249 co-relation queries the response was YES. [2024-06-20 15:42:49,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9266 conditions, 1261 events. 724/1261 cut-off events. For 125249/125249 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6549 event pairs, 48 based on Foata normal form. 2/1261 useless extension candidates. Maximal degree in co-relation 9138. Up to 872 conditions per place. [2024-06-20 15:42:49,353 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 190 selfloop transitions, 101 changer transitions 0/293 dead transitions. [2024-06-20 15:42:49,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 293 transitions, 3837 flow [2024-06-20 15:42:49,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:42:49,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:42:49,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-20 15:42:49,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-20 15:42:49,354 INFO L175 Difference]: Start difference. First operand has 287 places, 268 transitions, 3161 flow. Second operand 11 states and 145 transitions. [2024-06-20 15:42:49,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 293 transitions, 3837 flow [2024-06-20 15:42:49,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 293 transitions, 3643 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-20 15:42:49,760 INFO L231 Difference]: Finished difference. Result has 290 places, 270 transitions, 3265 flow [2024-06-20 15:42:49,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2967, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3265, PETRI_PLACES=290, PETRI_TRANSITIONS=270} [2024-06-20 15:42:49,761 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-20 15:42:49,761 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 270 transitions, 3265 flow [2024-06-20 15:42:49,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:49,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:49,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:49,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-20 15:42:49,762 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:49,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:49,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1740538949, now seen corresponding path program 2 times [2024-06-20 15:42:49,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:49,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262288254] [2024-06-20 15:42:49,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:49,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:51,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:51,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:51,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262288254] [2024-06-20 15:42:51,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262288254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:51,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:51,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:51,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415537468] [2024-06-20 15:42:51,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:51,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:51,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:51,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:51,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:51,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:51,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 270 transitions, 3265 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:51,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:51,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:51,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:51,552 INFO L124 PetriNetUnfolderBase]: 728/1269 cut-off events. [2024-06-20 15:42:51,553 INFO L125 PetriNetUnfolderBase]: For 125716/125716 co-relation queries the response was YES. [2024-06-20 15:42:51,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9497 conditions, 1269 events. 728/1269 cut-off events. For 125716/125716 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6610 event pairs, 80 based on Foata normal form. 2/1269 useless extension candidates. Maximal degree in co-relation 9367. Up to 1190 conditions per place. [2024-06-20 15:42:51,566 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 258 selfloop transitions, 28 changer transitions 0/288 dead transitions. [2024-06-20 15:42:51,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 288 transitions, 3903 flow [2024-06-20 15:42:51,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:51,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:51,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-20 15:42:51,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-20 15:42:51,567 INFO L175 Difference]: Start difference. First operand has 290 places, 270 transitions, 3265 flow. Second operand 10 states and 117 transitions. [2024-06-20 15:42:51,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 288 transitions, 3903 flow [2024-06-20 15:42:51,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 288 transitions, 3695 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-20 15:42:51,942 INFO L231 Difference]: Finished difference. Result has 291 places, 272 transitions, 3146 flow [2024-06-20 15:42:51,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3057, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3146, PETRI_PLACES=291, PETRI_TRANSITIONS=272} [2024-06-20 15:42:51,943 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2024-06-20 15:42:51,943 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 272 transitions, 3146 flow [2024-06-20 15:42:51,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:51,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:51,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:51,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-20 15:42:51,943 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:51,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:51,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1241704333, now seen corresponding path program 3 times [2024-06-20 15:42:51,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:51,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956946123] [2024-06-20 15:42:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:51,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:53,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:53,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956946123] [2024-06-20 15:42:53,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956946123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:53,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:53,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:53,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111755429] [2024-06-20 15:42:53,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:53,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:53,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:53,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:53,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:53,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:53,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 272 transitions, 3146 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:53,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:53,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:53,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:53,812 INFO L124 PetriNetUnfolderBase]: 732/1277 cut-off events. [2024-06-20 15:42:53,812 INFO L125 PetriNetUnfolderBase]: For 128276/128276 co-relation queries the response was YES. [2024-06-20 15:42:53,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9365 conditions, 1277 events. 732/1277 cut-off events. For 128276/128276 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6672 event pairs, 83 based on Foata normal form. 2/1277 useless extension candidates. Maximal degree in co-relation 9233. Up to 1207 conditions per place. [2024-06-20 15:42:53,824 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 263 selfloop transitions, 24 changer transitions 0/289 dead transitions. [2024-06-20 15:42:53,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 289 transitions, 3772 flow [2024-06-20 15:42:53,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:53,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:53,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-20 15:42:53,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-20 15:42:53,825 INFO L175 Difference]: Start difference. First operand has 291 places, 272 transitions, 3146 flow. Second operand 10 states and 115 transitions. [2024-06-20 15:42:53,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 289 transitions, 3772 flow [2024-06-20 15:42:54,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 289 transitions, 3715 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-20 15:42:54,217 INFO L231 Difference]: Finished difference. Result has 294 places, 273 transitions, 3153 flow [2024-06-20 15:42:54,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3089, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3153, PETRI_PLACES=294, PETRI_TRANSITIONS=273} [2024-06-20 15:42:54,218 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-06-20 15:42:54,218 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 273 transitions, 3153 flow [2024-06-20 15:42:54,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:54,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:54,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:54,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-20 15:42:54,218 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:54,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:54,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1234285723, now seen corresponding path program 4 times [2024-06-20 15:42:54,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:54,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542006552] [2024-06-20 15:42:54,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:54,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:55,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:55,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:55,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542006552] [2024-06-20 15:42:55,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542006552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:55,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:55,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:55,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757313891] [2024-06-20 15:42:55,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:55,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:55,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:55,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:55,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:55,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:55,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 273 transitions, 3153 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:55,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:55,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:55,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:56,120 INFO L124 PetriNetUnfolderBase]: 736/1285 cut-off events. [2024-06-20 15:42:56,121 INFO L125 PetriNetUnfolderBase]: For 131259/131259 co-relation queries the response was YES. [2024-06-20 15:42:56,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9426 conditions, 1285 events. 736/1285 cut-off events. For 131259/131259 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6741 event pairs, 83 based on Foata normal form. 2/1285 useless extension candidates. Maximal degree in co-relation 9293. Up to 1206 conditions per place. [2024-06-20 15:42:56,134 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 261 selfloop transitions, 28 changer transitions 0/291 dead transitions. [2024-06-20 15:42:56,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 291 transitions, 3791 flow [2024-06-20 15:42:56,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:42:56,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:42:56,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-20 15:42:56,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-20 15:42:56,135 INFO L175 Difference]: Start difference. First operand has 294 places, 273 transitions, 3153 flow. Second operand 10 states and 119 transitions. [2024-06-20 15:42:56,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 291 transitions, 3791 flow [2024-06-20 15:42:56,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 291 transitions, 3737 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-20 15:42:56,571 INFO L231 Difference]: Finished difference. Result has 296 places, 274 transitions, 3173 flow [2024-06-20 15:42:56,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3099, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3173, PETRI_PLACES=296, PETRI_TRANSITIONS=274} [2024-06-20 15:42:56,571 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-20 15:42:56,571 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 274 transitions, 3173 flow [2024-06-20 15:42:56,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:56,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:56,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:56,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-20 15:42:56,577 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:56,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:56,578 INFO L85 PathProgramCache]: Analyzing trace with hash 206518441, now seen corresponding path program 8 times [2024-06-20 15:42:56,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:56,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803036927] [2024-06-20 15:42:56,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:56,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:42:58,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:42:58,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:42:58,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803036927] [2024-06-20 15:42:58,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803036927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:42:58,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:42:58,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:42:58,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663170640] [2024-06-20 15:42:58,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:42:58,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:42:58,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:42:58,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:42:58,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:42:58,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:42:58,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 274 transitions, 3173 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:58,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:42:58,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:42:58,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:42:59,004 INFO L124 PetriNetUnfolderBase]: 742/1295 cut-off events. [2024-06-20 15:42:59,004 INFO L125 PetriNetUnfolderBase]: For 134366/134366 co-relation queries the response was YES. [2024-06-20 15:42:59,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9525 conditions, 1295 events. 742/1295 cut-off events. For 134366/134366 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6802 event pairs, 89 based on Foata normal form. 2/1295 useless extension candidates. Maximal degree in co-relation 9391. Up to 1189 conditions per place. [2024-06-20 15:42:59,017 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 259 selfloop transitions, 34 changer transitions 0/295 dead transitions. [2024-06-20 15:42:59,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 295 transitions, 3845 flow [2024-06-20 15:42:59,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:42:59,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:42:59,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 15:42:59,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 15:42:59,018 INFO L175 Difference]: Start difference. First operand has 296 places, 274 transitions, 3173 flow. Second operand 11 states and 132 transitions. [2024-06-20 15:42:59,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 295 transitions, 3845 flow [2024-06-20 15:42:59,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 295 transitions, 3781 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-20 15:42:59,438 INFO L231 Difference]: Finished difference. Result has 299 places, 276 transitions, 3216 flow [2024-06-20 15:42:59,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3109, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3216, PETRI_PLACES=299, PETRI_TRANSITIONS=276} [2024-06-20 15:42:59,439 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-20 15:42:59,439 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 276 transitions, 3216 flow [2024-06-20 15:42:59,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:42:59,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:42:59,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:42:59,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-20 15:42:59,439 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:42:59,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:42:59,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1040346313, now seen corresponding path program 5 times [2024-06-20 15:42:59,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:42:59,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72678826] [2024-06-20 15:42:59,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:42:59,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:42:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:01,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:01,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:01,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72678826] [2024-06-20 15:43:01,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72678826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:01,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:01,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:01,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681299549] [2024-06-20 15:43:01,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:01,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:01,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:01,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:01,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:01,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:01,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 276 transitions, 3216 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:01,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:01,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:01,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:02,050 INFO L124 PetriNetUnfolderBase]: 746/1303 cut-off events. [2024-06-20 15:43:02,050 INFO L125 PetriNetUnfolderBase]: For 137371/137371 co-relation queries the response was YES. [2024-06-20 15:43:02,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9611 conditions, 1303 events. 746/1303 cut-off events. For 137371/137371 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6862 event pairs, 78 based on Foata normal form. 2/1303 useless extension candidates. Maximal degree in co-relation 9476. Up to 1203 conditions per place. [2024-06-20 15:43:02,064 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 257 selfloop transitions, 35 changer transitions 0/294 dead transitions. [2024-06-20 15:43:02,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 294 transitions, 3862 flow [2024-06-20 15:43:02,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:02,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 15:43:02,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-20 15:43:02,065 INFO L175 Difference]: Start difference. First operand has 299 places, 276 transitions, 3216 flow. Second operand 10 states and 122 transitions. [2024-06-20 15:43:02,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 294 transitions, 3862 flow [2024-06-20 15:43:02,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 294 transitions, 3779 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-20 15:43:02,472 INFO L231 Difference]: Finished difference. Result has 300 places, 277 transitions, 3223 flow [2024-06-20 15:43:02,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3133, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3223, PETRI_PLACES=300, PETRI_TRANSITIONS=277} [2024-06-20 15:43:02,473 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-20 15:43:02,473 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 277 transitions, 3223 flow [2024-06-20 15:43:02,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:02,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:02,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:02,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-20 15:43:02,474 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:02,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:02,474 INFO L85 PathProgramCache]: Analyzing trace with hash 206310896, now seen corresponding path program 11 times [2024-06-20 15:43:02,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:02,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488048957] [2024-06-20 15:43:02,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:02,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:03,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:03,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:03,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488048957] [2024-06-20 15:43:03,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488048957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:03,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:03,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:03,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617358121] [2024-06-20 15:43:03,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:03,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:03,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:03,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:03,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:03,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:03,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 277 transitions, 3223 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:03,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:03,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:03,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:04,270 INFO L124 PetriNetUnfolderBase]: 770/1355 cut-off events. [2024-06-20 15:43:04,271 INFO L125 PetriNetUnfolderBase]: For 190674/190674 co-relation queries the response was YES. [2024-06-20 15:43:04,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9846 conditions, 1355 events. 770/1355 cut-off events. For 190674/190674 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7195 event pairs, 91 based on Foata normal form. 14/1367 useless extension candidates. Maximal degree in co-relation 9710. Up to 1208 conditions per place. [2024-06-20 15:43:04,285 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 261 selfloop transitions, 28 changer transitions 9/300 dead transitions. [2024-06-20 15:43:04,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 300 transitions, 3935 flow [2024-06-20 15:43:04,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:04,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-20 15:43:04,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-20 15:43:04,286 INFO L175 Difference]: Start difference. First operand has 300 places, 277 transitions, 3223 flow. Second operand 10 states and 126 transitions. [2024-06-20 15:43:04,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 300 transitions, 3935 flow [2024-06-20 15:43:04,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 300 transitions, 3855 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:04,770 INFO L231 Difference]: Finished difference. Result has 302 places, 275 transitions, 3165 flow [2024-06-20 15:43:04,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3143, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3165, PETRI_PLACES=302, PETRI_TRANSITIONS=275} [2024-06-20 15:43:04,771 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-20 15:43:04,771 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 275 transitions, 3165 flow [2024-06-20 15:43:04,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:04,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:04,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:04,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-20 15:43:04,771 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:04,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:04,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1538974748, now seen corresponding path program 12 times [2024-06-20 15:43:04,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:04,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531983234] [2024-06-20 15:43:04,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:04,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:06,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:06,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531983234] [2024-06-20 15:43:06,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531983234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:06,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:06,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:06,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62914162] [2024-06-20 15:43:06,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:06,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:06,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:06,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:06,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:06,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:06,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 275 transitions, 3165 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:06,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:06,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:06,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:06,568 INFO L124 PetriNetUnfolderBase]: 738/1295 cut-off events. [2024-06-20 15:43:06,569 INFO L125 PetriNetUnfolderBase]: For 143073/143073 co-relation queries the response was YES. [2024-06-20 15:43:06,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9533 conditions, 1295 events. 738/1295 cut-off events. For 143073/143073 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6833 event pairs, 95 based on Foata normal form. 2/1295 useless extension candidates. Maximal degree in co-relation 9396. Up to 1190 conditions per place. [2024-06-20 15:43:06,582 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 252 selfloop transitions, 38 changer transitions 0/292 dead transitions. [2024-06-20 15:43:06,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 292 transitions, 3805 flow [2024-06-20 15:43:06,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:06,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:06,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 15:43:06,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 15:43:06,583 INFO L175 Difference]: Start difference. First operand has 302 places, 275 transitions, 3165 flow. Second operand 10 states and 125 transitions. [2024-06-20 15:43:06,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 292 transitions, 3805 flow [2024-06-20 15:43:07,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 292 transitions, 3739 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:07,077 INFO L231 Difference]: Finished difference. Result has 304 places, 276 transitions, 3197 flow [2024-06-20 15:43:07,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3099, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3197, PETRI_PLACES=304, PETRI_TRANSITIONS=276} [2024-06-20 15:43:07,077 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2024-06-20 15:43:07,077 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 276 transitions, 3197 flow [2024-06-20 15:43:07,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:07,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:07,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:07,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-20 15:43:07,078 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:07,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:07,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1234075977, now seen corresponding path program 9 times [2024-06-20 15:43:07,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:07,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287207095] [2024-06-20 15:43:07,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:07,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:08,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:08,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287207095] [2024-06-20 15:43:08,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287207095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:08,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:08,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:08,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055538019] [2024-06-20 15:43:08,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:08,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:08,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:08,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:08,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:08,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:08,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 276 transitions, 3197 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:08,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:08,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:08,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:09,125 INFO L124 PetriNetUnfolderBase]: 734/1289 cut-off events. [2024-06-20 15:43:09,126 INFO L125 PetriNetUnfolderBase]: For 137039/137039 co-relation queries the response was YES. [2024-06-20 15:43:09,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9349 conditions, 1289 events. 734/1289 cut-off events. For 137039/137039 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6835 event pairs, 75 based on Foata normal form. 2/1289 useless extension candidates. Maximal degree in co-relation 9211. Up to 1165 conditions per place. [2024-06-20 15:43:09,138 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 253 selfloop transitions, 40 changer transitions 0/295 dead transitions. [2024-06-20 15:43:09,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 295 transitions, 3839 flow [2024-06-20 15:43:09,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:09,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:43:09,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 15:43:09,139 INFO L175 Difference]: Start difference. First operand has 304 places, 276 transitions, 3197 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:43:09,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 295 transitions, 3839 flow [2024-06-20 15:43:09,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 295 transitions, 3739 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:09,615 INFO L231 Difference]: Finished difference. Result has 307 places, 276 transitions, 3182 flow [2024-06-20 15:43:09,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3097, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3182, PETRI_PLACES=307, PETRI_TRANSITIONS=276} [2024-06-20 15:43:09,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-20 15:43:09,616 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 276 transitions, 3182 flow [2024-06-20 15:43:09,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:09,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:09,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:09,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-20 15:43:09,616 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:09,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:09,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1040136567, now seen corresponding path program 10 times [2024-06-20 15:43:09,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:09,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803870569] [2024-06-20 15:43:09,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:09,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:11,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:11,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803870569] [2024-06-20 15:43:11,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803870569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:11,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:11,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:11,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661713488] [2024-06-20 15:43:11,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:11,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:11,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:11,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:11,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:11,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:11,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 276 transitions, 3182 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:11,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:11,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:11,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:11,807 INFO L124 PetriNetUnfolderBase]: 740/1299 cut-off events. [2024-06-20 15:43:11,807 INFO L125 PetriNetUnfolderBase]: For 140183/140183 co-relation queries the response was YES. [2024-06-20 15:43:11,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9414 conditions, 1299 events. 740/1299 cut-off events. For 140183/140183 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6906 event pairs, 76 based on Foata normal form. 2/1299 useless extension candidates. Maximal degree in co-relation 9275. Up to 1160 conditions per place. [2024-06-20 15:43:11,820 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 252 selfloop transitions, 44 changer transitions 0/298 dead transitions. [2024-06-20 15:43:11,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 298 transitions, 3864 flow [2024-06-20 15:43:11,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:11,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:11,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 15:43:11,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-20 15:43:11,824 INFO L175 Difference]: Start difference. First operand has 307 places, 276 transitions, 3182 flow. Second operand 11 states and 137 transitions. [2024-06-20 15:43:11,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 298 transitions, 3864 flow [2024-06-20 15:43:12,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 298 transitions, 3766 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-20 15:43:12,345 INFO L231 Difference]: Finished difference. Result has 308 places, 278 transitions, 3211 flow [2024-06-20 15:43:12,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3084, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3211, PETRI_PLACES=308, PETRI_TRANSITIONS=278} [2024-06-20 15:43:12,345 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-20 15:43:12,345 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 278 transitions, 3211 flow [2024-06-20 15:43:12,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:12,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:12,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:12,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-20 15:43:12,346 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:12,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:12,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1040338377, now seen corresponding path program 11 times [2024-06-20 15:43:12,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:12,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922116942] [2024-06-20 15:43:12,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:12,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:13,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:13,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922116942] [2024-06-20 15:43:13,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922116942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:13,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:13,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:13,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575516868] [2024-06-20 15:43:13,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:13,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:13,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:13,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:13,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:13,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:13,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 278 transitions, 3211 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:13,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:13,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:13,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:14,417 INFO L124 PetriNetUnfolderBase]: 736/1293 cut-off events. [2024-06-20 15:43:14,418 INFO L125 PetriNetUnfolderBase]: For 133854/133854 co-relation queries the response was YES. [2024-06-20 15:43:14,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9221 conditions, 1293 events. 736/1293 cut-off events. For 133854/133854 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6864 event pairs, 91 based on Foata normal form. 2/1293 useless extension candidates. Maximal degree in co-relation 9081. Up to 1091 conditions per place. [2024-06-20 15:43:14,430 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 239 selfloop transitions, 55 changer transitions 0/296 dead transitions. [2024-06-20 15:43:14,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 296 transitions, 4043 flow [2024-06-20 15:43:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:14,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:14,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-20 15:43:14,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 15:43:14,431 INFO L175 Difference]: Start difference. First operand has 308 places, 278 transitions, 3211 flow. Second operand 10 states and 130 transitions. [2024-06-20 15:43:14,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 296 transitions, 4043 flow [2024-06-20 15:43:14,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 296 transitions, 3928 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:14,891 INFO L231 Difference]: Finished difference. Result has 310 places, 278 transitions, 3212 flow [2024-06-20 15:43:14,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3212, PETRI_PLACES=310, PETRI_TRANSITIONS=278} [2024-06-20 15:43:14,891 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-20 15:43:14,891 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 278 transitions, 3212 flow [2024-06-20 15:43:14,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:14,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:14,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:14,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-20 15:43:14,892 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:14,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:14,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1034774187, now seen corresponding path program 12 times [2024-06-20 15:43:14,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:14,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639469859] [2024-06-20 15:43:14,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:14,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:16,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:16,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:16,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639469859] [2024-06-20 15:43:16,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639469859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:16,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:16,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:16,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753850062] [2024-06-20 15:43:16,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:16,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:16,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:16,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:16,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:16,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:16,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 278 transitions, 3212 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:16,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:16,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:16,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:17,139 INFO L124 PetriNetUnfolderBase]: 742/1303 cut-off events. [2024-06-20 15:43:17,139 INFO L125 PetriNetUnfolderBase]: For 136738/136738 co-relation queries the response was YES. [2024-06-20 15:43:17,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9315 conditions, 1303 events. 742/1303 cut-off events. For 136738/136738 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6940 event pairs, 81 based on Foata normal form. 2/1303 useless extension candidates. Maximal degree in co-relation 9174. Up to 1164 conditions per place. [2024-06-20 15:43:17,153 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 251 selfloop transitions, 46 changer transitions 0/299 dead transitions. [2024-06-20 15:43:17,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 299 transitions, 3900 flow [2024-06-20 15:43:17,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:17,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:17,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:43:17,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 15:43:17,154 INFO L175 Difference]: Start difference. First operand has 310 places, 278 transitions, 3212 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:43:17,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 299 transitions, 3900 flow [2024-06-20 15:43:17,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 299 transitions, 3771 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-20 15:43:17,586 INFO L231 Difference]: Finished difference. Result has 312 places, 280 transitions, 3222 flow [2024-06-20 15:43:17,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3091, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3222, PETRI_PLACES=312, PETRI_TRANSITIONS=280} [2024-06-20 15:43:17,587 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-20 15:43:17,587 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 280 transitions, 3222 flow [2024-06-20 15:43:17,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:17,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:17,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:17,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-20 15:43:17,587 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:17,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:17,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1525735040, now seen corresponding path program 13 times [2024-06-20 15:43:17,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:17,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030983391] [2024-06-20 15:43:17,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:17,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:18,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:18,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030983391] [2024-06-20 15:43:18,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030983391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:18,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:18,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:18,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626466334] [2024-06-20 15:43:18,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:18,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:18,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:18,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:18,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:19,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:19,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 280 transitions, 3222 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:19,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:19,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:19,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:19,406 INFO L124 PetriNetUnfolderBase]: 746/1311 cut-off events. [2024-06-20 15:43:19,406 INFO L125 PetriNetUnfolderBase]: For 136695/136695 co-relation queries the response was YES. [2024-06-20 15:43:19,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9317 conditions, 1311 events. 746/1311 cut-off events. For 136695/136695 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6960 event pairs, 97 based on Foata normal form. 2/1311 useless extension candidates. Maximal degree in co-relation 9176. Up to 1206 conditions per place. [2024-06-20 15:43:19,420 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 256 selfloop transitions, 39 changer transitions 0/297 dead transitions. [2024-06-20 15:43:19,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 297 transitions, 3874 flow [2024-06-20 15:43:19,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:19,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:19,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 15:43:19,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 15:43:19,421 INFO L175 Difference]: Start difference. First operand has 312 places, 280 transitions, 3222 flow. Second operand 10 states and 123 transitions. [2024-06-20 15:43:19,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 297 transitions, 3874 flow [2024-06-20 15:43:19,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 297 transitions, 3769 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-20 15:43:19,869 INFO L231 Difference]: Finished difference. Result has 313 places, 281 transitions, 3219 flow [2024-06-20 15:43:19,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3117, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3219, PETRI_PLACES=313, PETRI_TRANSITIONS=281} [2024-06-20 15:43:19,870 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-20 15:43:19,870 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 281 transitions, 3219 flow [2024-06-20 15:43:19,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:19,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:19,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:19,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-20 15:43:19,870 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:19,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:19,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1034624457, now seen corresponding path program 13 times [2024-06-20 15:43:19,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:19,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733739222] [2024-06-20 15:43:19,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:19,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:21,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:21,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733739222] [2024-06-20 15:43:21,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733739222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:21,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:21,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:21,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369525157] [2024-06-20 15:43:21,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:21,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:21,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:21,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:21,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:21,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:21,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 281 transitions, 3219 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:21,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:21,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:21,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:21,754 INFO L124 PetriNetUnfolderBase]: 755/1326 cut-off events. [2024-06-20 15:43:21,754 INFO L125 PetriNetUnfolderBase]: For 139284/139284 co-relation queries the response was YES. [2024-06-20 15:43:21,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9404 conditions, 1326 events. 755/1326 cut-off events. For 139284/139284 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7076 event pairs, 71 based on Foata normal form. 2/1326 useless extension candidates. Maximal degree in co-relation 9262. Up to 1098 conditions per place. [2024-06-20 15:43:21,766 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 230 selfloop transitions, 73 changer transitions 0/305 dead transitions. [2024-06-20 15:43:21,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 305 transitions, 4137 flow [2024-06-20 15:43:21,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:21,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:21,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-20 15:43:21,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-20 15:43:21,767 INFO L175 Difference]: Start difference. First operand has 313 places, 281 transitions, 3219 flow. Second operand 11 states and 139 transitions. [2024-06-20 15:43:21,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 305 transitions, 4137 flow [2024-06-20 15:43:22,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 305 transitions, 4042 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:22,250 INFO L231 Difference]: Finished difference. Result has 317 places, 285 transitions, 3338 flow [2024-06-20 15:43:22,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3127, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3338, PETRI_PLACES=317, PETRI_TRANSITIONS=285} [2024-06-20 15:43:22,250 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-20 15:43:22,250 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 285 transitions, 3338 flow [2024-06-20 15:43:22,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:22,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:22,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:22,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-20 15:43:22,251 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:22,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:22,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1533612523, now seen corresponding path program 14 times [2024-06-20 15:43:22,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:22,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232708965] [2024-06-20 15:43:22,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:22,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:23,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:23,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232708965] [2024-06-20 15:43:23,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232708965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:23,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:23,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:23,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795729289] [2024-06-20 15:43:23,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:23,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:23,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:23,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:23,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:23,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:23,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 285 transitions, 3338 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:23,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:23,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:23,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:24,407 INFO L124 PetriNetUnfolderBase]: 751/1320 cut-off events. [2024-06-20 15:43:24,407 INFO L125 PetriNetUnfolderBase]: For 132456/132456 co-relation queries the response was YES. [2024-06-20 15:43:24,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9281 conditions, 1320 events. 751/1320 cut-off events. For 132456/132456 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7057 event pairs, 69 based on Foata normal form. 2/1320 useless extension candidates. Maximal degree in co-relation 9137. Up to 1163 conditions per place. [2024-06-20 15:43:24,421 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 251 selfloop transitions, 53 changer transitions 0/306 dead transitions. [2024-06-20 15:43:24,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 306 transitions, 4008 flow [2024-06-20 15:43:24,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:43:24,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:43:24,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-20 15:43:24,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-20 15:43:24,422 INFO L175 Difference]: Start difference. First operand has 317 places, 285 transitions, 3338 flow. Second operand 12 states and 146 transitions. [2024-06-20 15:43:24,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 306 transitions, 4008 flow [2024-06-20 15:43:24,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 306 transitions, 3843 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:24,938 INFO L231 Difference]: Finished difference. Result has 321 places, 285 transitions, 3284 flow [2024-06-20 15:43:24,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3173, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3284, PETRI_PLACES=321, PETRI_TRANSITIONS=285} [2024-06-20 15:43:24,939 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-20 15:43:24,939 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 285 transitions, 3284 flow [2024-06-20 15:43:24,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:24,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:24,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:24,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-20 15:43:24,939 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:24,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:24,940 INFO L85 PathProgramCache]: Analyzing trace with hash 6861236, now seen corresponding path program 14 times [2024-06-20 15:43:24,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:24,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788760979] [2024-06-20 15:43:24,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:24,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:25,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:25,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788760979] [2024-06-20 15:43:25,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788760979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:25,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:25,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 15:43:25,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499468270] [2024-06-20 15:43:25,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:25,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 15:43:25,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:25,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 15:43:25,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 15:43:26,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:26,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 285 transitions, 3284 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:26,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:26,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:26,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:26,478 INFO L124 PetriNetUnfolderBase]: 755/1328 cut-off events. [2024-06-20 15:43:26,478 INFO L125 PetriNetUnfolderBase]: For 134778/134778 co-relation queries the response was YES. [2024-06-20 15:43:26,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9269 conditions, 1328 events. 755/1328 cut-off events. For 134778/134778 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7102 event pairs, 86 based on Foata normal form. 2/1328 useless extension candidates. Maximal degree in co-relation 9125. Up to 1194 conditions per place. [2024-06-20 15:43:26,489 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 258 selfloop transitions, 43 changer transitions 0/303 dead transitions. [2024-06-20 15:43:26,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 303 transitions, 3952 flow [2024-06-20 15:43:26,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:26,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 15:43:26,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 15:43:26,490 INFO L175 Difference]: Start difference. First operand has 321 places, 285 transitions, 3284 flow. Second operand 10 states and 123 transitions. [2024-06-20 15:43:26,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 303 transitions, 3952 flow [2024-06-20 15:43:26,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 303 transitions, 3809 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 15:43:26,947 INFO L231 Difference]: Finished difference. Result has 319 places, 286 transitions, 3253 flow [2024-06-20 15:43:26,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3141, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3253, PETRI_PLACES=319, PETRI_TRANSITIONS=286} [2024-06-20 15:43:26,947 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-20 15:43:26,947 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 286 transitions, 3253 flow [2024-06-20 15:43:26,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:26,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:26,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:26,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-20 15:43:26,948 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:26,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:26,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1808083659, now seen corresponding path program 6 times [2024-06-20 15:43:26,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:26,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307728044] [2024-06-20 15:43:26,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:26,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:28,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:28,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307728044] [2024-06-20 15:43:28,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307728044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:28,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:28,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:28,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183932992] [2024-06-20 15:43:28,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:28,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:28,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:28,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:28,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:28,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:28,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 286 transitions, 3253 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:28,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:28,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:28,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:28,802 INFO L124 PetriNetUnfolderBase]: 759/1336 cut-off events. [2024-06-20 15:43:28,802 INFO L125 PetriNetUnfolderBase]: For 137289/137289 co-relation queries the response was YES. [2024-06-20 15:43:28,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9293 conditions, 1336 events. 759/1336 cut-off events. For 137289/137289 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7191 event pairs, 94 based on Foata normal form. 2/1336 useless extension candidates. Maximal degree in co-relation 9149. Up to 1290 conditions per place. [2024-06-20 15:43:28,816 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 280 selfloop transitions, 19 changer transitions 0/301 dead transitions. [2024-06-20 15:43:28,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 301 transitions, 3912 flow [2024-06-20 15:43:28,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:28,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:28,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-20 15:43:28,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 15:43:28,817 INFO L175 Difference]: Start difference. First operand has 319 places, 286 transitions, 3253 flow. Second operand 10 states and 110 transitions. [2024-06-20 15:43:28,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 301 transitions, 3912 flow [2024-06-20 15:43:29,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 301 transitions, 3810 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:29,255 INFO L231 Difference]: Finished difference. Result has 322 places, 288 transitions, 3227 flow [2024-06-20 15:43:29,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3151, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3227, PETRI_PLACES=322, PETRI_TRANSITIONS=288} [2024-06-20 15:43:29,255 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-20 15:43:29,255 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 288 transitions, 3227 flow [2024-06-20 15:43:29,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:29,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:29,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:29,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-20 15:43:29,256 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:29,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:29,256 INFO L85 PathProgramCache]: Analyzing trace with hash 542937145, now seen corresponding path program 7 times [2024-06-20 15:43:29,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:29,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702131660] [2024-06-20 15:43:29,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:29,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:30,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:30,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:30,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702131660] [2024-06-20 15:43:30,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702131660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:30,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:30,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:30,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924196993] [2024-06-20 15:43:30,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:30,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:30,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:30,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:30,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:31,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:31,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 288 transitions, 3227 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:31,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:31,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:31,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:31,530 INFO L124 PetriNetUnfolderBase]: 763/1344 cut-off events. [2024-06-20 15:43:31,530 INFO L125 PetriNetUnfolderBase]: For 139812/139812 co-relation queries the response was YES. [2024-06-20 15:43:31,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9294 conditions, 1344 events. 763/1344 cut-off events. For 139812/139812 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7236 event pairs, 90 based on Foata normal form. 2/1344 useless extension candidates. Maximal degree in co-relation 9148. Up to 1281 conditions per place. [2024-06-20 15:43:31,544 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 276 selfloop transitions, 24 changer transitions 0/302 dead transitions. [2024-06-20 15:43:31,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 302 transitions, 3879 flow [2024-06-20 15:43:31,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:31,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-20 15:43:31,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-20 15:43:31,545 INFO L175 Difference]: Start difference. First operand has 322 places, 288 transitions, 3227 flow. Second operand 10 states and 111 transitions. [2024-06-20 15:43:31,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 302 transitions, 3879 flow [2024-06-20 15:43:31,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 302 transitions, 3822 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-20 15:43:31,984 INFO L231 Difference]: Finished difference. Result has 326 places, 289 transitions, 3242 flow [2024-06-20 15:43:31,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3170, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3242, PETRI_PLACES=326, PETRI_TRANSITIONS=289} [2024-06-20 15:43:31,984 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2024-06-20 15:43:31,985 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 289 transitions, 3242 flow [2024-06-20 15:43:31,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:31,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:31,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:31,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-20 15:43:31,985 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:31,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:31,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1334856503, now seen corresponding path program 8 times [2024-06-20 15:43:31,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:31,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847364821] [2024-06-20 15:43:31,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:31,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:33,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:33,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847364821] [2024-06-20 15:43:33,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847364821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:33,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:33,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:33,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429352806] [2024-06-20 15:43:33,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:33,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:33,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:33,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:33,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:33,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:33,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 289 transitions, 3242 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:33,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:33,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:33,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:33,749 INFO L124 PetriNetUnfolderBase]: 767/1352 cut-off events. [2024-06-20 15:43:33,749 INFO L125 PetriNetUnfolderBase]: For 142563/142563 co-relation queries the response was YES. [2024-06-20 15:43:33,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9369 conditions, 1352 events. 767/1352 cut-off events. For 142563/142563 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7313 event pairs, 86 based on Foata normal form. 2/1352 useless extension candidates. Maximal degree in co-relation 9223. Up to 1265 conditions per place. [2024-06-20 15:43:33,763 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 270 selfloop transitions, 31 changer transitions 0/303 dead transitions. [2024-06-20 15:43:33,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 303 transitions, 3898 flow [2024-06-20 15:43:33,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:33,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:33,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-20 15:43:33,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-20 15:43:33,764 INFO L175 Difference]: Start difference. First operand has 326 places, 289 transitions, 3242 flow. Second operand 10 states and 113 transitions. [2024-06-20 15:43:33,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 303 transitions, 3898 flow [2024-06-20 15:43:34,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 303 transitions, 3810 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:34,164 INFO L231 Difference]: Finished difference. Result has 328 places, 290 transitions, 3242 flow [2024-06-20 15:43:34,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3154, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3242, PETRI_PLACES=328, PETRI_TRANSITIONS=290} [2024-06-20 15:43:34,165 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-20 15:43:34,165 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 290 transitions, 3242 flow [2024-06-20 15:43:34,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:34,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:34,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:34,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-20 15:43:34,165 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:34,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:34,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1335071984, now seen corresponding path program 15 times [2024-06-20 15:43:34,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:34,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241017936] [2024-06-20 15:43:34,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:34,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:35,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:35,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241017936] [2024-06-20 15:43:35,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241017936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:35,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:35,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:35,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692031138] [2024-06-20 15:43:35,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:35,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:35,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:35,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:35,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:35,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:35,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 290 transitions, 3242 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:35,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:35,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:35,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:36,008 INFO L124 PetriNetUnfolderBase]: 771/1360 cut-off events. [2024-06-20 15:43:36,009 INFO L125 PetriNetUnfolderBase]: For 145156/145156 co-relation queries the response was YES. [2024-06-20 15:43:36,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9429 conditions, 1360 events. 771/1360 cut-off events. For 145156/145156 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7399 event pairs, 90 based on Foata normal form. 2/1360 useless extension candidates. Maximal degree in co-relation 9282. Up to 1257 conditions per place. [2024-06-20 15:43:36,023 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 37 changer transitions 0/305 dead transitions. [2024-06-20 15:43:36,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 305 transitions, 3924 flow [2024-06-20 15:43:36,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:36,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-20 15:43:36,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-20 15:43:36,024 INFO L175 Difference]: Start difference. First operand has 328 places, 290 transitions, 3242 flow. Second operand 11 states and 123 transitions. [2024-06-20 15:43:36,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 305 transitions, 3924 flow [2024-06-20 15:43:36,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 305 transitions, 3846 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:36,414 INFO L231 Difference]: Finished difference. Result has 331 places, 292 transitions, 3288 flow [2024-06-20 15:43:36,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3164, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3288, PETRI_PLACES=331, PETRI_TRANSITIONS=292} [2024-06-20 15:43:36,414 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-20 15:43:36,415 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 292 transitions, 3288 flow [2024-06-20 15:43:36,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:36,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:36,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:36,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-20 15:43:36,415 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:36,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:36,415 INFO L85 PathProgramCache]: Analyzing trace with hash 542929209, now seen corresponding path program 15 times [2024-06-20 15:43:36,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:36,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401045330] [2024-06-20 15:43:36,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:36,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:38,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:38,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401045330] [2024-06-20 15:43:38,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401045330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:38,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:38,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:38,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054445555] [2024-06-20 15:43:38,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:38,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:38,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:38,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:38,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:38,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:38,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 292 transitions, 3288 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:38,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:38,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:38,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:38,794 INFO L124 PetriNetUnfolderBase]: 777/1370 cut-off events. [2024-06-20 15:43:38,794 INFO L125 PetriNetUnfolderBase]: For 147697/147697 co-relation queries the response was YES. [2024-06-20 15:43:38,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9498 conditions, 1370 events. 777/1370 cut-off events. For 147697/147697 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7462 event pairs, 85 based on Foata normal form. 2/1370 useless extension candidates. Maximal degree in co-relation 9350. Up to 1236 conditions per place. [2024-06-20 15:43:38,808 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 270 selfloop transitions, 38 changer transitions 0/310 dead transitions. [2024-06-20 15:43:38,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 310 transitions, 4190 flow [2024-06-20 15:43:38,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:38,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-20 15:43:38,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-20 15:43:38,809 INFO L175 Difference]: Start difference. First operand has 331 places, 292 transitions, 3288 flow. Second operand 11 states and 127 transitions. [2024-06-20 15:43:38,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 310 transitions, 4190 flow [2024-06-20 15:43:39,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 310 transitions, 4011 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-20 15:43:39,244 INFO L231 Difference]: Finished difference. Result has 331 places, 294 transitions, 3222 flow [2024-06-20 15:43:39,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3109, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3222, PETRI_PLACES=331, PETRI_TRANSITIONS=294} [2024-06-20 15:43:39,245 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-20 15:43:39,245 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 294 transitions, 3222 flow [2024-06-20 15:43:39,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:39,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:39,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:39,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-20 15:43:39,245 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:39,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:39,245 INFO L85 PathProgramCache]: Analyzing trace with hash 542721664, now seen corresponding path program 16 times [2024-06-20 15:43:39,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:39,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693741519] [2024-06-20 15:43:39,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:39,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:40,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:40,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:40,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693741519] [2024-06-20 15:43:40,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693741519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:40,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:40,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:40,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747199887] [2024-06-20 15:43:40,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:40,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:40,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:40,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:40,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:40,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:40,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 294 transitions, 3222 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:40,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:40,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:40,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:40,894 INFO L124 PetriNetUnfolderBase]: 801/1422 cut-off events. [2024-06-20 15:43:40,894 INFO L125 PetriNetUnfolderBase]: For 217222/217222 co-relation queries the response was YES. [2024-06-20 15:43:40,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9622 conditions, 1422 events. 801/1422 cut-off events. For 217222/217222 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7805 event pairs, 102 based on Foata normal form. 14/1434 useless extension candidates. Maximal degree in co-relation 9476. Up to 1308 conditions per place. [2024-06-20 15:43:40,910 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 283 selfloop transitions, 20 changer transitions 10/315 dead transitions. [2024-06-20 15:43:40,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 315 transitions, 3966 flow [2024-06-20 15:43:40,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:40,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:40,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-20 15:43:40,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-20 15:43:40,912 INFO L175 Difference]: Start difference. First operand has 331 places, 294 transitions, 3222 flow. Second operand 11 states and 127 transitions. [2024-06-20 15:43:40,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 315 transitions, 3966 flow [2024-06-20 15:43:41,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 315 transitions, 3804 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-20 15:43:41,472 INFO L231 Difference]: Finished difference. Result has 333 places, 292 transitions, 3086 flow [2024-06-20 15:43:41,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3060, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3086, PETRI_PLACES=333, PETRI_TRANSITIONS=292} [2024-06-20 15:43:41,472 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2024-06-20 15:43:41,472 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 292 transitions, 3086 flow [2024-06-20 15:43:41,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:41,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:41,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:41,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-20 15:43:41,473 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:41,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:41,473 INFO L85 PathProgramCache]: Analyzing trace with hash 352805253, now seen corresponding path program 16 times [2024-06-20 15:43:41,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:41,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526163276] [2024-06-20 15:43:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:41,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:43,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:43,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:43,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526163276] [2024-06-20 15:43:43,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526163276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:43,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:43,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:43,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631705112] [2024-06-20 15:43:43,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:43,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:43,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:43,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:43,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:43,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:43,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 292 transitions, 3086 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:43,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:43,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:43,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:44,262 INFO L124 PetriNetUnfolderBase]: 761/1348 cut-off events. [2024-06-20 15:43:44,262 INFO L125 PetriNetUnfolderBase]: For 140706/140706 co-relation queries the response was YES. [2024-06-20 15:43:44,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8975 conditions, 1348 events. 761/1348 cut-off events. For 140706/140706 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7372 event pairs, 85 based on Foata normal form. 2/1348 useless extension candidates. Maximal degree in co-relation 8828. Up to 1258 conditions per place. [2024-06-20 15:43:44,276 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 274 selfloop transitions, 31 changer transitions 0/307 dead transitions. [2024-06-20 15:43:44,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 307 transitions, 3738 flow [2024-06-20 15:43:44,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:44,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:44,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-20 15:43:44,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-20 15:43:44,278 INFO L175 Difference]: Start difference. First operand has 333 places, 292 transitions, 3086 flow. Second operand 11 states and 123 transitions. [2024-06-20 15:43:44,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 307 transitions, 3738 flow [2024-06-20 15:43:44,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 307 transitions, 3666 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-20 15:43:44,760 INFO L231 Difference]: Finished difference. Result has 335 places, 292 transitions, 3081 flow [2024-06-20 15:43:44,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3014, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3081, PETRI_PLACES=335, PETRI_TRANSITIONS=292} [2024-06-20 15:43:44,760 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-20 15:43:44,760 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 292 transitions, 3081 flow [2024-06-20 15:43:44,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:44,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:44,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:44,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-20 15:43:44,761 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:44,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:44,761 INFO L85 PathProgramCache]: Analyzing trace with hash 550355755, now seen corresponding path program 9 times [2024-06-20 15:43:44,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:44,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818917635] [2024-06-20 15:43:44,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:44,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:46,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:46,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:46,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818917635] [2024-06-20 15:43:46,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818917635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:46,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:46,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:46,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792615527] [2024-06-20 15:43:46,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:46,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:46,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:46,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:46,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:46,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:46,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 292 transitions, 3081 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:46,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:46,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:46,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:46,557 INFO L124 PetriNetUnfolderBase]: 765/1356 cut-off events. [2024-06-20 15:43:46,557 INFO L125 PetriNetUnfolderBase]: For 143483/143483 co-relation queries the response was YES. [2024-06-20 15:43:46,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9034 conditions, 1356 events. 765/1356 cut-off events. For 143483/143483 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7415 event pairs, 93 based on Foata normal form. 2/1356 useless extension candidates. Maximal degree in co-relation 8886. Up to 1310 conditions per place. [2024-06-20 15:43:46,603 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 286 selfloop transitions, 18 changer transitions 0/306 dead transitions. [2024-06-20 15:43:46,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 306 transitions, 3743 flow [2024-06-20 15:43:46,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:46,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:46,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-20 15:43:46,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-20 15:43:46,604 INFO L175 Difference]: Start difference. First operand has 335 places, 292 transitions, 3081 flow. Second operand 10 states and 109 transitions. [2024-06-20 15:43:46,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 306 transitions, 3743 flow [2024-06-20 15:43:47,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 306 transitions, 3606 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-20 15:43:47,131 INFO L231 Difference]: Finished difference. Result has 335 places, 293 transitions, 3008 flow [2024-06-20 15:43:47,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2944, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3008, PETRI_PLACES=335, PETRI_TRANSITIONS=293} [2024-06-20 15:43:47,132 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-20 15:43:47,132 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 293 transitions, 3008 flow [2024-06-20 15:43:47,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:47,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:47,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:47,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-20 15:43:47,132 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:47,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:47,133 INFO L85 PathProgramCache]: Analyzing trace with hash 798248363, now seen corresponding path program 10 times [2024-06-20 15:43:47,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:47,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300518484] [2024-06-20 15:43:47,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:47,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:48,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:48,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:48,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300518484] [2024-06-20 15:43:48,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300518484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:48,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:48,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:48,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449486911] [2024-06-20 15:43:48,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:48,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:48,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:48,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:48,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:48,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:48,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 293 transitions, 3008 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:48,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:48,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:48,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:48,992 INFO L124 PetriNetUnfolderBase]: 769/1364 cut-off events. [2024-06-20 15:43:48,992 INFO L125 PetriNetUnfolderBase]: For 145829/145829 co-relation queries the response was YES. [2024-06-20 15:43:49,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9042 conditions, 1364 events. 769/1364 cut-off events. For 145829/145829 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7487 event pairs, 95 based on Foata normal form. 2/1364 useless extension candidates. Maximal degree in co-relation 8893. Up to 1316 conditions per place. [2024-06-20 15:43:49,006 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 283 selfloop transitions, 21 changer transitions 0/306 dead transitions. [2024-06-20 15:43:49,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 306 transitions, 3670 flow [2024-06-20 15:43:49,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:49,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-20 15:43:49,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-20 15:43:49,007 INFO L175 Difference]: Start difference. First operand has 335 places, 293 transitions, 3008 flow. Second operand 10 states and 108 transitions. [2024-06-20 15:43:49,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 306 transitions, 3670 flow [2024-06-20 15:43:49,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 306 transitions, 3616 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:49,570 INFO L231 Difference]: Finished difference. Result has 337 places, 294 transitions, 3027 flow [2024-06-20 15:43:49,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2954, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3027, PETRI_PLACES=337, PETRI_TRANSITIONS=294} [2024-06-20 15:43:49,570 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2024-06-20 15:43:49,570 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 294 transitions, 3027 flow [2024-06-20 15:43:49,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:49,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:49,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:49,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-20 15:43:49,571 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:49,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:49,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1340434364, now seen corresponding path program 17 times [2024-06-20 15:43:49,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:49,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802651144] [2024-06-20 15:43:49,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:49,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:50,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:50,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802651144] [2024-06-20 15:43:50,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802651144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:50,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:50,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:50,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171701779] [2024-06-20 15:43:50,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:50,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:50,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:50,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:50,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:50,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:50,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 294 transitions, 3027 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:50,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:50,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:50,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:51,394 INFO L124 PetriNetUnfolderBase]: 776/1377 cut-off events. [2024-06-20 15:43:51,394 INFO L125 PetriNetUnfolderBase]: For 148584/148584 co-relation queries the response was YES. [2024-06-20 15:43:51,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9137 conditions, 1377 events. 776/1377 cut-off events. For 148584/148584 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7580 event pairs, 91 based on Foata normal form. 2/1377 useless extension candidates. Maximal degree in co-relation 8987. Up to 1282 conditions per place. [2024-06-20 15:43:51,408 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 271 selfloop transitions, 38 changer transitions 0/311 dead transitions. [2024-06-20 15:43:51,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 311 transitions, 3729 flow [2024-06-20 15:43:51,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:43:51,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:43:51,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-20 15:43:51,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-20 15:43:51,409 INFO L175 Difference]: Start difference. First operand has 337 places, 294 transitions, 3027 flow. Second operand 11 states and 124 transitions. [2024-06-20 15:43:51,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 311 transitions, 3729 flow [2024-06-20 15:43:51,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 311 transitions, 3668 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:51,970 INFO L231 Difference]: Finished difference. Result has 341 places, 297 transitions, 3103 flow [2024-06-20 15:43:51,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2966, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3103, PETRI_PLACES=341, PETRI_TRANSITIONS=297} [2024-06-20 15:43:51,971 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-20 15:43:51,971 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 297 transitions, 3103 flow [2024-06-20 15:43:51,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:51,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:51,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:51,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-20 15:43:51,971 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:51,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1340428629, now seen corresponding path program 17 times [2024-06-20 15:43:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:51,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954968719] [2024-06-20 15:43:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:51,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:53,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:53,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954968719] [2024-06-20 15:43:53,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954968719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:53,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:53,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:53,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527308693] [2024-06-20 15:43:53,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:53,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:53,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:53,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:53,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:53,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:53,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 297 transitions, 3103 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:53,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:53,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:53,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:54,135 INFO L124 PetriNetUnfolderBase]: 772/1371 cut-off events. [2024-06-20 15:43:54,136 INFO L125 PetriNetUnfolderBase]: For 138640/138640 co-relation queries the response was YES. [2024-06-20 15:43:54,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8927 conditions, 1371 events. 772/1371 cut-off events. For 138640/138640 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7558 event pairs, 84 based on Foata normal form. 2/1371 useless extension candidates. Maximal degree in co-relation 8775. Up to 1113 conditions per place. [2024-06-20 15:43:54,151 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 244 selfloop transitions, 65 changer transitions 0/311 dead transitions. [2024-06-20 15:43:54,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 311 transitions, 3981 flow [2024-06-20 15:43:54,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:54,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-20 15:43:54,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 15:43:54,152 INFO L175 Difference]: Start difference. First operand has 341 places, 297 transitions, 3103 flow. Second operand 10 states and 120 transitions. [2024-06-20 15:43:54,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 311 transitions, 3981 flow [2024-06-20 15:43:54,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 311 transitions, 3882 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-20 15:43:54,618 INFO L231 Difference]: Finished difference. Result has 344 places, 297 transitions, 3144 flow [2024-06-20 15:43:54,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3004, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3144, PETRI_PLACES=344, PETRI_TRANSITIONS=297} [2024-06-20 15:43:54,618 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 314 predicate places. [2024-06-20 15:43:54,619 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 297 transitions, 3144 flow [2024-06-20 15:43:54,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:54,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:54,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:54,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-20 15:43:54,619 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:54,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:54,619 INFO L85 PathProgramCache]: Analyzing trace with hash -981716275, now seen corresponding path program 11 times [2024-06-20 15:43:54,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:54,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415440038] [2024-06-20 15:43:54,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:54,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:55,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:55,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:55,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415440038] [2024-06-20 15:43:55,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415440038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:55,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:55,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:55,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785105726] [2024-06-20 15:43:55,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:55,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:55,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:55,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:55,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:55,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:55,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 297 transitions, 3144 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:55,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:55,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:55,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:56,386 INFO L124 PetriNetUnfolderBase]: 776/1379 cut-off events. [2024-06-20 15:43:56,386 INFO L125 PetriNetUnfolderBase]: For 141364/141364 co-relation queries the response was YES. [2024-06-20 15:43:56,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9054 conditions, 1379 events. 776/1379 cut-off events. For 141364/141364 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7618 event pairs, 98 based on Foata normal form. 2/1379 useless extension candidates. Maximal degree in co-relation 8901. Up to 1334 conditions per place. [2024-06-20 15:43:56,399 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 290 selfloop transitions, 18 changer transitions 0/310 dead transitions. [2024-06-20 15:43:56,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 310 transitions, 3814 flow [2024-06-20 15:43:56,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:56,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-20 15:43:56,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-20 15:43:56,400 INFO L175 Difference]: Start difference. First operand has 344 places, 297 transitions, 3144 flow. Second operand 10 states and 107 transitions. [2024-06-20 15:43:56,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 310 transitions, 3814 flow [2024-06-20 15:43:56,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 310 transitions, 3679 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-20 15:43:56,896 INFO L231 Difference]: Finished difference. Result has 345 places, 298 transitions, 3077 flow [2024-06-20 15:43:56,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3009, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3077, PETRI_PLACES=345, PETRI_TRANSITIONS=298} [2024-06-20 15:43:56,896 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 315 predicate places. [2024-06-20 15:43:56,896 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 298 transitions, 3077 flow [2024-06-20 15:43:56,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:56,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:56,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:56,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-20 15:43:56,897 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:56,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:56,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1123258253, now seen corresponding path program 12 times [2024-06-20 15:43:56,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:56,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828748507] [2024-06-20 15:43:56,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:56,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:43:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:43:57,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:43:57,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828748507] [2024-06-20 15:43:57,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828748507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:43:57,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:43:57,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:43:57,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935987084] [2024-06-20 15:43:57,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:43:57,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:43:57,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:43:57,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:43:57,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:43:58,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:43:58,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 298 transitions, 3077 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:58,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:43:58,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:43:58,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:43:58,479 INFO L124 PetriNetUnfolderBase]: 780/1387 cut-off events. [2024-06-20 15:43:58,479 INFO L125 PetriNetUnfolderBase]: For 141471/141471 co-relation queries the response was YES. [2024-06-20 15:43:58,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8990 conditions, 1387 events. 780/1387 cut-off events. For 141471/141471 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7670 event pairs, 98 based on Foata normal form. 2/1387 useless extension candidates. Maximal degree in co-relation 8837. Up to 1345 conditions per place. [2024-06-20 15:43:58,493 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 294 selfloop transitions, 15 changer transitions 0/311 dead transitions. [2024-06-20 15:43:58,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 311 transitions, 3749 flow [2024-06-20 15:43:58,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:43:58,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:43:58,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-20 15:43:58,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-20 15:43:58,494 INFO L175 Difference]: Start difference. First operand has 345 places, 298 transitions, 3077 flow. Second operand 10 states and 105 transitions. [2024-06-20 15:43:58,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 311 transitions, 3749 flow [2024-06-20 15:43:59,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 311 transitions, 3691 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-20 15:43:59,073 INFO L231 Difference]: Finished difference. Result has 347 places, 299 transitions, 3083 flow [2024-06-20 15:43:59,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3019, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3083, PETRI_PLACES=347, PETRI_TRANSITIONS=299} [2024-06-20 15:43:59,074 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2024-06-20 15:43:59,074 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 299 transitions, 3083 flow [2024-06-20 15:43:59,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:43:59,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:43:59,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:43:59,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-20 15:43:59,074 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:43:59,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:43:59,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1340578514, now seen corresponding path program 18 times [2024-06-20 15:43:59,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:43:59,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836515527] [2024-06-20 15:43:59,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:43:59,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:43:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:00,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:00,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836515527] [2024-06-20 15:44:00,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836515527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:00,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:00,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:00,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811925205] [2024-06-20 15:44:00,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:00,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:00,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:00,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:00,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:00,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:00,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 299 transitions, 3083 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:00,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:00,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:00,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:00,998 INFO L124 PetriNetUnfolderBase]: 784/1395 cut-off events. [2024-06-20 15:44:00,998 INFO L125 PetriNetUnfolderBase]: For 144021/144021 co-relation queries the response was YES. [2024-06-20 15:44:01,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9039 conditions, 1395 events. 784/1395 cut-off events. For 144021/144021 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 7733 event pairs, 96 based on Foata normal form. 2/1395 useless extension candidates. Maximal degree in co-relation 8885. Up to 1271 conditions per place. [2024-06-20 15:44:01,014 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 264 selfloop transitions, 50 changer transitions 0/316 dead transitions. [2024-06-20 15:44:01,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 316 transitions, 3781 flow [2024-06-20 15:44:01,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:44:01,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:44:01,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-20 15:44:01,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-20 15:44:01,015 INFO L175 Difference]: Start difference. First operand has 347 places, 299 transitions, 3083 flow. Second operand 12 states and 136 transitions. [2024-06-20 15:44:01,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 316 transitions, 3781 flow [2024-06-20 15:44:01,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 316 transitions, 3727 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-20 15:44:01,543 INFO L231 Difference]: Finished difference. Result has 351 places, 300 transitions, 3165 flow [2024-06-20 15:44:01,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3165, PETRI_PLACES=351, PETRI_TRANSITIONS=300} [2024-06-20 15:44:01,543 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 321 predicate places. [2024-06-20 15:44:01,543 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 300 transitions, 3165 flow [2024-06-20 15:44:01,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:01,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:01,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:01,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-20 15:44:01,544 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:01,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:01,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1340582234, now seen corresponding path program 19 times [2024-06-20 15:44:01,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:01,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37325641] [2024-06-20 15:44:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:01,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:02,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:02,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37325641] [2024-06-20 15:44:02,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37325641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:02,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:02,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:02,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939097684] [2024-06-20 15:44:02,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:02,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:02,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:02,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:02,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:02,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:02,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 300 transitions, 3165 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:02,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:02,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:02,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:03,401 INFO L124 PetriNetUnfolderBase]: 824/1475 cut-off events. [2024-06-20 15:44:03,401 INFO L125 PetriNetUnfolderBase]: For 224388/224388 co-relation queries the response was YES. [2024-06-20 15:44:03,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10826 conditions, 1475 events. 824/1475 cut-off events. For 224388/224388 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8171 event pairs, 108 based on Foata normal form. 2/1475 useless extension candidates. Maximal degree in co-relation 10671. Up to 1236 conditions per place. [2024-06-20 15:44:03,414 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 268 selfloop transitions, 53 changer transitions 0/323 dead transitions. [2024-06-20 15:44:03,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 323 transitions, 4163 flow [2024-06-20 15:44:03,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:03,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:03,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:44:03,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 15:44:03,415 INFO L175 Difference]: Start difference. First operand has 351 places, 300 transitions, 3165 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:44:03,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 323 transitions, 4163 flow [2024-06-20 15:44:04,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 323 transitions, 4041 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-20 15:44:04,104 INFO L231 Difference]: Finished difference. Result has 353 places, 301 transitions, 3185 flow [2024-06-20 15:44:04,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3185, PETRI_PLACES=353, PETRI_TRANSITIONS=301} [2024-06-20 15:44:04,105 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 323 predicate places. [2024-06-20 15:44:04,105 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 301 transitions, 3185 flow [2024-06-20 15:44:04,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:04,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:04,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:04,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-20 15:44:04,105 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:04,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:04,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1335066249, now seen corresponding path program 18 times [2024-06-20 15:44:04,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:04,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672550613] [2024-06-20 15:44:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:04,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:05,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:05,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:05,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672550613] [2024-06-20 15:44:05,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672550613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:05,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:05,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:05,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708705194] [2024-06-20 15:44:05,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:05,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:05,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:05,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:05,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:05,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:05,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 301 transitions, 3185 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:05,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:05,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:05,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:06,417 INFO L124 PetriNetUnfolderBase]: 830/1485 cut-off events. [2024-06-20 15:44:06,417 INFO L125 PetriNetUnfolderBase]: For 224287/224287 co-relation queries the response was YES. [2024-06-20 15:44:06,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10861 conditions, 1485 events. 830/1485 cut-off events. For 224287/224287 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8248 event pairs, 111 based on Foata normal form. 2/1485 useless extension candidates. Maximal degree in co-relation 10705. Up to 1223 conditions per place. [2024-06-20 15:44:06,434 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 255 selfloop transitions, 62 changer transitions 0/319 dead transitions. [2024-06-20 15:44:06,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 319 transitions, 4349 flow [2024-06-20 15:44:06,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:44:06,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:44:06,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 15:44:06,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 15:44:06,436 INFO L175 Difference]: Start difference. First operand has 353 places, 301 transitions, 3185 flow. Second operand 10 states and 125 transitions. [2024-06-20 15:44:06,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 319 transitions, 4349 flow [2024-06-20 15:44:07,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 319 transitions, 4171 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-20 15:44:07,139 INFO L231 Difference]: Finished difference. Result has 353 places, 303 transitions, 3170 flow [2024-06-20 15:44:07,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3007, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3170, PETRI_PLACES=353, PETRI_TRANSITIONS=303} [2024-06-20 15:44:07,140 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 323 predicate places. [2024-06-20 15:44:07,140 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 303 transitions, 3170 flow [2024-06-20 15:44:07,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:07,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:07,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:07,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-20 15:44:07,140 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:07,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:07,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1334864439, now seen corresponding path program 19 times [2024-06-20 15:44:07,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:07,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266767323] [2024-06-20 15:44:07,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:07,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:08,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:08,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266767323] [2024-06-20 15:44:08,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266767323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:08,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:08,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:08,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818489110] [2024-06-20 15:44:08,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:08,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:08,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:08,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:08,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:08,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:08,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 303 transitions, 3170 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:08,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:08,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:08,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:09,378 INFO L124 PetriNetUnfolderBase]: 826/1479 cut-off events. [2024-06-20 15:44:09,378 INFO L125 PetriNetUnfolderBase]: For 214743/214743 co-relation queries the response was YES. [2024-06-20 15:44:09,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10484 conditions, 1479 events. 826/1479 cut-off events. For 214743/214743 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8205 event pairs, 107 based on Foata normal form. 2/1479 useless extension candidates. Maximal degree in co-relation 10329. Up to 1220 conditions per place. [2024-06-20 15:44:09,395 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 250 selfloop transitions, 68 changer transitions 0/320 dead transitions. [2024-06-20 15:44:09,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 320 transitions, 4084 flow [2024-06-20 15:44:09,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:09,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 15:44:09,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-20 15:44:09,396 INFO L175 Difference]: Start difference. First operand has 353 places, 303 transitions, 3170 flow. Second operand 11 states and 133 transitions. [2024-06-20 15:44:09,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 320 transitions, 4084 flow [2024-06-20 15:44:10,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 320 transitions, 3937 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-20 15:44:10,041 INFO L231 Difference]: Finished difference. Result has 356 places, 303 transitions, 3166 flow [2024-06-20 15:44:10,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3025, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3166, PETRI_PLACES=356, PETRI_TRANSITIONS=303} [2024-06-20 15:44:10,042 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-20 15:44:10,042 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 303 transitions, 3166 flow [2024-06-20 15:44:10,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:10,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:10,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:10,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-20 15:44:10,042 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:10,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:10,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1140917093, now seen corresponding path program 13 times [2024-06-20 15:44:10,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:10,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701950263] [2024-06-20 15:44:10,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:10,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:11,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:11,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:11,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701950263] [2024-06-20 15:44:11,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701950263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:11,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:11,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:11,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414448001] [2024-06-20 15:44:11,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:11,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:11,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:11,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:11,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:11,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:11,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 303 transitions, 3166 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:11,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:11,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:11,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:12,010 INFO L124 PetriNetUnfolderBase]: 830/1487 cut-off events. [2024-06-20 15:44:12,010 INFO L125 PetriNetUnfolderBase]: For 215157/215157 co-relation queries the response was YES. [2024-06-20 15:44:12,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10536 conditions, 1487 events. 830/1487 cut-off events. For 215157/215157 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8305 event pairs, 117 based on Foata normal form. 2/1487 useless extension candidates. Maximal degree in co-relation 10381. Up to 1429 conditions per place. [2024-06-20 15:44:12,027 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 294 selfloop transitions, 22 changer transitions 0/318 dead transitions. [2024-06-20 15:44:12,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 318 transitions, 3866 flow [2024-06-20 15:44:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:44:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:44:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-20 15:44:12,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-20 15:44:12,027 INFO L175 Difference]: Start difference. First operand has 356 places, 303 transitions, 3166 flow. Second operand 10 states and 114 transitions. [2024-06-20 15:44:12,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 318 transitions, 3866 flow [2024-06-20 15:44:12,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 318 transitions, 3716 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-20 15:44:12,772 INFO L231 Difference]: Finished difference. Result has 356 places, 304 transitions, 3096 flow [2024-06-20 15:44:12,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3016, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3096, PETRI_PLACES=356, PETRI_TRANSITIONS=304} [2024-06-20 15:44:12,773 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-20 15:44:12,773 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 304 transitions, 3096 flow [2024-06-20 15:44:12,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:12,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:12,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:12,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-20 15:44:12,773 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:12,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:12,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1133507783, now seen corresponding path program 14 times [2024-06-20 15:44:12,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:12,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916497612] [2024-06-20 15:44:12,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:12,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:13,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:13,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916497612] [2024-06-20 15:44:13,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916497612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:13,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:13,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:13,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11918653] [2024-06-20 15:44:13,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:13,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:13,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:13,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:14,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:14,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:14,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 304 transitions, 3096 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:14,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:14,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:14,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:14,604 INFO L124 PetriNetUnfolderBase]: 834/1495 cut-off events. [2024-06-20 15:44:14,604 INFO L125 PetriNetUnfolderBase]: For 218910/218910 co-relation queries the response was YES. [2024-06-20 15:44:14,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10520 conditions, 1495 events. 834/1495 cut-off events. For 218910/218910 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8383 event pairs, 121 based on Foata normal form. 2/1495 useless extension candidates. Maximal degree in co-relation 10364. Up to 1446 conditions per place. [2024-06-20 15:44:14,620 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 297 selfloop transitions, 20 changer transitions 0/319 dead transitions. [2024-06-20 15:44:14,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 319 transitions, 3809 flow [2024-06-20 15:44:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:44:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:44:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-20 15:44:14,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-20 15:44:14,621 INFO L175 Difference]: Start difference. First operand has 356 places, 304 transitions, 3096 flow. Second operand 10 states and 111 transitions. [2024-06-20 15:44:14,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 319 transitions, 3809 flow [2024-06-20 15:44:15,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 319 transitions, 3737 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-20 15:44:15,381 INFO L231 Difference]: Finished difference. Result has 359 places, 306 transitions, 3120 flow [2024-06-20 15:44:15,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3026, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3120, PETRI_PLACES=359, PETRI_TRANSITIONS=306} [2024-06-20 15:44:15,381 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 329 predicate places. [2024-06-20 15:44:15,381 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 306 transitions, 3120 flow [2024-06-20 15:44:15,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:15,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:15,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:15,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-20 15:44:15,382 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:15,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:15,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1140925029, now seen corresponding path program 20 times [2024-06-20 15:44:15,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:15,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909097518] [2024-06-20 15:44:15,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:15,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:16,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:16,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:16,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909097518] [2024-06-20 15:44:16,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909097518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:16,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:16,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:16,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964291051] [2024-06-20 15:44:16,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:16,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:16,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:16,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:16,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:16,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:16,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 306 transitions, 3120 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:16,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:16,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:16,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:17,509 INFO L124 PetriNetUnfolderBase]: 840/1505 cut-off events. [2024-06-20 15:44:17,509 INFO L125 PetriNetUnfolderBase]: For 222304/222304 co-relation queries the response was YES. [2024-06-20 15:44:17,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10568 conditions, 1505 events. 840/1505 cut-off events. For 222304/222304 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8447 event pairs, 115 based on Foata normal form. 2/1505 useless extension candidates. Maximal degree in co-relation 10410. Up to 1392 conditions per place. [2024-06-20 15:44:17,526 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 288 selfloop transitions, 33 changer transitions 0/323 dead transitions. [2024-06-20 15:44:17,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 323 transitions, 4066 flow [2024-06-20 15:44:17,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:44:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:44:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-20 15:44:17,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-20 15:44:17,528 INFO L175 Difference]: Start difference. First operand has 359 places, 306 transitions, 3120 flow. Second operand 10 states and 121 transitions. [2024-06-20 15:44:17,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 323 transitions, 4066 flow [2024-06-20 15:44:18,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 323 transitions, 4001 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-20 15:44:18,289 INFO L231 Difference]: Finished difference. Result has 362 places, 308 transitions, 3155 flow [2024-06-20 15:44:18,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3055, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3155, PETRI_PLACES=362, PETRI_TRANSITIONS=308} [2024-06-20 15:44:18,290 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2024-06-20 15:44:18,290 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 308 transitions, 3155 flow [2024-06-20 15:44:18,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:18,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:18,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:18,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-20 15:44:18,291 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:18,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:18,291 INFO L85 PathProgramCache]: Analyzing trace with hash 2071737870, now seen corresponding path program 20 times [2024-06-20 15:44:18,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:18,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334959280] [2024-06-20 15:44:18,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:18,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:19,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:19,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:19,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334959280] [2024-06-20 15:44:19,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334959280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:19,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:19,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:19,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031794384] [2024-06-20 15:44:19,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:19,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:19,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:19,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:19,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:19,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:19,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 308 transitions, 3155 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:19,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:19,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:19,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:20,174 INFO L124 PetriNetUnfolderBase]: 839/1510 cut-off events. [2024-06-20 15:44:20,175 INFO L125 PetriNetUnfolderBase]: For 252362/252362 co-relation queries the response was YES. [2024-06-20 15:44:20,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9878 conditions, 1510 events. 839/1510 cut-off events. For 252362/252362 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8473 event pairs, 120 based on Foata normal form. 12/1520 useless extension candidates. Maximal degree in co-relation 9719. Up to 1394 conditions per place. [2024-06-20 15:44:20,192 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 294 selfloop transitions, 26 changer transitions 6/328 dead transitions. [2024-06-20 15:44:20,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 328 transitions, 3887 flow [2024-06-20 15:44:20,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:20,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:20,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-20 15:44:20,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-20 15:44:20,193 INFO L175 Difference]: Start difference. First operand has 362 places, 308 transitions, 3155 flow. Second operand 11 states and 130 transitions. [2024-06-20 15:44:20,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 328 transitions, 3887 flow [2024-06-20 15:44:20,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 328 transitions, 3760 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-20 15:44:20,773 INFO L231 Difference]: Finished difference. Result has 364 places, 307 transitions, 3074 flow [2024-06-20 15:44:20,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3028, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3074, PETRI_PLACES=364, PETRI_TRANSITIONS=307} [2024-06-20 15:44:20,774 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-20 15:44:20,774 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 307 transitions, 3074 flow [2024-06-20 15:44:20,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:20,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:20,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:20,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-20 15:44:20,775 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:20,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash 2071743605, now seen corresponding path program 21 times [2024-06-20 15:44:20,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:20,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856647774] [2024-06-20 15:44:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:20,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:22,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:22,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:22,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856647774] [2024-06-20 15:44:22,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856647774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:22,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:22,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:22,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583132326] [2024-06-20 15:44:22,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:22,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:22,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:22,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:22,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:22,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:22,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 307 transitions, 3074 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:22,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:22,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:22,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:23,509 INFO L124 PetriNetUnfolderBase]: 829/1494 cut-off events. [2024-06-20 15:44:23,509 INFO L125 PetriNetUnfolderBase]: For 169103/169103 co-relation queries the response was YES. [2024-06-20 15:44:23,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9427 conditions, 1494 events. 829/1494 cut-off events. For 169103/169103 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8403 event pairs, 115 based on Foata normal form. 2/1494 useless extension candidates. Maximal degree in co-relation 9269. Up to 1400 conditions per place. [2024-06-20 15:44:23,526 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 288 selfloop transitions, 33 changer transitions 0/323 dead transitions. [2024-06-20 15:44:23,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 323 transitions, 3762 flow [2024-06-20 15:44:23,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:23,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:23,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-20 15:44:23,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-20 15:44:23,527 INFO L175 Difference]: Start difference. First operand has 364 places, 307 transitions, 3074 flow. Second operand 11 states and 127 transitions. [2024-06-20 15:44:23,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 323 transitions, 3762 flow [2024-06-20 15:44:24,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 323 transitions, 3633 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-06-20 15:44:24,164 INFO L231 Difference]: Finished difference. Result has 362 places, 307 transitions, 3016 flow [2024-06-20 15:44:24,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3016, PETRI_PLACES=362, PETRI_TRANSITIONS=307} [2024-06-20 15:44:24,164 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 332 predicate places. [2024-06-20 15:44:24,164 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 307 transitions, 3016 flow [2024-06-20 15:44:24,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:24,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:24,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:24,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-20 15:44:24,165 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:24,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:24,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2079371961, now seen corresponding path program 15 times [2024-06-20 15:44:24,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:24,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210737335] [2024-06-20 15:44:24,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:24,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:25,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:25,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:25,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210737335] [2024-06-20 15:44:25,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210737335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:25,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:25,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:44:25,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903679219] [2024-06-20 15:44:25,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:25,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:44:25,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:25,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:44:25,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:44:25,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:25,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 307 transitions, 3016 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:25,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:25,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:25,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:26,003 INFO L124 PetriNetUnfolderBase]: 804/1443 cut-off events. [2024-06-20 15:44:26,004 INFO L125 PetriNetUnfolderBase]: For 102009/102009 co-relation queries the response was YES. [2024-06-20 15:44:26,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 1443 events. 804/1443 cut-off events. For 102009/102009 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8114 event pairs, 108 based on Foata normal form. 2/1443 useless extension candidates. Maximal degree in co-relation 7811. Up to 1394 conditions per place. [2024-06-20 15:44:26,016 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 299 selfloop transitions, 19 changer transitions 0/320 dead transitions. [2024-06-20 15:44:26,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 320 transitions, 3684 flow [2024-06-20 15:44:26,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 15:44:26,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 15:44:26,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-20 15:44:26,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 15:44:26,017 INFO L175 Difference]: Start difference. First operand has 362 places, 307 transitions, 3016 flow. Second operand 10 states and 110 transitions. [2024-06-20 15:44:26,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 320 transitions, 3684 flow [2024-06-20 15:44:26,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 320 transitions, 3530 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-20 15:44:26,410 INFO L231 Difference]: Finished difference. Result has 360 places, 307 transitions, 2904 flow [2024-06-20 15:44:26,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2862, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2904, PETRI_PLACES=360, PETRI_TRANSITIONS=307} [2024-06-20 15:44:26,411 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-20 15:44:26,411 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 307 transitions, 2904 flow [2024-06-20 15:44:26,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:26,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:26,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:26,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-20 15:44:26,411 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:26,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:26,412 INFO L85 PathProgramCache]: Analyzing trace with hash -128153116, now seen corresponding path program 1 times [2024-06-20 15:44:26,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:26,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159388183] [2024-06-20 15:44:26,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:26,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:27,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:27,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159388183] [2024-06-20 15:44:27,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159388183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:27,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:27,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:44:27,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007161117] [2024-06-20 15:44:27,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:27,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:44:27,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:27,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:44:27,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:44:27,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:27,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 307 transitions, 2904 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:27,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:27,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:27,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:28,451 INFO L124 PetriNetUnfolderBase]: 852/1543 cut-off events. [2024-06-20 15:44:28,451 INFO L125 PetriNetUnfolderBase]: For 232135/232135 co-relation queries the response was YES. [2024-06-20 15:44:28,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9591 conditions, 1543 events. 852/1543 cut-off events. For 232135/232135 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 8821 event pairs, 122 based on Foata normal form. 8/1549 useless extension candidates. Maximal degree in co-relation 9432. Up to 1236 conditions per place. [2024-06-20 15:44:28,468 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 304 selfloop transitions, 24 changer transitions 16/346 dead transitions. [2024-06-20 15:44:28,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 346 transitions, 3990 flow [2024-06-20 15:44:28,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 15:44:28,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 15:44:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-20 15:44:28,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3970223325062035 [2024-06-20 15:44:28,469 INFO L175 Difference]: Start difference. First operand has 360 places, 307 transitions, 2904 flow. Second operand 13 states and 160 transitions. [2024-06-20 15:44:28,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 346 transitions, 3990 flow [2024-06-20 15:44:29,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 346 transitions, 3872 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-20 15:44:29,263 INFO L231 Difference]: Finished difference. Result has 364 places, 303 transitions, 2813 flow [2024-06-20 15:44:29,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2813, PETRI_PLACES=364, PETRI_TRANSITIONS=303} [2024-06-20 15:44:29,264 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-20 15:44:29,264 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 303 transitions, 2813 flow [2024-06-20 15:44:29,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:29,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:29,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:29,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-20 15:44:29,264 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:29,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:29,265 INFO L85 PathProgramCache]: Analyzing trace with hash -69940696, now seen corresponding path program 2 times [2024-06-20 15:44:29,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:29,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383519496] [2024-06-20 15:44:29,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:29,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:30,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:30,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383519496] [2024-06-20 15:44:30,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383519496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:30,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:30,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:44:30,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675881638] [2024-06-20 15:44:30,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:30,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:44:30,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:30,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:44:30,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:44:30,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:30,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 303 transitions, 2813 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:30,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:30,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:30,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:31,270 INFO L124 PetriNetUnfolderBase]: 842/1523 cut-off events. [2024-06-20 15:44:31,270 INFO L125 PetriNetUnfolderBase]: For 250092/250092 co-relation queries the response was YES. [2024-06-20 15:44:31,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9486 conditions, 1523 events. 842/1523 cut-off events. For 250092/250092 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 8674 event pairs, 132 based on Foata normal form. 10/1531 useless extension candidates. Maximal degree in co-relation 9326. Up to 1388 conditions per place. [2024-06-20 15:44:31,288 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 295 selfloop transitions, 26 changer transitions 11/334 dead transitions. [2024-06-20 15:44:31,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 334 transitions, 3599 flow [2024-06-20 15:44:31,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 15:44:31,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 15:44:31,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-20 15:44:31,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746898263027295 [2024-06-20 15:44:31,289 INFO L175 Difference]: Start difference. First operand has 364 places, 303 transitions, 2813 flow. Second operand 13 states and 151 transitions. [2024-06-20 15:44:31,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 334 transitions, 3599 flow [2024-06-20 15:44:31,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 334 transitions, 3515 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-20 15:44:31,910 INFO L231 Difference]: Finished difference. Result has 358 places, 302 transitions, 2779 flow [2024-06-20 15:44:31,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2733, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2779, PETRI_PLACES=358, PETRI_TRANSITIONS=302} [2024-06-20 15:44:31,910 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-20 15:44:31,910 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 302 transitions, 2779 flow [2024-06-20 15:44:31,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:31,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:31,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:31,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-20 15:44:31,910 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:31,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash -69945346, now seen corresponding path program 3 times [2024-06-20 15:44:31,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:31,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797618820] [2024-06-20 15:44:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:31,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:33,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:33,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:33,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797618820] [2024-06-20 15:44:33,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797618820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:33,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:33,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:44:33,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553502207] [2024-06-20 15:44:33,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:33,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:44:33,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:33,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:44:33,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:44:33,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:33,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 302 transitions, 2779 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:33,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:33,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:33,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:34,458 INFO L124 PetriNetUnfolderBase]: 830/1503 cut-off events. [2024-06-20 15:44:34,458 INFO L125 PetriNetUnfolderBase]: For 223849/223849 co-relation queries the response was YES. [2024-06-20 15:44:34,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9235 conditions, 1503 events. 830/1503 cut-off events. For 223849/223849 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8517 event pairs, 128 based on Foata normal form. 8/1509 useless extension candidates. Maximal degree in co-relation 9080. Up to 1378 conditions per place. [2024-06-20 15:44:34,475 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 293 selfloop transitions, 24 changer transitions 11/330 dead transitions. [2024-06-20 15:44:34,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 330 transitions, 3523 flow [2024-06-20 15:44:34,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 15:44:34,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 15:44:34,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions. [2024-06-20 15:44:34,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36724565756823824 [2024-06-20 15:44:34,476 INFO L175 Difference]: Start difference. First operand has 358 places, 302 transitions, 2779 flow. Second operand 13 states and 148 transitions. [2024-06-20 15:44:34,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 330 transitions, 3523 flow [2024-06-20 15:44:35,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 330 transitions, 3468 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-20 15:44:35,108 INFO L231 Difference]: Finished difference. Result has 358 places, 299 transitions, 2750 flow [2024-06-20 15:44:35,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2724, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2750, PETRI_PLACES=358, PETRI_TRANSITIONS=299} [2024-06-20 15:44:35,108 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-20 15:44:35,108 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 299 transitions, 2750 flow [2024-06-20 15:44:35,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:35,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:35,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:35,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-20 15:44:35,108 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:35,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:35,109 INFO L85 PathProgramCache]: Analyzing trace with hash -70060666, now seen corresponding path program 4 times [2024-06-20 15:44:35,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:35,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402440433] [2024-06-20 15:44:35,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:35,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:36,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:36,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402440433] [2024-06-20 15:44:36,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402440433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:36,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:36,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:44:36,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228254050] [2024-06-20 15:44:36,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:36,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:44:36,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:36,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:44:36,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:44:37,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:37,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 299 transitions, 2750 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:37,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:37,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:37,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:37,756 INFO L124 PetriNetUnfolderBase]: 823/1490 cut-off events. [2024-06-20 15:44:37,756 INFO L125 PetriNetUnfolderBase]: For 223959/223959 co-relation queries the response was YES. [2024-06-20 15:44:37,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9181 conditions, 1490 events. 823/1490 cut-off events. For 223959/223959 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8433 event pairs, 124 based on Foata normal form. 8/1496 useless extension candidates. Maximal degree in co-relation 9026. Up to 1360 conditions per place. [2024-06-20 15:44:37,772 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 287 selfloop transitions, 21 changer transitions 18/328 dead transitions. [2024-06-20 15:44:37,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 328 transitions, 3492 flow [2024-06-20 15:44:37,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 15:44:37,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 15:44:37,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions. [2024-06-20 15:44:37,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36724565756823824 [2024-06-20 15:44:37,773 INFO L175 Difference]: Start difference. First operand has 358 places, 299 transitions, 2750 flow. Second operand 13 states and 148 transitions. [2024-06-20 15:44:37,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 328 transitions, 3492 flow [2024-06-20 15:44:38,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 328 transitions, 3440 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 15:44:38,516 INFO L231 Difference]: Finished difference. Result has 355 places, 294 transitions, 2693 flow [2024-06-20 15:44:38,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2698, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2693, PETRI_PLACES=355, PETRI_TRANSITIONS=294} [2024-06-20 15:44:38,516 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-20 15:44:38,516 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 294 transitions, 2693 flow [2024-06-20 15:44:38,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:38,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:38,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:38,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-20 15:44:38,517 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:38,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:38,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1748406364, now seen corresponding path program 5 times [2024-06-20 15:44:38,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:38,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951256493] [2024-06-20 15:44:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:38,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:40,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:40,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:40,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951256493] [2024-06-20 15:44:40,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951256493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:40,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:40,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:44:40,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875654830] [2024-06-20 15:44:40,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:40,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:44:40,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:40,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:44:40,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:44:41,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:41,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 294 transitions, 2693 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:41,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:41,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:41,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:41,707 INFO L124 PetriNetUnfolderBase]: 812/1468 cut-off events. [2024-06-20 15:44:41,707 INFO L125 PetriNetUnfolderBase]: For 237767/237767 co-relation queries the response was YES. [2024-06-20 15:44:41,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9060 conditions, 1468 events. 812/1468 cut-off events. For 237767/237767 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8283 event pairs, 130 based on Foata normal form. 10/1476 useless extension candidates. Maximal degree in co-relation 8906. Up to 1371 conditions per place. [2024-06-20 15:44:41,722 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 290 selfloop transitions, 15 changer transitions 11/318 dead transitions. [2024-06-20 15:44:41,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 318 transitions, 3411 flow [2024-06-20 15:44:41,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:44:41,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:44:41,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-20 15:44:41,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 15:44:41,723 INFO L175 Difference]: Start difference. First operand has 355 places, 294 transitions, 2693 flow. Second operand 12 states and 132 transitions. [2024-06-20 15:44:41,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 318 transitions, 3411 flow [2024-06-20 15:44:42,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 318 transitions, 3359 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-20 15:44:42,387 INFO L231 Difference]: Finished difference. Result has 347 places, 291 transitions, 2650 flow [2024-06-20 15:44:42,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2641, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2650, PETRI_PLACES=347, PETRI_TRANSITIONS=291} [2024-06-20 15:44:42,388 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2024-06-20 15:44:42,388 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 291 transitions, 2650 flow [2024-06-20 15:44:42,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:42,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:42,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:42,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-20 15:44:42,388 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:42,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:42,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1748228734, now seen corresponding path program 6 times [2024-06-20 15:44:42,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:42,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403474214] [2024-06-20 15:44:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:42,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:43,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:43,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403474214] [2024-06-20 15:44:43,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403474214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:43,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:43,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:44:43,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874067241] [2024-06-20 15:44:43,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:43,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:44:43,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:43,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:44:43,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:44:44,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:44,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 291 transitions, 2650 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:44,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:44,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:44,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:44,624 INFO L124 PetriNetUnfolderBase]: 833/1515 cut-off events. [2024-06-20 15:44:44,624 INFO L125 PetriNetUnfolderBase]: For 292815/292815 co-relation queries the response was YES. [2024-06-20 15:44:44,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10346 conditions, 1515 events. 833/1515 cut-off events. For 292815/292815 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8601 event pairs, 139 based on Foata normal form. 8/1521 useless extension candidates. Maximal degree in co-relation 10194. Up to 1356 conditions per place. [2024-06-20 15:44:44,641 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 297 selfloop transitions, 16 changer transitions 7/322 dead transitions. [2024-06-20 15:44:44,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 322 transitions, 3652 flow [2024-06-20 15:44:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:44:44,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:44:44,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-20 15:44:44,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-20 15:44:44,642 INFO L175 Difference]: Start difference. First operand has 347 places, 291 transitions, 2650 flow. Second operand 12 states and 138 transitions. [2024-06-20 15:44:44,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 322 transitions, 3652 flow [2024-06-20 15:44:45,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 322 transitions, 3614 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 15:44:45,339 INFO L231 Difference]: Finished difference. Result has 346 places, 291 transitions, 2657 flow [2024-06-20 15:44:45,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2616, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2657, PETRI_PLACES=346, PETRI_TRANSITIONS=291} [2024-06-20 15:44:45,339 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-20 15:44:45,339 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 291 transitions, 2657 flow [2024-06-20 15:44:45,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:45,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:45,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:45,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-20 15:44:45,340 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:45,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:45,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1677461882, now seen corresponding path program 7 times [2024-06-20 15:44:45,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:45,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295304947] [2024-06-20 15:44:45,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:45,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:46,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:46,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295304947] [2024-06-20 15:44:46,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295304947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:46,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:46,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:44:46,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451707525] [2024-06-20 15:44:46,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:46,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:44:46,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:46,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:44:46,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:44:46,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:46,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 291 transitions, 2657 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:46,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:46,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:46,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:47,526 INFO L124 PetriNetUnfolderBase]: 831/1513 cut-off events. [2024-06-20 15:44:47,526 INFO L125 PetriNetUnfolderBase]: For 301177/301177 co-relation queries the response was YES. [2024-06-20 15:44:47,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10328 conditions, 1513 events. 831/1513 cut-off events. For 301177/301177 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8606 event pairs, 151 based on Foata normal form. 10/1521 useless extension candidates. Maximal degree in co-relation 10176. Up to 1403 conditions per place. [2024-06-20 15:44:47,543 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 285 selfloop transitions, 18 changer transitions 11/316 dead transitions. [2024-06-20 15:44:47,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 316 transitions, 3375 flow [2024-06-20 15:44:47,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:44:47,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:44:47,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-20 15:44:47,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-20 15:44:47,543 INFO L175 Difference]: Start difference. First operand has 346 places, 291 transitions, 2657 flow. Second operand 12 states and 137 transitions. [2024-06-20 15:44:47,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 316 transitions, 3375 flow [2024-06-20 15:44:48,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 316 transitions, 3342 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-20 15:44:48,483 INFO L231 Difference]: Finished difference. Result has 346 places, 288 transitions, 2634 flow [2024-06-20 15:44:48,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2624, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2634, PETRI_PLACES=346, PETRI_TRANSITIONS=288} [2024-06-20 15:44:48,483 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-20 15:44:48,483 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 288 transitions, 2634 flow [2024-06-20 15:44:48,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:48,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:48,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:48,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-20 15:44:48,484 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:48,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:48,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1677466532, now seen corresponding path program 8 times [2024-06-20 15:44:48,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:48,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528811882] [2024-06-20 15:44:48,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:48,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:49,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:49,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:49,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528811882] [2024-06-20 15:44:49,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528811882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:49,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:49,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:44:49,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949891734] [2024-06-20 15:44:49,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:49,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:44:49,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:49,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:44:49,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:44:49,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:49,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 288 transitions, 2634 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:49,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:49,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:49,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:50,622 INFO L124 PetriNetUnfolderBase]: 819/1493 cut-off events. [2024-06-20 15:44:50,622 INFO L125 PetriNetUnfolderBase]: For 287410/287410 co-relation queries the response was YES. [2024-06-20 15:44:50,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10237 conditions, 1493 events. 819/1493 cut-off events. For 287410/287410 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8469 event pairs, 147 based on Foata normal form. 8/1499 useless extension candidates. Maximal degree in co-relation 10086. Up to 1393 conditions per place. [2024-06-20 15:44:50,638 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 283 selfloop transitions, 16 changer transitions 11/312 dead transitions. [2024-06-20 15:44:50,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 312 transitions, 3330 flow [2024-06-20 15:44:50,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:44:50,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:44:50,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-20 15:44:50,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-20 15:44:50,639 INFO L175 Difference]: Start difference. First operand has 346 places, 288 transitions, 2634 flow. Second operand 12 states and 134 transitions. [2024-06-20 15:44:50,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 312 transitions, 3330 flow [2024-06-20 15:44:51,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 312 transitions, 3283 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-20 15:44:51,529 INFO L231 Difference]: Finished difference. Result has 344 places, 285 transitions, 2601 flow [2024-06-20 15:44:51,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2587, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2601, PETRI_PLACES=344, PETRI_TRANSITIONS=285} [2024-06-20 15:44:51,529 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 314 predicate places. [2024-06-20 15:44:51,529 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 285 transitions, 2601 flow [2024-06-20 15:44:51,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:51,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:51,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:51,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-20 15:44:51,530 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:51,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:51,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1677581852, now seen corresponding path program 9 times [2024-06-20 15:44:51,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:51,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144327957] [2024-06-20 15:44:51,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:51,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:53,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:53,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144327957] [2024-06-20 15:44:53,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144327957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:53,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:53,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:44:53,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124906311] [2024-06-20 15:44:53,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:53,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:44:53,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:53,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:44:53,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:44:53,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:53,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 285 transitions, 2601 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:53,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:53,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:53,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:54,603 INFO L124 PetriNetUnfolderBase]: 798/1454 cut-off events. [2024-06-20 15:44:54,603 INFO L125 PetriNetUnfolderBase]: For 259829/259829 co-relation queries the response was YES. [2024-06-20 15:44:54,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9616 conditions, 1454 events. 798/1454 cut-off events. For 259829/259829 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8164 event pairs, 133 based on Foata normal form. 8/1460 useless extension candidates. Maximal degree in co-relation 9466. Up to 1284 conditions per place. [2024-06-20 15:44:54,619 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 288 selfloop transitions, 14 changer transitions 11/315 dead transitions. [2024-06-20 15:44:54,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 315 transitions, 3573 flow [2024-06-20 15:44:54,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:44:54,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:44:54,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-20 15:44:54,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-20 15:44:54,620 INFO L175 Difference]: Start difference. First operand has 344 places, 285 transitions, 2601 flow. Second operand 12 states and 139 transitions. [2024-06-20 15:44:54,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 315 transitions, 3573 flow [2024-06-20 15:44:55,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 315 transitions, 3533 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-20 15:44:55,371 INFO L231 Difference]: Finished difference. Result has 341 places, 281 transitions, 2571 flow [2024-06-20 15:44:55,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2571, PETRI_PLACES=341, PETRI_TRANSITIONS=281} [2024-06-20 15:44:55,372 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-20 15:44:55,372 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 281 transitions, 2571 flow [2024-06-20 15:44:55,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:55,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:55,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:55,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-20 15:44:55,372 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:55,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:55,373 INFO L85 PathProgramCache]: Analyzing trace with hash 826205410, now seen corresponding path program 10 times [2024-06-20 15:44:55,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:55,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405385842] [2024-06-20 15:44:55,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:55,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:56,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:56,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:56,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405385842] [2024-06-20 15:44:56,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405385842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:56,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:56,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:44:56,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888338944] [2024-06-20 15:44:56,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:56,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:44:56,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:56,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:44:56,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:44:57,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:57,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 281 transitions, 2571 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:57,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:57,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:57,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:57,602 INFO L124 PetriNetUnfolderBase]: 762/1382 cut-off events. [2024-06-20 15:44:57,602 INFO L125 PetriNetUnfolderBase]: For 202205/202205 co-relation queries the response was YES. [2024-06-20 15:44:57,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8199 conditions, 1382 events. 762/1382 cut-off events. For 202205/202205 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7681 event pairs, 124 based on Foata normal form. 10/1390 useless extension candidates. Maximal degree in co-relation 8050. Up to 1284 conditions per place. [2024-06-20 15:44:57,614 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 278 selfloop transitions, 12 changer transitions 13/305 dead transitions. [2024-06-20 15:44:57,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 305 transitions, 3263 flow [2024-06-20 15:44:57,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:44:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:44:57,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-20 15:44:57,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-20 15:44:57,615 INFO L175 Difference]: Start difference. First operand has 341 places, 281 transitions, 2571 flow. Second operand 12 states and 131 transitions. [2024-06-20 15:44:57,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 305 transitions, 3263 flow [2024-06-20 15:44:58,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 305 transitions, 3228 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-20 15:44:58,061 INFO L231 Difference]: Finished difference. Result has 336 places, 277 transitions, 2529 flow [2024-06-20 15:44:58,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2536, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2529, PETRI_PLACES=336, PETRI_TRANSITIONS=277} [2024-06-20 15:44:58,062 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-06-20 15:44:58,062 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 277 transitions, 2529 flow [2024-06-20 15:44:58,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:58,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:44:58,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:44:58,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-20 15:44:58,062 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:44:58,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:44:58,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1672813308, now seen corresponding path program 1 times [2024-06-20 15:44:58,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:44:58,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113417863] [2024-06-20 15:44:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:44:58,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:44:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:44:59,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:44:59,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:44:59,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113417863] [2024-06-20 15:44:59,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113417863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:44:59,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:44:59,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:44:59,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347232039] [2024-06-20 15:44:59,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:44:59,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:44:59,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:44:59,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:44:59,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:44:59,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:44:59,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 277 transitions, 2529 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:44:59,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:44:59,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:44:59,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:44:59,920 INFO L124 PetriNetUnfolderBase]: 734/1326 cut-off events. [2024-06-20 15:44:59,921 INFO L125 PetriNetUnfolderBase]: For 131198/131198 co-relation queries the response was YES. [2024-06-20 15:44:59,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7703 conditions, 1326 events. 734/1326 cut-off events. For 131198/131198 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7304 event pairs, 115 based on Foata normal form. 2/1326 useless extension candidates. Maximal degree in co-relation 7556. Up to 1273 conditions per place. [2024-06-20 15:44:59,934 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 280 selfloop transitions, 14 changer transitions 0/296 dead transitions. [2024-06-20 15:44:59,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 296 transitions, 3183 flow [2024-06-20 15:44:59,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:44:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:44:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-20 15:44:59,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-20 15:44:59,941 INFO L175 Difference]: Start difference. First operand has 336 places, 277 transitions, 2529 flow. Second operand 11 states and 116 transitions. [2024-06-20 15:44:59,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 296 transitions, 3183 flow [2024-06-20 15:45:00,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 296 transitions, 3155 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-20 15:45:00,386 INFO L231 Difference]: Finished difference. Result has 330 places, 278 transitions, 2553 flow [2024-06-20 15:45:00,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2553, PETRI_PLACES=330, PETRI_TRANSITIONS=278} [2024-06-20 15:45:00,386 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-06-20 15:45:00,386 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 278 transitions, 2553 flow [2024-06-20 15:45:00,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:00,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:00,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:00,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-20 15:45:00,387 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:00,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:00,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1920539192, now seen corresponding path program 2 times [2024-06-20 15:45:00,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:00,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487169503] [2024-06-20 15:45:00,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:00,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:01,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:01,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487169503] [2024-06-20 15:45:01,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487169503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:01,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:01,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:01,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415174352] [2024-06-20 15:45:01,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:01,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:01,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:01,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:01,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:02,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:02,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 278 transitions, 2553 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:02,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:02,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:02,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:02,696 INFO L124 PetriNetUnfolderBase]: 738/1334 cut-off events. [2024-06-20 15:45:02,696 INFO L125 PetriNetUnfolderBase]: For 130713/130713 co-relation queries the response was YES. [2024-06-20 15:45:02,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7769 conditions, 1334 events. 738/1334 cut-off events. For 130713/130713 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7355 event pairs, 88 based on Foata normal form. 2/1334 useless extension candidates. Maximal degree in co-relation 7622. Up to 735 conditions per place. [2024-06-20 15:45:02,710 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 159 selfloop transitions, 137 changer transitions 0/298 dead transitions. [2024-06-20 15:45:02,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 298 transitions, 3219 flow [2024-06-20 15:45:02,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:02,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:02,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-20 15:45:02,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-20 15:45:02,711 INFO L175 Difference]: Start difference. First operand has 330 places, 278 transitions, 2553 flow. Second operand 11 states and 139 transitions. [2024-06-20 15:45:02,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 298 transitions, 3219 flow [2024-06-20 15:45:03,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 298 transitions, 3177 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-20 15:45:03,124 INFO L231 Difference]: Finished difference. Result has 332 places, 279 transitions, 2811 flow [2024-06-20 15:45:03,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2511, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2811, PETRI_PLACES=332, PETRI_TRANSITIONS=279} [2024-06-20 15:45:03,124 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 302 predicate places. [2024-06-20 15:45:03,124 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 279 transitions, 2811 flow [2024-06-20 15:45:03,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:03,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:03,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:03,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-20 15:45:03,125 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:03,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:03,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1920547562, now seen corresponding path program 3 times [2024-06-20 15:45:03,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:03,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074778611] [2024-06-20 15:45:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:03,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:04,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:04,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074778611] [2024-06-20 15:45:04,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074778611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:04,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:04,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:04,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727829458] [2024-06-20 15:45:04,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:04,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:04,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:04,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:04,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:05,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:05,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 279 transitions, 2811 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:05,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:05,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:05,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:05,559 INFO L124 PetriNetUnfolderBase]: 749/1355 cut-off events. [2024-06-20 15:45:05,559 INFO L125 PetriNetUnfolderBase]: For 147911/147911 co-relation queries the response was YES. [2024-06-20 15:45:05,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8457 conditions, 1355 events. 749/1355 cut-off events. For 147911/147911 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7527 event pairs, 65 based on Foata normal form. 2/1355 useless extension candidates. Maximal degree in co-relation 8309. Up to 974 conditions per place. [2024-06-20 15:45:05,572 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 206 selfloop transitions, 92 changer transitions 0/300 dead transitions. [2024-06-20 15:45:05,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 300 transitions, 3731 flow [2024-06-20 15:45:05,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:05,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:05,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:45:05,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 15:45:05,573 INFO L175 Difference]: Start difference. First operand has 332 places, 279 transitions, 2811 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:45:05,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 300 transitions, 3731 flow [2024-06-20 15:45:05,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 300 transitions, 3441 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-20 15:45:06,001 INFO L231 Difference]: Finished difference. Result has 334 places, 281 transitions, 2755 flow [2024-06-20 15:45:06,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2755, PETRI_PLACES=334, PETRI_TRANSITIONS=281} [2024-06-20 15:45:06,002 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 304 predicate places. [2024-06-20 15:45:06,002 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 281 transitions, 2755 flow [2024-06-20 15:45:06,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:06,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:06,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:06,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-20 15:45:06,003 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:06,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:06,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1920301608, now seen corresponding path program 11 times [2024-06-20 15:45:06,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:06,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882032720] [2024-06-20 15:45:06,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:06,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:08,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:08,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882032720] [2024-06-20 15:45:08,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882032720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:08,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:08,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:08,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316090689] [2024-06-20 15:45:08,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:08,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:08,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:08,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:08,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:08,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:08,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 281 transitions, 2755 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:08,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:08,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:08,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:08,919 INFO L124 PetriNetUnfolderBase]: 765/1391 cut-off events. [2024-06-20 15:45:08,919 INFO L125 PetriNetUnfolderBase]: For 203730/203730 co-relation queries the response was YES. [2024-06-20 15:45:08,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8464 conditions, 1391 events. 765/1391 cut-off events. For 203730/203730 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7843 event pairs, 82 based on Foata normal form. 10/1399 useless extension candidates. Maximal degree in co-relation 8315. Up to 1022 conditions per place. [2024-06-20 15:45:08,933 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 211 selfloop transitions, 81 changer transitions 11/305 dead transitions. [2024-06-20 15:45:08,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 305 transitions, 3449 flow [2024-06-20 15:45:08,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:45:08,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:45:08,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-20 15:45:08,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-20 15:45:08,934 INFO L175 Difference]: Start difference. First operand has 334 places, 281 transitions, 2755 flow. Second operand 12 states and 145 transitions. [2024-06-20 15:45:08,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 305 transitions, 3449 flow [2024-06-20 15:45:09,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 305 transitions, 3307 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-20 15:45:09,439 INFO L231 Difference]: Finished difference. Result has 339 places, 278 transitions, 2760 flow [2024-06-20 15:45:09,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2613, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2760, PETRI_PLACES=339, PETRI_TRANSITIONS=278} [2024-06-20 15:45:09,439 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-20 15:45:09,439 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 278 transitions, 2760 flow [2024-06-20 15:45:09,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:09,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:09,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:09,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-20 15:45:09,439 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:09,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:09,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1914052442, now seen corresponding path program 4 times [2024-06-20 15:45:09,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:09,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43562628] [2024-06-20 15:45:09,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:09,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:11,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:11,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:11,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43562628] [2024-06-20 15:45:11,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43562628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:11,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:11,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:11,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126896389] [2024-06-20 15:45:11,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:11,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:11,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:11,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:11,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:11,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:11,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 278 transitions, 2760 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:11,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:11,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:11,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:11,777 INFO L124 PetriNetUnfolderBase]: 743/1349 cut-off events. [2024-06-20 15:45:11,778 INFO L125 PetriNetUnfolderBase]: For 152542/152542 co-relation queries the response was YES. [2024-06-20 15:45:11,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8424 conditions, 1349 events. 743/1349 cut-off events. For 152542/152542 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7552 event pairs, 80 based on Foata normal form. 2/1349 useless extension candidates. Maximal degree in co-relation 8273. Up to 1024 conditions per place. [2024-06-20 15:45:11,792 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 216 selfloop transitions, 80 changer transitions 0/298 dead transitions. [2024-06-20 15:45:11,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 298 transitions, 3420 flow [2024-06-20 15:45:11,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:11,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:11,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:45:11,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 15:45:11,793 INFO L175 Difference]: Start difference. First operand has 339 places, 278 transitions, 2760 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:45:11,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 298 transitions, 3420 flow [2024-06-20 15:45:12,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 298 transitions, 3254 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 15:45:12,333 INFO L231 Difference]: Finished difference. Result has 336 places, 279 transitions, 2774 flow [2024-06-20 15:45:12,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2774, PETRI_PLACES=336, PETRI_TRANSITIONS=279} [2024-06-20 15:45:12,333 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-06-20 15:45:12,333 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 279 transitions, 2774 flow [2024-06-20 15:45:12,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:12,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:12,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:12,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-20 15:45:12,334 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:12,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:12,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1914045498, now seen corresponding path program 12 times [2024-06-20 15:45:12,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:12,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912438197] [2024-06-20 15:45:12,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:12,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:14,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:14,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:14,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912438197] [2024-06-20 15:45:14,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912438197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:14,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:14,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:14,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520946642] [2024-06-20 15:45:14,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:14,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:14,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:14,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:14,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:14,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:14,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 279 transitions, 2774 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:14,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:14,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:14,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:14,768 INFO L124 PetriNetUnfolderBase]: 759/1385 cut-off events. [2024-06-20 15:45:14,769 INFO L125 PetriNetUnfolderBase]: For 203300/203300 co-relation queries the response was YES. [2024-06-20 15:45:14,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8533 conditions, 1385 events. 759/1385 cut-off events. For 203300/203300 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7794 event pairs, 84 based on Foata normal form. 10/1393 useless extension candidates. Maximal degree in co-relation 8383. Up to 1016 conditions per place. [2024-06-20 15:45:14,780 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 213 selfloop transitions, 78 changer transitions 11/304 dead transitions. [2024-06-20 15:45:14,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 304 transitions, 3470 flow [2024-06-20 15:45:14,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:45:14,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:45:14,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-20 15:45:14,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-20 15:45:14,781 INFO L175 Difference]: Start difference. First operand has 336 places, 279 transitions, 2774 flow. Second operand 12 states and 147 transitions. [2024-06-20 15:45:14,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 304 transitions, 3470 flow [2024-06-20 15:45:15,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 304 transitions, 3302 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-20 15:45:15,301 INFO L231 Difference]: Finished difference. Result has 339 places, 276 transitions, 2746 flow [2024-06-20 15:45:15,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2606, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2746, PETRI_PLACES=339, PETRI_TRANSITIONS=276} [2024-06-20 15:45:15,301 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-20 15:45:15,301 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 276 transitions, 2746 flow [2024-06-20 15:45:15,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:15,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:15,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:15,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-20 15:45:15,302 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:15,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:15,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1913872518, now seen corresponding path program 13 times [2024-06-20 15:45:15,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:15,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020437242] [2024-06-20 15:45:15,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:15,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:17,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:17,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:17,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020437242] [2024-06-20 15:45:17,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020437242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:17,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:17,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:17,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371890147] [2024-06-20 15:45:17,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:17,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:17,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:17,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:17,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:17,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:17,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 276 transitions, 2746 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:17,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:17,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:17,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:18,082 INFO L124 PetriNetUnfolderBase]: 749/1371 cut-off events. [2024-06-20 15:45:18,082 INFO L125 PetriNetUnfolderBase]: For 206754/206754 co-relation queries the response was YES. [2024-06-20 15:45:18,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8470 conditions, 1371 events. 749/1371 cut-off events. For 206754/206754 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7696 event pairs, 75 based on Foata normal form. 10/1379 useless extension candidates. Maximal degree in co-relation 8319. Up to 976 conditions per place. [2024-06-20 15:45:18,093 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 203 selfloop transitions, 84 changer transitions 11/300 dead transitions. [2024-06-20 15:45:18,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 300 transitions, 3430 flow [2024-06-20 15:45:18,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:45:18,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:45:18,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-20 15:45:18,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-20 15:45:18,094 INFO L175 Difference]: Start difference. First operand has 339 places, 276 transitions, 2746 flow. Second operand 12 states and 147 transitions. [2024-06-20 15:45:18,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 300 transitions, 3430 flow [2024-06-20 15:45:18,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 300 transitions, 3270 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 15:45:18,498 INFO L231 Difference]: Finished difference. Result has 337 places, 273 transitions, 2736 flow [2024-06-20 15:45:18,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2586, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2736, PETRI_PLACES=337, PETRI_TRANSITIONS=273} [2024-06-20 15:45:18,498 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2024-06-20 15:45:18,498 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 273 transitions, 2736 flow [2024-06-20 15:45:18,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:18,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:18,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:18,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-20 15:45:18,499 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:18,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:18,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1743050118, now seen corresponding path program 14 times [2024-06-20 15:45:18,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:18,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473532645] [2024-06-20 15:45:18,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:20,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:20,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473532645] [2024-06-20 15:45:20,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473532645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:20,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:20,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:20,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680689992] [2024-06-20 15:45:20,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:20,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:20,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:20,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:20,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:20,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:20,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 273 transitions, 2736 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:20,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:20,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:20,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:21,487 INFO L124 PetriNetUnfolderBase]: 766/1410 cut-off events. [2024-06-20 15:45:21,487 INFO L125 PetriNetUnfolderBase]: For 255330/255330 co-relation queries the response was YES. [2024-06-20 15:45:21,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9731 conditions, 1410 events. 766/1410 cut-off events. For 255330/255330 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8021 event pairs, 93 based on Foata normal form. 8/1416 useless extension candidates. Maximal degree in co-relation 9581. Up to 906 conditions per place. [2024-06-20 15:45:21,502 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 207 selfloop transitions, 84 changer transitions 10/303 dead transitions. [2024-06-20 15:45:21,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 303 transitions, 3684 flow [2024-06-20 15:45:21,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:45:21,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:45:21,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-20 15:45:21,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-20 15:45:21,503 INFO L175 Difference]: Start difference. First operand has 337 places, 273 transitions, 2736 flow. Second operand 12 states and 153 transitions. [2024-06-20 15:45:21,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 303 transitions, 3684 flow [2024-06-20 15:45:22,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 303 transitions, 3508 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 15:45:22,108 INFO L231 Difference]: Finished difference. Result has 335 places, 270 transitions, 2717 flow [2024-06-20 15:45:22,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2564, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2717, PETRI_PLACES=335, PETRI_TRANSITIONS=270} [2024-06-20 15:45:22,109 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-20 15:45:22,109 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 270 transitions, 2717 flow [2024-06-20 15:45:22,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:22,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:22,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:22,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-20 15:45:22,109 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:22,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:22,109 INFO L85 PathProgramCache]: Analyzing trace with hash -52598566, now seen corresponding path program 15 times [2024-06-20 15:45:22,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:22,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816769921] [2024-06-20 15:45:22,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:22,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:23,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:23,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:23,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816769921] [2024-06-20 15:45:23,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816769921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:23,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:23,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:23,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485199163] [2024-06-20 15:45:23,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:23,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:23,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:23,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:23,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:23,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:23,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 270 transitions, 2717 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:23,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:23,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:23,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:24,171 INFO L124 PetriNetUnfolderBase]: 757/1395 cut-off events. [2024-06-20 15:45:24,171 INFO L125 PetriNetUnfolderBase]: For 265203/265203 co-relation queries the response was YES. [2024-06-20 15:45:24,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9430 conditions, 1395 events. 757/1395 cut-off events. For 265203/265203 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7881 event pairs, 124 based on Foata normal form. 12/1405 useless extension candidates. Maximal degree in co-relation 9281. Up to 803 conditions per place. [2024-06-20 15:45:24,186 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 171 selfloop transitions, 111 changer transitions 10/294 dead transitions. [2024-06-20 15:45:24,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 294 transitions, 3391 flow [2024-06-20 15:45:24,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:24,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-20 15:45:24,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-20 15:45:24,187 INFO L175 Difference]: Start difference. First operand has 335 places, 270 transitions, 2717 flow. Second operand 11 states and 144 transitions. [2024-06-20 15:45:24,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 294 transitions, 3391 flow [2024-06-20 15:45:24,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 294 transitions, 3220 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-20 15:45:24,795 INFO L231 Difference]: Finished difference. Result has 331 places, 264 transitions, 2727 flow [2024-06-20 15:45:24,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2546, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2727, PETRI_PLACES=331, PETRI_TRANSITIONS=264} [2024-06-20 15:45:24,796 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-20 15:45:24,796 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 264 transitions, 2727 flow [2024-06-20 15:45:24,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:24,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:24,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:24,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-20 15:45:24,796 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:24,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:24,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1913867868, now seen corresponding path program 16 times [2024-06-20 15:45:24,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:24,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595974813] [2024-06-20 15:45:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:24,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:26,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:26,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:26,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595974813] [2024-06-20 15:45:26,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595974813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:26,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:26,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:26,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169282807] [2024-06-20 15:45:26,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:26,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:26,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:26,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:26,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:26,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:26,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 264 transitions, 2727 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:26,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:26,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:26,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:26,909 INFO L124 PetriNetUnfolderBase]: 737/1363 cut-off events. [2024-06-20 15:45:26,910 INFO L125 PetriNetUnfolderBase]: For 230599/230599 co-relation queries the response was YES. [2024-06-20 15:45:26,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9312 conditions, 1363 events. 737/1363 cut-off events. For 230599/230599 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7716 event pairs, 96 based on Foata normal form. 8/1369 useless extension candidates. Maximal degree in co-relation 9165. Up to 1003 conditions per place. [2024-06-20 15:45:26,922 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 198 selfloop transitions, 76 changer transitions 11/287 dead transitions. [2024-06-20 15:45:26,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 287 transitions, 3371 flow [2024-06-20 15:45:26,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:45:26,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:45:26,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-20 15:45:26,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-20 15:45:26,922 INFO L175 Difference]: Start difference. First operand has 331 places, 264 transitions, 2727 flow. Second operand 12 states and 143 transitions. [2024-06-20 15:45:26,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 287 transitions, 3371 flow [2024-06-20 15:45:27,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 287 transitions, 3119 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-20 15:45:27,581 INFO L231 Difference]: Finished difference. Result has 328 places, 261 transitions, 2607 flow [2024-06-20 15:45:27,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2475, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2607, PETRI_PLACES=328, PETRI_TRANSITIONS=261} [2024-06-20 15:45:27,581 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-20 15:45:27,582 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 261 transitions, 2607 flow [2024-06-20 15:45:27,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:27,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:27,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:27,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-20 15:45:27,582 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:27,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:27,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1743165438, now seen corresponding path program 17 times [2024-06-20 15:45:27,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:27,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341396062] [2024-06-20 15:45:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:27,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:28,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:28,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341396062] [2024-06-20 15:45:28,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341396062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:28,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:28,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:28,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993103669] [2024-06-20 15:45:28,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:28,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:28,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:28,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:28,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:29,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:29,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 261 transitions, 2607 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:29,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:29,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:29,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:29,661 INFO L124 PetriNetUnfolderBase]: 730/1350 cut-off events. [2024-06-20 15:45:29,661 INFO L125 PetriNetUnfolderBase]: For 226296/226296 co-relation queries the response was YES. [2024-06-20 15:45:29,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9102 conditions, 1350 events. 730/1350 cut-off events. For 226296/226296 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7576 event pairs, 120 based on Foata normal form. 8/1356 useless extension candidates. Maximal degree in co-relation 8957. Up to 789 conditions per place. [2024-06-20 15:45:29,675 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 165 selfloop transitions, 106 changer transitions 12/285 dead transitions. [2024-06-20 15:45:29,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 285 transitions, 3251 flow [2024-06-20 15:45:29,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:45:29,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:45:29,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-20 15:45:29,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-20 15:45:29,676 INFO L175 Difference]: Start difference. First operand has 328 places, 261 transitions, 2607 flow. Second operand 12 states and 146 transitions. [2024-06-20 15:45:29,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 285 transitions, 3251 flow [2024-06-20 15:45:30,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 285 transitions, 3093 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 15:45:30,203 INFO L231 Difference]: Finished difference. Result has 324 places, 257 transitions, 2632 flow [2024-06-20 15:45:30,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2632, PETRI_PLACES=324, PETRI_TRANSITIONS=257} [2024-06-20 15:45:30,203 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-20 15:45:30,203 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 257 transitions, 2632 flow [2024-06-20 15:45:30,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:30,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:30,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:30,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-20 15:45:30,204 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:30,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:30,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1747634088, now seen corresponding path program 18 times [2024-06-20 15:45:30,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:30,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588223745] [2024-06-20 15:45:30,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:30,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:31,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:31,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588223745] [2024-06-20 15:45:31,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588223745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:31,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:31,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:31,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537366827] [2024-06-20 15:45:31,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:31,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:31,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:31,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:31,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:31,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 257 transitions, 2632 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:31,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:31,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:31,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:32,354 INFO L124 PetriNetUnfolderBase]: 722/1334 cut-off events. [2024-06-20 15:45:32,354 INFO L125 PetriNetUnfolderBase]: For 218614/218614 co-relation queries the response was YES. [2024-06-20 15:45:32,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9058 conditions, 1334 events. 722/1334 cut-off events. For 218614/218614 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7462 event pairs, 88 based on Foata normal form. 8/1340 useless extension candidates. Maximal degree in co-relation 8915. Up to 901 conditions per place. [2024-06-20 15:45:32,368 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 202 selfloop transitions, 75 changer transitions 8/287 dead transitions. [2024-06-20 15:45:32,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 287 transitions, 3538 flow [2024-06-20 15:45:32,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:45:32,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:45:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-20 15:45:32,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-06-20 15:45:32,369 INFO L175 Difference]: Start difference. First operand has 324 places, 257 transitions, 2632 flow. Second operand 12 states and 151 transitions. [2024-06-20 15:45:32,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 287 transitions, 3538 flow [2024-06-20 15:45:32,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 287 transitions, 3312 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-20 15:45:32,886 INFO L231 Difference]: Finished difference. Result has 318 places, 254 transitions, 2542 flow [2024-06-20 15:45:32,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2542, PETRI_PLACES=318, PETRI_TRANSITIONS=254} [2024-06-20 15:45:32,887 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-20 15:45:32,887 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 254 transitions, 2542 flow [2024-06-20 15:45:32,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:32,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:32,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:32,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-20 15:45:32,887 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:32,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:32,887 INFO L85 PathProgramCache]: Analyzing trace with hash -783548044, now seen corresponding path program 19 times [2024-06-20 15:45:32,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:32,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290874113] [2024-06-20 15:45:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:32,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:34,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:34,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290874113] [2024-06-20 15:45:34,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290874113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:34,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:34,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:34,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590244657] [2024-06-20 15:45:34,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:34,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:34,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:34,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:34,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:34,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:34,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 254 transitions, 2542 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:34,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:34,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:34,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:35,205 INFO L124 PetriNetUnfolderBase]: 690/1270 cut-off events. [2024-06-20 15:45:35,205 INFO L125 PetriNetUnfolderBase]: For 170724/170724 co-relation queries the response was YES. [2024-06-20 15:45:35,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7669 conditions, 1270 events. 690/1270 cut-off events. For 170724/170724 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7061 event pairs, 79 based on Foata normal form. 10/1278 useless extension candidates. Maximal degree in co-relation 7527. Up to 901 conditions per place. [2024-06-20 15:45:35,218 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 193 selfloop transitions, 73 changer transitions 11/279 dead transitions. [2024-06-20 15:45:35,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 279 transitions, 3188 flow [2024-06-20 15:45:35,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:45:35,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:45:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-20 15:45:35,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-20 15:45:35,219 INFO L175 Difference]: Start difference. First operand has 318 places, 254 transitions, 2542 flow. Second operand 12 states and 145 transitions. [2024-06-20 15:45:35,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 279 transitions, 3188 flow [2024-06-20 15:45:35,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 279 transitions, 3036 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 15:45:35,642 INFO L231 Difference]: Finished difference. Result has 316 places, 251 transitions, 2517 flow [2024-06-20 15:45:35,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2390, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2517, PETRI_PLACES=316, PETRI_TRANSITIONS=251} [2024-06-20 15:45:35,642 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-20 15:45:35,642 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 251 transitions, 2517 flow [2024-06-20 15:45:35,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:35,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:35,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:35,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-20 15:45:35,642 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:35,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:35,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2115681606, now seen corresponding path program 20 times [2024-06-20 15:45:35,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:35,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698591867] [2024-06-20 15:45:35,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:35,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:36,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:36,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:36,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698591867] [2024-06-20 15:45:36,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698591867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:36,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:36,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:36,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386962971] [2024-06-20 15:45:36,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:36,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:36,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:36,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:36,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:37,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:37,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 251 transitions, 2517 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:37,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:37,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:37,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:37,536 INFO L124 PetriNetUnfolderBase]: 712/1320 cut-off events. [2024-06-20 15:45:37,536 INFO L125 PetriNetUnfolderBase]: For 226602/226602 co-relation queries the response was YES. [2024-06-20 15:45:37,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9130 conditions, 1320 events. 712/1320 cut-off events. For 226602/226602 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7367 event pairs, 113 based on Foata normal form. 8/1326 useless extension candidates. Maximal degree in co-relation 8989. Up to 1032 conditions per place. [2024-06-20 15:45:37,549 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 226 selfloop transitions, 47 changer transitions 7/282 dead transitions. [2024-06-20 15:45:37,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 282 transitions, 3433 flow [2024-06-20 15:45:37,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:45:37,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:45:37,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-20 15:45:37,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-06-20 15:45:37,550 INFO L175 Difference]: Start difference. First operand has 316 places, 251 transitions, 2517 flow. Second operand 12 states and 154 transitions. [2024-06-20 15:45:37,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 282 transitions, 3433 flow [2024-06-20 15:45:38,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 282 transitions, 3279 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 15:45:38,227 INFO L231 Difference]: Finished difference. Result has 312 places, 249 transitions, 2450 flow [2024-06-20 15:45:38,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2367, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2450, PETRI_PLACES=312, PETRI_TRANSITIONS=249} [2024-06-20 15:45:38,227 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-20 15:45:38,228 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 249 transitions, 2450 flow [2024-06-20 15:45:38,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:38,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:38,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:38,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-20 15:45:38,228 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:38,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:38,229 INFO L85 PathProgramCache]: Analyzing trace with hash 219385384, now seen corresponding path program 21 times [2024-06-20 15:45:38,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:38,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241121544] [2024-06-20 15:45:38,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:38,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:40,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:40,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241121544] [2024-06-20 15:45:40,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241121544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:40,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:40,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:40,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500467464] [2024-06-20 15:45:40,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:40,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:40,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:40,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:40,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:40,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:40,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 249 transitions, 2450 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:40,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:40,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:40,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:41,398 INFO L124 PetriNetUnfolderBase]: 714/1326 cut-off events. [2024-06-20 15:45:41,398 INFO L125 PetriNetUnfolderBase]: For 245880/245880 co-relation queries the response was YES. [2024-06-20 15:45:41,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9095 conditions, 1326 events. 714/1326 cut-off events. For 245880/245880 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7417 event pairs, 121 based on Foata normal form. 12/1336 useless extension candidates. Maximal degree in co-relation 8955. Up to 1122 conditions per place. [2024-06-20 15:45:41,412 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 220 selfloop transitions, 46 changer transitions 10/278 dead transitions. [2024-06-20 15:45:41,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 278 transitions, 3126 flow [2024-06-20 15:45:41,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 15:45:41,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 15:45:41,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-20 15:45:41,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39950372208436724 [2024-06-20 15:45:41,413 INFO L175 Difference]: Start difference. First operand has 312 places, 249 transitions, 2450 flow. Second operand 13 states and 161 transitions. [2024-06-20 15:45:41,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 278 transitions, 3126 flow [2024-06-20 15:45:42,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 278 transitions, 3045 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 15:45:42,082 INFO L231 Difference]: Finished difference. Result has 313 places, 246 transitions, 2447 flow [2024-06-20 15:45:42,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2369, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2447, PETRI_PLACES=313, PETRI_TRANSITIONS=246} [2024-06-20 15:45:42,083 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-20 15:45:42,083 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 246 transitions, 2447 flow [2024-06-20 15:45:42,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:42,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:42,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:42,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-20 15:45:42,084 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:42,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:42,084 INFO L85 PathProgramCache]: Analyzing trace with hash -162158888, now seen corresponding path program 5 times [2024-06-20 15:45:42,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:42,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843038987] [2024-06-20 15:45:42,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:42,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:43,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:43,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:43,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843038987] [2024-06-20 15:45:43,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843038987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:43,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:43,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:43,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271323625] [2024-06-20 15:45:43,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:43,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:43,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:43,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:43,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:43,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:43,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 246 transitions, 2447 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:43,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:43,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:43,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:43,982 INFO L124 PetriNetUnfolderBase]: 701/1303 cut-off events. [2024-06-20 15:45:43,982 INFO L125 PetriNetUnfolderBase]: For 217216/217216 co-relation queries the response was YES. [2024-06-20 15:45:43,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9032 conditions, 1303 events. 701/1303 cut-off events. For 217216/217216 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7248 event pairs, 123 based on Foata normal form. 8/1309 useless extension candidates. Maximal degree in co-relation 8893. Up to 1201 conditions per place. [2024-06-20 15:45:43,995 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 232 selfloop transitions, 21 changer transitions 12/267 dead transitions. [2024-06-20 15:45:43,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 267 transitions, 3063 flow [2024-06-20 15:45:43,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:43,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:43,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-20 15:45:43,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-20 15:45:43,996 INFO L175 Difference]: Start difference. First operand has 313 places, 246 transitions, 2447 flow. Second operand 11 states and 126 transitions. [2024-06-20 15:45:43,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 267 transitions, 3063 flow [2024-06-20 15:45:44,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 267 transitions, 2939 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-20 15:45:44,622 INFO L231 Difference]: Finished difference. Result has 310 places, 243 transitions, 2325 flow [2024-06-20 15:45:44,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2325, PETRI_PLACES=310, PETRI_TRANSITIONS=243} [2024-06-20 15:45:44,622 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-20 15:45:44,623 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 243 transitions, 2325 flow [2024-06-20 15:45:44,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:44,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:44,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:44,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-20 15:45:44,623 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:44,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:44,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2115503976, now seen corresponding path program 22 times [2024-06-20 15:45:44,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:44,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430510433] [2024-06-20 15:45:44,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:44,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:46,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:46,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430510433] [2024-06-20 15:45:46,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430510433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:46,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:46,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:46,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332745414] [2024-06-20 15:45:46,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:46,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:46,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:46,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:46,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:46,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:46,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 243 transitions, 2325 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:46,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:46,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:46,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:46,916 INFO L124 PetriNetUnfolderBase]: 695/1293 cut-off events. [2024-06-20 15:45:46,916 INFO L125 PetriNetUnfolderBase]: For 233474/233474 co-relation queries the response was YES. [2024-06-20 15:45:46,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8851 conditions, 1293 events. 695/1293 cut-off events. For 233474/233474 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7196 event pairs, 125 based on Foata normal form. 10/1301 useless extension candidates. Maximal degree in co-relation 8711. Up to 1120 conditions per place. [2024-06-20 15:45:46,929 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 218 selfloop transitions, 38 changer transitions 11/269 dead transitions. [2024-06-20 15:45:46,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 269 transitions, 2955 flow [2024-06-20 15:45:46,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:45:46,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:45:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-20 15:45:46,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-20 15:45:46,930 INFO L175 Difference]: Start difference. First operand has 310 places, 243 transitions, 2325 flow. Second operand 12 states and 149 transitions. [2024-06-20 15:45:46,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 269 transitions, 2955 flow [2024-06-20 15:45:47,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 269 transitions, 2907 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-20 15:45:47,613 INFO L231 Difference]: Finished difference. Result has 307 places, 240 transitions, 2322 flow [2024-06-20 15:45:47,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2322, PETRI_PLACES=307, PETRI_TRANSITIONS=240} [2024-06-20 15:45:47,613 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-20 15:45:47,613 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 240 transitions, 2322 flow [2024-06-20 15:45:47,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:47,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:47,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:47,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-20 15:45:47,614 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:47,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:47,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2109010282, now seen corresponding path program 6 times [2024-06-20 15:45:47,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:47,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389152039] [2024-06-20 15:45:47,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:47,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:48,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:48,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389152039] [2024-06-20 15:45:48,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389152039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:48,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:48,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:48,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145634772] [2024-06-20 15:45:48,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:48,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:48,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:48,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:48,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:49,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:49,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 240 transitions, 2322 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:49,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:49,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:49,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:49,537 INFO L124 PetriNetUnfolderBase]: 666/1238 cut-off events. [2024-06-20 15:45:49,538 INFO L125 PetriNetUnfolderBase]: For 172836/172836 co-relation queries the response was YES. [2024-06-20 15:45:49,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8409 conditions, 1238 events. 666/1238 cut-off events. For 172836/172836 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6807 event pairs, 118 based on Foata normal form. 2/1238 useless extension candidates. Maximal degree in co-relation 8271. Up to 1047 conditions per place. [2024-06-20 15:45:49,549 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 203 selfloop transitions, 56 changer transitions 0/261 dead transitions. [2024-06-20 15:45:49,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 261 transitions, 2922 flow [2024-06-20 15:45:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-20 15:45:49,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-20 15:45:49,550 INFO L175 Difference]: Start difference. First operand has 307 places, 240 transitions, 2322 flow. Second operand 11 states and 139 transitions. [2024-06-20 15:45:49,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 261 transitions, 2922 flow [2024-06-20 15:45:50,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 261 transitions, 2838 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-20 15:45:50,126 INFO L231 Difference]: Finished difference. Result has 303 places, 241 transitions, 2380 flow [2024-06-20 15:45:50,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2238, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2380, PETRI_PLACES=303, PETRI_TRANSITIONS=241} [2024-06-20 15:45:50,126 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-20 15:45:50,126 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 241 transitions, 2380 flow [2024-06-20 15:45:50,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:50,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:50,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:50,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-20 15:45:50,126 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:50,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:50,127 INFO L85 PathProgramCache]: Analyzing trace with hash -161870588, now seen corresponding path program 7 times [2024-06-20 15:45:50,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:50,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045661126] [2024-06-20 15:45:50,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:50,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:51,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:51,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045661126] [2024-06-20 15:45:51,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045661126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:51,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:51,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:51,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817177834] [2024-06-20 15:45:51,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:51,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:51,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:51,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:51,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:51,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:51,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 241 transitions, 2380 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:51,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:51,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:51,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:52,025 INFO L124 PetriNetUnfolderBase]: 678/1266 cut-off events. [2024-06-20 15:45:52,025 INFO L125 PetriNetUnfolderBase]: For 201462/201462 co-relation queries the response was YES. [2024-06-20 15:45:52,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8558 conditions, 1266 events. 678/1266 cut-off events. For 201462/201462 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7021 event pairs, 111 based on Foata normal form. 8/1272 useless extension candidates. Maximal degree in co-relation 8421. Up to 1155 conditions per place. [2024-06-20 15:45:52,037 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 223 selfloop transitions, 22 changer transitions 15/262 dead transitions. [2024-06-20 15:45:52,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 262 transitions, 2986 flow [2024-06-20 15:45:52,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:52,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:52,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-20 15:45:52,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-20 15:45:52,038 INFO L175 Difference]: Start difference. First operand has 303 places, 241 transitions, 2380 flow. Second operand 11 states and 126 transitions. [2024-06-20 15:45:52,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 262 transitions, 2986 flow [2024-06-20 15:45:52,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 262 transitions, 2854 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-20 15:45:52,731 INFO L231 Difference]: Finished difference. Result has 305 places, 237 transitions, 2274 flow [2024-06-20 15:45:52,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2274, PETRI_PLACES=305, PETRI_TRANSITIONS=237} [2024-06-20 15:45:52,732 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-20 15:45:52,732 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 237 transitions, 2274 flow [2024-06-20 15:45:52,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:52,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:52,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:52,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-20 15:45:52,732 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:52,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:52,733 INFO L85 PathProgramCache]: Analyzing trace with hash -391855868, now seen corresponding path program 8 times [2024-06-20 15:45:52,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:52,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221140525] [2024-06-20 15:45:52,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:52,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:54,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:54,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221140525] [2024-06-20 15:45:54,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221140525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:54,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:54,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:45:54,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641045457] [2024-06-20 15:45:54,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:54,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:45:54,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:54,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:45:54,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:45:54,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:54,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 237 transitions, 2274 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:54,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:54,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:54,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:54,665 INFO L124 PetriNetUnfolderBase]: 658/1222 cut-off events. [2024-06-20 15:45:54,665 INFO L125 PetriNetUnfolderBase]: For 172439/172439 co-relation queries the response was YES. [2024-06-20 15:45:54,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8327 conditions, 1222 events. 658/1222 cut-off events. For 172439/172439 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6695 event pairs, 122 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 8189. Up to 1115 conditions per place. [2024-06-20 15:45:54,678 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 218 selfloop transitions, 36 changer transitions 0/256 dead transitions. [2024-06-20 15:45:54,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 256 transitions, 2858 flow [2024-06-20 15:45:54,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:54,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:54,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-20 15:45:54,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-20 15:45:54,680 INFO L175 Difference]: Start difference. First operand has 305 places, 237 transitions, 2274 flow. Second operand 11 states and 130 transitions. [2024-06-20 15:45:54,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 256 transitions, 2858 flow [2024-06-20 15:45:55,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 256 transitions, 2808 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-20 15:45:55,300 INFO L231 Difference]: Finished difference. Result has 300 places, 238 transitions, 2328 flow [2024-06-20 15:45:55,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2224, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2328, PETRI_PLACES=300, PETRI_TRANSITIONS=238} [2024-06-20 15:45:55,300 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-20 15:45:55,300 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 238 transitions, 2328 flow [2024-06-20 15:45:55,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:55,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:55,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:55,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-20 15:45:55,301 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:55,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:55,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2109001912, now seen corresponding path program 9 times [2024-06-20 15:45:55,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:55,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619015787] [2024-06-20 15:45:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:55,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:56,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:56,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:56,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619015787] [2024-06-20 15:45:56,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619015787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:56,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:56,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:56,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544892295] [2024-06-20 15:45:56,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:56,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:56,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:56,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:56,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:56,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:56,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 238 transitions, 2328 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:56,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:56,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:56,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:45:57,125 INFO L124 PetriNetUnfolderBase]: 698/1302 cut-off events. [2024-06-20 15:45:57,125 INFO L125 PetriNetUnfolderBase]: For 232765/232765 co-relation queries the response was YES. [2024-06-20 15:45:57,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9941 conditions, 1302 events. 698/1302 cut-off events. For 232765/232765 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7259 event pairs, 132 based on Foata normal form. 2/1302 useless extension candidates. Maximal degree in co-relation 9805. Up to 1017 conditions per place. [2024-06-20 15:45:57,138 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 204 selfloop transitions, 58 changer transitions 0/264 dead transitions. [2024-06-20 15:45:57,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 264 transitions, 3204 flow [2024-06-20 15:45:57,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:45:57,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:45:57,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-20 15:45:57,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-20 15:45:57,139 INFO L175 Difference]: Start difference. First operand has 300 places, 238 transitions, 2328 flow. Second operand 11 states and 141 transitions. [2024-06-20 15:45:57,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 264 transitions, 3204 flow [2024-06-20 15:45:57,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 264 transitions, 3110 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-20 15:45:57,937 INFO L231 Difference]: Finished difference. Result has 302 places, 240 transitions, 2412 flow [2024-06-20 15:45:57,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2412, PETRI_PLACES=302, PETRI_TRANSITIONS=240} [2024-06-20 15:45:57,938 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-20 15:45:57,938 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 240 transitions, 2412 flow [2024-06-20 15:45:57,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:57,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:45:57,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:45:57,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-20 15:45:57,938 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:45:57,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:45:57,938 INFO L85 PathProgramCache]: Analyzing trace with hash -391847498, now seen corresponding path program 10 times [2024-06-20 15:45:57,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:45:57,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059433122] [2024-06-20 15:45:57,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:45:57,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:45:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:45:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:45:59,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:45:59,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059433122] [2024-06-20 15:45:59,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059433122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:45:59,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:45:59,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:45:59,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225318060] [2024-06-20 15:45:59,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:45:59,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:45:59,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:45:59,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:45:59,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:45:59,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:45:59,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 240 transitions, 2412 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:45:59,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:45:59,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:45:59,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:00,016 INFO L124 PetriNetUnfolderBase]: 709/1323 cut-off events. [2024-06-20 15:46:00,016 INFO L125 PetriNetUnfolderBase]: For 248774/248774 co-relation queries the response was YES. [2024-06-20 15:46:00,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10400 conditions, 1323 events. 709/1323 cut-off events. For 248774/248774 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7414 event pairs, 137 based on Foata normal form. 2/1323 useless extension candidates. Maximal degree in co-relation 10263. Up to 1218 conditions per place. [2024-06-20 15:46:00,030 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 227 selfloop transitions, 31 changer transitions 0/260 dead transitions. [2024-06-20 15:46:00,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 260 transitions, 3246 flow [2024-06-20 15:46:00,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:00,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:00,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-20 15:46:00,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-20 15:46:00,031 INFO L175 Difference]: Start difference. First operand has 302 places, 240 transitions, 2412 flow. Second operand 11 states and 127 transitions. [2024-06-20 15:46:00,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 260 transitions, 3246 flow [2024-06-20 15:46:00,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 260 transitions, 3139 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-20 15:46:00,960 INFO L231 Difference]: Finished difference. Result has 306 places, 242 transitions, 2433 flow [2024-06-20 15:46:00,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2433, PETRI_PLACES=306, PETRI_TRANSITIONS=242} [2024-06-20 15:46:00,961 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 276 predicate places. [2024-06-20 15:46:00,961 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 242 transitions, 2433 flow [2024-06-20 15:46:00,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:00,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:00,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:00,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-20 15:46:00,961 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:00,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:00,961 INFO L85 PathProgramCache]: Analyzing trace with hash -392093452, now seen corresponding path program 23 times [2024-06-20 15:46:00,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:00,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367024435] [2024-06-20 15:46:00,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:00,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:02,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:02,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367024435] [2024-06-20 15:46:02,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367024435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:02,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:02,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:02,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444573968] [2024-06-20 15:46:02,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:02,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:02,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:02,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:02,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:02,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:02,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 242 transitions, 2433 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:02,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:02,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:02,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:03,077 INFO L124 PetriNetUnfolderBase]: 725/1359 cut-off events. [2024-06-20 15:46:03,077 INFO L125 PetriNetUnfolderBase]: For 298415/298415 co-relation queries the response was YES. [2024-06-20 15:46:03,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10533 conditions, 1359 events. 725/1359 cut-off events. For 298415/298415 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7705 event pairs, 151 based on Foata normal form. 10/1367 useless extension candidates. Maximal degree in co-relation 10394. Up to 1206 conditions per place. [2024-06-20 15:46:03,091 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 218 selfloop transitions, 29 changer transitions 14/263 dead transitions. [2024-06-20 15:46:03,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 263 transitions, 3033 flow [2024-06-20 15:46:03,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:03,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:03,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 15:46:03,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-20 15:46:03,092 INFO L175 Difference]: Start difference. First operand has 306 places, 242 transitions, 2433 flow. Second operand 11 states and 133 transitions. [2024-06-20 15:46:03,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 263 transitions, 3033 flow [2024-06-20 15:46:04,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 263 transitions, 2956 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-20 15:46:04,109 INFO L231 Difference]: Finished difference. Result has 310 places, 236 transitions, 2352 flow [2024-06-20 15:46:04,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2356, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2352, PETRI_PLACES=310, PETRI_TRANSITIONS=236} [2024-06-20 15:46:04,110 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-20 15:46:04,110 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 236 transitions, 2352 flow [2024-06-20 15:46:04,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:04,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:04,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:04,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-20 15:46:04,110 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:04,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:04,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1469125044, now seen corresponding path program 11 times [2024-06-20 15:46:04,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:04,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223554962] [2024-06-20 15:46:04,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:04,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:05,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:05,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223554962] [2024-06-20 15:46:05,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223554962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:05,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:05,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:05,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960399769] [2024-06-20 15:46:05,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:05,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:05,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:05,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:05,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:05,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:05,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 236 transitions, 2352 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:05,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:05,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:05,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:05,986 INFO L124 PetriNetUnfolderBase]: 702/1322 cut-off events. [2024-06-20 15:46:05,986 INFO L125 PetriNetUnfolderBase]: For 303208/303208 co-relation queries the response was YES. [2024-06-20 15:46:05,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10120 conditions, 1322 events. 702/1322 cut-off events. For 303208/303208 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7462 event pairs, 140 based on Foata normal form. 12/1332 useless extension candidates. Maximal degree in co-relation 9979. Up to 1189 conditions per place. [2024-06-20 15:46:06,000 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 221 selfloop transitions, 28 changer transitions 7/258 dead transitions. [2024-06-20 15:46:06,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 258 transitions, 2946 flow [2024-06-20 15:46:06,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:06,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:06,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 15:46:06,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-20 15:46:06,002 INFO L175 Difference]: Start difference. First operand has 310 places, 236 transitions, 2352 flow. Second operand 11 states and 133 transitions. [2024-06-20 15:46:06,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 258 transitions, 2946 flow [2024-06-20 15:46:06,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 258 transitions, 2860 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-20 15:46:06,960 INFO L231 Difference]: Finished difference. Result has 304 places, 233 transitions, 2302 flow [2024-06-20 15:46:06,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2266, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2302, PETRI_PLACES=304, PETRI_TRANSITIONS=233} [2024-06-20 15:46:06,961 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2024-06-20 15:46:06,961 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 233 transitions, 2302 flow [2024-06-20 15:46:06,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:06,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:06,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:06,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-20 15:46:06,962 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:06,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:06,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2109247866, now seen corresponding path program 24 times [2024-06-20 15:46:06,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:06,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804264150] [2024-06-20 15:46:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:06,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:08,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:08,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804264150] [2024-06-20 15:46:08,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804264150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:08,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:08,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:08,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21301112] [2024-06-20 15:46:08,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:08,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:08,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:08,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:08,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:08,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:08,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 233 transitions, 2302 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:08,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:08,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:08,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:09,323 INFO L124 PetriNetUnfolderBase]: 680/1284 cut-off events. [2024-06-20 15:46:09,324 INFO L125 PetriNetUnfolderBase]: For 253387/253387 co-relation queries the response was YES. [2024-06-20 15:46:09,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9387 conditions, 1284 events. 680/1284 cut-off events. For 253387/253387 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7236 event pairs, 126 based on Foata normal form. 10/1292 useless extension candidates. Maximal degree in co-relation 9249. Up to 1079 conditions per place. [2024-06-20 15:46:09,336 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 200 selfloop transitions, 47 changer transitions 9/258 dead transitions. [2024-06-20 15:46:09,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 258 transitions, 2906 flow [2024-06-20 15:46:09,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:09,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:09,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-20 15:46:09,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 15:46:09,337 INFO L175 Difference]: Start difference. First operand has 304 places, 233 transitions, 2302 flow. Second operand 12 states and 150 transitions. [2024-06-20 15:46:09,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 258 transitions, 2906 flow [2024-06-20 15:46:10,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 258 transitions, 2798 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-06-20 15:46:10,064 INFO L231 Difference]: Finished difference. Result has 303 places, 230 transitions, 2263 flow [2024-06-20 15:46:10,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2263, PETRI_PLACES=303, PETRI_TRANSITIONS=230} [2024-06-20 15:46:10,064 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-20 15:46:10,065 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 230 transitions, 2263 flow [2024-06-20 15:46:10,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:10,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:10,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:10,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-20 15:46:10,065 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:10,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:10,065 INFO L85 PathProgramCache]: Analyzing trace with hash 48562984, now seen corresponding path program 25 times [2024-06-20 15:46:10,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:10,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190094671] [2024-06-20 15:46:10,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:10,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:11,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:11,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190094671] [2024-06-20 15:46:11,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190094671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:11,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:11,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:11,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795245765] [2024-06-20 15:46:11,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:11,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:11,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:11,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:11,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:11,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:11,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 230 transitions, 2263 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:11,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:11,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:11,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:12,114 INFO L124 PetriNetUnfolderBase]: 695/1321 cut-off events. [2024-06-20 15:46:12,114 INFO L125 PetriNetUnfolderBase]: For 302335/302335 co-relation queries the response was YES. [2024-06-20 15:46:12,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10533 conditions, 1321 events. 695/1321 cut-off events. For 302335/302335 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7467 event pairs, 129 based on Foata normal form. 8/1327 useless extension candidates. Maximal degree in co-relation 10395. Up to 947 conditions per place. [2024-06-20 15:46:12,127 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 197 selfloop transitions, 50 changer transitions 10/259 dead transitions. [2024-06-20 15:46:12,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 259 transitions, 3099 flow [2024-06-20 15:46:12,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:12,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:12,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-20 15:46:12,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-06-20 15:46:12,128 INFO L175 Difference]: Start difference. First operand has 303 places, 230 transitions, 2263 flow. Second operand 12 states and 151 transitions. [2024-06-20 15:46:12,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 259 transitions, 3099 flow [2024-06-20 15:46:13,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 259 transitions, 2999 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 15:46:13,013 INFO L231 Difference]: Finished difference. Result has 302 places, 227 transitions, 2248 flow [2024-06-20 15:46:13,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2165, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2248, PETRI_PLACES=302, PETRI_TRANSITIONS=227} [2024-06-20 15:46:13,014 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-20 15:46:13,014 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 227 transitions, 2248 flow [2024-06-20 15:46:13,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:13,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:13,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:13,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-20 15:46:13,014 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:13,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:13,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1936535148, now seen corresponding path program 26 times [2024-06-20 15:46:13,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:13,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23914656] [2024-06-20 15:46:13,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:13,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:14,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:14,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:14,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23914656] [2024-06-20 15:46:14,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23914656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:14,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:14,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:46:14,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926981838] [2024-06-20 15:46:14,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:14,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:46:14,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:14,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:46:14,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:46:14,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:14,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 227 transitions, 2248 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:14,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:14,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:14,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:14,728 INFO L124 PetriNetUnfolderBase]: 729/1395 cut-off events. [2024-06-20 15:46:14,728 INFO L125 PetriNetUnfolderBase]: For 391159/391159 co-relation queries the response was YES. [2024-06-20 15:46:14,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12461 conditions, 1395 events. 729/1395 cut-off events. For 391159/391159 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8065 event pairs, 179 based on Foata normal form. 8/1401 useless extension candidates. Maximal degree in co-relation 12323. Up to 1170 conditions per place. [2024-06-20 15:46:14,741 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 219 selfloop transitions, 24 changer transitions 8/253 dead transitions. [2024-06-20 15:46:14,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 253 transitions, 3064 flow [2024-06-20 15:46:14,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:14,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 15:46:14,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 15:46:14,742 INFO L175 Difference]: Start difference. First operand has 302 places, 227 transitions, 2248 flow. Second operand 11 states and 135 transitions. [2024-06-20 15:46:14,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 253 transitions, 3064 flow [2024-06-20 15:46:15,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 253 transitions, 2963 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-20 15:46:15,803 INFO L231 Difference]: Finished difference. Result has 298 places, 224 transitions, 2174 flow [2024-06-20 15:46:15,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2153, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2174, PETRI_PLACES=298, PETRI_TRANSITIONS=224} [2024-06-20 15:46:15,803 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-20 15:46:15,803 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 224 transitions, 2174 flow [2024-06-20 15:46:15,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:15,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:15,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:15,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-20 15:46:15,803 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:15,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:15,804 INFO L85 PathProgramCache]: Analyzing trace with hash -398349562, now seen corresponding path program 27 times [2024-06-20 15:46:15,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:15,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466482274] [2024-06-20 15:46:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:15,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:17,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:17,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466482274] [2024-06-20 15:46:17,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466482274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:17,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:17,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:17,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856206746] [2024-06-20 15:46:17,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:17,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:17,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:17,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:17,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:17,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:17,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 224 transitions, 2174 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:17,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:17,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:17,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:18,097 INFO L124 PetriNetUnfolderBase]: 697/1331 cut-off events. [2024-06-20 15:46:18,098 INFO L125 PetriNetUnfolderBase]: For 333509/333509 co-relation queries the response was YES. [2024-06-20 15:46:18,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11049 conditions, 1331 events. 697/1331 cut-off events. For 333509/333509 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7574 event pairs, 162 based on Foata normal form. 10/1339 useless extension candidates. Maximal degree in co-relation 10913. Up to 1213 conditions per place. [2024-06-20 15:46:18,111 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 211 selfloop transitions, 23 changer transitions 11/247 dead transitions. [2024-06-20 15:46:18,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 247 transitions, 2748 flow [2024-06-20 15:46:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:18,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:18,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-20 15:46:18,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-20 15:46:18,112 INFO L175 Difference]: Start difference. First operand has 298 places, 224 transitions, 2174 flow. Second operand 12 states and 137 transitions. [2024-06-20 15:46:18,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 247 transitions, 2748 flow [2024-06-20 15:46:19,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 247 transitions, 2696 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 15:46:19,122 INFO L231 Difference]: Finished difference. Result has 297 places, 221 transitions, 2135 flow [2024-06-20 15:46:19,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2122, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2135, PETRI_PLACES=297, PETRI_TRANSITIONS=221} [2024-06-20 15:46:19,122 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-20 15:46:19,122 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 221 transitions, 2135 flow [2024-06-20 15:46:19,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:19,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:19,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:19,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-20 15:46:19,123 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:19,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:19,123 INFO L85 PathProgramCache]: Analyzing trace with hash 2008587910, now seen corresponding path program 28 times [2024-06-20 15:46:19,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:19,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578983648] [2024-06-20 15:46:19,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:19,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:20,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:20,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578983648] [2024-06-20 15:46:20,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578983648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:20,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:20,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:20,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122211647] [2024-06-20 15:46:20,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:20,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:20,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:20,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:20,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:20,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:20,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 221 transitions, 2135 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:20,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:20,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:20,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:21,119 INFO L124 PetriNetUnfolderBase]: 687/1317 cut-off events. [2024-06-20 15:46:21,119 INFO L125 PetriNetUnfolderBase]: For 327265/327265 co-relation queries the response was YES. [2024-06-20 15:46:21,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10900 conditions, 1317 events. 687/1317 cut-off events. For 327265/327265 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7518 event pairs, 144 based on Foata normal form. 10/1325 useless extension candidates. Maximal degree in co-relation 10765. Up to 1122 conditions per place. [2024-06-20 15:46:21,131 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 188 selfloop transitions, 44 changer transitions 11/245 dead transitions. [2024-06-20 15:46:21,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 245 transitions, 2709 flow [2024-06-20 15:46:21,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:21,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-20 15:46:21,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-20 15:46:21,132 INFO L175 Difference]: Start difference. First operand has 297 places, 221 transitions, 2135 flow. Second operand 12 states and 147 transitions. [2024-06-20 15:46:21,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 245 transitions, 2709 flow [2024-06-20 15:46:22,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 245 transitions, 2659 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 15:46:22,147 INFO L231 Difference]: Finished difference. Result has 295 places, 218 transitions, 2152 flow [2024-06-20 15:46:22,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2152, PETRI_PLACES=295, PETRI_TRANSITIONS=218} [2024-06-20 15:46:22,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-20 15:46:22,147 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 218 transitions, 2152 flow [2024-06-20 15:46:22,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:22,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:22,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:22,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-20 15:46:22,148 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:22,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:22,148 INFO L85 PathProgramCache]: Analyzing trace with hash 212814606, now seen corresponding path program 29 times [2024-06-20 15:46:22,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:22,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131308679] [2024-06-20 15:46:22,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:22,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:23,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:23,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:23,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131308679] [2024-06-20 15:46:23,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131308679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:23,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:23,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:46:23,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400752641] [2024-06-20 15:46:23,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:23,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:46:23,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:23,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:46:23,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:46:23,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:23,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 218 transitions, 2152 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:23,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:23,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:23,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:23,950 INFO L124 PetriNetUnfolderBase]: 690/1330 cut-off events. [2024-06-20 15:46:23,950 INFO L125 PetriNetUnfolderBase]: For 339983/339983 co-relation queries the response was YES. [2024-06-20 15:46:23,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11511 conditions, 1330 events. 690/1330 cut-off events. For 339983/339983 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7598 event pairs, 165 based on Foata normal form. 8/1336 useless extension candidates. Maximal degree in co-relation 11377. Up to 980 conditions per place. [2024-06-20 15:46:23,964 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 200 selfloop transitions, 33 changer transitions 10/245 dead transitions. [2024-06-20 15:46:23,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 245 transitions, 2948 flow [2024-06-20 15:46:23,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:23,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-20 15:46:23,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-20 15:46:23,965 INFO L175 Difference]: Start difference. First operand has 295 places, 218 transitions, 2152 flow. Second operand 11 states and 140 transitions. [2024-06-20 15:46:23,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 245 transitions, 2948 flow [2024-06-20 15:46:24,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 245 transitions, 2852 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 15:46:24,969 INFO L231 Difference]: Finished difference. Result has 292 places, 213 transitions, 2081 flow [2024-06-20 15:46:24,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2081, PETRI_PLACES=292, PETRI_TRANSITIONS=213} [2024-06-20 15:46:24,969 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-20 15:46:24,969 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 213 transitions, 2081 flow [2024-06-20 15:46:24,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:24,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:24,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:24,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-20 15:46:24,970 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:24,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:24,970 INFO L85 PathProgramCache]: Analyzing trace with hash 217287906, now seen corresponding path program 30 times [2024-06-20 15:46:24,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:24,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599036526] [2024-06-20 15:46:24,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:24,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:26,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:26,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599036526] [2024-06-20 15:46:26,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599036526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:26,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:26,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:26,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281822376] [2024-06-20 15:46:26,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:26,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:26,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:26,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:26,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:26,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:26,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 213 transitions, 2081 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:26,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:26,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:26,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:27,162 INFO L124 PetriNetUnfolderBase]: 655/1261 cut-off events. [2024-06-20 15:46:27,162 INFO L125 PetriNetUnfolderBase]: For 292972/292972 co-relation queries the response was YES. [2024-06-20 15:46:27,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10180 conditions, 1261 events. 655/1261 cut-off events. For 292972/292972 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7113 event pairs, 146 based on Foata normal form. 10/1269 useless extension candidates. Maximal degree in co-relation 10047. Up to 1078 conditions per place. [2024-06-20 15:46:27,174 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 186 selfloop transitions, 38 changer transitions 12/238 dead transitions. [2024-06-20 15:46:27,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 238 transitions, 2645 flow [2024-06-20 15:46:27,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:27,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:27,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-20 15:46:27,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-20 15:46:27,175 INFO L175 Difference]: Start difference. First operand has 292 places, 213 transitions, 2081 flow. Second operand 12 states and 147 transitions. [2024-06-20 15:46:27,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 238 transitions, 2645 flow [2024-06-20 15:46:27,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 238 transitions, 2552 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-20 15:46:27,974 INFO L231 Difference]: Finished difference. Result has 287 places, 209 transitions, 2030 flow [2024-06-20 15:46:27,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2030, PETRI_PLACES=287, PETRI_TRANSITIONS=209} [2024-06-20 15:46:27,975 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 257 predicate places. [2024-06-20 15:46:27,975 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 209 transitions, 2030 flow [2024-06-20 15:46:27,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:27,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:27,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:27,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-20 15:46:27,975 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:27,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:27,975 INFO L85 PathProgramCache]: Analyzing trace with hash 53324584, now seen corresponding path program 31 times [2024-06-20 15:46:27,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:27,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844296249] [2024-06-20 15:46:27,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:27,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:29,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:29,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:29,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844296249] [2024-06-20 15:46:29,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844296249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:29,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:29,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:29,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028721062] [2024-06-20 15:46:29,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:29,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:29,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:29,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:29,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:29,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:29,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 209 transitions, 2030 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:29,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:29,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:29,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:30,293 INFO L124 PetriNetUnfolderBase]: 617/1187 cut-off events. [2024-06-20 15:46:30,293 INFO L125 PetriNetUnfolderBase]: For 237537/237537 co-relation queries the response was YES. [2024-06-20 15:46:30,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8858 conditions, 1187 events. 617/1187 cut-off events. For 237537/237537 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6595 event pairs, 137 based on Foata normal form. 10/1195 useless extension candidates. Maximal degree in co-relation 8726. Up to 1028 conditions per place. [2024-06-20 15:46:30,305 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 190 selfloop transitions, 30 changer transitions 11/233 dead transitions. [2024-06-20 15:46:30,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 233 transitions, 2580 flow [2024-06-20 15:46:30,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:30,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:30,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-20 15:46:30,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-20 15:46:30,306 INFO L175 Difference]: Start difference. First operand has 287 places, 209 transitions, 2030 flow. Second operand 12 states and 141 transitions. [2024-06-20 15:46:30,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 233 transitions, 2580 flow [2024-06-20 15:46:30,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 233 transitions, 2495 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-20 15:46:30,887 INFO L231 Difference]: Finished difference. Result has 283 places, 206 transitions, 1977 flow [2024-06-20 15:46:30,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1945, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1977, PETRI_PLACES=283, PETRI_TRANSITIONS=206} [2024-06-20 15:46:30,887 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2024-06-20 15:46:30,887 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 206 transitions, 1977 flow [2024-06-20 15:46:30,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:30,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:30,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:30,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-20 15:46:30,888 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:30,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:30,888 INFO L85 PathProgramCache]: Analyzing trace with hash 217467830, now seen corresponding path program 12 times [2024-06-20 15:46:30,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:30,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970421307] [2024-06-20 15:46:30,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:30,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:32,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:32,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:32,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970421307] [2024-06-20 15:46:32,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970421307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:32,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:32,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:32,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697557715] [2024-06-20 15:46:32,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:32,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:32,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:32,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:32,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:32,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:32,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 206 transitions, 1977 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:32,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:32,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:32,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:32,918 INFO L124 PetriNetUnfolderBase]: 588/1132 cut-off events. [2024-06-20 15:46:32,918 INFO L125 PetriNetUnfolderBase]: For 184847/184847 co-relation queries the response was YES. [2024-06-20 15:46:32,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8357 conditions, 1132 events. 588/1132 cut-off events. For 184847/184847 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6230 event pairs, 124 based on Foata normal form. 2/1132 useless extension candidates. Maximal degree in co-relation 8226. Up to 1017 conditions per place. [2024-06-20 15:46:32,928 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 191 selfloop transitions, 31 changer transitions 0/224 dead transitions. [2024-06-20 15:46:32,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 224 transitions, 2471 flow [2024-06-20 15:46:32,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:32,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:32,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-20 15:46:32,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-20 15:46:32,928 INFO L175 Difference]: Start difference. First operand has 283 places, 206 transitions, 1977 flow. Second operand 11 states and 127 transitions. [2024-06-20 15:46:32,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 224 transitions, 2471 flow [2024-06-20 15:46:33,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 224 transitions, 2397 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-20 15:46:33,531 INFO L231 Difference]: Finished difference. Result has 279 places, 206 transitions, 1969 flow [2024-06-20 15:46:33,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1969, PETRI_PLACES=279, PETRI_TRANSITIONS=206} [2024-06-20 15:46:33,532 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-20 15:46:33,532 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 206 transitions, 1969 flow [2024-06-20 15:46:33,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:33,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:33,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:33,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-20 15:46:33,532 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:33,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:33,533 INFO L85 PathProgramCache]: Analyzing trace with hash -452201558, now seen corresponding path program 13 times [2024-06-20 15:46:33,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:33,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769841303] [2024-06-20 15:46:33,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:33,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:34,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:34,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769841303] [2024-06-20 15:46:34,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769841303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:34,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:34,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:34,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256993430] [2024-06-20 15:46:34,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:34,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:34,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:34,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:34,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:35,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:35,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 206 transitions, 1969 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:35,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:35,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:35,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:35,560 INFO L124 PetriNetUnfolderBase]: 608/1176 cut-off events. [2024-06-20 15:46:35,561 INFO L125 PetriNetUnfolderBase]: For 229016/229016 co-relation queries the response was YES. [2024-06-20 15:46:35,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8500 conditions, 1176 events. 608/1176 cut-off events. For 229016/229016 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6557 event pairs, 134 based on Foata normal form. 12/1186 useless extension candidates. Maximal degree in co-relation 8370. Up to 1046 conditions per place. [2024-06-20 15:46:35,569 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 191 selfloop transitions, 26 changer transitions 7/226 dead transitions. [2024-06-20 15:46:35,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 226 transitions, 2519 flow [2024-06-20 15:46:35,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:35,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:35,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-20 15:46:35,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-20 15:46:35,570 INFO L175 Difference]: Start difference. First operand has 279 places, 206 transitions, 1969 flow. Second operand 11 states and 127 transitions. [2024-06-20 15:46:35,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 226 transitions, 2519 flow [2024-06-20 15:46:36,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 226 transitions, 2447 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 15:46:36,196 INFO L231 Difference]: Finished difference. Result has 280 places, 204 transitions, 1964 flow [2024-06-20 15:46:36,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1964, PETRI_PLACES=280, PETRI_TRANSITIONS=204} [2024-06-20 15:46:36,197 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-06-20 15:46:36,197 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 204 transitions, 1964 flow [2024-06-20 15:46:36,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:36,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:36,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:36,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-20 15:46:36,197 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:36,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:36,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1391739996, now seen corresponding path program 32 times [2024-06-20 15:46:36,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:36,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358111558] [2024-06-20 15:46:36,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:36,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:37,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:37,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358111558] [2024-06-20 15:46:37,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358111558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:37,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:37,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:37,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976878673] [2024-06-20 15:46:37,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:37,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:37,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:37,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:37,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:37,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:37,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 204 transitions, 1964 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:37,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:37,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:37,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:38,158 INFO L124 PetriNetUnfolderBase]: 631/1225 cut-off events. [2024-06-20 15:46:38,159 INFO L125 PetriNetUnfolderBase]: For 262948/262948 co-relation queries the response was YES. [2024-06-20 15:46:38,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9660 conditions, 1225 events. 631/1225 cut-off events. For 262948/262948 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6893 event pairs, 119 based on Foata normal form. 8/1231 useless extension candidates. Maximal degree in co-relation 9529. Up to 864 conditions per place. [2024-06-20 15:46:38,170 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 147 selfloop transitions, 76 changer transitions 7/232 dead transitions. [2024-06-20 15:46:38,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 232 transitions, 2740 flow [2024-06-20 15:46:38,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:38,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:38,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-20 15:46:38,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-20 15:46:38,171 INFO L175 Difference]: Start difference. First operand has 280 places, 204 transitions, 1964 flow. Second operand 12 states and 145 transitions. [2024-06-20 15:46:38,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 232 transitions, 2740 flow [2024-06-20 15:46:38,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 232 transitions, 2659 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-20 15:46:38,981 INFO L231 Difference]: Finished difference. Result has 282 places, 204 transitions, 2035 flow [2024-06-20 15:46:38,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1883, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2035, PETRI_PLACES=282, PETRI_TRANSITIONS=204} [2024-06-20 15:46:38,982 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-20 15:46:38,982 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 204 transitions, 2035 flow [2024-06-20 15:46:38,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:38,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:38,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:38,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-20 15:46:38,982 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:38,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:38,983 INFO L85 PathProgramCache]: Analyzing trace with hash -355496630, now seen corresponding path program 33 times [2024-06-20 15:46:38,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:38,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585321757] [2024-06-20 15:46:38,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:38,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:40,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:40,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585321757] [2024-06-20 15:46:40,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585321757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:40,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:40,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:46:40,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491530483] [2024-06-20 15:46:40,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:40,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:46:40,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:40,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:46:40,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:46:40,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:40,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 204 transitions, 2035 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:40,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:40,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:40,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:40,724 INFO L124 PetriNetUnfolderBase]: 661/1287 cut-off events. [2024-06-20 15:46:40,724 INFO L125 PetriNetUnfolderBase]: For 328038/328038 co-relation queries the response was YES. [2024-06-20 15:46:40,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11263 conditions, 1287 events. 661/1287 cut-off events. For 328038/328038 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7308 event pairs, 161 based on Foata normal form. 8/1293 useless extension candidates. Maximal degree in co-relation 11131. Up to 1077 conditions per place. [2024-06-20 15:46:40,737 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 196 selfloop transitions, 22 changer transitions 8/228 dead transitions. [2024-06-20 15:46:40,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 228 transitions, 2811 flow [2024-06-20 15:46:40,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:40,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-20 15:46:40,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-20 15:46:40,738 INFO L175 Difference]: Start difference. First operand has 282 places, 204 transitions, 2035 flow. Second operand 11 states and 129 transitions. [2024-06-20 15:46:40,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 228 transitions, 2811 flow [2024-06-20 15:46:41,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 228 transitions, 2667 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-20 15:46:41,674 INFO L231 Difference]: Finished difference. Result has 282 places, 201 transitions, 1910 flow [2024-06-20 15:46:41,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1910, PETRI_PLACES=282, PETRI_TRANSITIONS=201} [2024-06-20 15:46:41,675 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-20 15:46:41,675 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 201 transitions, 1910 flow [2024-06-20 15:46:41,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:41,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:41,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:41,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-20 15:46:41,675 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:41,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:41,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2000212218, now seen corresponding path program 14 times [2024-06-20 15:46:41,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:41,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469893595] [2024-06-20 15:46:41,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:41,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:42,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:42,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:42,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469893595] [2024-06-20 15:46:42,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469893595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:42,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:42,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:42,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948908399] [2024-06-20 15:46:42,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:42,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:42,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:42,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:42,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:42,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:42,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 201 transitions, 1910 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:42,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:42,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:42,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:43,360 INFO L124 PetriNetUnfolderBase]: 690/1346 cut-off events. [2024-06-20 15:46:43,361 INFO L125 PetriNetUnfolderBase]: For 386570/386570 co-relation queries the response was YES. [2024-06-20 15:46:43,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12641 conditions, 1346 events. 690/1346 cut-off events. For 386570/386570 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7782 event pairs, 187 based on Foata normal form. 8/1352 useless extension candidates. Maximal degree in co-relation 12510. Up to 1158 conditions per place. [2024-06-20 15:46:43,374 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 192 selfloop transitions, 22 changer transitions 8/224 dead transitions. [2024-06-20 15:46:43,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 224 transitions, 2700 flow [2024-06-20 15:46:43,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:43,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:43,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-20 15:46:43,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-20 15:46:43,375 INFO L175 Difference]: Start difference. First operand has 282 places, 201 transitions, 1910 flow. Second operand 11 states and 127 transitions. [2024-06-20 15:46:43,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 224 transitions, 2700 flow [2024-06-20 15:46:44,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 224 transitions, 2642 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-20 15:46:44,447 INFO L231 Difference]: Finished difference. Result has 279 places, 198 transitions, 1881 flow [2024-06-20 15:46:44,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1881, PETRI_PLACES=279, PETRI_TRANSITIONS=198} [2024-06-20 15:46:44,448 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-20 15:46:44,448 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 198 transitions, 1881 flow [2024-06-20 15:46:44,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:44,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:44,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:44,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-20 15:46:44,448 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:44,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:44,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1947938230, now seen corresponding path program 34 times [2024-06-20 15:46:44,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:44,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577196482] [2024-06-20 15:46:44,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:44,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:46,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:46,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577196482] [2024-06-20 15:46:46,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577196482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:46,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:46,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:46,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087993115] [2024-06-20 15:46:46,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:46,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:46,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:46,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:46,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:46,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:46,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 198 transitions, 1881 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:46,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:46,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:46,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:47,010 INFO L124 PetriNetUnfolderBase]: 686/1342 cut-off events. [2024-06-20 15:46:47,010 INFO L125 PetriNetUnfolderBase]: For 380348/380348 co-relation queries the response was YES. [2024-06-20 15:46:47,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12425 conditions, 1342 events. 686/1342 cut-off events. For 380348/380348 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7748 event pairs, 195 based on Foata normal form. 10/1350 useless extension candidates. Maximal degree in co-relation 12296. Up to 1235 conditions per place. [2024-06-20 15:46:47,024 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 186 selfloop transitions, 20 changer transitions 11/219 dead transitions. [2024-06-20 15:46:47,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 219 transitions, 2393 flow [2024-06-20 15:46:47,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-20 15:46:47,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-20 15:46:47,032 INFO L175 Difference]: Start difference. First operand has 279 places, 198 transitions, 1881 flow. Second operand 12 states and 134 transitions. [2024-06-20 15:46:47,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 219 transitions, 2393 flow [2024-06-20 15:46:48,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 219 transitions, 2351 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 15:46:48,191 INFO L231 Difference]: Finished difference. Result has 279 places, 195 transitions, 1849 flow [2024-06-20 15:46:48,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1839, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1849, PETRI_PLACES=279, PETRI_TRANSITIONS=195} [2024-06-20 15:46:48,191 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-20 15:46:48,191 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 195 transitions, 1849 flow [2024-06-20 15:46:48,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:48,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:48,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:48,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-20 15:46:48,192 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:48,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:48,192 INFO L85 PathProgramCache]: Analyzing trace with hash -348825306, now seen corresponding path program 15 times [2024-06-20 15:46:48,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:48,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176148715] [2024-06-20 15:46:48,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:48,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:49,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:49,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176148715] [2024-06-20 15:46:49,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176148715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:49,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:49,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:49,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839049550] [2024-06-20 15:46:49,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:49,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:49,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:49,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:49,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:49,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:49,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 195 transitions, 1849 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:49,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:49,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:49,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:50,260 INFO L124 PetriNetUnfolderBase]: 657/1287 cut-off events. [2024-06-20 15:46:50,260 INFO L125 PetriNetUnfolderBase]: For 325931/325931 co-relation queries the response was YES. [2024-06-20 15:46:50,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11928 conditions, 1287 events. 657/1287 cut-off events. For 325931/325931 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7365 event pairs, 190 based on Foata normal form. 2/1287 useless extension candidates. Maximal degree in co-relation 11800. Up to 1224 conditions per place. [2024-06-20 15:46:50,275 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 188 selfloop transitions, 21 changer transitions 0/211 dead transitions. [2024-06-20 15:46:50,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 211 transitions, 2337 flow [2024-06-20 15:46:50,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:50,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:50,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-20 15:46:50,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-20 15:46:50,276 INFO L175 Difference]: Start difference. First operand has 279 places, 195 transitions, 1849 flow. Second operand 11 states and 120 transitions. [2024-06-20 15:46:50,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 211 transitions, 2337 flow [2024-06-20 15:46:51,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 211 transitions, 2293 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-20 15:46:51,256 INFO L231 Difference]: Finished difference. Result has 276 places, 196 transitions, 1883 flow [2024-06-20 15:46:51,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1805, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1883, PETRI_PLACES=276, PETRI_TRANSITIONS=196} [2024-06-20 15:46:51,256 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-20 15:46:51,257 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 196 transitions, 1883 flow [2024-06-20 15:46:51,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:51,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:51,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:51,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-20 15:46:51,257 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:51,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:51,258 INFO L85 PathProgramCache]: Analyzing trace with hash -348816936, now seen corresponding path program 16 times [2024-06-20 15:46:51,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:51,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827347392] [2024-06-20 15:46:51,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:51,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:52,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:52,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827347392] [2024-06-20 15:46:52,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827347392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:52,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:52,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:52,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256949521] [2024-06-20 15:46:52,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:52,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:52,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:52,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:52,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:52,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:52,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 196 transitions, 1883 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:52,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:52,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:52,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:53,106 INFO L124 PetriNetUnfolderBase]: 661/1295 cut-off events. [2024-06-20 15:46:53,106 INFO L125 PetriNetUnfolderBase]: For 319802/319802 co-relation queries the response was YES. [2024-06-20 15:46:53,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11955 conditions, 1295 events. 661/1295 cut-off events. For 319802/319802 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7426 event pairs, 188 based on Foata normal form. 2/1295 useless extension candidates. Maximal degree in co-relation 11828. Up to 1204 conditions per place. [2024-06-20 15:46:53,118 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 185 selfloop transitions, 25 changer transitions 0/212 dead transitions. [2024-06-20 15:46:53,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 212 transitions, 2373 flow [2024-06-20 15:46:53,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:53,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:53,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-20 15:46:53,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-20 15:46:53,119 INFO L175 Difference]: Start difference. First operand has 276 places, 196 transitions, 1883 flow. Second operand 11 states and 122 transitions. [2024-06-20 15:46:53,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 212 transitions, 2373 flow [2024-06-20 15:46:54,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 212 transitions, 2305 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-20 15:46:54,176 INFO L231 Difference]: Finished difference. Result has 278 places, 197 transitions, 1903 flow [2024-06-20 15:46:54,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1903, PETRI_PLACES=278, PETRI_TRANSITIONS=197} [2024-06-20 15:46:54,177 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2024-06-20 15:46:54,177 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 197 transitions, 1903 flow [2024-06-20 15:46:54,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:54,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:54,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:54,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-20 15:46:54,177 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:54,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:54,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1941682120, now seen corresponding path program 35 times [2024-06-20 15:46:54,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:54,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924185877] [2024-06-20 15:46:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:54,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:56,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:56,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924185877] [2024-06-20 15:46:56,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924185877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:56,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:56,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:56,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525486795] [2024-06-20 15:46:56,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:56,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:56,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:56,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:56,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:56,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:56,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 197 transitions, 1903 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:56,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:56,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:56,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:57,013 INFO L124 PetriNetUnfolderBase]: 663/1305 cut-off events. [2024-06-20 15:46:57,013 INFO L125 PetriNetUnfolderBase]: For 344203/344203 co-relation queries the response was YES. [2024-06-20 15:46:57,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11638 conditions, 1305 events. 663/1305 cut-off events. For 344203/344203 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7516 event pairs, 182 based on Foata normal form. 10/1313 useless extension candidates. Maximal degree in co-relation 11510. Up to 1173 conditions per place. [2024-06-20 15:46:57,025 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 181 selfloop transitions, 24 changer transitions 11/218 dead transitions. [2024-06-20 15:46:57,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 218 transitions, 2413 flow [2024-06-20 15:46:57,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:46:57,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:46:57,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-20 15:46:57,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-20 15:46:57,026 INFO L175 Difference]: Start difference. First operand has 278 places, 197 transitions, 1903 flow. Second operand 12 states and 135 transitions. [2024-06-20 15:46:57,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 218 transitions, 2413 flow [2024-06-20 15:46:58,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 218 transitions, 2335 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-20 15:46:58,055 INFO L231 Difference]: Finished difference. Result has 281 places, 194 transitions, 1845 flow [2024-06-20 15:46:58,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1845, PETRI_PLACES=281, PETRI_TRANSITIONS=194} [2024-06-20 15:46:58,055 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-20 15:46:58,055 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 194 transitions, 1845 flow [2024-06-20 15:46:58,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:58,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:46:58,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:46:58,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-20 15:46:58,055 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:46:58,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:46:58,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2000203848, now seen corresponding path program 17 times [2024-06-20 15:46:58,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:46:58,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211056513] [2024-06-20 15:46:58,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:46:58,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:46:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:46:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:46:59,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:46:59,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211056513] [2024-06-20 15:46:59,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211056513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:46:59,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:46:59,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:46:59,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473430206] [2024-06-20 15:46:59,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:46:59,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:46:59,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:46:59,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:46:59,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:46:59,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:46:59,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 194 transitions, 1845 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:46:59,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:46:59,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:46:59,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:46:59,832 INFO L124 PetriNetUnfolderBase]: 621/1227 cut-off events. [2024-06-20 15:46:59,833 INFO L125 PetriNetUnfolderBase]: For 305110/305110 co-relation queries the response was YES. [2024-06-20 15:46:59,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10149 conditions, 1227 events. 621/1227 cut-off events. For 305110/305110 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7001 event pairs, 168 based on Foata normal form. 12/1237 useless extension candidates. Maximal degree in co-relation 10020. Up to 1107 conditions per place. [2024-06-20 15:46:59,844 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 174 selfloop transitions, 14 changer transitions 23/213 dead transitions. [2024-06-20 15:46:59,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 213 transitions, 2369 flow [2024-06-20 15:46:59,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:46:59,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:46:59,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-20 15:46:59,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-20 15:46:59,845 INFO L175 Difference]: Start difference. First operand has 281 places, 194 transitions, 1845 flow. Second operand 11 states and 122 transitions. [2024-06-20 15:46:59,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 213 transitions, 2369 flow [2024-06-20 15:47:00,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 213 transitions, 2325 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 15:47:00,574 INFO L231 Difference]: Finished difference. Result has 279 places, 182 transitions, 1714 flow [2024-06-20 15:47:00,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1714, PETRI_PLACES=279, PETRI_TRANSITIONS=182} [2024-06-20 15:47:00,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-20 15:47:00,575 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 182 transitions, 1714 flow [2024-06-20 15:47:00,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:00,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:00,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:00,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-20 15:47:00,575 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:00,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:00,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1723444218, now seen corresponding path program 18 times [2024-06-20 15:47:00,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:00,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087646955] [2024-06-20 15:47:00,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:00,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:01,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:01,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:01,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087646955] [2024-06-20 15:47:01,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087646955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:01,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:01,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:01,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894265371] [2024-06-20 15:47:01,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:01,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:01,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:01,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:01,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:01,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:01,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 182 transitions, 1714 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:01,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:01,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:01,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:02,448 INFO L124 PetriNetUnfolderBase]: 584/1164 cut-off events. [2024-06-20 15:47:02,448 INFO L125 PetriNetUnfolderBase]: For 277933/277933 co-relation queries the response was YES. [2024-06-20 15:47:02,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9780 conditions, 1164 events. 584/1164 cut-off events. For 277933/277933 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6603 event pairs, 162 based on Foata normal form. 8/1170 useless extension candidates. Maximal degree in co-relation 9652. Up to 1087 conditions per place. [2024-06-20 15:47:02,458 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 170 selfloop transitions, 10 changer transitions 17/199 dead transitions. [2024-06-20 15:47:02,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 199 transitions, 2188 flow [2024-06-20 15:47:02,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:02,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:02,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-20 15:47:02,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-20 15:47:02,459 INFO L175 Difference]: Start difference. First operand has 279 places, 182 transitions, 1714 flow. Second operand 11 states and 117 transitions. [2024-06-20 15:47:02,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 199 transitions, 2188 flow [2024-06-20 15:47:03,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 199 transitions, 1864 flow, removed 9 selfloop flow, removed 20 redundant places. [2024-06-20 15:47:03,217 INFO L231 Difference]: Finished difference. Result has 264 places, 176 transitions, 1378 flow [2024-06-20 15:47:03,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1378, PETRI_PLACES=264, PETRI_TRANSITIONS=176} [2024-06-20 15:47:03,218 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-20 15:47:03,218 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 176 transitions, 1378 flow [2024-06-20 15:47:03,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:03,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:03,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:03,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-20 15:47:03,218 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:03,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:03,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1711747556, now seen corresponding path program 19 times [2024-06-20 15:47:03,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:03,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480687829] [2024-06-20 15:47:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:03,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:04,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:04,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480687829] [2024-06-20 15:47:04,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480687829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:04,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:04,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:04,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828386157] [2024-06-20 15:47:04,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:04,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:04,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:04,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:04,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:04,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:04,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 176 transitions, 1378 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:04,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:04,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:04,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:05,076 INFO L124 PetriNetUnfolderBase]: 569/1135 cut-off events. [2024-06-20 15:47:05,076 INFO L125 PetriNetUnfolderBase]: For 271278/271278 co-relation queries the response was YES. [2024-06-20 15:47:05,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9087 conditions, 1135 events. 569/1135 cut-off events. For 271278/271278 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6387 event pairs, 160 based on Foata normal form. 8/1141 useless extension candidates. Maximal degree in co-relation 8966. Up to 1063 conditions per place. [2024-06-20 15:47:05,086 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 167 selfloop transitions, 12 changer transitions 12/193 dead transitions. [2024-06-20 15:47:05,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 193 transitions, 1836 flow [2024-06-20 15:47:05,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:05,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-20 15:47:05,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-20 15:47:05,087 INFO L175 Difference]: Start difference. First operand has 264 places, 176 transitions, 1378 flow. Second operand 11 states and 118 transitions. [2024-06-20 15:47:05,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 193 transitions, 1836 flow [2024-06-20 15:47:05,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 193 transitions, 1790 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-20 15:47:05,717 INFO L231 Difference]: Finished difference. Result has 256 places, 173 transitions, 1335 flow [2024-06-20 15:47:05,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1335, PETRI_PLACES=256, PETRI_TRANSITIONS=173} [2024-06-20 15:47:05,717 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-20 15:47:05,717 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 173 transitions, 1335 flow [2024-06-20 15:47:05,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:05,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:05,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:05,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-20 15:47:05,718 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:05,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:05,718 INFO L85 PathProgramCache]: Analyzing trace with hash 461268228, now seen corresponding path program 20 times [2024-06-20 15:47:05,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:05,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416804435] [2024-06-20 15:47:05,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:05,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:06,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:06,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:06,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416804435] [2024-06-20 15:47:06,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416804435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:06,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:06,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:06,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644366506] [2024-06-20 15:47:06,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:06,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:06,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:06,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:06,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:07,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:07,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 173 transitions, 1335 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:07,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:07,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:07,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:07,475 INFO L124 PetriNetUnfolderBase]: 551/1097 cut-off events. [2024-06-20 15:47:07,476 INFO L125 PetriNetUnfolderBase]: For 230806/230806 co-relation queries the response was YES. [2024-06-20 15:47:07,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8758 conditions, 1097 events. 551/1097 cut-off events. For 230806/230806 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 6115 event pairs, 156 based on Foata normal form. 2/1097 useless extension candidates. Maximal degree in co-relation 8641. Up to 1047 conditions per place. [2024-06-20 15:47:07,485 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 172 selfloop transitions, 14 changer transitions 0/188 dead transitions. [2024-06-20 15:47:07,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 188 transitions, 1765 flow [2024-06-20 15:47:07,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:07,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-20 15:47:07,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-20 15:47:07,486 INFO L175 Difference]: Start difference. First operand has 256 places, 173 transitions, 1335 flow. Second operand 11 states and 113 transitions. [2024-06-20 15:47:07,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 188 transitions, 1765 flow [2024-06-20 15:47:08,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 188 transitions, 1735 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-20 15:47:08,006 INFO L231 Difference]: Finished difference. Result has 252 places, 174 transitions, 1367 flow [2024-06-20 15:47:08,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1367, PETRI_PLACES=252, PETRI_TRANSITIONS=174} [2024-06-20 15:47:08,006 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-20 15:47:08,006 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 174 transitions, 1367 flow [2024-06-20 15:47:08,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:08,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:08,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:08,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-20 15:47:08,007 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:08,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash -118840026, now seen corresponding path program 21 times [2024-06-20 15:47:08,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:08,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087099661] [2024-06-20 15:47:08,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:08,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:09,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:09,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087099661] [2024-06-20 15:47:09,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087099661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:09,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:09,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:09,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262125355] [2024-06-20 15:47:09,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:09,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:09,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:09,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:09,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:09,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:09,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 174 transitions, 1367 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:09,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:09,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:09,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:09,845 INFO L124 PetriNetUnfolderBase]: 555/1105 cut-off events. [2024-06-20 15:47:09,846 INFO L125 PetriNetUnfolderBase]: For 226395/226395 co-relation queries the response was YES. [2024-06-20 15:47:09,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8796 conditions, 1105 events. 555/1105 cut-off events. For 226395/226395 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6168 event pairs, 158 based on Foata normal form. 2/1105 useless extension candidates. Maximal degree in co-relation 8681. Up to 1060 conditions per place. [2024-06-20 15:47:09,853 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 172 selfloop transitions, 15 changer transitions 0/189 dead transitions. [2024-06-20 15:47:09,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 189 transitions, 1803 flow [2024-06-20 15:47:09,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:09,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:09,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-20 15:47:09,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-20 15:47:09,854 INFO L175 Difference]: Start difference. First operand has 252 places, 174 transitions, 1367 flow. Second operand 11 states and 114 transitions. [2024-06-20 15:47:09,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 189 transitions, 1803 flow [2024-06-20 15:47:10,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 189 transitions, 1751 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-20 15:47:10,346 INFO L231 Difference]: Finished difference. Result has 254 places, 175 transitions, 1381 flow [2024-06-20 15:47:10,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1381, PETRI_PLACES=254, PETRI_TRANSITIONS=175} [2024-06-20 15:47:10,347 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-20 15:47:10,347 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 175 transitions, 1381 flow [2024-06-20 15:47:10,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:10,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:10,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:10,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-20 15:47:10,347 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:10,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:10,347 INFO L85 PathProgramCache]: Analyzing trace with hash 969138950, now seen corresponding path program 36 times [2024-06-20 15:47:10,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:10,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511309093] [2024-06-20 15:47:10,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:10,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:11,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:11,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511309093] [2024-06-20 15:47:11,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511309093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:11,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:11,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:11,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975536058] [2024-06-20 15:47:11,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:11,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:11,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:11,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:11,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:11,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:11,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 175 transitions, 1381 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:11,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:11,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:11,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:12,189 INFO L124 PetriNetUnfolderBase]: 582/1166 cut-off events. [2024-06-20 15:47:12,189 INFO L125 PetriNetUnfolderBase]: For 282824/282824 co-relation queries the response was YES. [2024-06-20 15:47:12,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9541 conditions, 1166 events. 582/1166 cut-off events. For 282824/282824 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6622 event pairs, 133 based on Foata normal form. 8/1172 useless extension candidates. Maximal degree in co-relation 9425. Up to 649 conditions per place. [2024-06-20 15:47:12,199 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 124 selfloop transitions, 64 changer transitions 10/200 dead transitions. [2024-06-20 15:47:12,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 200 transitions, 2045 flow [2024-06-20 15:47:12,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:12,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:12,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-20 15:47:12,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-20 15:47:12,200 INFO L175 Difference]: Start difference. First operand has 254 places, 175 transitions, 1381 flow. Second operand 12 states and 146 transitions. [2024-06-20 15:47:12,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 200 transitions, 2045 flow [2024-06-20 15:47:12,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 200 transitions, 1989 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-20 15:47:12,676 INFO L231 Difference]: Finished difference. Result has 257 places, 172 transitions, 1438 flow [2024-06-20 15:47:12,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1438, PETRI_PLACES=257, PETRI_TRANSITIONS=172} [2024-06-20 15:47:12,677 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-20 15:47:12,677 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 172 transitions, 1438 flow [2024-06-20 15:47:12,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:12,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:12,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:12,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-20 15:47:12,677 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:12,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:12,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1391744646, now seen corresponding path program 37 times [2024-06-20 15:47:12,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:12,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283921756] [2024-06-20 15:47:12,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:12,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:13,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:13,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283921756] [2024-06-20 15:47:13,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283921756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:13,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:13,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:13,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716909830] [2024-06-20 15:47:13,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:14,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:14,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:14,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:14,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:14,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:14,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 172 transitions, 1438 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:14,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:14,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:14,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:14,735 INFO L124 PetriNetUnfolderBase]: 567/1141 cut-off events. [2024-06-20 15:47:14,735 INFO L125 PetriNetUnfolderBase]: For 306907/306907 co-relation queries the response was YES. [2024-06-20 15:47:14,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8738 conditions, 1141 events. 567/1141 cut-off events. For 306907/306907 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6474 event pairs, 138 based on Foata normal form. 22/1161 useless extension candidates. Maximal degree in co-relation 8621. Up to 820 conditions per place. [2024-06-20 15:47:14,745 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 124 selfloop transitions, 55 changer transitions 12/193 dead transitions. [2024-06-20 15:47:14,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 193 transitions, 1924 flow [2024-06-20 15:47:14,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:14,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:14,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 15:47:14,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 15:47:14,746 INFO L175 Difference]: Start difference. First operand has 257 places, 172 transitions, 1438 flow. Second operand 11 states and 134 transitions. [2024-06-20 15:47:14,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 193 transitions, 1924 flow [2024-06-20 15:47:15,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 193 transitions, 1811 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 15:47:15,260 INFO L231 Difference]: Finished difference. Result has 253 places, 165 transitions, 1399 flow [2024-06-20 15:47:15,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1399, PETRI_PLACES=253, PETRI_TRANSITIONS=165} [2024-06-20 15:47:15,261 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-20 15:47:15,261 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 165 transitions, 1399 flow [2024-06-20 15:47:15,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:15,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:15,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:15,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-20 15:47:15,261 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:15,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:15,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1396208646, now seen corresponding path program 38 times [2024-06-20 15:47:15,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:15,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861985233] [2024-06-20 15:47:15,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:15,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:16,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:16,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:16,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861985233] [2024-06-20 15:47:16,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861985233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:16,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:16,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:16,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455521048] [2024-06-20 15:47:16,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:16,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:16,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:16,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:16,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:17,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:17,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 165 transitions, 1399 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:17,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:17,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:17,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:17,699 INFO L124 PetriNetUnfolderBase]: 558/1126 cut-off events. [2024-06-20 15:47:17,700 INFO L125 PetriNetUnfolderBase]: For 277137/277137 co-relation queries the response was YES. [2024-06-20 15:47:17,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9492 conditions, 1126 events. 558/1126 cut-off events. For 277137/277137 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6364 event pairs, 139 based on Foata normal form. 8/1132 useless extension candidates. Maximal degree in co-relation 9377. Up to 868 conditions per place. [2024-06-20 15:47:17,709 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 137 selfloop transitions, 44 changer transitions 8/191 dead transitions. [2024-06-20 15:47:17,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 191 transitions, 2055 flow [2024-06-20 15:47:17,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:17,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-20 15:47:17,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-20 15:47:17,710 INFO L175 Difference]: Start difference. First operand has 253 places, 165 transitions, 1399 flow. Second operand 12 states and 143 transitions. [2024-06-20 15:47:17,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 191 transitions, 2055 flow [2024-06-20 15:47:18,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 191 transitions, 1909 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-20 15:47:18,244 INFO L231 Difference]: Finished difference. Result has 250 places, 162 transitions, 1323 flow [2024-06-20 15:47:18,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1323, PETRI_PLACES=250, PETRI_TRANSITIONS=162} [2024-06-20 15:47:18,244 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-20 15:47:18,245 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 162 transitions, 1323 flow [2024-06-20 15:47:18,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:18,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:18,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:18,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-20 15:47:18,245 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:18,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:18,245 INFO L85 PathProgramCache]: Analyzing trace with hash -157810986, now seen corresponding path program 39 times [2024-06-20 15:47:18,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:18,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026403918] [2024-06-20 15:47:18,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:18,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:19,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:19,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:19,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026403918] [2024-06-20 15:47:19,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026403918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:19,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:19,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:19,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793541537] [2024-06-20 15:47:19,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:19,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:19,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:19,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:19,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:19,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:19,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 162 transitions, 1323 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:19,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:19,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:19,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:20,417 INFO L124 PetriNetUnfolderBase]: 526/1062 cut-off events. [2024-06-20 15:47:20,417 INFO L125 PetriNetUnfolderBase]: For 242843/242843 co-relation queries the response was YES. [2024-06-20 15:47:20,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8295 conditions, 1062 events. 526/1062 cut-off events. For 242843/242843 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5936 event pairs, 130 based on Foata normal form. 10/1070 useless extension candidates. Maximal degree in co-relation 8181. Up to 868 conditions per place. [2024-06-20 15:47:20,427 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 128 selfloop transitions, 42 changer transitions 11/183 dead transitions. [2024-06-20 15:47:20,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 183 transitions, 1759 flow [2024-06-20 15:47:20,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:20,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:20,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-20 15:47:20,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-20 15:47:20,427 INFO L175 Difference]: Start difference. First operand has 250 places, 162 transitions, 1323 flow. Second operand 12 states and 137 transitions. [2024-06-20 15:47:20,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 183 transitions, 1759 flow [2024-06-20 15:47:20,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 183 transitions, 1662 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-20 15:47:20,859 INFO L231 Difference]: Finished difference. Result has 247 places, 159 transitions, 1287 flow [2024-06-20 15:47:20,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1287, PETRI_PLACES=247, PETRI_TRANSITIONS=159} [2024-06-20 15:47:20,859 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-20 15:47:20,859 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 159 transitions, 1287 flow [2024-06-20 15:47:20,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:20,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:20,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:20,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-20 15:47:20,860 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:20,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:20,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1569113750, now seen corresponding path program 22 times [2024-06-20 15:47:20,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:20,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124403766] [2024-06-20 15:47:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:20,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:22,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:22,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124403766] [2024-06-20 15:47:22,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124403766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:22,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:22,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:22,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053299500] [2024-06-20 15:47:22,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:22,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:22,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:22,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:22,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:22,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:22,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 159 transitions, 1287 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:22,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:22,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:22,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:23,001 INFO L124 PetriNetUnfolderBase]: 504/1020 cut-off events. [2024-06-20 15:47:23,001 INFO L125 PetriNetUnfolderBase]: For 204915/204915 co-relation queries the response was YES. [2024-06-20 15:47:23,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8138 conditions, 1020 events. 504/1020 cut-off events. For 204915/204915 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5617 event pairs, 132 based on Foata normal form. 2/1020 useless extension candidates. Maximal degree in co-relation 8025. Up to 870 conditions per place. [2024-06-20 15:47:23,010 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 39 changer transitions 0/175 dead transitions. [2024-06-20 15:47:23,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 175 transitions, 1707 flow [2024-06-20 15:47:23,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:23,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:23,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-20 15:47:23,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-20 15:47:23,013 INFO L175 Difference]: Start difference. First operand has 247 places, 159 transitions, 1287 flow. Second operand 11 states and 126 transitions. [2024-06-20 15:47:23,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 175 transitions, 1707 flow [2024-06-20 15:47:23,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 175 transitions, 1621 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-20 15:47:23,442 INFO L231 Difference]: Finished difference. Result has 244 places, 160 transitions, 1319 flow [2024-06-20 15:47:23,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1319, PETRI_PLACES=244, PETRI_TRANSITIONS=160} [2024-06-20 15:47:23,442 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2024-06-20 15:47:23,443 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 160 transitions, 1319 flow [2024-06-20 15:47:23,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:23,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:23,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:23,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-20 15:47:23,443 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:23,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:23,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1146636394, now seen corresponding path program 23 times [2024-06-20 15:47:23,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:23,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257376228] [2024-06-20 15:47:23,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:23,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:24,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:24,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257376228] [2024-06-20 15:47:24,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257376228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:24,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:24,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:24,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459846476] [2024-06-20 15:47:24,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:24,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:24,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:24,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:24,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:24,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:24,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 160 transitions, 1319 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:24,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:24,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:24,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:25,316 INFO L124 PetriNetUnfolderBase]: 544/1100 cut-off events. [2024-06-20 15:47:25,316 INFO L125 PetriNetUnfolderBase]: For 255802/255802 co-relation queries the response was YES. [2024-06-20 15:47:25,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9620 conditions, 1100 events. 544/1100 cut-off events. For 255802/255802 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6199 event pairs, 148 based on Foata normal form. 2/1100 useless extension candidates. Maximal degree in co-relation 9507. Up to 798 conditions per place. [2024-06-20 15:47:25,326 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 128 selfloop transitions, 53 changer transitions 0/183 dead transitions. [2024-06-20 15:47:25,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 183 transitions, 2007 flow [2024-06-20 15:47:25,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:25,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:25,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 15:47:25,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-20 15:47:25,327 INFO L175 Difference]: Start difference. First operand has 244 places, 160 transitions, 1319 flow. Second operand 11 states and 136 transitions. [2024-06-20 15:47:25,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 183 transitions, 2007 flow [2024-06-20 15:47:25,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 183 transitions, 1907 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-20 15:47:25,813 INFO L231 Difference]: Finished difference. Result has 247 places, 162 transitions, 1403 flow [2024-06-20 15:47:25,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1403, PETRI_PLACES=247, PETRI_TRANSITIONS=162} [2024-06-20 15:47:25,813 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-20 15:47:25,813 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 162 transitions, 1403 flow [2024-06-20 15:47:25,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:25,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:25,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:25,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-20 15:47:25,814 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:25,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:25,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1146390440, now seen corresponding path program 40 times [2024-06-20 15:47:25,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:25,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961883875] [2024-06-20 15:47:25,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:25,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:27,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:27,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961883875] [2024-06-20 15:47:27,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961883875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:27,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:27,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:27,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064304039] [2024-06-20 15:47:27,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:27,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:27,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:27,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:27,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:27,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:27,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 162 transitions, 1403 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:27,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:27,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:27,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:28,216 INFO L124 PetriNetUnfolderBase]: 560/1136 cut-off events. [2024-06-20 15:47:28,216 INFO L125 PetriNetUnfolderBase]: For 294905/294905 co-relation queries the response was YES. [2024-06-20 15:47:28,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9791 conditions, 1136 events. 560/1136 cut-off events. For 294905/294905 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6502 event pairs, 158 based on Foata normal form. 10/1144 useless extension candidates. Maximal degree in co-relation 9677. Up to 883 conditions per place. [2024-06-20 15:47:28,226 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 126 selfloop transitions, 47 changer transitions 9/184 dead transitions. [2024-06-20 15:47:28,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 184 transitions, 1845 flow [2024-06-20 15:47:28,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:28,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-20 15:47:28,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-20 15:47:28,227 INFO L175 Difference]: Start difference. First operand has 247 places, 162 transitions, 1403 flow. Second operand 12 states and 146 transitions. [2024-06-20 15:47:28,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 184 transitions, 1845 flow [2024-06-20 15:47:28,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 184 transitions, 1741 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-20 15:47:28,740 INFO L231 Difference]: Finished difference. Result has 252 places, 159 transitions, 1370 flow [2024-06-20 15:47:28,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1370, PETRI_PLACES=252, PETRI_TRANSITIONS=159} [2024-06-20 15:47:28,740 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-20 15:47:28,740 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 159 transitions, 1370 flow [2024-06-20 15:47:28,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:28,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:28,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:28,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-20 15:47:28,740 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:28,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:28,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1562627000, now seen corresponding path program 24 times [2024-06-20 15:47:28,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:28,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357418924] [2024-06-20 15:47:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:28,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:30,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:30,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:30,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357418924] [2024-06-20 15:47:30,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357418924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:30,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:30,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:30,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36704730] [2024-06-20 15:47:30,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:30,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:30,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:30,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:30,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:30,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:30,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 159 transitions, 1370 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:30,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:30,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:30,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:31,177 INFO L124 PetriNetUnfolderBase]: 531/1081 cut-off events. [2024-06-20 15:47:31,177 INFO L125 PetriNetUnfolderBase]: For 257457/257457 co-relation queries the response was YES. [2024-06-20 15:47:31,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9440 conditions, 1081 events. 531/1081 cut-off events. For 257457/257457 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6113 event pairs, 151 based on Foata normal form. 2/1081 useless extension candidates. Maximal degree in co-relation 9324. Up to 931 conditions per place. [2024-06-20 15:47:31,187 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 37 changer transitions 0/175 dead transitions. [2024-06-20 15:47:31,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 175 transitions, 1760 flow [2024-06-20 15:47:31,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:31,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:31,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-20 15:47:31,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-20 15:47:31,188 INFO L175 Difference]: Start difference. First operand has 252 places, 159 transitions, 1370 flow. Second operand 11 states and 127 transitions. [2024-06-20 15:47:31,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 175 transitions, 1760 flow [2024-06-20 15:47:31,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 175 transitions, 1660 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-20 15:47:31,676 INFO L231 Difference]: Finished difference. Result has 249 places, 159 transitions, 1348 flow [2024-06-20 15:47:31,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1348, PETRI_PLACES=249, PETRI_TRANSITIONS=159} [2024-06-20 15:47:31,676 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-20 15:47:31,677 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 159 transitions, 1348 flow [2024-06-20 15:47:31,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:31,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:31,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:31,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-20 15:47:31,677 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:31,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:31,677 INFO L85 PathProgramCache]: Analyzing trace with hash 35725434, now seen corresponding path program 25 times [2024-06-20 15:47:31,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:31,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803984709] [2024-06-20 15:47:31,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:31,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:33,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:33,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803984709] [2024-06-20 15:47:33,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803984709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:33,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:33,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:33,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391648014] [2024-06-20 15:47:33,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:33,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:33,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:33,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:33,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:33,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:33,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 159 transitions, 1348 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:33,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:33,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:33,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:33,695 INFO L124 PetriNetUnfolderBase]: 543/1109 cut-off events. [2024-06-20 15:47:33,695 INFO L125 PetriNetUnfolderBase]: For 274973/274973 co-relation queries the response was YES. [2024-06-20 15:47:33,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9503 conditions, 1109 events. 543/1109 cut-off events. For 274973/274973 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6315 event pairs, 167 based on Foata normal form. 8/1115 useless extension candidates. Maximal degree in co-relation 9388. Up to 988 conditions per place. [2024-06-20 15:47:33,705 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 149 selfloop transitions, 17 changer transitions 13/181 dead transitions. [2024-06-20 15:47:33,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 181 transitions, 1831 flow [2024-06-20 15:47:33,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:33,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-20 15:47:33,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-20 15:47:33,706 INFO L175 Difference]: Start difference. First operand has 249 places, 159 transitions, 1348 flow. Second operand 11 states and 126 transitions. [2024-06-20 15:47:33,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 181 transitions, 1831 flow [2024-06-20 15:47:34,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 181 transitions, 1692 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-20 15:47:34,220 INFO L231 Difference]: Finished difference. Result has 250 places, 157 transitions, 1235 flow [2024-06-20 15:47:34,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1235, PETRI_PLACES=250, PETRI_TRANSITIONS=157} [2024-06-20 15:47:34,221 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-20 15:47:34,221 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 157 transitions, 1235 flow [2024-06-20 15:47:34,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:34,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:34,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:34,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-20 15:47:34,221 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:34,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:34,222 INFO L85 PathProgramCache]: Analyzing trace with hash 35733804, now seen corresponding path program 26 times [2024-06-20 15:47:34,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:34,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877771679] [2024-06-20 15:47:34,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:34,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:35,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:35,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877771679] [2024-06-20 15:47:35,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877771679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:35,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:35,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:35,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639603929] [2024-06-20 15:47:35,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:35,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:35,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:35,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:35,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:35,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:35,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 157 transitions, 1235 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:35,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:35,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:35,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:36,240 INFO L124 PetriNetUnfolderBase]: 517/1059 cut-off events. [2024-06-20 15:47:36,240 INFO L125 PetriNetUnfolderBase]: For 280231/280231 co-relation queries the response was YES. [2024-06-20 15:47:36,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9235 conditions, 1059 events. 517/1059 cut-off events. For 280231/280231 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5973 event pairs, 157 based on Foata normal form. 8/1065 useless extension candidates. Maximal degree in co-relation 9118. Up to 978 conditions per place. [2024-06-20 15:47:36,250 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 146 selfloop transitions, 15 changer transitions 12/175 dead transitions. [2024-06-20 15:47:36,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 175 transitions, 1671 flow [2024-06-20 15:47:36,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:36,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:36,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-20 15:47:36,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 15:47:36,251 INFO L175 Difference]: Start difference. First operand has 250 places, 157 transitions, 1235 flow. Second operand 11 states and 121 transitions. [2024-06-20 15:47:36,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 175 transitions, 1671 flow [2024-06-20 15:47:36,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 175 transitions, 1631 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-20 15:47:36,749 INFO L231 Difference]: Finished difference. Result has 249 places, 154 transitions, 1203 flow [2024-06-20 15:47:36,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1203, PETRI_PLACES=249, PETRI_TRANSITIONS=154} [2024-06-20 15:47:36,749 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-20 15:47:36,749 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 154 transitions, 1203 flow [2024-06-20 15:47:36,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:36,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:36,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:36,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-20 15:47:36,750 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:36,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:36,750 INFO L85 PathProgramCache]: Analyzing trace with hash 36022104, now seen corresponding path program 27 times [2024-06-20 15:47:36,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:36,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666377047] [2024-06-20 15:47:36,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:36,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:38,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:38,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:38,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666377047] [2024-06-20 15:47:38,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666377047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:38,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:38,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:38,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041963385] [2024-06-20 15:47:38,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:38,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:38,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:38,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:38,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:38,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:38,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 154 transitions, 1203 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:38,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:38,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:38,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:38,724 INFO L124 PetriNetUnfolderBase]: 499/1021 cut-off events. [2024-06-20 15:47:38,725 INFO L125 PetriNetUnfolderBase]: For 257176/257176 co-relation queries the response was YES. [2024-06-20 15:47:38,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9090 conditions, 1021 events. 499/1021 cut-off events. For 257176/257176 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5671 event pairs, 153 based on Foata normal form. 2/1021 useless extension candidates. Maximal degree in co-relation 8974. Up to 961 conditions per place. [2024-06-20 15:47:38,733 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 150 selfloop transitions, 18 changer transitions 0/170 dead transitions. [2024-06-20 15:47:38,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 170 transitions, 1613 flow [2024-06-20 15:47:38,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:38,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-20 15:47:38,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-20 15:47:38,734 INFO L175 Difference]: Start difference. First operand has 249 places, 154 transitions, 1203 flow. Second operand 11 states and 119 transitions. [2024-06-20 15:47:38,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 170 transitions, 1613 flow [2024-06-20 15:47:39,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 170 transitions, 1522 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 15:47:39,184 INFO L231 Difference]: Finished difference. Result has 243 places, 155 transitions, 1192 flow [2024-06-20 15:47:39,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1192, PETRI_PLACES=243, PETRI_TRANSITIONS=155} [2024-06-20 15:47:39,184 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-20 15:47:39,184 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 155 transitions, 1192 flow [2024-06-20 15:47:39,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:39,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:39,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:39,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-20 15:47:39,185 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:39,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:39,185 INFO L85 PathProgramCache]: Analyzing trace with hash -200449926, now seen corresponding path program 28 times [2024-06-20 15:47:39,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:39,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275626147] [2024-06-20 15:47:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:39,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:41,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:41,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:41,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275626147] [2024-06-20 15:47:41,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275626147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:41,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:41,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:41,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052954721] [2024-06-20 15:47:41,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:41,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:41,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:41,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:41,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:41,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:41,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 155 transitions, 1192 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:41,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:41,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:41,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:41,602 INFO L124 PetriNetUnfolderBase]: 503/1029 cut-off events. [2024-06-20 15:47:41,602 INFO L125 PetriNetUnfolderBase]: For 252458/252458 co-relation queries the response was YES. [2024-06-20 15:47:41,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9078 conditions, 1029 events. 503/1029 cut-off events. For 252458/252458 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5749 event pairs, 151 based on Foata normal form. 2/1029 useless extension candidates. Maximal degree in co-relation 8965. Up to 962 conditions per place. [2024-06-20 15:47:41,611 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 146 selfloop transitions, 24 changer transitions 0/172 dead transitions. [2024-06-20 15:47:41,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 172 transitions, 1616 flow [2024-06-20 15:47:41,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:41,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-20 15:47:41,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-20 15:47:41,612 INFO L175 Difference]: Start difference. First operand has 243 places, 155 transitions, 1192 flow. Second operand 11 states and 125 transitions. [2024-06-20 15:47:41,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 172 transitions, 1616 flow [2024-06-20 15:47:42,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 172 transitions, 1546 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-20 15:47:42,137 INFO L231 Difference]: Finished difference. Result has 245 places, 156 transitions, 1216 flow [2024-06-20 15:47:42,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1216, PETRI_PLACES=245, PETRI_TRANSITIONS=156} [2024-06-20 15:47:42,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-20 15:47:42,137 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 156 transitions, 1216 flow [2024-06-20 15:47:42,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:42,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:42,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:42,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-20 15:47:42,138 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:42,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:42,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1008699132, now seen corresponding path program 29 times [2024-06-20 15:47:42,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:42,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98105523] [2024-06-20 15:47:42,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:42,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:43,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:43,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:43,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98105523] [2024-06-20 15:47:43,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98105523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:43,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:43,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:43,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134413025] [2024-06-20 15:47:43,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:43,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:43,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:43,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:43,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:43,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:43,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 156 transitions, 1216 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:43,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:43,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:43,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:44,095 INFO L124 PetriNetUnfolderBase]: 507/1037 cut-off events. [2024-06-20 15:47:44,095 INFO L125 PetriNetUnfolderBase]: For 258234/258234 co-relation queries the response was YES. [2024-06-20 15:47:44,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9189 conditions, 1037 events. 507/1037 cut-off events. For 258234/258234 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5800 event pairs, 151 based on Foata normal form. 2/1037 useless extension candidates. Maximal degree in co-relation 9075. Up to 945 conditions per place. [2024-06-20 15:47:44,102 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 140 selfloop transitions, 31 changer transitions 0/173 dead transitions. [2024-06-20 15:47:44,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 173 transitions, 1644 flow [2024-06-20 15:47:44,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:44,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-20 15:47:44,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-20 15:47:44,103 INFO L175 Difference]: Start difference. First operand has 245 places, 156 transitions, 1216 flow. Second operand 11 states and 128 transitions. [2024-06-20 15:47:44,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 173 transitions, 1644 flow [2024-06-20 15:47:44,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 173 transitions, 1560 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-20 15:47:44,613 INFO L231 Difference]: Finished difference. Result has 247 places, 157 transitions, 1242 flow [2024-06-20 15:47:44,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1242, PETRI_PLACES=247, PETRI_TRANSITIONS=157} [2024-06-20 15:47:44,614 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-20 15:47:44,614 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 157 transitions, 1242 flow [2024-06-20 15:47:44,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:44,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:44,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:44,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-20 15:47:44,614 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:44,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:44,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1015192826, now seen corresponding path program 41 times [2024-06-20 15:47:44,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:44,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898142338] [2024-06-20 15:47:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:44,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:46,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:46,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:46,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898142338] [2024-06-20 15:47:46,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898142338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:46,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:46,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:46,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312257279] [2024-06-20 15:47:46,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:46,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:46,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:46,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:46,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:46,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:46,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 157 transitions, 1242 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:46,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:46,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:46,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:46,695 INFO L124 PetriNetUnfolderBase]: 523/1073 cut-off events. [2024-06-20 15:47:46,695 INFO L125 PetriNetUnfolderBase]: For 298442/298442 co-relation queries the response was YES. [2024-06-20 15:47:46,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9312 conditions, 1073 events. 523/1073 cut-off events. For 298442/298442 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6085 event pairs, 155 based on Foata normal form. 10/1081 useless extension candidates. Maximal degree in co-relation 9197. Up to 933 conditions per place. [2024-06-20 15:47:46,705 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 141 selfloop transitions, 24 changer transitions 12/179 dead transitions. [2024-06-20 15:47:46,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 179 transitions, 1672 flow [2024-06-20 15:47:46,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:46,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:46,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-20 15:47:46,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-20 15:47:46,706 INFO L175 Difference]: Start difference. First operand has 247 places, 157 transitions, 1242 flow. Second operand 12 states and 141 transitions. [2024-06-20 15:47:46,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 179 transitions, 1672 flow [2024-06-20 15:47:47,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 179 transitions, 1583 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-20 15:47:47,304 INFO L231 Difference]: Finished difference. Result has 251 places, 151 transitions, 1155 flow [2024-06-20 15:47:47,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1155, PETRI_PLACES=251, PETRI_TRANSITIONS=151} [2024-06-20 15:47:47,304 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-20 15:47:47,304 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 151 transitions, 1155 flow [2024-06-20 15:47:47,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:47,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:47,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:47,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-20 15:47:47,305 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:47,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:47,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1008936716, now seen corresponding path program 42 times [2024-06-20 15:47:47,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:47,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412507397] [2024-06-20 15:47:47,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:47,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:49,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:49,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412507397] [2024-06-20 15:47:49,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412507397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:49,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:49,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:49,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169405508] [2024-06-20 15:47:49,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:49,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:49,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:49,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:49,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:49,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:49,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 151 transitions, 1155 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:49,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:49,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:49,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:49,936 INFO L124 PetriNetUnfolderBase]: 505/1047 cut-off events. [2024-06-20 15:47:49,936 INFO L125 PetriNetUnfolderBase]: For 303893/303893 co-relation queries the response was YES. [2024-06-20 15:47:49,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9157 conditions, 1047 events. 505/1047 cut-off events. For 303893/303893 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5929 event pairs, 157 based on Foata normal form. 10/1055 useless extension candidates. Maximal degree in co-relation 9041. Up to 933 conditions per place. [2024-06-20 15:47:49,944 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 138 selfloop transitions, 21 changer transitions 11/172 dead transitions. [2024-06-20 15:47:49,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 172 transitions, 1567 flow [2024-06-20 15:47:49,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:49,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:49,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-20 15:47:49,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-20 15:47:49,945 INFO L175 Difference]: Start difference. First operand has 251 places, 151 transitions, 1155 flow. Second operand 12 states and 137 transitions. [2024-06-20 15:47:49,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 172 transitions, 1567 flow [2024-06-20 15:47:50,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 172 transitions, 1511 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-20 15:47:50,496 INFO L231 Difference]: Finished difference. Result has 248 places, 148 transitions, 1119 flow [2024-06-20 15:47:50,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1119, PETRI_PLACES=248, PETRI_TRANSITIONS=148} [2024-06-20 15:47:50,497 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-20 15:47:50,497 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 148 transitions, 1119 flow [2024-06-20 15:47:50,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:50,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:50,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:50,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-20 15:47:50,497 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:50,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:50,497 INFO L85 PathProgramCache]: Analyzing trace with hash -193954806, now seen corresponding path program 30 times [2024-06-20 15:47:50,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:50,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107683144] [2024-06-20 15:47:50,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:50,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:52,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:52,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107683144] [2024-06-20 15:47:52,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107683144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:52,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:52,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:52,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909639661] [2024-06-20 15:47:52,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:52,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:52,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:52,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:52,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:52,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:52,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 148 transitions, 1119 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:52,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:52,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:52,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:52,612 INFO L124 PetriNetUnfolderBase]: 476/992 cut-off events. [2024-06-20 15:47:52,613 INFO L125 PetriNetUnfolderBase]: For 253412/253412 co-relation queries the response was YES. [2024-06-20 15:47:52,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8668 conditions, 992 events. 476/992 cut-off events. For 253412/253412 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5555 event pairs, 152 based on Foata normal form. 2/992 useless extension candidates. Maximal degree in co-relation 8553. Up to 905 conditions per place. [2024-06-20 15:47:52,620 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 137 selfloop transitions, 24 changer transitions 0/163 dead transitions. [2024-06-20 15:47:52,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 163 transitions, 1479 flow [2024-06-20 15:47:52,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:47:52,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:47:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-20 15:47:52,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-20 15:47:52,621 INFO L175 Difference]: Start difference. First operand has 248 places, 148 transitions, 1119 flow. Second operand 11 states and 123 transitions. [2024-06-20 15:47:52,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 163 transitions, 1479 flow [2024-06-20 15:47:53,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 163 transitions, 1429 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-20 15:47:53,190 INFO L231 Difference]: Finished difference. Result has 245 places, 148 transitions, 1121 flow [2024-06-20 15:47:53,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1069, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1121, PETRI_PLACES=245, PETRI_TRANSITIONS=148} [2024-06-20 15:47:53,190 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-20 15:47:53,190 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 148 transitions, 1121 flow [2024-06-20 15:47:53,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:53,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:53,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:53,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-20 15:47:53,190 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:53,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:53,191 INFO L85 PathProgramCache]: Analyzing trace with hash -200634500, now seen corresponding path program 43 times [2024-06-20 15:47:53,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:53,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491253436] [2024-06-20 15:47:53,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:53,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:54,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:54,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491253436] [2024-06-20 15:47:54,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491253436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:54,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:54,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:54,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888984173] [2024-06-20 15:47:54,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:54,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:54,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:54,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:54,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:54,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:54,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 148 transitions, 1121 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:54,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:54,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:54,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:55,351 INFO L124 PetriNetUnfolderBase]: 488/1020 cut-off events. [2024-06-20 15:47:55,352 INFO L125 PetriNetUnfolderBase]: For 279844/279844 co-relation queries the response was YES. [2024-06-20 15:47:55,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8750 conditions, 1020 events. 488/1020 cut-off events. For 279844/279844 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5781 event pairs, 152 based on Foata normal form. 8/1026 useless extension candidates. Maximal degree in co-relation 8635. Up to 912 conditions per place. [2024-06-20 15:47:55,361 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 136 selfloop transitions, 19 changer transitions 11/168 dead transitions. [2024-06-20 15:47:55,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 168 transitions, 1511 flow [2024-06-20 15:47:55,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:55,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-20 15:47:55,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-20 15:47:55,362 INFO L175 Difference]: Start difference. First operand has 245 places, 148 transitions, 1121 flow. Second operand 12 states and 136 transitions. [2024-06-20 15:47:55,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 168 transitions, 1511 flow [2024-06-20 15:47:55,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 168 transitions, 1299 flow, removed 21 selfloop flow, removed 14 redundant places. [2024-06-20 15:47:55,938 INFO L231 Difference]: Finished difference. Result has 243 places, 145 transitions, 933 flow [2024-06-20 15:47:55,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=933, PETRI_PLACES=243, PETRI_TRANSITIONS=145} [2024-06-20 15:47:55,938 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-20 15:47:55,938 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 145 transitions, 933 flow [2024-06-20 15:47:55,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:55,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:55,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:55,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-20 15:47:55,939 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:55,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:55,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1562620056, now seen corresponding path program 44 times [2024-06-20 15:47:55,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:55,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977515193] [2024-06-20 15:47:55,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:55,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:47:57,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:47:57,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:47:57,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977515193] [2024-06-20 15:47:57,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977515193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:47:57,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:47:57,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:47:57,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128172156] [2024-06-20 15:47:57,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:47:57,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:47:57,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:47:57,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:47:57,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:47:57,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:47:57,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 145 transitions, 933 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:57,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:47:57,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:47:57,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:47:58,152 INFO L124 PetriNetUnfolderBase]: 456/956 cut-off events. [2024-06-20 15:47:58,153 INFO L125 PetriNetUnfolderBase]: For 249032/249032 co-relation queries the response was YES. [2024-06-20 15:47:58,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7321 conditions, 956 events. 456/956 cut-off events. For 249032/249032 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5349 event pairs, 135 based on Foata normal form. 10/964 useless extension candidates. Maximal degree in co-relation 7209. Up to 778 conditions per place. [2024-06-20 15:47:58,159 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 125 selfloop transitions, 29 changer transitions 11/167 dead transitions. [2024-06-20 15:47:58,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 167 transitions, 1339 flow [2024-06-20 15:47:58,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:47:58,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:47:58,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-20 15:47:58,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-20 15:47:58,160 INFO L175 Difference]: Start difference. First operand has 243 places, 145 transitions, 933 flow. Second operand 12 states and 139 transitions. [2024-06-20 15:47:58,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 167 transitions, 1339 flow [2024-06-20 15:47:58,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 167 transitions, 1297 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 15:47:58,716 INFO L231 Difference]: Finished difference. Result has 240 places, 142 transitions, 927 flow [2024-06-20 15:47:58,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=927, PETRI_PLACES=240, PETRI_TRANSITIONS=142} [2024-06-20 15:47:58,717 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-20 15:47:58,717 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 142 transitions, 927 flow [2024-06-20 15:47:58,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:47:58,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:47:58,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:47:58,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-20 15:47:58,719 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:47:58,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:47:58,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1917784264, now seen corresponding path program 45 times [2024-06-20 15:47:58,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:47:58,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113331690] [2024-06-20 15:47:58,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:47:58,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:47:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:00,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:00,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:00,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113331690] [2024-06-20 15:48:00,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113331690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:00,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:00,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 15:48:00,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741208763] [2024-06-20 15:48:00,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:00,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 15:48:00,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:00,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 15:48:00,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 15:48:00,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:00,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 142 transitions, 927 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:00,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:00,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:00,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:00,606 INFO L124 PetriNetUnfolderBase]: 439/929 cut-off events. [2024-06-20 15:48:00,606 INFO L125 PetriNetUnfolderBase]: For 234914/234914 co-relation queries the response was YES. [2024-06-20 15:48:00,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6990 conditions, 929 events. 439/929 cut-off events. For 234914/234914 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5199 event pairs, 134 based on Foata normal form. 10/937 useless extension candidates. Maximal degree in co-relation 6879. Up to 744 conditions per place. [2024-06-20 15:48:00,613 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 121 selfloop transitions, 29 changer transitions 11/163 dead transitions. [2024-06-20 15:48:00,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 163 transitions, 1321 flow [2024-06-20 15:48:00,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:00,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:00,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-20 15:48:00,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-20 15:48:00,614 INFO L175 Difference]: Start difference. First operand has 240 places, 142 transitions, 927 flow. Second operand 12 states and 140 transitions. [2024-06-20 15:48:00,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 163 transitions, 1321 flow [2024-06-20 15:48:01,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 163 transitions, 1243 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-20 15:48:01,124 INFO L231 Difference]: Finished difference. Result has 237 places, 139 transitions, 890 flow [2024-06-20 15:48:01,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=890, PETRI_PLACES=237, PETRI_TRANSITIONS=139} [2024-06-20 15:48:01,124 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-20 15:48:01,124 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 139 transitions, 890 flow [2024-06-20 15:48:01,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:01,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:01,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:01,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-20 15:48:01,125 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:01,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:01,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1917788914, now seen corresponding path program 46 times [2024-06-20 15:48:01,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:01,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837313261] [2024-06-20 15:48:01,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:01,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:02,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:02,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837313261] [2024-06-20 15:48:02,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837313261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:02,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:02,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 15:48:02,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011815745] [2024-06-20 15:48:02,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:02,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 15:48:02,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:02,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 15:48:02,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 15:48:02,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:02,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 139 transitions, 890 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:02,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:02,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:02,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:02,852 INFO L124 PetriNetUnfolderBase]: 420/896 cut-off events. [2024-06-20 15:48:02,852 INFO L125 PetriNetUnfolderBase]: For 216710/216710 co-relation queries the response was YES. [2024-06-20 15:48:02,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6684 conditions, 896 events. 420/896 cut-off events. For 216710/216710 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4980 event pairs, 125 based on Foata normal form. 8/902 useless extension candidates. Maximal degree in co-relation 6573. Up to 674 conditions per place. [2024-06-20 15:48:02,857 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 27 changer transitions 8/160 dead transitions. [2024-06-20 15:48:02,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 160 transitions, 1458 flow [2024-06-20 15:48:02,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:48:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:48:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 15:48:02,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 15:48:02,858 INFO L175 Difference]: Start difference. First operand has 237 places, 139 transitions, 890 flow. Second operand 11 states and 132 transitions. [2024-06-20 15:48:02,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 160 transitions, 1458 flow [2024-06-20 15:48:03,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 160 transitions, 1390 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-20 15:48:03,299 INFO L231 Difference]: Finished difference. Result has 234 places, 135 transitions, 860 flow [2024-06-20 15:48:03,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=860, PETRI_PLACES=234, PETRI_TRANSITIONS=135} [2024-06-20 15:48:03,299 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-20 15:48:03,299 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 135 transitions, 860 flow [2024-06-20 15:48:03,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:03,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:03,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:03,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-20 15:48:03,300 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:03,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:03,300 INFO L85 PathProgramCache]: Analyzing trace with hash -151857638, now seen corresponding path program 1 times [2024-06-20 15:48:03,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:03,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916433376] [2024-06-20 15:48:03,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:03,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:05,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:05,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:05,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916433376] [2024-06-20 15:48:05,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916433376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:05,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:05,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:05,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457951112] [2024-06-20 15:48:05,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:05,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:05,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:05,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:05,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:05,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:05,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 135 transitions, 860 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:05,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:05,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:05,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:05,489 INFO L124 PetriNetUnfolderBase]: 394/842 cut-off events. [2024-06-20 15:48:05,489 INFO L125 PetriNetUnfolderBase]: For 181528/181528 co-relation queries the response was YES. [2024-06-20 15:48:05,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5964 conditions, 842 events. 394/842 cut-off events. For 181528/181528 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4593 event pairs, 114 based on Foata normal form. 6/846 useless extension candidates. Maximal degree in co-relation 5853. Up to 765 conditions per place. [2024-06-20 15:48:05,495 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 127 selfloop transitions, 8 changer transitions 20/157 dead transitions. [2024-06-20 15:48:05,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 157 transitions, 1236 flow [2024-06-20 15:48:05,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:05,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-20 15:48:05,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-20 15:48:05,496 INFO L175 Difference]: Start difference. First operand has 234 places, 135 transitions, 860 flow. Second operand 12 states and 126 transitions. [2024-06-20 15:48:05,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 157 transitions, 1236 flow [2024-06-20 15:48:05,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 157 transitions, 1145 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-20 15:48:05,911 INFO L231 Difference]: Finished difference. Result has 230 places, 129 transitions, 765 flow [2024-06-20 15:48:05,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=765, PETRI_PLACES=230, PETRI_TRANSITIONS=129} [2024-06-20 15:48:05,912 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-20 15:48:05,912 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 129 transitions, 765 flow [2024-06-20 15:48:05,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:05,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:05,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:05,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-20 15:48:05,912 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:05,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:05,912 INFO L85 PathProgramCache]: Analyzing trace with hash -427079834, now seen corresponding path program 2 times [2024-06-20 15:48:05,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:05,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299975703] [2024-06-20 15:48:05,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:05,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:07,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:07,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299975703] [2024-06-20 15:48:07,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299975703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:07,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:07,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:07,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213795188] [2024-06-20 15:48:07,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:07,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:07,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:07,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:07,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:07,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:07,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 129 transitions, 765 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:07,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:07,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:07,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:08,031 INFO L124 PetriNetUnfolderBase]: 380/811 cut-off events. [2024-06-20 15:48:08,031 INFO L125 PetriNetUnfolderBase]: For 174792/174792 co-relation queries the response was YES. [2024-06-20 15:48:08,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5643 conditions, 811 events. 380/811 cut-off events. For 174792/174792 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4384 event pairs, 114 based on Foata normal form. 6/815 useless extension candidates. Maximal degree in co-relation 5535. Up to 529 conditions per place. [2024-06-20 15:48:08,036 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 40 changer transitions 11/150 dead transitions. [2024-06-20 15:48:08,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 150 transitions, 1121 flow [2024-06-20 15:48:08,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:08,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:08,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-20 15:48:08,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-20 15:48:08,036 INFO L175 Difference]: Start difference. First operand has 230 places, 129 transitions, 765 flow. Second operand 12 states and 135 transitions. [2024-06-20 15:48:08,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 150 transitions, 1121 flow [2024-06-20 15:48:08,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 150 transitions, 1087 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-20 15:48:08,313 INFO L231 Difference]: Finished difference. Result has 220 places, 126 transitions, 804 flow [2024-06-20 15:48:08,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=804, PETRI_PLACES=220, PETRI_TRANSITIONS=126} [2024-06-20 15:48:08,314 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-20 15:48:08,314 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 126 transitions, 804 flow [2024-06-20 15:48:08,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:08,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:08,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:08,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-20 15:48:08,314 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:08,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:08,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1127796740, now seen corresponding path program 3 times [2024-06-20 15:48:08,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:08,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884468645] [2024-06-20 15:48:08,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:08,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:10,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:10,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884468645] [2024-06-20 15:48:10,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884468645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:10,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:10,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:10,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260627697] [2024-06-20 15:48:10,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:10,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:10,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:10,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:10,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:10,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:10,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 126 transitions, 804 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:10,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:10,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:10,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:11,301 INFO L124 PetriNetUnfolderBase]: 370/793 cut-off events. [2024-06-20 15:48:11,301 INFO L125 PetriNetUnfolderBase]: For 162331/162331 co-relation queries the response was YES. [2024-06-20 15:48:11,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5429 conditions, 793 events. 370/793 cut-off events. For 162331/162331 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4276 event pairs, 110 based on Foata normal form. 6/797 useless extension candidates. Maximal degree in co-relation 5325. Up to 499 conditions per place. [2024-06-20 15:48:11,308 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 95 selfloop transitions, 40 changer transitions 10/147 dead transitions. [2024-06-20 15:48:11,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 147 transitions, 1148 flow [2024-06-20 15:48:11,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:11,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:11,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-20 15:48:11,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-20 15:48:11,309 INFO L175 Difference]: Start difference. First operand has 220 places, 126 transitions, 804 flow. Second operand 12 states and 135 transitions. [2024-06-20 15:48:11,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 147 transitions, 1148 flow [2024-06-20 15:48:11,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 147 transitions, 1062 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:11,588 INFO L231 Difference]: Finished difference. Result has 216 places, 122 transitions, 782 flow [2024-06-20 15:48:11,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=782, PETRI_PLACES=216, PETRI_TRANSITIONS=122} [2024-06-20 15:48:11,589 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-20 15:48:11,589 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 122 transitions, 782 flow [2024-06-20 15:48:11,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:11,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:11,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:11,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-20 15:48:11,589 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:11,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:11,590 INFO L85 PathProgramCache]: Analyzing trace with hash -793915658, now seen corresponding path program 4 times [2024-06-20 15:48:11,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:11,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635823221] [2024-06-20 15:48:11,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:11,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:13,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:13,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635823221] [2024-06-20 15:48:13,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635823221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:13,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:13,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:13,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039216782] [2024-06-20 15:48:13,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:13,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:13,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:13,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:13,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:13,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:13,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 122 transitions, 782 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:13,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:13,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:13,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:14,370 INFO L124 PetriNetUnfolderBase]: 358/769 cut-off events. [2024-06-20 15:48:14,370 INFO L125 PetriNetUnfolderBase]: For 154943/154943 co-relation queries the response was YES. [2024-06-20 15:48:14,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5293 conditions, 769 events. 358/769 cut-off events. For 154943/154943 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4115 event pairs, 112 based on Foata normal form. 6/773 useless extension candidates. Maximal degree in co-relation 5191. Up to 501 conditions per place. [2024-06-20 15:48:14,376 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 93 selfloop transitions, 34 changer transitions 14/143 dead transitions. [2024-06-20 15:48:14,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 143 transitions, 1120 flow [2024-06-20 15:48:14,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:14,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:14,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-20 15:48:14,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-20 15:48:14,377 INFO L175 Difference]: Start difference. First operand has 216 places, 122 transitions, 782 flow. Second operand 12 states and 135 transitions. [2024-06-20 15:48:14,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 143 transitions, 1120 flow [2024-06-20 15:48:14,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 143 transitions, 1032 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-20 15:48:14,601 INFO L231 Difference]: Finished difference. Result has 210 places, 117 transitions, 742 flow [2024-06-20 15:48:14,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=742, PETRI_PLACES=210, PETRI_TRANSITIONS=117} [2024-06-20 15:48:14,601 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-20 15:48:14,601 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 117 transitions, 742 flow [2024-06-20 15:48:14,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:14,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:14,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:14,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-20 15:48:14,602 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:14,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:14,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1652195542, now seen corresponding path program 5 times [2024-06-20 15:48:14,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:14,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291618947] [2024-06-20 15:48:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:14,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:16,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:16,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291618947] [2024-06-20 15:48:16,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291618947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:16,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:16,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:16,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710251252] [2024-06-20 15:48:16,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:16,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:16,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:16,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:16,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:16,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:16,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 117 transitions, 742 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:16,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:16,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:16,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:17,351 INFO L124 PetriNetUnfolderBase]: 348/747 cut-off events. [2024-06-20 15:48:17,351 INFO L125 PetriNetUnfolderBase]: For 144305/144305 co-relation queries the response was YES. [2024-06-20 15:48:17,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5104 conditions, 747 events. 348/747 cut-off events. For 144305/144305 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3947 event pairs, 112 based on Foata normal form. 6/751 useless extension candidates. Maximal degree in co-relation 5005. Up to 491 conditions per place. [2024-06-20 15:48:17,356 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 84 selfloop transitions, 30 changer transitions 21/137 dead transitions. [2024-06-20 15:48:17,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 137 transitions, 1064 flow [2024-06-20 15:48:17,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:17,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:17,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-20 15:48:17,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-20 15:48:17,357 INFO L175 Difference]: Start difference. First operand has 210 places, 117 transitions, 742 flow. Second operand 12 states and 131 transitions. [2024-06-20 15:48:17,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 137 transitions, 1064 flow [2024-06-20 15:48:17,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 137 transitions, 986 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-20 15:48:17,532 INFO L231 Difference]: Finished difference. Result has 202 places, 110 transitions, 695 flow [2024-06-20 15:48:17,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=695, PETRI_PLACES=202, PETRI_TRANSITIONS=110} [2024-06-20 15:48:17,532 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-20 15:48:17,532 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 110 transitions, 695 flow [2024-06-20 15:48:17,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:17,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:17,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:17,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-20 15:48:17,532 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:17,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:17,533 INFO L85 PathProgramCache]: Analyzing trace with hash 737630234, now seen corresponding path program 6 times [2024-06-20 15:48:17,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:17,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835161020] [2024-06-20 15:48:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:17,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:20,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:20,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:20,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835161020] [2024-06-20 15:48:20,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835161020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:20,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:20,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:20,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719572683] [2024-06-20 15:48:20,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:20,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:20,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:20,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:20,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:20,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:20,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 110 transitions, 695 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:20,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:20,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:20,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:20,750 INFO L124 PetriNetUnfolderBase]: 333/713 cut-off events. [2024-06-20 15:48:20,750 INFO L125 PetriNetUnfolderBase]: For 130795/130795 co-relation queries the response was YES. [2024-06-20 15:48:20,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4849 conditions, 713 events. 333/713 cut-off events. For 130795/130795 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3746 event pairs, 109 based on Foata normal form. 6/717 useless extension candidates. Maximal degree in co-relation 4754. Up to 598 conditions per place. [2024-06-20 15:48:20,755 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 97 selfloop transitions, 19 changer transitions 10/128 dead transitions. [2024-06-20 15:48:20,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 128 transitions, 991 flow [2024-06-20 15:48:20,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:20,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-20 15:48:20,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-20 15:48:20,756 INFO L175 Difference]: Start difference. First operand has 202 places, 110 transitions, 695 flow. Second operand 12 states and 130 transitions. [2024-06-20 15:48:20,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 128 transitions, 991 flow [2024-06-20 15:48:20,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 128 transitions, 919 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:20,911 INFO L231 Difference]: Finished difference. Result has 191 places, 106 transitions, 645 flow [2024-06-20 15:48:20,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=645, PETRI_PLACES=191, PETRI_TRANSITIONS=106} [2024-06-20 15:48:20,911 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-20 15:48:20,911 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 106 transitions, 645 flow [2024-06-20 15:48:20,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:20,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:20,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:20,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-20 15:48:20,912 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:20,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:20,912 INFO L85 PathProgramCache]: Analyzing trace with hash 536281514, now seen corresponding path program 7 times [2024-06-20 15:48:20,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:20,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875629831] [2024-06-20 15:48:20,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:20,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:23,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:23,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:23,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875629831] [2024-06-20 15:48:23,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875629831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:23,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:23,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:23,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462617698] [2024-06-20 15:48:23,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:23,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:23,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:23,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:23,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:23,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:23,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 106 transitions, 645 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:23,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:23,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:23,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:24,045 INFO L124 PetriNetUnfolderBase]: 306/656 cut-off events. [2024-06-20 15:48:24,045 INFO L125 PetriNetUnfolderBase]: For 98268/98268 co-relation queries the response was YES. [2024-06-20 15:48:24,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4062 conditions, 656 events. 306/656 cut-off events. For 98268/98268 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3347 event pairs, 97 based on Foata normal form. 6/660 useless extension candidates. Maximal degree in co-relation 3972. Up to 564 conditions per place. [2024-06-20 15:48:24,049 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 90 selfloop transitions, 14 changer transitions 17/123 dead transitions. [2024-06-20 15:48:24,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 123 transitions, 929 flow [2024-06-20 15:48:24,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:24,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:24,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-20 15:48:24,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-20 15:48:24,050 INFO L175 Difference]: Start difference. First operand has 191 places, 106 transitions, 645 flow. Second operand 12 states and 126 transitions. [2024-06-20 15:48:24,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 123 transitions, 929 flow [2024-06-20 15:48:24,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 123 transitions, 883 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-20 15:48:24,169 INFO L231 Difference]: Finished difference. Result has 185 places, 100 transitions, 602 flow [2024-06-20 15:48:24,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=602, PETRI_PLACES=185, PETRI_TRANSITIONS=100} [2024-06-20 15:48:24,169 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-20 15:48:24,169 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 100 transitions, 602 flow [2024-06-20 15:48:24,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:24,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:24,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:24,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-20 15:48:24,169 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:24,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:24,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1865433770, now seen corresponding path program 8 times [2024-06-20 15:48:24,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:24,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633279791] [2024-06-20 15:48:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:24,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:26,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:26,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:26,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633279791] [2024-06-20 15:48:26,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633279791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:26,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:26,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:26,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621023111] [2024-06-20 15:48:26,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:26,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:26,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:26,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:26,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:26,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:26,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 100 transitions, 602 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:26,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:26,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:26,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:26,750 INFO L124 PetriNetUnfolderBase]: 280/598 cut-off events. [2024-06-20 15:48:26,750 INFO L125 PetriNetUnfolderBase]: For 75392/75392 co-relation queries the response was YES. [2024-06-20 15:48:26,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3387 conditions, 598 events. 280/598 cut-off events. For 75392/75392 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2962 event pairs, 82 based on Foata normal form. 6/602 useless extension candidates. Maximal degree in co-relation 3300. Up to 480 conditions per place. [2024-06-20 15:48:26,753 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 84 selfloop transitions, 19 changer transitions 14/119 dead transitions. [2024-06-20 15:48:26,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 119 transitions, 886 flow [2024-06-20 15:48:26,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:26,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-20 15:48:26,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 15:48:26,754 INFO L175 Difference]: Start difference. First operand has 185 places, 100 transitions, 602 flow. Second operand 12 states and 132 transitions. [2024-06-20 15:48:26,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 119 transitions, 886 flow [2024-06-20 15:48:26,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 119 transitions, 846 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:26,842 INFO L231 Difference]: Finished difference. Result has 174 places, 95 transitions, 579 flow [2024-06-20 15:48:26,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=579, PETRI_PLACES=174, PETRI_TRANSITIONS=95} [2024-06-20 15:48:26,842 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-20 15:48:26,842 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 95 transitions, 579 flow [2024-06-20 15:48:26,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:26,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:26,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:26,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-20 15:48:26,842 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:26,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:26,843 INFO L85 PathProgramCache]: Analyzing trace with hash -954808518, now seen corresponding path program 9 times [2024-06-20 15:48:26,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:26,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508431261] [2024-06-20 15:48:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:26,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:28,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:28,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508431261] [2024-06-20 15:48:28,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508431261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:28,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:28,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:28,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655172546] [2024-06-20 15:48:28,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:28,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:28,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:28,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:28,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:28,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:28,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 95 transitions, 579 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:28,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:28,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:28,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:29,369 INFO L124 PetriNetUnfolderBase]: 270/576 cut-off events. [2024-06-20 15:48:29,369 INFO L125 PetriNetUnfolderBase]: For 65156/65156 co-relation queries the response was YES. [2024-06-20 15:48:29,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3210 conditions, 576 events. 270/576 cut-off events. For 65156/65156 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2823 event pairs, 82 based on Foata normal form. 6/580 useless extension candidates. Maximal degree in co-relation 3128. Up to 470 conditions per place. [2024-06-20 15:48:29,373 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 81 selfloop transitions, 19 changer transitions 11/113 dead transitions. [2024-06-20 15:48:29,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 113 transitions, 847 flow [2024-06-20 15:48:29,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:29,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:29,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-20 15:48:29,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-20 15:48:29,373 INFO L175 Difference]: Start difference. First operand has 174 places, 95 transitions, 579 flow. Second operand 12 states and 128 transitions. [2024-06-20 15:48:29,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 113 transitions, 847 flow [2024-06-20 15:48:29,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 113 transitions, 799 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-20 15:48:29,455 INFO L231 Difference]: Finished difference. Result has 165 places, 92 transitions, 557 flow [2024-06-20 15:48:29,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=557, PETRI_PLACES=165, PETRI_TRANSITIONS=92} [2024-06-20 15:48:29,455 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-20 15:48:29,455 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 92 transitions, 557 flow [2024-06-20 15:48:29,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:29,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:29,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:29,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-20 15:48:29,456 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:29,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:29,456 INFO L85 PathProgramCache]: Analyzing trace with hash -954549048, now seen corresponding path program 10 times [2024-06-20 15:48:29,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:29,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452242789] [2024-06-20 15:48:29,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:29,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:31,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:31,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452242789] [2024-06-20 15:48:31,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452242789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:31,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:31,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:31,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913672650] [2024-06-20 15:48:31,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:31,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:31,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:31,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:31,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:31,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 92 transitions, 557 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:31,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:31,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:31,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:31,779 INFO L124 PetriNetUnfolderBase]: 260/558 cut-off events. [2024-06-20 15:48:31,779 INFO L125 PetriNetUnfolderBase]: For 57548/57548 co-relation queries the response was YES. [2024-06-20 15:48:31,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3056 conditions, 558 events. 260/558 cut-off events. For 57548/57548 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2702 event pairs, 78 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 2978. Up to 446 conditions per place. [2024-06-20 15:48:31,783 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 80 selfloop transitions, 18 changer transitions 10/110 dead transitions. [2024-06-20 15:48:31,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 110 transitions, 817 flow [2024-06-20 15:48:31,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:31,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:31,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-20 15:48:31,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-20 15:48:31,783 INFO L175 Difference]: Start difference. First operand has 165 places, 92 transitions, 557 flow. Second operand 12 states and 128 transitions. [2024-06-20 15:48:31,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 110 transitions, 817 flow [2024-06-20 15:48:31,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 110 transitions, 773 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:31,862 INFO L231 Difference]: Finished difference. Result has 161 places, 88 transitions, 533 flow [2024-06-20 15:48:31,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=533, PETRI_PLACES=161, PETRI_TRANSITIONS=88} [2024-06-20 15:48:31,863 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-20 15:48:31,863 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 88 transitions, 533 flow [2024-06-20 15:48:31,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:31,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:31,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:31,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-20 15:48:31,863 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:31,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:31,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1491735652, now seen corresponding path program 11 times [2024-06-20 15:48:31,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:31,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354695165] [2024-06-20 15:48:31,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:31,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:34,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:34,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354695165] [2024-06-20 15:48:34,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354695165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:34,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:34,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:34,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421251362] [2024-06-20 15:48:34,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:34,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:34,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:34,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:34,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:34,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:34,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 88 transitions, 533 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:34,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:34,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:34,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:34,445 INFO L124 PetriNetUnfolderBase]: 233/501 cut-off events. [2024-06-20 15:48:34,445 INFO L125 PetriNetUnfolderBase]: For 43088/43088 co-relation queries the response was YES. [2024-06-20 15:48:34,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2508 conditions, 501 events. 233/501 cut-off events. For 43088/43088 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2334 event pairs, 67 based on Foata normal form. 6/505 useless extension candidates. Maximal degree in co-relation 2432. Up to 409 conditions per place. [2024-06-20 15:48:34,447 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 69 selfloop transitions, 10 changer transitions 24/105 dead transitions. [2024-06-20 15:48:34,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 105 transitions, 781 flow [2024-06-20 15:48:34,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:34,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:34,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-20 15:48:34,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-20 15:48:34,448 INFO L175 Difference]: Start difference. First operand has 161 places, 88 transitions, 533 flow. Second operand 12 states and 125 transitions. [2024-06-20 15:48:34,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 105 transitions, 781 flow [2024-06-20 15:48:34,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 105 transitions, 737 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-20 15:48:34,509 INFO L231 Difference]: Finished difference. Result has 155 places, 78 transitions, 462 flow [2024-06-20 15:48:34,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=462, PETRI_PLACES=155, PETRI_TRANSITIONS=78} [2024-06-20 15:48:34,509 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-20 15:48:34,509 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 78 transitions, 462 flow [2024-06-20 15:48:34,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:34,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:34,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:34,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-20 15:48:34,510 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:34,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:34,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1133345626, now seen corresponding path program 12 times [2024-06-20 15:48:34,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:34,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878270974] [2024-06-20 15:48:34,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:34,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:36,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:36,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:36,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878270974] [2024-06-20 15:48:36,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878270974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:36,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:36,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:36,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015676000] [2024-06-20 15:48:36,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:36,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:36,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:36,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:36,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:36,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:36,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 78 transitions, 462 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:36,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:36,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:36,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:37,305 INFO L124 PetriNetUnfolderBase]: 217/464 cut-off events. [2024-06-20 15:48:37,305 INFO L125 PetriNetUnfolderBase]: For 38845/38845 co-relation queries the response was YES. [2024-06-20 15:48:37,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2319 conditions, 464 events. 217/464 cut-off events. For 38845/38845 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2125 event pairs, 63 based on Foata normal form. 6/469 useless extension candidates. Maximal degree in co-relation 2246. Up to 385 conditions per place. [2024-06-20 15:48:37,308 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 69 selfloop transitions, 12 changer transitions 12/95 dead transitions. [2024-06-20 15:48:37,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 95 transitions, 692 flow [2024-06-20 15:48:37,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-20 15:48:37,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-20 15:48:37,309 INFO L175 Difference]: Start difference. First operand has 155 places, 78 transitions, 462 flow. Second operand 12 states and 124 transitions. [2024-06-20 15:48:37,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 95 transitions, 692 flow [2024-06-20 15:48:37,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 95 transitions, 650 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-20 15:48:37,349 INFO L231 Difference]: Finished difference. Result has 137 places, 74 transitions, 427 flow [2024-06-20 15:48:37,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=427, PETRI_PLACES=137, PETRI_TRANSITIONS=74} [2024-06-20 15:48:37,350 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-20 15:48:37,350 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 74 transitions, 427 flow [2024-06-20 15:48:37,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:37,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:37,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:37,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-20 15:48:37,350 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:37,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:37,350 INFO L85 PathProgramCache]: Analyzing trace with hash 338517644, now seen corresponding path program 13 times [2024-06-20 15:48:37,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:37,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486951032] [2024-06-20 15:48:37,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:37,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:39,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:39,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486951032] [2024-06-20 15:48:39,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486951032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:39,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:39,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:39,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327774170] [2024-06-20 15:48:39,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:39,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:39,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:39,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:39,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:39,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:39,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 74 transitions, 427 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:39,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:39,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:39,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:39,945 INFO L124 PetriNetUnfolderBase]: 208/445 cut-off events. [2024-06-20 15:48:39,945 INFO L125 PetriNetUnfolderBase]: For 29878/29878 co-relation queries the response was YES. [2024-06-20 15:48:39,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2132 conditions, 445 events. 208/445 cut-off events. For 29878/29878 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2006 event pairs, 59 based on Foata normal form. 6/450 useless extension candidates. Maximal degree in co-relation 2068. Up to 296 conditions per place. [2024-06-20 15:48:39,947 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 50 selfloop transitions, 24 changer transitions 14/90 dead transitions. [2024-06-20 15:48:39,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 90 transitions, 643 flow [2024-06-20 15:48:39,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:39,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-20 15:48:39,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-20 15:48:39,948 INFO L175 Difference]: Start difference. First operand has 137 places, 74 transitions, 427 flow. Second operand 12 states and 125 transitions. [2024-06-20 15:48:39,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 90 transitions, 643 flow [2024-06-20 15:48:39,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 90 transitions, 611 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 15:48:39,977 INFO L231 Difference]: Finished difference. Result has 131 places, 69 transitions, 423 flow [2024-06-20 15:48:39,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=423, PETRI_PLACES=131, PETRI_TRANSITIONS=69} [2024-06-20 15:48:39,977 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-20 15:48:39,977 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 69 transitions, 423 flow [2024-06-20 15:48:39,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:39,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:39,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:39,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-20 15:48:39,978 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:39,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:39,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1397886778, now seen corresponding path program 14 times [2024-06-20 15:48:39,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:39,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050530717] [2024-06-20 15:48:39,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:39,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:42,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:42,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:42,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050530717] [2024-06-20 15:48:42,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050530717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:42,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:42,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:42,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966144956] [2024-06-20 15:48:42,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:42,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:42,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:42,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:42,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:42,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:42,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 69 transitions, 423 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:42,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:42,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:42,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:42,914 INFO L124 PetriNetUnfolderBase]: 198/423 cut-off events. [2024-06-20 15:48:42,914 INFO L125 PetriNetUnfolderBase]: For 26436/26436 co-relation queries the response was YES. [2024-06-20 15:48:42,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2041 conditions, 423 events. 198/423 cut-off events. For 26436/26436 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1864 event pairs, 63 based on Foata normal form. 6/428 useless extension candidates. Maximal degree in co-relation 1980. Up to 286 conditions per place. [2024-06-20 15:48:42,916 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 51 selfloop transitions, 21 changer transitions 11/85 dead transitions. [2024-06-20 15:48:42,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 85 transitions, 629 flow [2024-06-20 15:48:42,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:42,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:42,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-20 15:48:42,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-20 15:48:42,917 INFO L175 Difference]: Start difference. First operand has 131 places, 69 transitions, 423 flow. Second operand 12 states and 125 transitions. [2024-06-20 15:48:42,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 85 transitions, 629 flow [2024-06-20 15:48:42,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 85 transitions, 571 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-20 15:48:42,941 INFO L231 Difference]: Finished difference. Result has 123 places, 66 transitions, 395 flow [2024-06-20 15:48:42,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=395, PETRI_PLACES=123, PETRI_TRANSITIONS=66} [2024-06-20 15:48:42,941 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-20 15:48:42,941 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 66 transitions, 395 flow [2024-06-20 15:48:42,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:42,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:42,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:42,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-20 15:48:42,941 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:42,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:42,942 INFO L85 PathProgramCache]: Analyzing trace with hash 2071318186, now seen corresponding path program 15 times [2024-06-20 15:48:42,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:42,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480468492] [2024-06-20 15:48:42,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:42,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:45,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:45,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480468492] [2024-06-20 15:48:45,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480468492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:45,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:45,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:45,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798578133] [2024-06-20 15:48:45,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:45,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:45,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:45,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:45,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:45,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:45,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 66 transitions, 395 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:45,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:45,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:45,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:45,522 INFO L124 PetriNetUnfolderBase]: 173/372 cut-off events. [2024-06-20 15:48:45,523 INFO L125 PetriNetUnfolderBase]: For 16612/16612 co-relation queries the response was YES. [2024-06-20 15:48:45,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1571 conditions, 372 events. 173/372 cut-off events. For 16612/16612 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1583 event pairs, 48 based on Foata normal form. 6/377 useless extension candidates. Maximal degree in co-relation 1514. Up to 302 conditions per place. [2024-06-20 15:48:45,524 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 58 selfloop transitions, 11 changer transitions 11/82 dead transitions. [2024-06-20 15:48:45,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 82 transitions, 595 flow [2024-06-20 15:48:45,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:45,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-20 15:48:45,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-20 15:48:45,525 INFO L175 Difference]: Start difference. First operand has 123 places, 66 transitions, 395 flow. Second operand 12 states and 121 transitions. [2024-06-20 15:48:45,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 82 transitions, 595 flow [2024-06-20 15:48:45,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 82 transitions, 547 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:45,541 INFO L231 Difference]: Finished difference. Result has 119 places, 63 transitions, 357 flow [2024-06-20 15:48:45,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=357, PETRI_PLACES=119, PETRI_TRANSITIONS=63} [2024-06-20 15:48:45,542 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-20 15:48:45,542 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 63 transitions, 357 flow [2024-06-20 15:48:45,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:45,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:45,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:45,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-20 15:48:45,543 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:45,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:45,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1196797528, now seen corresponding path program 16 times [2024-06-20 15:48:45,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:45,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356236967] [2024-06-20 15:48:45,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:45,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:47,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:47,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356236967] [2024-06-20 15:48:47,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356236967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:47,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:47,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:47,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228396676] [2024-06-20 15:48:47,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:47,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:47,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:47,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:47,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:47,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:47,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 63 transitions, 357 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:47,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:47,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:47,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:48,058 INFO L124 PetriNetUnfolderBase]: 148/321 cut-off events. [2024-06-20 15:48:48,058 INFO L125 PetriNetUnfolderBase]: For 10062/10062 co-relation queries the response was YES. [2024-06-20 15:48:48,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 321 events. 148/321 cut-off events. For 10062/10062 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1308 event pairs, 35 based on Foata normal form. 6/326 useless extension candidates. Maximal degree in co-relation 1100. Up to 200 conditions per place. [2024-06-20 15:48:48,060 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 47 selfloop transitions, 17 changer transitions 13/79 dead transitions. [2024-06-20 15:48:48,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 79 transitions, 551 flow [2024-06-20 15:48:48,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:48,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:48,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-20 15:48:48,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-20 15:48:48,060 INFO L175 Difference]: Start difference. First operand has 119 places, 63 transitions, 357 flow. Second operand 12 states and 125 transitions. [2024-06-20 15:48:48,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 79 transitions, 551 flow [2024-06-20 15:48:48,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 79 transitions, 523 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:48,069 INFO L231 Difference]: Finished difference. Result has 114 places, 59 transitions, 346 flow [2024-06-20 15:48:48,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=346, PETRI_PLACES=114, PETRI_TRANSITIONS=59} [2024-06-20 15:48:48,069 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-20 15:48:48,069 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 59 transitions, 346 flow [2024-06-20 15:48:48,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:48,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:48,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:48,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-20 15:48:48,070 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:48,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:48,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1398146248, now seen corresponding path program 17 times [2024-06-20 15:48:48,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:48,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712770323] [2024-06-20 15:48:48,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:48,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:49,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:49,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712770323] [2024-06-20 15:48:49,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712770323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:49,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:49,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:49,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700252558] [2024-06-20 15:48:49,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:49,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:49,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:49,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:49,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:50,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:50,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 59 transitions, 346 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:50,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:50,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:50,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:50,560 INFO L124 PetriNetUnfolderBase]: 139/302 cut-off events. [2024-06-20 15:48:50,560 INFO L125 PetriNetUnfolderBase]: For 9130/9130 co-relation queries the response was YES. [2024-06-20 15:48:50,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 302 events. 139/302 cut-off events. For 9130/9130 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1202 event pairs, 33 based on Foata normal form. 6/307 useless extension candidates. Maximal degree in co-relation 1044. Up to 182 conditions per place. [2024-06-20 15:48:50,561 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 42 selfloop transitions, 14 changer transitions 17/75 dead transitions. [2024-06-20 15:48:50,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 75 transitions, 530 flow [2024-06-20 15:48:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:50,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:50,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-20 15:48:50,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-20 15:48:50,562 INFO L175 Difference]: Start difference. First operand has 114 places, 59 transitions, 346 flow. Second operand 12 states and 123 transitions. [2024-06-20 15:48:50,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 75 transitions, 530 flow [2024-06-20 15:48:50,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 75 transitions, 488 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:50,570 INFO L231 Difference]: Finished difference. Result has 107 places, 53 transitions, 308 flow [2024-06-20 15:48:50,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=308, PETRI_PLACES=107, PETRI_TRANSITIONS=53} [2024-06-20 15:48:50,570 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-20 15:48:50,571 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 53 transitions, 308 flow [2024-06-20 15:48:50,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:50,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:50,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:50,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-20 15:48:50,571 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:50,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:50,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1859422038, now seen corresponding path program 18 times [2024-06-20 15:48:50,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:50,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596798025] [2024-06-20 15:48:50,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:50,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:52,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:52,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:52,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596798025] [2024-06-20 15:48:52,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596798025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:52,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:52,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:52,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897576574] [2024-06-20 15:48:52,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:52,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:52,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:52,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:52,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:52,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:52,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 53 transitions, 308 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:52,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:52,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:52,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:52,708 INFO L124 PetriNetUnfolderBase]: 125/272 cut-off events. [2024-06-20 15:48:52,709 INFO L125 PetriNetUnfolderBase]: For 7778/7778 co-relation queries the response was YES. [2024-06-20 15:48:52,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 272 events. 125/272 cut-off events. For 7778/7778 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1022 event pairs, 31 based on Foata normal form. 6/277 useless extension candidates. Maximal degree in co-relation 938. Up to 202 conditions per place. [2024-06-20 15:48:52,710 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 43 selfloop transitions, 8 changer transitions 16/69 dead transitions. [2024-06-20 15:48:52,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 69 transitions, 480 flow [2024-06-20 15:48:52,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:52,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:52,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-20 15:48:52,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-20 15:48:52,710 INFO L175 Difference]: Start difference. First operand has 107 places, 53 transitions, 308 flow. Second operand 12 states and 120 transitions. [2024-06-20 15:48:52,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 69 transitions, 480 flow [2024-06-20 15:48:52,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 69 transitions, 440 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-20 15:48:52,716 INFO L231 Difference]: Finished difference. Result has 97 places, 48 transitions, 264 flow [2024-06-20 15:48:52,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=264, PETRI_PLACES=97, PETRI_TRANSITIONS=48} [2024-06-20 15:48:52,717 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-20 15:48:52,717 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 48 transitions, 264 flow [2024-06-20 15:48:52,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:52,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:52,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:52,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-20 15:48:52,717 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:52,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:52,717 INFO L85 PathProgramCache]: Analyzing trace with hash 610927274, now seen corresponding path program 19 times [2024-06-20 15:48:52,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:52,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264261184] [2024-06-20 15:48:52,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:52,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:54,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:54,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264261184] [2024-06-20 15:48:54,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264261184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:54,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:54,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:54,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324797294] [2024-06-20 15:48:54,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:54,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:54,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:54,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:54,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:54,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:54,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 48 transitions, 264 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:54,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:54,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:54,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:54,969 INFO L124 PetriNetUnfolderBase]: 112/245 cut-off events. [2024-06-20 15:48:54,969 INFO L125 PetriNetUnfolderBase]: For 5748/5748 co-relation queries the response was YES. [2024-06-20 15:48:54,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 245 events. 112/245 cut-off events. For 5748/5748 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 877 event pairs, 27 based on Foata normal form. 6/250 useless extension candidates. Maximal degree in co-relation 822. Up to 176 conditions per place. [2024-06-20 15:48:54,970 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 37 selfloop transitions, 6 changer transitions 19/64 dead transitions. [2024-06-20 15:48:54,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 64 transitions, 424 flow [2024-06-20 15:48:54,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:54,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-20 15:48:54,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-20 15:48:54,971 INFO L175 Difference]: Start difference. First operand has 97 places, 48 transitions, 264 flow. Second operand 12 states and 118 transitions. [2024-06-20 15:48:54,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 64 transitions, 424 flow [2024-06-20 15:48:54,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 64 transitions, 398 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-20 15:48:54,976 INFO L231 Difference]: Finished difference. Result has 89 places, 42 transitions, 225 flow [2024-06-20 15:48:54,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=225, PETRI_PLACES=89, PETRI_TRANSITIONS=42} [2024-06-20 15:48:54,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-06-20 15:48:54,976 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 42 transitions, 225 flow [2024-06-20 15:48:54,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:54,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:54,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:54,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-20 15:48:54,977 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:54,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:54,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1414413964, now seen corresponding path program 20 times [2024-06-20 15:48:54,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:54,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892710257] [2024-06-20 15:48:54,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:54,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:56,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:56,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892710257] [2024-06-20 15:48:56,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892710257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:56,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:56,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:56,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472234374] [2024-06-20 15:48:56,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:56,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:56,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:56,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:56,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:56,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:56,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 42 transitions, 225 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:56,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:56,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:56,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:48:57,123 INFO L124 PetriNetUnfolderBase]: 95/210 cut-off events. [2024-06-20 15:48:57,123 INFO L125 PetriNetUnfolderBase]: For 4354/4354 co-relation queries the response was YES. [2024-06-20 15:48:57,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 210 events. 95/210 cut-off events. For 4354/4354 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 692 event pairs, 21 based on Foata normal form. 6/215 useless extension candidates. Maximal degree in co-relation 700. Up to 136 conditions per place. [2024-06-20 15:48:57,124 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 30 selfloop transitions, 4 changer transitions 22/58 dead transitions. [2024-06-20 15:48:57,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 58 transitions, 371 flow [2024-06-20 15:48:57,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:48:57,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:48:57,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-20 15:48:57,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31451612903225806 [2024-06-20 15:48:57,125 INFO L175 Difference]: Start difference. First operand has 89 places, 42 transitions, 225 flow. Second operand 12 states and 117 transitions. [2024-06-20 15:48:57,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 58 transitions, 371 flow [2024-06-20 15:48:57,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 58 transitions, 349 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-20 15:48:57,129 INFO L231 Difference]: Finished difference. Result has 80 places, 34 transitions, 179 flow [2024-06-20 15:48:57,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=179, PETRI_PLACES=80, PETRI_TRANSITIONS=34} [2024-06-20 15:48:57,129 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-20 15:48:57,129 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 34 transitions, 179 flow [2024-06-20 15:48:57,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:57,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:48:57,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:48:57,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-20 15:48:57,130 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:48:57,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:48:57,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1204901236, now seen corresponding path program 21 times [2024-06-20 15:48:57,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:48:57,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061196898] [2024-06-20 15:48:57,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:48:57,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:48:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:48:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:48:59,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:48:59,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061196898] [2024-06-20 15:48:59,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061196898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:48:59,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:48:59,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:48:59,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918285956] [2024-06-20 15:48:59,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:48:59,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:48:59,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:48:59,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:48:59,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:48:59,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:48:59,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 34 transitions, 179 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:48:59,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:48:59,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:48:59,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:00,151 INFO L124 PetriNetUnfolderBase]: 74/167 cut-off events. [2024-06-20 15:49:00,151 INFO L125 PetriNetUnfolderBase]: For 3152/3152 co-relation queries the response was YES. [2024-06-20 15:49:00,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 167 events. 74/167 cut-off events. For 3152/3152 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 498 event pairs, 19 based on Foata normal form. 6/172 useless extension candidates. Maximal degree in co-relation 558. Up to 88 conditions per place. [2024-06-20 15:49:00,152 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 25 selfloop transitions, 11 changer transitions 11/49 dead transitions. [2024-06-20 15:49:00,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 49 transitions, 309 flow [2024-06-20 15:49:00,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:49:00,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:49:00,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-20 15:49:00,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30913978494623656 [2024-06-20 15:49:00,153 INFO L175 Difference]: Start difference. First operand has 80 places, 34 transitions, 179 flow. Second operand 12 states and 115 transitions. [2024-06-20 15:49:00,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 49 transitions, 309 flow [2024-06-20 15:49:00,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 49 transitions, 281 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-20 15:49:00,155 INFO L231 Difference]: Finished difference. Result has 67 places, 31 transitions, 166 flow [2024-06-20 15:49:00,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=166, PETRI_PLACES=67, PETRI_TRANSITIONS=31} [2024-06-20 15:49:00,156 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-20 15:49:00,156 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 31 transitions, 166 flow [2024-06-20 15:49:00,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:00,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:00,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:00,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-20 15:49:00,156 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:49:00,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:00,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1416797384, now seen corresponding path program 22 times [2024-06-20 15:49:00,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:00,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391515746] [2024-06-20 15:49:00,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:00,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:02,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:02,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:02,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391515746] [2024-06-20 15:49:02,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391515746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:02,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:02,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:49:02,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039649849] [2024-06-20 15:49:02,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:02,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:49:02,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:02,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:49:02,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:49:02,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:49:02,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 31 transitions, 166 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:02,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:02,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:49:02,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:03,013 INFO L124 PetriNetUnfolderBase]: 64/149 cut-off events. [2024-06-20 15:49:03,013 INFO L125 PetriNetUnfolderBase]: For 1960/1960 co-relation queries the response was YES. [2024-06-20 15:49:03,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 149 events. 64/149 cut-off events. For 1960/1960 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 423 event pairs, 15 based on Foata normal form. 6/154 useless extension candidates. Maximal degree in co-relation 484. Up to 64 conditions per place. [2024-06-20 15:49:03,013 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 24 selfloop transitions, 10 changer transitions 10/46 dead transitions. [2024-06-20 15:49:03,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 46 transitions, 286 flow [2024-06-20 15:49:03,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:49:03,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:49:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-20 15:49:03,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30913978494623656 [2024-06-20 15:49:03,014 INFO L175 Difference]: Start difference. First operand has 67 places, 31 transitions, 166 flow. Second operand 12 states and 115 transitions. [2024-06-20 15:49:03,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 46 transitions, 286 flow [2024-06-20 15:49:03,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 46 transitions, 258 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 15:49:03,016 INFO L231 Difference]: Finished difference. Result has 63 places, 27 transitions, 142 flow [2024-06-20 15:49:03,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=142, PETRI_PLACES=63, PETRI_TRANSITIONS=27} [2024-06-20 15:49:03,016 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-20 15:49:03,016 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 27 transitions, 142 flow [2024-06-20 15:49:03,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:03,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:03,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:03,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-20 15:49:03,016 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:49:03,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:03,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1405990486, now seen corresponding path program 23 times [2024-06-20 15:49:03,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:03,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944482390] [2024-06-20 15:49:03,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:03,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:04,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:04,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944482390] [2024-06-20 15:49:04,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944482390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:04,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:04,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:49:04,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612854815] [2024-06-20 15:49:04,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:04,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:49:04,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:04,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:49:04,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:49:04,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:49:04,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 27 transitions, 142 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:04,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:04,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:49:04,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:04,985 INFO L124 PetriNetUnfolderBase]: 52/125 cut-off events. [2024-06-20 15:49:04,985 INFO L125 PetriNetUnfolderBase]: For 1530/1530 co-relation queries the response was YES. [2024-06-20 15:49:04,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 125 events. 52/125 cut-off events. For 1530/1530 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 311 event pairs, 23 based on Foata normal form. 6/130 useless extension candidates. Maximal degree in co-relation 408. Up to 60 conditions per place. [2024-06-20 15:49:04,986 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 6 changer transitions 13/39 dead transitions. [2024-06-20 15:49:04,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 39 transitions, 242 flow [2024-06-20 15:49:04,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 15:49:04,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 15:49:04,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-20 15:49:04,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-20 15:49:04,987 INFO L175 Difference]: Start difference. First operand has 63 places, 27 transitions, 142 flow. Second operand 11 states and 104 transitions. [2024-06-20 15:49:04,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 39 transitions, 242 flow [2024-06-20 15:49:04,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 39 transitions, 214 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-20 15:49:04,988 INFO L231 Difference]: Finished difference. Result has 56 places, 22 transitions, 106 flow [2024-06-20 15:49:04,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=106, PETRI_PLACES=56, PETRI_TRANSITIONS=22} [2024-06-20 15:49:04,989 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-06-20 15:49:04,989 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 22 transitions, 106 flow [2024-06-20 15:49:04,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:04,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 15:49:04,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:04,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-20 15:49:04,989 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 15:49:04,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 15:49:04,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1629675148, now seen corresponding path program 24 times [2024-06-20 15:49:04,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 15:49:04,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599260862] [2024-06-20 15:49:04,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 15:49:04,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 15:49:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 15:49:06,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 15:49:06,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 15:49:06,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599260862] [2024-06-20 15:49:06,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599260862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 15:49:06,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 15:49:06,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 15:49:06,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092258483] [2024-06-20 15:49:06,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 15:49:06,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 15:49:06,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 15:49:06,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 15:49:06,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-20 15:49:06,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 15:49:06,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 22 transitions, 106 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:06,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 15:49:06,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 15:49:06,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 15:49:06,792 INFO L124 PetriNetUnfolderBase]: 27/70 cut-off events. [2024-06-20 15:49:06,792 INFO L125 PetriNetUnfolderBase]: For 510/510 co-relation queries the response was YES. [2024-06-20 15:49:06,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 70 events. 27/70 cut-off events. For 510/510 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 0 based on Foata normal form. 6/75 useless extension candidates. Maximal degree in co-relation 180. Up to 24 conditions per place. [2024-06-20 15:49:06,793 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2024-06-20 15:49:06,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 32 transitions, 160 flow [2024-06-20 15:49:06,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 15:49:06,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 15:49:06,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 103 transitions. [2024-06-20 15:49:06,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2768817204301075 [2024-06-20 15:49:06,793 INFO L175 Difference]: Start difference. First operand has 56 places, 22 transitions, 106 flow. Second operand 12 states and 103 transitions. [2024-06-20 15:49:06,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 32 transitions, 160 flow [2024-06-20 15:49:06,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 32 transitions, 130 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-20 15:49:06,794 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2024-06-20 15:49:06,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2024-06-20 15:49:06,794 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-20 15:49:06,794 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2024-06-20 15:49:06,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 15:49:06,796 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-20 15:49:06,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-20 15:49:06,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-20 15:49:06,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-20 15:49:06,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-20 15:49:06,808 INFO L445 BasicCegarLoop]: Path program histogram: [46, 30, 24, 21, 20, 17, 15, 10, 7, 6, 6, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 15:49:06,810 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 15:49:06,811 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 15:49:06,814 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-20 15:49:06,814 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-20 15:49:06,816 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 03:49:06 BasicIcfg [2024-06-20 15:49:06,816 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 15:49:06,816 INFO L158 Benchmark]: Toolchain (without parser) took 523006.23ms. Allocated memory was 155.2MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 120.5MB in the beginning and 871.4MB in the end (delta: -750.9MB). Peak memory consumption was 652.8MB. Max. memory is 16.1GB. [2024-06-20 15:49:06,818 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 15:49:06,819 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 15:49:06,819 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.26ms. Allocated memory is still 155.2MB. Free memory was 119.9MB in the beginning and 84.8MB in the end (delta: 35.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-20 15:49:06,819 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.48ms. Allocated memory is still 155.2MB. Free memory was 84.8MB in the beginning and 81.4MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 15:49:06,819 INFO L158 Benchmark]: Boogie Preprocessor took 51.22ms. Allocated memory is still 155.2MB. Free memory was 81.4MB in the beginning and 77.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-20 15:49:06,819 INFO L158 Benchmark]: RCFGBuilder took 689.97ms. Allocated memory is still 155.2MB. Free memory was 77.9MB in the beginning and 66.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-06-20 15:49:06,819 INFO L158 Benchmark]: TraceAbstraction took 521690.62ms. Allocated memory was 155.2MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 66.2MB in the beginning and 871.4MB in the end (delta: -805.2MB). Peak memory consumption was 600.6MB. Max. memory is 16.1GB. [2024-06-20 15:49:06,820 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 155.2MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 518.26ms. Allocated memory is still 155.2MB. Free memory was 119.9MB in the beginning and 84.8MB in the end (delta: 35.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.48ms. Allocated memory is still 155.2MB. Free memory was 84.8MB in the beginning and 81.4MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.22ms. Allocated memory is still 155.2MB. Free memory was 81.4MB in the beginning and 77.9MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 689.97ms. Allocated memory is still 155.2MB. Free memory was 77.9MB in the beginning and 66.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 521690.62ms. Allocated memory was 155.2MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 66.2MB in the beginning and 871.4MB in the end (delta: -805.2MB). Peak memory consumption was 600.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 834]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 835]: 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, 50 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: 521.6s, OverallIterations: 231, TraceHistogramMax: 1, PathProgramHistogramMax: 46, EmptinessCheckTime: 0.0s, AutomataDifference: 211.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16221 SdHoareTripleChecker+Valid, 72.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13984 mSDsluCounter, 10055 SdHoareTripleChecker+Invalid, 63.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9174 mSDsCounter, 3953 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119459 IncrementalHoareTripleChecker+Invalid, 123412 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3953 mSolverCounterUnsat, 881 mSDtfsCounter, 119459 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2837 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 2822 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6661 ImplicationChecksByTransitivity, 84.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3338occurred in iteration=106, InterpolantAutomatonStates: 2408, 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: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 306.6s InterpolantComputationTime, 3864 NumberOfCodeBlocks, 3864 NumberOfCodeBlocksAsserted, 231 NumberOfCheckSat, 3633 ConstructedInterpolants, 0 QuantifiedInterpolants, 182390 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 231 InterpolantComputations, 231 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! [2024-06-20 15:49:06,918 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