./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix000.opt.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.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix000.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix000.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 14:32:13,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:32:13,782 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:32:13,785 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:32:13,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:32:13,799 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:32:13,799 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:32:13,799 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:32:13,800 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:32:13,800 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:32:13,800 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:32:13,801 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:32:13,801 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:32:13,802 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:32:13,802 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:32:13,802 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:32:13,802 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:32:13,803 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:32:13,803 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:32:13,803 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:32:13,804 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:32:13,804 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:32:13,805 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:32:13,805 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:32:13,805 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:32:13,805 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:32:13,806 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:32:13,806 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:32:13,806 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:32:13,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:32:13,807 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:32:13,807 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:32:13,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:32:13,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:32:13,808 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:32:13,808 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:32:13,808 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:32:13,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:32:13,809 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:32:13,809 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:32:13,809 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:32:13,809 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:32:13,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:32:13,810 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:32:13,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:32:14,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:32:14,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:32:14,022 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:32:14,022 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:32:14,023 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-04 14:32:15,085 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:32:15,286 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:32:15,289 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-04 14:32:15,304 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e76fac11/cba2b536db3a4fbe8cef94acbeda5398/FLAGfa1e8c8e8 [2024-06-04 14:32:15,314 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e76fac11/cba2b536db3a4fbe8cef94acbeda5398 [2024-06-04 14:32:15,316 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:32:15,317 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:32:15,317 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix000.opt.yml/witness.yml [2024-06-04 14:32:15,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:32:15,417 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:32:15,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:32:15,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:32:15,428 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:32:15,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:32:15" (1/2) ... [2024-06-04 14:32:15,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3b1064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:32:15, skipping insertion in model container [2024-06-04 14:32:15,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:32:15" (1/2) ... [2024-06-04 14:32:15,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@35d160d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:32:15, skipping insertion in model container [2024-06-04 14:32:15,432 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:32:15" (2/2) ... [2024-06-04 14:32:15,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3b1064 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:15, skipping insertion in model container [2024-06-04 14:32:15,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:32:15" (2/2) ... [2024-06-04 14:32:15,432 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:32:15,486 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:32:15,487 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-04 14:32:15,487 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-04 14:32:15,488 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:32:15,488 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-04 14:32:15,525 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:32:15,809 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:32:15,827 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:32:15,920 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:32:15,956 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:32:15,956 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:15 WrapperNode [2024-06-04 14:32:15,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:32:15,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:32:15,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:32:15,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:32:15,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:15" (1/1) ... [2024-06-04 14:32:15,980 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:15" (1/1) ... [2024-06-04 14:32:16,010 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-04 14:32:16,011 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:32:16,011 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:32:16,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:32:16,012 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:32:16,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:15" (1/1) ... [2024-06-04 14:32:16,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:15" (1/1) ... [2024-06-04 14:32:16,023 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:15" (1/1) ... [2024-06-04 14:32:16,034 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-04 14:32:16,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:15" (1/1) ... [2024-06-04 14:32:16,035 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:15" (1/1) ... [2024-06-04 14:32:16,042 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:15" (1/1) ... [2024-06-04 14:32:16,046 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:15" (1/1) ... [2024-06-04 14:32:16,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:15" (1/1) ... [2024-06-04 14:32:16,051 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:15" (1/1) ... [2024-06-04 14:32:16,054 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:32:16,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:32:16,062 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:32:16,062 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:32:16,063 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:15" (1/1) ... [2024-06-04 14:32:16,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:32:16,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:32:16,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-04 14:32:16,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-04 14:32:16,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:32:16,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:32:16,128 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 14:32:16,129 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 14:32:16,129 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 14:32:16,129 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 14:32:16,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:32:16,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:32:16,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:32:16,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:32:16,131 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 14:32:16,265 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:32:16,266 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:32:16,578 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:32:16,578 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:32:16,741 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:32:16,742 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 14:32:16,744 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:32:16 BoogieIcfgContainer [2024-06-04 14:32:16,744 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:32:16,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:32:16,747 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:32:16,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:32:16,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:32:15" (1/4) ... [2024-06-04 14:32:16,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e51525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:32:16, skipping insertion in model container [2024-06-04 14:32:16,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:32:15" (2/4) ... [2024-06-04 14:32:16,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e51525 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:32:16, skipping insertion in model container [2024-06-04 14:32:16,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:32:15" (3/4) ... [2024-06-04 14:32:16,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e51525 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:32:16, skipping insertion in model container [2024-06-04 14:32:16,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:32:16" (4/4) ... [2024-06-04 14:32:16,756 INFO L112 eAbstractionObserver]: Analyzing ICFG mix000.opt.i [2024-06-04 14:32:16,768 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:32:16,769 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 14:32:16,769 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:32:16,797 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 14:32:16,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 14:32:16,850 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-04 14:32:16,850 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:32:16,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 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. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 14:32:16,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 14:32:16,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-04 14:32:16,866 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:32:16,872 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;@32753b05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:32:16,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 14:32:16,877 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:32:16,877 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-04 14:32:16,877 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:32:16,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:16,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 14:32:16,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:16,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:16,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1642904383, now seen corresponding path program 1 times [2024-06-04 14:32:16,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:16,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821049019] [2024-06-04 14:32:16,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:16,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:17,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:17,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821049019] [2024-06-04 14:32:17,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821049019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:17,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:17,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 14:32:17,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073330358] [2024-06-04 14:32:17,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:17,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:32:17,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:17,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:32:17,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:32:18,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-04 14:32:18,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:18,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:18,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-04 14:32:18,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:18,121 INFO L124 PetriNetUnfolderBase]: 131/262 cut-off events. [2024-06-04 14:32:18,121 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-04 14:32:18,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 262 events. 131/262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1025 event pairs, 75 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 506. Up to 235 conditions per place. [2024-06-04 14:32:18,127 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 22 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-04 14:32:18,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 119 flow [2024-06-04 14:32:18,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:32:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:32:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-06-04 14:32:18,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-04 14:32:18,138 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 57 transitions. [2024-06-04 14:32:18,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 119 flow [2024-06-04 14:32:18,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 14:32:18,142 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-04 14:32:18,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-04 14:32:18,147 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-04 14:32:18,148 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-04 14:32:18,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:18,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:18,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:18,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:32:18,149 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:18,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:18,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1717139950, now seen corresponding path program 1 times [2024-06-04 14:32:18,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:18,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511971490] [2024-06-04 14:32:18,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:18,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:18,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:18,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:18,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511971490] [2024-06-04 14:32:18,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511971490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:18,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:18,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:32:18,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572604200] [2024-06-04 14:32:18,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:18,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:32:18,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:18,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:32:18,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:32:18,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 14:32:18,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:18,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:18,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 14:32:18,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:19,006 INFO L124 PetriNetUnfolderBase]: 186/342 cut-off events. [2024-06-04 14:32:19,006 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-04 14:32:19,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 342 events. 186/342 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1273 event pairs, 94 based on Foata normal form. 2/341 useless extension candidates. Maximal degree in co-relation 771. Up to 319 conditions per place. [2024-06-04 14:32:19,009 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 28 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-04 14:32:19,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 165 flow [2024-06-04 14:32:19,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:32:19,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:32:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-04 14:32:19,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-04 14:32:19,010 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 67 transitions. [2024-06-04 14:32:19,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 165 flow [2024-06-04 14:32:19,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 14:32:19,012 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-04 14:32:19,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-04 14:32:19,013 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-04 14:32:19,013 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-04 14:32:19,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:19,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:19,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:19,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:32:19,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:19,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:19,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1683688252, now seen corresponding path program 1 times [2024-06-04 14:32:19,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:19,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422907250] [2024-06-04 14:32:19,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:19,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:19,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:19,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:19,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422907250] [2024-06-04 14:32:19,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422907250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:19,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:19,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:32:19,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255109492] [2024-06-04 14:32:19,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:19,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:32:19,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:19,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:32:19,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:32:19,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 14:32:19,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:19,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:19,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 14:32:19,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:19,847 INFO L124 PetriNetUnfolderBase]: 180/332 cut-off events. [2024-06-04 14:32:19,847 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-06-04 14:32:19,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 332 events. 180/332 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1220 event pairs, 52 based on Foata normal form. 4/334 useless extension candidates. Maximal degree in co-relation 827. Up to 291 conditions per place. [2024-06-04 14:32:19,849 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-04 14:32:19,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 217 flow [2024-06-04 14:32:19,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:32:19,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:32:19,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-04 14:32:19,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-04 14:32:19,851 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 82 transitions. [2024-06-04 14:32:19,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 217 flow [2024-06-04 14:32:19,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 14:32:19,853 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-04 14:32:19,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-04 14:32:19,854 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-04 14:32:19,854 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-04 14:32:19,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:19,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:19,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:19,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:32:19,855 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:19,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:19,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1621724491, now seen corresponding path program 1 times [2024-06-04 14:32:19,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:19,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400849266] [2024-06-04 14:32:19,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:19,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:20,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:20,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400849266] [2024-06-04 14:32:20,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400849266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:20,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:20,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:32:20,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619500178] [2024-06-04 14:32:20,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:20,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:32:20,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:20,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:32:20,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:32:20,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-04 14:32:20,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:20,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:20,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-04 14:32:20,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:20,602 INFO L124 PetriNetUnfolderBase]: 137/284 cut-off events. [2024-06-04 14:32:20,602 INFO L125 PetriNetUnfolderBase]: For 265/265 co-relation queries the response was YES. [2024-06-04 14:32:20,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 284 events. 137/284 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1097 event pairs, 57 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 749. Up to 243 conditions per place. [2024-06-04 14:32:20,604 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 25 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2024-06-04 14:32:20,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 201 flow [2024-06-04 14:32:20,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:32:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:32:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-04 14:32:20,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-04 14:32:20,606 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 5 states and 74 transitions. [2024-06-04 14:32:20,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 201 flow [2024-06-04 14:32:20,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 186 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 14:32:20,608 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 133 flow [2024-06-04 14:32:20,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-06-04 14:32:20,608 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-04 14:32:20,609 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 133 flow [2024-06-04 14:32:20,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:20,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:20,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:20,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 14:32:20,609 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)] === [2024-06-04 14:32:20,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:20,610 INFO L85 PathProgramCache]: Analyzing trace with hash 2129581982, now seen corresponding path program 1 times [2024-06-04 14:32:20,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:20,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374376791] [2024-06-04 14:32:20,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:20,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:21,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:21,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374376791] [2024-06-04 14:32:21,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374376791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:21,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:21,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:32:21,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120521291] [2024-06-04 14:32:21,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:21,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:32:21,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:21,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:32:21,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:32:21,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 14:32:21,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 133 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2024-06-04 14:32:21,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:21,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 14:32:21,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:21,853 INFO L124 PetriNetUnfolderBase]: 174/321 cut-off events. [2024-06-04 14:32:21,853 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-06-04 14:32:21,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 321 events. 174/321 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1150 event pairs, 29 based on Foata normal form. 4/323 useless extension candidates. Maximal degree in co-relation 922. Up to 262 conditions per place. [2024-06-04 14:32:21,854 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2024-06-04 14:32:21,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 271 flow [2024-06-04 14:32:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:32:21,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:32:21,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-04 14:32:21,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-04 14:32:21,868 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 133 flow. Second operand 7 states and 104 transitions. [2024-06-04 14:32:21,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 271 flow [2024-06-04 14:32:21,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 260 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 14:32:21,879 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 149 flow [2024-06-04 14:32:21,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=149, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-04 14:32:21,880 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-04 14:32:21,880 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 149 flow [2024-06-04 14:32:21,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2024-06-04 14:32:21,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:21,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:21,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 14:32:21,881 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:21,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:21,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1266149862, now seen corresponding path program 1 times [2024-06-04 14:32:21,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:21,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920791461] [2024-06-04 14:32:21,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:21,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:22,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:22,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:22,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920791461] [2024-06-04 14:32:22,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920791461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:22,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:22,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:32:22,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094005832] [2024-06-04 14:32:22,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:22,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:32:22,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:22,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:32:22,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:32:22,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-04 14:32:22,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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) [2024-06-04 14:32:22,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:22,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-04 14:32:22,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:22,902 INFO L124 PetriNetUnfolderBase]: 129/268 cut-off events. [2024-06-04 14:32:22,903 INFO L125 PetriNetUnfolderBase]: For 515/515 co-relation queries the response was YES. [2024-06-04 14:32:22,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 268 events. 129/268 cut-off events. For 515/515 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1014 event pairs, 36 based on Foata normal form. 2/268 useless extension candidates. Maximal degree in co-relation 808. Up to 223 conditions per place. [2024-06-04 14:32:22,904 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 28 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-04 14:32:22,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 245 flow [2024-06-04 14:32:22,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:32:22,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:32:22,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-04 14:32:22,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-04 14:32:22,906 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 149 flow. Second operand 6 states and 86 transitions. [2024-06-04 14:32:22,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 245 flow [2024-06-04 14:32:22,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 223 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 14:32:22,907 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 160 flow [2024-06-04 14:32:22,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-04 14:32:22,908 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-04 14:32:22,908 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 160 flow [2024-06-04 14:32:22,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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) [2024-06-04 14:32:22,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:22,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:22,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 14:32:22,909 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)] === [2024-06-04 14:32:22,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:22,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2075778054, now seen corresponding path program 1 times [2024-06-04 14:32:22,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:22,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237926170] [2024-06-04 14:32:22,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:22,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:23,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:23,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237926170] [2024-06-04 14:32:23,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237926170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:23,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:23,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:32:23,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963517045] [2024-06-04 14:32:23,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:23,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:32:23,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:23,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:32:23,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:32:23,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:23,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:23,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:23,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:23,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:23,666 INFO L124 PetriNetUnfolderBase]: 171/317 cut-off events. [2024-06-04 14:32:23,667 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2024-06-04 14:32:23,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1051 conditions, 317 events. 171/317 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1133 event pairs, 43 based on Foata normal form. 1/316 useless extension candidates. Maximal degree in co-relation 1028. Up to 291 conditions per place. [2024-06-04 14:32:23,668 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 35 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-06-04 14:32:23,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 276 flow [2024-06-04 14:32:23,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:32:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:32:23,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-04 14:32:23,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 14:32:23,670 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 160 flow. Second operand 6 states and 78 transitions. [2024-06-04 14:32:23,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 276 flow [2024-06-04 14:32:23,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 259 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 14:32:23,671 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 176 flow [2024-06-04 14:32:23,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-04 14:32:23,672 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-04 14:32:23,672 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 176 flow [2024-06-04 14:32:23,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:23,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:23,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:23,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 14:32:23,673 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:23,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:23,673 INFO L85 PathProgramCache]: Analyzing trace with hash 595932692, now seen corresponding path program 2 times [2024-06-04 14:32:23,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:23,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880250355] [2024-06-04 14:32:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:23,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:24,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:24,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:24,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880250355] [2024-06-04 14:32:24,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880250355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:24,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:24,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:32:24,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750327386] [2024-06-04 14:32:24,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:24,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:32:24,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:24,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:32:24,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:32:24,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:24,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:24,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:24,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:24,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:24,488 INFO L124 PetriNetUnfolderBase]: 169/315 cut-off events. [2024-06-04 14:32:24,488 INFO L125 PetriNetUnfolderBase]: For 967/970 co-relation queries the response was YES. [2024-06-04 14:32:24,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 315 events. 169/315 cut-off events. For 967/970 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1135 event pairs, 47 based on Foata normal form. 3/315 useless extension candidates. Maximal degree in co-relation 1070. Up to 282 conditions per place. [2024-06-04 14:32:24,490 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-06-04 14:32:24,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 286 flow [2024-06-04 14:32:24,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:32:24,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:32:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-04 14:32:24,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-04 14:32:24,492 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 176 flow. Second operand 6 states and 77 transitions. [2024-06-04 14:32:24,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 286 flow [2024-06-04 14:32:24,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 269 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 14:32:24,493 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 202 flow [2024-06-04 14:32:24,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2024-06-04 14:32:24,494 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-04 14:32:24,494 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 202 flow [2024-06-04 14:32:24,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:24,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:24,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:24,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 14:32:24,495 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:24,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:24,495 INFO L85 PathProgramCache]: Analyzing trace with hash -103213844, now seen corresponding path program 1 times [2024-06-04 14:32:24,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:24,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077702282] [2024-06-04 14:32:24,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:24,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:25,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:25,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:25,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077702282] [2024-06-04 14:32:25,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077702282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:25,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:25,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:32:25,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700343442] [2024-06-04 14:32:25,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:25,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:32:25,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:25,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:32:25,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:32:25,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:25,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 202 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:25,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:25,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:25,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:25,272 INFO L124 PetriNetUnfolderBase]: 187/349 cut-off events. [2024-06-04 14:32:25,272 INFO L125 PetriNetUnfolderBase]: For 1292/1292 co-relation queries the response was YES. [2024-06-04 14:32:25,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1280 conditions, 349 events. 187/349 cut-off events. For 1292/1292 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1285 event pairs, 43 based on Foata normal form. 2/349 useless extension candidates. Maximal degree in co-relation 1255. Up to 298 conditions per place. [2024-06-04 14:32:25,274 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 42 selfloop transitions, 16 changer transitions 0/61 dead transitions. [2024-06-04 14:32:25,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 405 flow [2024-06-04 14:32:25,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:25,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:25,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-04 14:32:25,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-04 14:32:25,276 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 202 flow. Second operand 8 states and 103 transitions. [2024-06-04 14:32:25,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 405 flow [2024-06-04 14:32:25,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 374 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 14:32:25,279 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 277 flow [2024-06-04 14:32:25,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=277, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-04 14:32:25,280 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-04 14:32:25,280 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 277 flow [2024-06-04 14:32:25,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:25,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:25,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:25,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 14:32:25,281 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:25,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:25,281 INFO L85 PathProgramCache]: Analyzing trace with hash 75241350, now seen corresponding path program 2 times [2024-06-04 14:32:25,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:25,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069670681] [2024-06-04 14:32:25,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:25,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:25,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:25,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069670681] [2024-06-04 14:32:25,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069670681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:25,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:25,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:32:25,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109879298] [2024-06-04 14:32:25,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:25,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:32:25,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:25,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:32:25,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:32:25,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:25,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 277 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:25,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:25,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:25,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:26,114 INFO L124 PetriNetUnfolderBase]: 193/361 cut-off events. [2024-06-04 14:32:26,115 INFO L125 PetriNetUnfolderBase]: For 1672/1672 co-relation queries the response was YES. [2024-06-04 14:32:26,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 361 events. 193/361 cut-off events. For 1672/1672 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1354 event pairs, 42 based on Foata normal form. 2/361 useless extension candidates. Maximal degree in co-relation 1403. Up to 300 conditions per place. [2024-06-04 14:32:26,117 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 42 selfloop transitions, 18 changer transitions 0/63 dead transitions. [2024-06-04 14:32:26,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 63 transitions, 453 flow [2024-06-04 14:32:26,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:32:26,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:32:26,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-04 14:32:26,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-04 14:32:26,118 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 277 flow. Second operand 7 states and 92 transitions. [2024-06-04 14:32:26,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 63 transitions, 453 flow [2024-06-04 14:32:26,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 63 transitions, 429 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 14:32:26,121 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 318 flow [2024-06-04 14:32:26,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-06-04 14:32:26,123 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2024-06-04 14:32:26,124 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 318 flow [2024-06-04 14:32:26,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:26,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:26,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:26,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 14:32:26,125 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:26,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:26,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1087392142, now seen corresponding path program 3 times [2024-06-04 14:32:26,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:26,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018166091] [2024-06-04 14:32:26,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:26,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:26,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:26,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018166091] [2024-06-04 14:32:26,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018166091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:26,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:26,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:32:26,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186086594] [2024-06-04 14:32:26,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:26,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:32:26,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:26,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:32:26,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:32:26,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:26,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 318 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:26,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:26,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:26,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:27,085 INFO L124 PetriNetUnfolderBase]: 199/373 cut-off events. [2024-06-04 14:32:27,085 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2024-06-04 14:32:27,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 373 events. 199/373 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1427 event pairs, 44 based on Foata normal form. 2/373 useless extension candidates. Maximal degree in co-relation 1533. Up to 299 conditions per place. [2024-06-04 14:32:27,089 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 40 selfloop transitions, 20 changer transitions 0/63 dead transitions. [2024-06-04 14:32:27,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 490 flow [2024-06-04 14:32:27,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:32:27,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:32:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-04 14:32:27,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-04 14:32:27,092 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 318 flow. Second operand 7 states and 92 transitions. [2024-06-04 14:32:27,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 490 flow [2024-06-04 14:32:27,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 443 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-04 14:32:27,095 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 340 flow [2024-06-04 14:32:27,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=340, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-04 14:32:27,096 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-04 14:32:27,096 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 340 flow [2024-06-04 14:32:27,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:27,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:27,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:27,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 14:32:27,097 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:27,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:27,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1087392359, now seen corresponding path program 1 times [2024-06-04 14:32:27,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:27,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190569148] [2024-06-04 14:32:27,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:27,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:27,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:27,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190569148] [2024-06-04 14:32:27,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190569148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:27,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:27,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:32:27,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128254631] [2024-06-04 14:32:27,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:27,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:32:27,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:27,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:32:27,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:32:27,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:27,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 340 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:27,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:27,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:27,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:28,090 INFO L124 PetriNetUnfolderBase]: 202/378 cut-off events. [2024-06-04 14:32:28,091 INFO L125 PetriNetUnfolderBase]: For 2086/2086 co-relation queries the response was YES. [2024-06-04 14:32:28,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1573 conditions, 378 events. 202/378 cut-off events. For 2086/2086 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1439 event pairs, 41 based on Foata normal form. 1/377 useless extension candidates. Maximal degree in co-relation 1543. Up to 337 conditions per place. [2024-06-04 14:32:28,093 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 49 selfloop transitions, 12 changer transitions 0/64 dead transitions. [2024-06-04 14:32:28,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 502 flow [2024-06-04 14:32:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:32:28,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:32:28,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-04 14:32:28,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-04 14:32:28,094 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 340 flow. Second operand 7 states and 88 transitions. [2024-06-04 14:32:28,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 502 flow [2024-06-04 14:32:28,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 453 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-04 14:32:28,097 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 334 flow [2024-06-04 14:32:28,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=334, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-06-04 14:32:28,098 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-04 14:32:28,098 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 334 flow [2024-06-04 14:32:28,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:28,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:28,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:28,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 14:32:28,099 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:28,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:28,099 INFO L85 PathProgramCache]: Analyzing trace with hash 80955270, now seen corresponding path program 4 times [2024-06-04 14:32:28,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:28,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885984727] [2024-06-04 14:32:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:28,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:28,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:28,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:28,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885984727] [2024-06-04 14:32:28,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885984727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:28,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:28,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:32:28,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203378454] [2024-06-04 14:32:28,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:28,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:32:28,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:28,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:32:28,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:32:28,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:28,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 334 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:28,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:28,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:28,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:28,972 INFO L124 PetriNetUnfolderBase]: 203/383 cut-off events. [2024-06-04 14:32:28,972 INFO L125 PetriNetUnfolderBase]: For 2417/2420 co-relation queries the response was YES. [2024-06-04 14:32:28,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1606 conditions, 383 events. 203/383 cut-off events. For 2417/2420 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1491 event pairs, 49 based on Foata normal form. 2/380 useless extension candidates. Maximal degree in co-relation 1575. Up to 294 conditions per place. [2024-06-04 14:32:28,975 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 24 changer transitions 0/65 dead transitions. [2024-06-04 14:32:28,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 504 flow [2024-06-04 14:32:28,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:32:28,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:32:28,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-04 14:32:28,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 14:32:28,976 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 334 flow. Second operand 7 states and 91 transitions. [2024-06-04 14:32:28,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 504 flow [2024-06-04 14:32:28,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 477 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 14:32:28,979 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 384 flow [2024-06-04 14:32:28,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-06-04 14:32:28,980 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-04 14:32:28,980 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 384 flow [2024-06-04 14:32:28,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:28,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:28,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:28,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 14:32:28,981 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:28,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:28,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1284361729, now seen corresponding path program 2 times [2024-06-04 14:32:28,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:28,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176723749] [2024-06-04 14:32:28,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:28,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:30,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:30,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:30,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176723749] [2024-06-04 14:32:30,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176723749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:30,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:30,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:32:30,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499539157] [2024-06-04 14:32:30,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:30,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:32:30,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:30,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:32:30,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:32:30,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:30,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 384 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:30,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:30,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:30,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:30,223 INFO L124 PetriNetUnfolderBase]: 206/388 cut-off events. [2024-06-04 14:32:30,224 INFO L125 PetriNetUnfolderBase]: For 2792/2795 co-relation queries the response was YES. [2024-06-04 14:32:30,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1716 conditions, 388 events. 206/388 cut-off events. For 2792/2795 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1509 event pairs, 44 based on Foata normal form. 3/387 useless extension candidates. Maximal degree in co-relation 1684. Up to 338 conditions per place. [2024-06-04 14:32:30,226 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 48 selfloop transitions, 15 changer transitions 0/66 dead transitions. [2024-06-04 14:32:30,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 548 flow [2024-06-04 14:32:30,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:32:30,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:32:30,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-04 14:32:30,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-04 14:32:30,227 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 384 flow. Second operand 7 states and 87 transitions. [2024-06-04 14:32:30,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 548 flow [2024-06-04 14:32:30,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 487 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-04 14:32:30,230 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 376 flow [2024-06-04 14:32:30,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=376, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-06-04 14:32:30,231 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-04 14:32:30,231 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 376 flow [2024-06-04 14:32:30,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:30,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:30,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:30,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 14:32:30,232 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:30,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:30,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1294312709, now seen corresponding path program 3 times [2024-06-04 14:32:30,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:30,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951664536] [2024-06-04 14:32:30,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:30,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:31,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:31,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951664536] [2024-06-04 14:32:31,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951664536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:31,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:31,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:32:31,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859899169] [2024-06-04 14:32:31,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:31,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:32:31,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:31,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:32:31,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:32:31,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:31,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 376 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:31,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:31,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:31,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:31,185 INFO L124 PetriNetUnfolderBase]: 204/385 cut-off events. [2024-06-04 14:32:31,185 INFO L125 PetriNetUnfolderBase]: For 2985/2988 co-relation queries the response was YES. [2024-06-04 14:32:31,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 385 events. 204/385 cut-off events. For 2985/2988 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1503 event pairs, 44 based on Foata normal form. 3/384 useless extension candidates. Maximal degree in co-relation 1673. Up to 326 conditions per place. [2024-06-04 14:32:31,187 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 47 selfloop transitions, 20 changer transitions 0/70 dead transitions. [2024-06-04 14:32:31,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 562 flow [2024-06-04 14:32:31,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:32:31,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:32:31,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-04 14:32:31,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-04 14:32:31,189 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 376 flow. Second operand 7 states and 88 transitions. [2024-06-04 14:32:31,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 562 flow [2024-06-04 14:32:31,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 525 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-04 14:32:31,192 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 427 flow [2024-06-04 14:32:31,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2024-06-04 14:32:31,192 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-04 14:32:31,192 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 427 flow [2024-06-04 14:32:31,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:31,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:31,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:31,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 14:32:31,193 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:31,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:31,193 INFO L85 PathProgramCache]: Analyzing trace with hash -390541517, now seen corresponding path program 1 times [2024-06-04 14:32:31,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:31,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358697174] [2024-06-04 14:32:31,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:31,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:31,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:31,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358697174] [2024-06-04 14:32:31,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358697174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:31,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:31,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:31,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470154970] [2024-06-04 14:32:31,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:31,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:31,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:31,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:31,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:31,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:31,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 427 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:31,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:31,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:31,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:32,226 INFO L124 PetriNetUnfolderBase]: 202/381 cut-off events. [2024-06-04 14:32:32,227 INFO L125 PetriNetUnfolderBase]: For 3322/3322 co-relation queries the response was YES. [2024-06-04 14:32:32,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 381 events. 202/381 cut-off events. For 3322/3322 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1481 event pairs, 40 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 1717. Up to 312 conditions per place. [2024-06-04 14:32:32,229 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 18 changer transitions 0/80 dead transitions. [2024-06-04 14:32:32,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 80 transitions, 653 flow [2024-06-04 14:32:32,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:32,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:32,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-04 14:32:32,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 14:32:32,230 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 427 flow. Second operand 8 states and 104 transitions. [2024-06-04 14:32:32,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 80 transitions, 653 flow [2024-06-04 14:32:32,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 623 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-04 14:32:32,234 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 466 flow [2024-06-04 14:32:32,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=466, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-06-04 14:32:32,235 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-04 14:32:32,235 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 466 flow [2024-06-04 14:32:32,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:32,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:32,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:32,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 14:32:32,235 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:32,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:32,236 INFO L85 PathProgramCache]: Analyzing trace with hash -655222065, now seen corresponding path program 1 times [2024-06-04 14:32:32,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:32,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116774850] [2024-06-04 14:32:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:32,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:33,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:33,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116774850] [2024-06-04 14:32:33,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116774850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:33,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:33,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:33,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319569481] [2024-06-04 14:32:33,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:33,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:33,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:33,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:33,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:33,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:33,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 466 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:33,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:33,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:33,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:33,430 INFO L124 PetriNetUnfolderBase]: 208/391 cut-off events. [2024-06-04 14:32:33,430 INFO L125 PetriNetUnfolderBase]: For 3905/3905 co-relation queries the response was YES. [2024-06-04 14:32:33,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1878 conditions, 391 events. 208/391 cut-off events. For 3905/3905 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1535 event pairs, 39 based on Foata normal form. 2/391 useless extension candidates. Maximal degree in co-relation 1841. Up to 316 conditions per place. [2024-06-04 14:32:33,433 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 57 selfloop transitions, 21 changer transitions 0/81 dead transitions. [2024-06-04 14:32:33,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 688 flow [2024-06-04 14:32:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-04 14:32:33,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-04 14:32:33,434 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 466 flow. Second operand 8 states and 103 transitions. [2024-06-04 14:32:33,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 688 flow [2024-06-04 14:32:33,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 81 transitions, 635 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 14:32:33,438 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 492 flow [2024-06-04 14:32:33,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=492, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-06-04 14:32:33,438 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-04 14:32:33,439 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 492 flow [2024-06-04 14:32:33,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:33,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:33,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:33,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 14:32:33,439 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:33,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:33,440 INFO L85 PathProgramCache]: Analyzing trace with hash -650580435, now seen corresponding path program 2 times [2024-06-04 14:32:33,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:33,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769381362] [2024-06-04 14:32:33,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:33,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:34,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:34,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769381362] [2024-06-04 14:32:34,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769381362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:34,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:34,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:34,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56096006] [2024-06-04 14:32:34,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:34,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:34,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:34,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:34,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:34,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:34,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 492 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:34,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:34,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:34,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:34,628 INFO L124 PetriNetUnfolderBase]: 214/401 cut-off events. [2024-06-04 14:32:34,628 INFO L125 PetriNetUnfolderBase]: For 4534/4534 co-relation queries the response was YES. [2024-06-04 14:32:34,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2008 conditions, 401 events. 214/401 cut-off events. For 4534/4534 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1572 event pairs, 41 based on Foata normal form. 2/401 useless extension candidates. Maximal degree in co-relation 1970. Up to 319 conditions per place. [2024-06-04 14:32:34,631 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 56 selfloop transitions, 23 changer transitions 0/82 dead transitions. [2024-06-04 14:32:34,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 718 flow [2024-06-04 14:32:34,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:34,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:34,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-04 14:32:34,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-04 14:32:34,632 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 492 flow. Second operand 8 states and 103 transitions. [2024-06-04 14:32:34,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 718 flow [2024-06-04 14:32:34,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 663 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 14:32:34,638 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 525 flow [2024-06-04 14:32:34,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=525, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2024-06-04 14:32:34,638 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-04 14:32:34,638 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 525 flow [2024-06-04 14:32:34,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:34,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:34,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:34,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 14:32:34,639 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:34,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:34,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1957835775, now seen corresponding path program 3 times [2024-06-04 14:32:34,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:34,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618973524] [2024-06-04 14:32:34,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:34,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:35,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:35,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618973524] [2024-06-04 14:32:35,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618973524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:35,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:35,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:35,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371461728] [2024-06-04 14:32:35,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:35,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:35,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:35,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:35,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:35,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:35,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 525 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:35,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:35,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:35,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:35,684 INFO L124 PetriNetUnfolderBase]: 217/406 cut-off events. [2024-06-04 14:32:35,685 INFO L125 PetriNetUnfolderBase]: For 5020/5020 co-relation queries the response was YES. [2024-06-04 14:32:35,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2107 conditions, 406 events. 217/406 cut-off events. For 5020/5020 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1605 event pairs, 41 based on Foata normal form. 1/405 useless extension candidates. Maximal degree in co-relation 2068. Up to 308 conditions per place. [2024-06-04 14:32:35,687 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 51 selfloop transitions, 29 changer transitions 0/83 dead transitions. [2024-06-04 14:32:35,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 739 flow [2024-06-04 14:32:35,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-04 14:32:35,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-04 14:32:35,689 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 525 flow. Second operand 8 states and 103 transitions. [2024-06-04 14:32:35,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 739 flow [2024-06-04 14:32:35,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 673 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 14:32:35,699 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 546 flow [2024-06-04 14:32:35,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=546, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2024-06-04 14:32:35,700 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-04 14:32:35,700 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 546 flow [2024-06-04 14:32:35,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:35,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:35,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:35,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 14:32:35,701 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:35,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:35,701 INFO L85 PathProgramCache]: Analyzing trace with hash -650573677, now seen corresponding path program 1 times [2024-06-04 14:32:35,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:35,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161681940] [2024-06-04 14:32:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:35,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:36,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:36,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161681940] [2024-06-04 14:32:36,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161681940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:36,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:36,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:36,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337868133] [2024-06-04 14:32:36,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:36,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:36,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:36,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:36,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:36,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:36,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 546 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:36,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:36,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:36,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:36,849 INFO L124 PetriNetUnfolderBase]: 220/411 cut-off events. [2024-06-04 14:32:36,850 INFO L125 PetriNetUnfolderBase]: For 5426/5426 co-relation queries the response was YES. [2024-06-04 14:32:36,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 411 events. 220/411 cut-off events. For 5426/5426 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1629 event pairs, 38 based on Foata normal form. 1/410 useless extension candidates. Maximal degree in co-relation 2143. Up to 365 conditions per place. [2024-06-04 14:32:36,852 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 14 changer transitions 0/85 dead transitions. [2024-06-04 14:32:36,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 85 transitions, 758 flow [2024-06-04 14:32:36,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:36,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:36,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-04 14:32:36,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-04 14:32:36,855 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 546 flow. Second operand 8 states and 98 transitions. [2024-06-04 14:32:36,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 85 transitions, 758 flow [2024-06-04 14:32:36,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 85 transitions, 687 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 14:32:36,861 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 528 flow [2024-06-04 14:32:36,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=528, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-06-04 14:32:36,861 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-04 14:32:36,861 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 528 flow [2024-06-04 14:32:36,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:36,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:36,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:36,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 14:32:36,862 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:36,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:36,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1460708909, now seen corresponding path program 4 times [2024-06-04 14:32:36,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:36,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015093938] [2024-06-04 14:32:36,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:36,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:37,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:37,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:37,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015093938] [2024-06-04 14:32:37,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015093938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:37,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:37,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:37,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115310010] [2024-06-04 14:32:37,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:37,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:37,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:37,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:37,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:37,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:37,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 528 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:37,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:37,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:37,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:37,983 INFO L124 PetriNetUnfolderBase]: 226/422 cut-off events. [2024-06-04 14:32:37,984 INFO L125 PetriNetUnfolderBase]: For 6147/6150 co-relation queries the response was YES. [2024-06-04 14:32:37,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 422 events. 226/422 cut-off events. For 6147/6150 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1680 event pairs, 46 based on Foata normal form. 2/419 useless extension candidates. Maximal degree in co-relation 2216. Up to 327 conditions per place. [2024-06-04 14:32:37,986 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 57 selfloop transitions, 27 changer transitions 0/87 dead transitions. [2024-06-04 14:32:37,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 87 transitions, 776 flow [2024-06-04 14:32:37,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:37,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:37,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-04 14:32:37,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-04 14:32:37,988 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 528 flow. Second operand 8 states and 102 transitions. [2024-06-04 14:32:37,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 87 transitions, 776 flow [2024-06-04 14:32:37,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 87 transitions, 739 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 14:32:37,993 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 597 flow [2024-06-04 14:32:37,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=597, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2024-06-04 14:32:37,994 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-04 14:32:37,994 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 597 flow [2024-06-04 14:32:37,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:37,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:37,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:37,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 14:32:37,995 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:37,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:37,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1460715667, now seen corresponding path program 2 times [2024-06-04 14:32:37,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:37,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194057867] [2024-06-04 14:32:37,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:37,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:38,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:38,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:38,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194057867] [2024-06-04 14:32:38,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194057867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:38,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:38,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:38,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895122563] [2024-06-04 14:32:38,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:38,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:38,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:38,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:38,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:38,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:38,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 597 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:38,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:38,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:38,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:39,126 INFO L124 PetriNetUnfolderBase]: 229/427 cut-off events. [2024-06-04 14:32:39,127 INFO L125 PetriNetUnfolderBase]: For 6718/6721 co-relation queries the response was YES. [2024-06-04 14:32:39,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2394 conditions, 427 events. 229/427 cut-off events. For 6718/6721 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1706 event pairs, 41 based on Foata normal form. 3/426 useless extension candidates. Maximal degree in co-relation 2352. Up to 374 conditions per place. [2024-06-04 14:32:39,130 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 17 changer transitions 0/88 dead transitions. [2024-06-04 14:32:39,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 88 transitions, 813 flow [2024-06-04 14:32:39,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:39,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:39,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-04 14:32:39,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-04 14:32:39,131 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 597 flow. Second operand 8 states and 97 transitions. [2024-06-04 14:32:39,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 88 transitions, 813 flow [2024-06-04 14:32:39,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 729 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-04 14:32:39,139 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 576 flow [2024-06-04 14:32:39,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=576, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2024-06-04 14:32:39,140 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-04 14:32:39,140 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 576 flow [2024-06-04 14:32:39,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:39,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:39,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:39,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 14:32:39,140 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:39,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:39,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1469286547, now seen corresponding path program 3 times [2024-06-04 14:32:39,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:39,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334925874] [2024-06-04 14:32:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:39,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:39,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:39,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:39,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334925874] [2024-06-04 14:32:39,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334925874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:39,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:39,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:39,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270339505] [2024-06-04 14:32:39,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:39,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:39,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:39,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:39,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:40,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:40,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 576 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:40,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:40,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:40,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:40,339 INFO L124 PetriNetUnfolderBase]: 232/431 cut-off events. [2024-06-04 14:32:40,339 INFO L125 PetriNetUnfolderBase]: For 7126/7126 co-relation queries the response was YES. [2024-06-04 14:32:40,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2412 conditions, 431 events. 232/431 cut-off events. For 7126/7126 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1712 event pairs, 42 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 2369. Up to 395 conditions per place. [2024-06-04 14:32:40,342 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 76 selfloop transitions, 12 changer transitions 0/91 dead transitions. [2024-06-04 14:32:40,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 91 transitions, 808 flow [2024-06-04 14:32:40,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:40,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:40,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-04 14:32:40,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-04 14:32:40,344 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 576 flow. Second operand 8 states and 95 transitions. [2024-06-04 14:32:40,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 91 transitions, 808 flow [2024-06-04 14:32:40,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 91 transitions, 761 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 14:32:40,350 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 603 flow [2024-06-04 14:32:40,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=603, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2024-06-04 14:32:40,351 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-04 14:32:40,351 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 603 flow [2024-06-04 14:32:40,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:40,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:40,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:40,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 14:32:40,352 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:40,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:40,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1468989629, now seen corresponding path program 5 times [2024-06-04 14:32:40,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:40,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027802276] [2024-06-04 14:32:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:40,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:41,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:41,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:41,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027802276] [2024-06-04 14:32:41,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027802276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:41,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:41,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:41,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521246239] [2024-06-04 14:32:41,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:41,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:41,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:41,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:41,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:41,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:41,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 603 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:41,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:41,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:41,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:41,447 INFO L124 PetriNetUnfolderBase]: 235/437 cut-off events. [2024-06-04 14:32:41,447 INFO L125 PetriNetUnfolderBase]: For 7831/7834 co-relation queries the response was YES. [2024-06-04 14:32:41,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2489 conditions, 437 events. 235/437 cut-off events. For 7831/7834 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1749 event pairs, 46 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2444. Up to 304 conditions per place. [2024-06-04 14:32:41,451 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 51 selfloop transitions, 43 changer transitions 0/97 dead transitions. [2024-06-04 14:32:41,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 97 transitions, 925 flow [2024-06-04 14:32:41,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:41,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:41,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-04 14:32:41,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 14:32:41,453 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 603 flow. Second operand 8 states and 104 transitions. [2024-06-04 14:32:41,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 97 transitions, 925 flow [2024-06-04 14:32:41,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 878 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-04 14:32:41,491 INFO L231 Difference]: Finished difference. Result has 96 places, 87 transitions, 733 flow [2024-06-04 14:32:41,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=733, PETRI_PLACES=96, PETRI_TRANSITIONS=87} [2024-06-04 14:32:41,491 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-04 14:32:41,492 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 87 transitions, 733 flow [2024-06-04 14:32:41,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:41,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:41,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:41,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 14:32:41,493 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:41,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:41,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1468989877, now seen corresponding path program 4 times [2024-06-04 14:32:41,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:41,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165113647] [2024-06-04 14:32:41,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:41,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:42,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:42,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165113647] [2024-06-04 14:32:42,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165113647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:42,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:42,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:42,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703314747] [2024-06-04 14:32:42,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:42,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:42,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:42,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:42,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:42,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:42,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 87 transitions, 733 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:42,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:42,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:42,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:42,638 INFO L124 PetriNetUnfolderBase]: 233/434 cut-off events. [2024-06-04 14:32:42,639 INFO L125 PetriNetUnfolderBase]: For 8503/8506 co-relation queries the response was YES. [2024-06-04 14:32:42,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2639 conditions, 434 events. 233/434 cut-off events. For 8503/8506 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1753 event pairs, 41 based on Foata normal form. 3/433 useless extension candidates. Maximal degree in co-relation 2591. Up to 360 conditions per place. [2024-06-04 14:32:42,642 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 27 changer transitions 0/98 dead transitions. [2024-06-04 14:32:42,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 977 flow [2024-06-04 14:32:42,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:42,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-04 14:32:42,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 14:32:42,643 INFO L175 Difference]: Start difference. First operand has 96 places, 87 transitions, 733 flow. Second operand 8 states and 100 transitions. [2024-06-04 14:32:42,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 977 flow [2024-06-04 14:32:42,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 98 transitions, 917 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-04 14:32:42,652 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 764 flow [2024-06-04 14:32:42,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=764, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2024-06-04 14:32:42,652 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-04 14:32:42,653 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 764 flow [2024-06-04 14:32:42,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:42,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:42,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:42,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 14:32:42,653 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:42,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:42,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1460715419, now seen corresponding path program 6 times [2024-06-04 14:32:42,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:42,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088720532] [2024-06-04 14:32:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:42,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:43,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:43,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088720532] [2024-06-04 14:32:43,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088720532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:43,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:43,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:32:43,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29583006] [2024-06-04 14:32:43,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:43,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:32:43,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:43,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:32:43,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:32:43,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:43,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 764 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:43,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:43,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:43,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:43,687 INFO L124 PetriNetUnfolderBase]: 231/431 cut-off events. [2024-06-04 14:32:43,687 INFO L125 PetriNetUnfolderBase]: For 8679/8682 co-relation queries the response was YES. [2024-06-04 14:32:43,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2652 conditions, 431 events. 231/431 cut-off events. For 8679/8682 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1736 event pairs, 46 based on Foata normal form. 1/427 useless extension candidates. Maximal degree in co-relation 2602. Up to 330 conditions per place. [2024-06-04 14:32:43,690 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 30 changer transitions 0/99 dead transitions. [2024-06-04 14:32:43,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 99 transitions, 1008 flow [2024-06-04 14:32:43,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:32:43,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:32:43,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-04 14:32:43,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 14:32:43,692 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 764 flow. Second operand 8 states and 104 transitions. [2024-06-04 14:32:43,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 99 transitions, 1008 flow [2024-06-04 14:32:43,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 99 transitions, 933 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 14:32:43,700 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 754 flow [2024-06-04 14:32:43,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=754, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2024-06-04 14:32:43,701 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-04 14:32:43,701 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 754 flow [2024-06-04 14:32:43,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:43,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:43,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:43,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 14:32:43,701 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:43,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:43,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1469297459, now seen corresponding path program 1 times [2024-06-04 14:32:43,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:43,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881303412] [2024-06-04 14:32:43,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:43,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:45,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:45,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:45,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881303412] [2024-06-04 14:32:45,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881303412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:45,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:45,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:45,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171307648] [2024-06-04 14:32:45,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:45,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:45,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:45,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:45,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:45,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 14:32:45,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 754 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-04 14:32:45,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:45,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 14:32:45,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:45,483 INFO L124 PetriNetUnfolderBase]: 213/408 cut-off events. [2024-06-04 14:32:45,483 INFO L125 PetriNetUnfolderBase]: For 8885/8890 co-relation queries the response was YES. [2024-06-04 14:32:45,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2485 conditions, 408 events. 213/408 cut-off events. For 8885/8890 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1663 event pairs, 39 based on Foata normal form. 7/412 useless extension candidates. Maximal degree in co-relation 2434. Up to 338 conditions per place. [2024-06-04 14:32:45,486 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 71 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2024-06-04 14:32:45,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 99 transitions, 946 flow [2024-06-04 14:32:45,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:45,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-04 14:32:45,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 14:32:45,487 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 754 flow. Second operand 9 states and 112 transitions. [2024-06-04 14:32:45,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 99 transitions, 946 flow [2024-06-04 14:32:45,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 831 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-04 14:32:45,496 INFO L231 Difference]: Finished difference. Result has 103 places, 89 transitions, 669 flow [2024-06-04 14:32:45,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=669, PETRI_PLACES=103, PETRI_TRANSITIONS=89} [2024-06-04 14:32:45,496 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-04 14:32:45,497 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 89 transitions, 669 flow [2024-06-04 14:32:45,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-04 14:32:45,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:45,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:45,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 14:32:45,497 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:45,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:45,498 INFO L85 PathProgramCache]: Analyzing trace with hash -115114542, now seen corresponding path program 1 times [2024-06-04 14:32:45,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:45,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892369507] [2024-06-04 14:32:45,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:45,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:46,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:46,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892369507] [2024-06-04 14:32:46,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892369507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:46,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:46,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:46,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080308565] [2024-06-04 14:32:46,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:46,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:46,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:46,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:46,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:46,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:46,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 89 transitions, 669 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:46,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:46,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:46,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:46,807 INFO L124 PetriNetUnfolderBase]: 231/432 cut-off events. [2024-06-04 14:32:46,808 INFO L125 PetriNetUnfolderBase]: For 9146/9146 co-relation queries the response was YES. [2024-06-04 14:32:46,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2569 conditions, 432 events. 231/432 cut-off events. For 9146/9146 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1736 event pairs, 36 based on Foata normal form. 1/431 useless extension candidates. Maximal degree in co-relation 2518. Up to 358 conditions per place. [2024-06-04 14:32:46,817 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 85 selfloop transitions, 20 changer transitions 0/108 dead transitions. [2024-06-04 14:32:46,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 108 transitions, 963 flow [2024-06-04 14:32:46,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:46,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-04 14:32:46,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 14:32:46,819 INFO L175 Difference]: Start difference. First operand has 103 places, 89 transitions, 669 flow. Second operand 9 states and 114 transitions. [2024-06-04 14:32:46,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 108 transitions, 963 flow [2024-06-04 14:32:46,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 108 transitions, 915 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-04 14:32:46,827 INFO L231 Difference]: Finished difference. Result has 103 places, 91 transitions, 704 flow [2024-06-04 14:32:46,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=704, PETRI_PLACES=103, PETRI_TRANSITIONS=91} [2024-06-04 14:32:46,831 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-04 14:32:46,831 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 91 transitions, 704 flow [2024-06-04 14:32:46,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:46,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:46,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:46,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 14:32:46,832 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:46,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:46,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1162954027, now seen corresponding path program 1 times [2024-06-04 14:32:46,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:46,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511182320] [2024-06-04 14:32:46,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:46,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:47,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:47,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511182320] [2024-06-04 14:32:47,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511182320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:47,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:47,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:47,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594803297] [2024-06-04 14:32:47,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:47,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:47,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:47,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:47,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:47,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:47,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 704 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:47,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:47,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:47,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:47,993 INFO L124 PetriNetUnfolderBase]: 237/442 cut-off events. [2024-06-04 14:32:47,993 INFO L125 PetriNetUnfolderBase]: For 10309/10309 co-relation queries the response was YES. [2024-06-04 14:32:47,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2682 conditions, 442 events. 237/442 cut-off events. For 10309/10309 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1781 event pairs, 35 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2632. Up to 359 conditions per place. [2024-06-04 14:32:47,996 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 24 changer transitions 0/109 dead transitions. [2024-06-04 14:32:47,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 109 transitions, 1018 flow [2024-06-04 14:32:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:47,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:47,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-04 14:32:47,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 14:32:47,997 INFO L175 Difference]: Start difference. First operand has 103 places, 91 transitions, 704 flow. Second operand 9 states and 114 transitions. [2024-06-04 14:32:47,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 109 transitions, 1018 flow [2024-06-04 14:32:48,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 109 transitions, 951 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 14:32:48,007 INFO L231 Difference]: Finished difference. Result has 105 places, 94 transitions, 743 flow [2024-06-04 14:32:48,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=743, PETRI_PLACES=105, PETRI_TRANSITIONS=94} [2024-06-04 14:32:48,008 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-04 14:32:48,008 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 94 transitions, 743 flow [2024-06-04 14:32:48,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:48,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:48,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:48,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 14:32:48,008 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:48,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:48,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1162953810, now seen corresponding path program 2 times [2024-06-04 14:32:48,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:48,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321543009] [2024-06-04 14:32:48,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:48,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:49,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:49,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:49,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321543009] [2024-06-04 14:32:49,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321543009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:49,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:49,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:49,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924217998] [2024-06-04 14:32:49,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:49,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:49,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:49,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:49,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:49,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:49,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 94 transitions, 743 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:49,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:49,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:49,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:49,629 INFO L124 PetriNetUnfolderBase]: 240/449 cut-off events. [2024-06-04 14:32:49,631 INFO L125 PetriNetUnfolderBase]: For 10898/10898 co-relation queries the response was YES. [2024-06-04 14:32:49,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2795 conditions, 449 events. 240/449 cut-off events. For 10898/10898 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1824 event pairs, 35 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 2744. Up to 367 conditions per place. [2024-06-04 14:32:49,634 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 85 selfloop transitions, 23 changer transitions 0/111 dead transitions. [2024-06-04 14:32:49,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 111 transitions, 1057 flow [2024-06-04 14:32:49,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:49,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:49,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-04 14:32:49,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-04 14:32:49,636 INFO L175 Difference]: Start difference. First operand has 105 places, 94 transitions, 743 flow. Second operand 9 states and 113 transitions. [2024-06-04 14:32:49,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 111 transitions, 1057 flow [2024-06-04 14:32:49,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 111 transitions, 973 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-04 14:32:49,648 INFO L231 Difference]: Finished difference. Result has 107 places, 96 transitions, 754 flow [2024-06-04 14:32:49,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=754, PETRI_PLACES=107, PETRI_TRANSITIONS=96} [2024-06-04 14:32:49,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-04 14:32:49,649 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 96 transitions, 754 flow [2024-06-04 14:32:49,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:49,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:49,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:49,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 14:32:49,649 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:49,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:49,650 INFO L85 PathProgramCache]: Analyzing trace with hash -91168406, now seen corresponding path program 3 times [2024-06-04 14:32:49,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:49,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827986670] [2024-06-04 14:32:49,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:49,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:50,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:50,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827986670] [2024-06-04 14:32:50,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827986670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:50,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:50,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:50,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261646693] [2024-06-04 14:32:50,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:50,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:50,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:50,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:50,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:50,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:50,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 96 transitions, 754 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:50,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:50,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:50,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:51,145 INFO L124 PetriNetUnfolderBase]: 243/456 cut-off events. [2024-06-04 14:32:51,145 INFO L125 PetriNetUnfolderBase]: For 11860/11860 co-relation queries the response was YES. [2024-06-04 14:32:51,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2852 conditions, 456 events. 243/456 cut-off events. For 11860/11860 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1862 event pairs, 37 based on Foata normal form. 1/455 useless extension candidates. Maximal degree in co-relation 2800. Up to 365 conditions per place. [2024-06-04 14:32:51,148 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 83 selfloop transitions, 25 changer transitions 0/111 dead transitions. [2024-06-04 14:32:51,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 1078 flow [2024-06-04 14:32:51,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:51,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-04 14:32:51,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-04 14:32:51,150 INFO L175 Difference]: Start difference. First operand has 107 places, 96 transitions, 754 flow. Second operand 9 states and 113 transitions. [2024-06-04 14:32:51,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 1078 flow [2024-06-04 14:32:51,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 111 transitions, 999 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-04 14:32:51,161 INFO L231 Difference]: Finished difference. Result has 109 places, 98 transitions, 778 flow [2024-06-04 14:32:51,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=778, PETRI_PLACES=109, PETRI_TRANSITIONS=98} [2024-06-04 14:32:51,161 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-04 14:32:51,162 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 98 transitions, 778 flow [2024-06-04 14:32:51,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:51,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:51,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:51,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 14:32:51,162 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:51,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:51,163 INFO L85 PathProgramCache]: Analyzing trace with hash -91168189, now seen corresponding path program 2 times [2024-06-04 14:32:51,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:51,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361853150] [2024-06-04 14:32:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:51,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:52,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:52,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361853150] [2024-06-04 14:32:52,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361853150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:52,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:52,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:52,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381634693] [2024-06-04 14:32:52,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:52,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:52,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:52,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:52,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:52,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:52,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 98 transitions, 778 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:52,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:52,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:52,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:52,372 INFO L124 PetriNetUnfolderBase]: 255/476 cut-off events. [2024-06-04 14:32:52,372 INFO L125 PetriNetUnfolderBase]: For 14080/14080 co-relation queries the response was YES. [2024-06-04 14:32:52,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3017 conditions, 476 events. 255/476 cut-off events. For 14080/14080 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1963 event pairs, 37 based on Foata normal form. 4/478 useless extension candidates. Maximal degree in co-relation 2964. Up to 376 conditions per place. [2024-06-04 14:32:52,375 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 26 changer transitions 0/115 dead transitions. [2024-06-04 14:32:52,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 115 transitions, 1126 flow [2024-06-04 14:32:52,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:52,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-04 14:32:52,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-04 14:32:52,376 INFO L175 Difference]: Start difference. First operand has 109 places, 98 transitions, 778 flow. Second operand 9 states and 115 transitions. [2024-06-04 14:32:52,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 115 transitions, 1126 flow [2024-06-04 14:32:52,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 115 transitions, 1039 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-04 14:32:52,389 INFO L231 Difference]: Finished difference. Result has 111 places, 101 transitions, 803 flow [2024-06-04 14:32:52,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=803, PETRI_PLACES=111, PETRI_TRANSITIONS=101} [2024-06-04 14:32:52,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-04 14:32:52,390 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 101 transitions, 803 flow [2024-06-04 14:32:52,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:52,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:52,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:52,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 14:32:52,391 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:52,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:52,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1307046367, now seen corresponding path program 3 times [2024-06-04 14:32:52,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:52,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524346947] [2024-06-04 14:32:52,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:52,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:53,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:53,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524346947] [2024-06-04 14:32:53,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524346947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:53,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:53,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:53,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610055519] [2024-06-04 14:32:53,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:53,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:53,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:53,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:53,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:53,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 101 transitions, 803 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:53,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:53,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:53,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:53,636 INFO L124 PetriNetUnfolderBase]: 286/526 cut-off events. [2024-06-04 14:32:53,636 INFO L125 PetriNetUnfolderBase]: For 16655/16655 co-relation queries the response was YES. [2024-06-04 14:32:53,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3568 conditions, 526 events. 286/526 cut-off events. For 16655/16655 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2208 event pairs, 36 based on Foata normal form. 2/526 useless extension candidates. Maximal degree in co-relation 3514. Up to 371 conditions per place. [2024-06-04 14:32:53,639 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 83 selfloop transitions, 40 changer transitions 0/126 dead transitions. [2024-06-04 14:32:53,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 126 transitions, 1389 flow [2024-06-04 14:32:53,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-04 14:32:53,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-04 14:32:53,641 INFO L175 Difference]: Start difference. First operand has 111 places, 101 transitions, 803 flow. Second operand 9 states and 120 transitions. [2024-06-04 14:32:53,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 126 transitions, 1389 flow [2024-06-04 14:32:53,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 126 transitions, 1303 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-04 14:32:53,656 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 979 flow [2024-06-04 14:32:53,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=979, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2024-06-04 14:32:53,656 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-04 14:32:53,657 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 979 flow [2024-06-04 14:32:53,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:53,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:53,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:53,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 14:32:53,657 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:53,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:53,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1307046150, now seen corresponding path program 4 times [2024-06-04 14:32:53,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:53,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877319143] [2024-06-04 14:32:53,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:53,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:54,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:54,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877319143] [2024-06-04 14:32:54,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877319143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:54,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:54,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:54,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272421708] [2024-06-04 14:32:54,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:54,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:54,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:54,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:54,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:54,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:54,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 979 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:54,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:54,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:54,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:55,043 INFO L124 PetriNetUnfolderBase]: 289/533 cut-off events. [2024-06-04 14:32:55,043 INFO L125 PetriNetUnfolderBase]: For 17677/17677 co-relation queries the response was YES. [2024-06-04 14:32:55,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3741 conditions, 533 events. 289/533 cut-off events. For 17677/17677 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2259 event pairs, 39 based on Foata normal form. 1/532 useless extension candidates. Maximal degree in co-relation 3685. Up to 418 conditions per place. [2024-06-04 14:32:55,047 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 87 selfloop transitions, 33 changer transitions 0/123 dead transitions. [2024-06-04 14:32:55,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 1299 flow [2024-06-04 14:32:55,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:55,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:55,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-04 14:32:55,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-04 14:32:55,048 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 979 flow. Second operand 9 states and 113 transitions. [2024-06-04 14:32:55,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 1299 flow [2024-06-04 14:32:55,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 123 transitions, 1233 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-04 14:32:55,066 INFO L231 Difference]: Finished difference. Result has 119 places, 112 transitions, 1040 flow [2024-06-04 14:32:55,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1040, PETRI_PLACES=119, PETRI_TRANSITIONS=112} [2024-06-04 14:32:55,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-04 14:32:55,066 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 112 transitions, 1040 flow [2024-06-04 14:32:55,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:55,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:55,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:55,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 14:32:55,067 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:55,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:55,067 INFO L85 PathProgramCache]: Analyzing trace with hash -90958939, now seen corresponding path program 4 times [2024-06-04 14:32:55,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:55,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599144649] [2024-06-04 14:32:55,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:55,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:56,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:56,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:56,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599144649] [2024-06-04 14:32:56,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599144649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:56,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:56,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:56,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820247676] [2024-06-04 14:32:56,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:56,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:56,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:56,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:56,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:56,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:56,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 112 transitions, 1040 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:56,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:56,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:56,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:56,342 INFO L124 PetriNetUnfolderBase]: 287/530 cut-off events. [2024-06-04 14:32:56,342 INFO L125 PetriNetUnfolderBase]: For 17810/17810 co-relation queries the response was YES. [2024-06-04 14:32:56,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3691 conditions, 530 events. 287/530 cut-off events. For 17810/17810 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2242 event pairs, 38 based on Foata normal form. 1/529 useless extension candidates. Maximal degree in co-relation 3634. Up to 403 conditions per place. [2024-06-04 14:32:56,346 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 39 changer transitions 0/129 dead transitions. [2024-06-04 14:32:56,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 129 transitions, 1389 flow [2024-06-04 14:32:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:56,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:56,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-04 14:32:56,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-04 14:32:56,347 INFO L175 Difference]: Start difference. First operand has 119 places, 112 transitions, 1040 flow. Second operand 9 states and 115 transitions. [2024-06-04 14:32:56,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 129 transitions, 1389 flow [2024-06-04 14:32:56,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 129 transitions, 1278 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-04 14:32:56,365 INFO L231 Difference]: Finished difference. Result has 122 places, 118 transitions, 1104 flow [2024-06-04 14:32:56,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1104, PETRI_PLACES=122, PETRI_TRANSITIONS=118} [2024-06-04 14:32:56,366 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 91 predicate places. [2024-06-04 14:32:56,366 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 118 transitions, 1104 flow [2024-06-04 14:32:56,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:56,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:56,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:56,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 14:32:56,367 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:56,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:56,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1307054086, now seen corresponding path program 1 times [2024-06-04 14:32:56,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:56,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577681020] [2024-06-04 14:32:56,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:56,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:57,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:57,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:57,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577681020] [2024-06-04 14:32:57,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577681020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:57,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:57,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:57,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078952984] [2024-06-04 14:32:57,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:57,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:57,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:57,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:57,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:57,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:57,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 118 transitions, 1104 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:57,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:57,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:57,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:57,684 INFO L124 PetriNetUnfolderBase]: 285/527 cut-off events. [2024-06-04 14:32:57,684 INFO L125 PetriNetUnfolderBase]: For 17731/17731 co-relation queries the response was YES. [2024-06-04 14:32:57,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3686 conditions, 527 events. 285/527 cut-off events. For 17731/17731 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2240 event pairs, 35 based on Foata normal form. 1/526 useless extension candidates. Maximal degree in co-relation 3627. Up to 470 conditions per place. [2024-06-04 14:32:57,688 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 112 selfloop transitions, 16 changer transitions 0/131 dead transitions. [2024-06-04 14:32:57,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 131 transitions, 1403 flow [2024-06-04 14:32:57,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:57,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:57,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 14:32:57,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:32:57,704 INFO L175 Difference]: Start difference. First operand has 122 places, 118 transitions, 1104 flow. Second operand 9 states and 108 transitions. [2024-06-04 14:32:57,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 131 transitions, 1403 flow [2024-06-04 14:32:57,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 131 transitions, 1332 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-04 14:32:57,725 INFO L231 Difference]: Finished difference. Result has 126 places, 119 transitions, 1081 flow [2024-06-04 14:32:57,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1081, PETRI_PLACES=126, PETRI_TRANSITIONS=119} [2024-06-04 14:32:57,726 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-04 14:32:57,726 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 119 transitions, 1081 flow [2024-06-04 14:32:57,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:57,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:57,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:57,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 14:32:57,726 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:57,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:57,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1962460705, now seen corresponding path program 5 times [2024-06-04 14:32:57,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:57,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164786026] [2024-06-04 14:32:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:57,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:32:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:32:58,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:32:58,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164786026] [2024-06-04 14:32:58,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164786026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:32:58,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:32:58,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:32:58,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487655313] [2024-06-04 14:32:58,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:32:58,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:32:58,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:32:58,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:32:58,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:32:58,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:32:58,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 119 transitions, 1081 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:58,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:32:58,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:32:58,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:32:58,967 INFO L124 PetriNetUnfolderBase]: 326/594 cut-off events. [2024-06-04 14:32:58,967 INFO L125 PetriNetUnfolderBase]: For 23577/23580 co-relation queries the response was YES. [2024-06-04 14:32:58,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4440 conditions, 594 events. 326/594 cut-off events. For 23577/23580 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2581 event pairs, 45 based on Foata normal form. 2/591 useless extension candidates. Maximal degree in co-relation 4379. Up to 442 conditions per place. [2024-06-04 14:32:58,972 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 102 selfloop transitions, 37 changer transitions 0/142 dead transitions. [2024-06-04 14:32:58,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 142 transitions, 1727 flow [2024-06-04 14:32:58,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:32:58,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:32:58,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-04 14:32:58,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-04 14:32:58,973 INFO L175 Difference]: Start difference. First operand has 126 places, 119 transitions, 1081 flow. Second operand 9 states and 121 transitions. [2024-06-04 14:32:58,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 142 transitions, 1727 flow [2024-06-04 14:32:58,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 142 transitions, 1674 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 14:32:58,998 INFO L231 Difference]: Finished difference. Result has 129 places, 128 transitions, 1287 flow [2024-06-04 14:32:58,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1287, PETRI_PLACES=129, PETRI_TRANSITIONS=128} [2024-06-04 14:32:58,999 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-04 14:32:58,999 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 128 transitions, 1287 flow [2024-06-04 14:32:58,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:32:58,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:32:58,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:32:58,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 14:32:58,999 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:32:59,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:32:59,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1615965538, now seen corresponding path program 5 times [2024-06-04 14:32:59,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:32:59,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995236121] [2024-06-04 14:32:59,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:32:59,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:32:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:00,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:00,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:00,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995236121] [2024-06-04 14:33:00,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995236121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:00,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:00,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:00,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117438454] [2024-06-04 14:33:00,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:00,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:00,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:00,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:00,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:00,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:00,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 128 transitions, 1287 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:00,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:00,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:00,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:00,535 INFO L124 PetriNetUnfolderBase]: 334/611 cut-off events. [2024-06-04 14:33:00,535 INFO L125 PetriNetUnfolderBase]: For 26508/26511 co-relation queries the response was YES. [2024-06-04 14:33:00,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4817 conditions, 611 events. 334/611 cut-off events. For 26508/26511 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2689 event pairs, 46 based on Foata normal form. 1/607 useless extension candidates. Maximal degree in co-relation 4754. Up to 491 conditions per place. [2024-06-04 14:33:00,539 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 106 selfloop transitions, 33 changer transitions 0/142 dead transitions. [2024-06-04 14:33:00,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 142 transitions, 1777 flow [2024-06-04 14:33:00,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:00,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:00,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-04 14:33:00,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-04 14:33:00,543 INFO L175 Difference]: Start difference. First operand has 129 places, 128 transitions, 1287 flow. Second operand 9 states and 115 transitions. [2024-06-04 14:33:00,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 142 transitions, 1777 flow [2024-06-04 14:33:00,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 142 transitions, 1698 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-04 14:33:00,570 INFO L231 Difference]: Finished difference. Result has 135 places, 132 transitions, 1399 flow [2024-06-04 14:33:00,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1399, PETRI_PLACES=135, PETRI_TRANSITIONS=132} [2024-06-04 14:33:00,570 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-04 14:33:00,570 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 132 transitions, 1399 flow [2024-06-04 14:33:00,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:00,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:00,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:00,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 14:33:00,571 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:33:00,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:00,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1962452986, now seen corresponding path program 2 times [2024-06-04 14:33:00,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:00,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075587788] [2024-06-04 14:33:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:00,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:02,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:02,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:02,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075587788] [2024-06-04 14:33:02,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075587788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:02,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:02,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:02,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559072344] [2024-06-04 14:33:02,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:02,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:02,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:02,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:02,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:02,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:02,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 132 transitions, 1399 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:02,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:02,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:02,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:02,446 INFO L124 PetriNetUnfolderBase]: 332/608 cut-off events. [2024-06-04 14:33:02,446 INFO L125 PetriNetUnfolderBase]: For 26990/26993 co-relation queries the response was YES. [2024-06-04 14:33:02,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4801 conditions, 608 events. 332/608 cut-off events. For 26990/26993 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2701 event pairs, 40 based on Foata normal form. 3/607 useless extension candidates. Maximal degree in co-relation 4736. Up to 540 conditions per place. [2024-06-04 14:33:02,450 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 121 selfloop transitions, 19 changer transitions 0/143 dead transitions. [2024-06-04 14:33:02,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 143 transitions, 1716 flow [2024-06-04 14:33:02,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:02,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:02,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 14:33:02,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-04 14:33:02,451 INFO L175 Difference]: Start difference. First operand has 135 places, 132 transitions, 1399 flow. Second operand 9 states and 107 transitions. [2024-06-04 14:33:02,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 143 transitions, 1716 flow [2024-06-04 14:33:02,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 143 transitions, 1626 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-04 14:33:02,481 INFO L231 Difference]: Finished difference. Result has 139 places, 133 transitions, 1363 flow [2024-06-04 14:33:02,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1363, PETRI_PLACES=139, PETRI_TRANSITIONS=133} [2024-06-04 14:33:02,481 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-04 14:33:02,481 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 133 transitions, 1363 flow [2024-06-04 14:33:02,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:02,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:02,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:02,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 14:33:02,482 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:33:02,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:02,482 INFO L85 PathProgramCache]: Analyzing trace with hash 496011534, now seen corresponding path program 3 times [2024-06-04 14:33:02,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:02,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472945087] [2024-06-04 14:33:02,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:02,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:03,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:03,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:03,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472945087] [2024-06-04 14:33:03,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472945087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:03,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:03,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:03,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609219037] [2024-06-04 14:33:03,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:03,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:03,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:03,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:03,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:03,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:03,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 133 transitions, 1363 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:03,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:03,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:03,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:04,126 INFO L124 PetriNetUnfolderBase]: 335/613 cut-off events. [2024-06-04 14:33:04,127 INFO L125 PetriNetUnfolderBase]: For 28033/28036 co-relation queries the response was YES. [2024-06-04 14:33:04,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4854 conditions, 613 events. 335/613 cut-off events. For 28033/28036 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2710 event pairs, 40 based on Foata normal form. 3/612 useless extension candidates. Maximal degree in co-relation 4787. Up to 524 conditions per place. [2024-06-04 14:33:04,131 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 113 selfloop transitions, 29 changer transitions 0/145 dead transitions. [2024-06-04 14:33:04,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 145 transitions, 1711 flow [2024-06-04 14:33:04,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:04,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:04,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-04 14:33:04,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-04 14:33:04,152 INFO L175 Difference]: Start difference. First operand has 139 places, 133 transitions, 1363 flow. Second operand 9 states and 110 transitions. [2024-06-04 14:33:04,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 145 transitions, 1711 flow [2024-06-04 14:33:04,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 145 transitions, 1652 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:04,183 INFO L231 Difference]: Finished difference. Result has 141 places, 135 transitions, 1407 flow [2024-06-04 14:33:04,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1407, PETRI_PLACES=141, PETRI_TRANSITIONS=135} [2024-06-04 14:33:04,183 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-04 14:33:04,184 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 135 transitions, 1407 flow [2024-06-04 14:33:04,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:04,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:04,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:04,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 14:33:04,184 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:33:04,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:04,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1962453265, now seen corresponding path program 6 times [2024-06-04 14:33:04,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:04,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964801505] [2024-06-04 14:33:04,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:04,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:05,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:05,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:05,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964801505] [2024-06-04 14:33:05,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964801505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:05,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:05,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:05,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204418568] [2024-06-04 14:33:05,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:05,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:05,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:05,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:05,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:05,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:05,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 135 transitions, 1407 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:05,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:05,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:05,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:05,390 INFO L124 PetriNetUnfolderBase]: 333/610 cut-off events. [2024-06-04 14:33:05,390 INFO L125 PetriNetUnfolderBase]: For 28669/28672 co-relation queries the response was YES. [2024-06-04 14:33:05,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 610 events. 333/610 cut-off events. For 28669/28672 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2706 event pairs, 43 based on Foata normal form. 1/606 useless extension candidates. Maximal degree in co-relation 4787. Up to 480 conditions per place. [2024-06-04 14:33:05,394 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 37 changer transitions 0/151 dead transitions. [2024-06-04 14:33:05,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 151 transitions, 1914 flow [2024-06-04 14:33:05,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:05,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:05,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-04 14:33:05,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 14:33:05,413 INFO L175 Difference]: Start difference. First operand has 141 places, 135 transitions, 1407 flow. Second operand 9 states and 117 transitions. [2024-06-04 14:33:05,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 151 transitions, 1914 flow [2024-06-04 14:33:05,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 151 transitions, 1827 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:05,444 INFO L231 Difference]: Finished difference. Result has 144 places, 141 transitions, 1527 flow [2024-06-04 14:33:05,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1527, PETRI_PLACES=144, PETRI_TRANSITIONS=141} [2024-06-04 14:33:05,444 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-04 14:33:05,444 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 141 transitions, 1527 flow [2024-06-04 14:33:05,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:05,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:05,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:05,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 14:33:05,445 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:33:05,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:05,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1962662732, now seen corresponding path program 6 times [2024-06-04 14:33:05,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:05,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261747879] [2024-06-04 14:33:05,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:05,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:06,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:06,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261747879] [2024-06-04 14:33:06,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261747879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:06,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:06,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:06,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678222399] [2024-06-04 14:33:06,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:06,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:06,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:06,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:06,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:06,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:06,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 141 transitions, 1527 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:06,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:06,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:06,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:07,001 INFO L124 PetriNetUnfolderBase]: 331/607 cut-off events. [2024-06-04 14:33:07,001 INFO L125 PetriNetUnfolderBase]: For 29407/29410 co-relation queries the response was YES. [2024-06-04 14:33:07,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4868 conditions, 607 events. 331/607 cut-off events. For 29407/29410 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2680 event pairs, 44 based on Foata normal form. 1/603 useless extension candidates. Maximal degree in co-relation 4798. Up to 497 conditions per place. [2024-06-04 14:33:07,013 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 29 changer transitions 0/150 dead transitions. [2024-06-04 14:33:07,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 150 transitions, 1843 flow [2024-06-04 14:33:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:07,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:07,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-04 14:33:07,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 14:33:07,014 INFO L175 Difference]: Start difference. First operand has 144 places, 141 transitions, 1527 flow. Second operand 9 states and 112 transitions. [2024-06-04 14:33:07,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 150 transitions, 1843 flow [2024-06-04 14:33:07,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 150 transitions, 1728 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-04 14:33:07,054 INFO L231 Difference]: Finished difference. Result has 148 places, 141 transitions, 1475 flow [2024-06-04 14:33:07,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1475, PETRI_PLACES=148, PETRI_TRANSITIONS=141} [2024-06-04 14:33:07,056 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-04 14:33:07,056 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 141 transitions, 1475 flow [2024-06-04 14:33:07,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:07,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:07,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:07,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 14:33:07,060 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:33:07,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:07,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1962662515, now seen corresponding path program 7 times [2024-06-04 14:33:07,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:07,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890950887] [2024-06-04 14:33:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:07,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:08,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:08,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890950887] [2024-06-04 14:33:08,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890950887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:08,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:08,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:08,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738970854] [2024-06-04 14:33:08,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:08,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:08,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:08,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:08,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:08,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:08,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 141 transitions, 1475 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:08,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:08,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:08,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:08,413 INFO L124 PetriNetUnfolderBase]: 327/601 cut-off events. [2024-06-04 14:33:08,413 INFO L125 PetriNetUnfolderBase]: For 29326/29329 co-relation queries the response was YES. [2024-06-04 14:33:08,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4731 conditions, 601 events. 327/601 cut-off events. For 29326/29329 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2652 event pairs, 42 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 4659. Up to 488 conditions per place. [2024-06-04 14:33:08,418 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 30 changer transitions 0/151 dead transitions. [2024-06-04 14:33:08,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 151 transitions, 1806 flow [2024-06-04 14:33:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:08,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:08,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-04 14:33:08,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-04 14:33:08,420 INFO L175 Difference]: Start difference. First operand has 148 places, 141 transitions, 1475 flow. Second operand 9 states and 113 transitions. [2024-06-04 14:33:08,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 151 transitions, 1806 flow [2024-06-04 14:33:08,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 151 transitions, 1677 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:08,458 INFO L231 Difference]: Finished difference. Result has 149 places, 142 transitions, 1427 flow [2024-06-04 14:33:08,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1427, PETRI_PLACES=149, PETRI_TRANSITIONS=142} [2024-06-04 14:33:08,458 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-04 14:33:08,458 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 142 transitions, 1427 flow [2024-06-04 14:33:08,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:08,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:08,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:08,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 14:33:08,459 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:33:08,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:08,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1705952755, now seen corresponding path program 8 times [2024-06-04 14:33:08,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:08,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972730894] [2024-06-04 14:33:08,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:08,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:09,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:09,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972730894] [2024-06-04 14:33:09,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972730894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:09,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:09,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:09,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412068702] [2024-06-04 14:33:09,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:09,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:09,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:09,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:09,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:09,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:09,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 142 transitions, 1427 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:09,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:09,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:09,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:09,665 INFO L124 PetriNetUnfolderBase]: 343/627 cut-off events. [2024-06-04 14:33:09,666 INFO L125 PetriNetUnfolderBase]: For 32746/32749 co-relation queries the response was YES. [2024-06-04 14:33:09,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4996 conditions, 627 events. 343/627 cut-off events. For 32746/32749 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2816 event pairs, 43 based on Foata normal form. 2/624 useless extension candidates. Maximal degree in co-relation 4923. Up to 351 conditions per place. [2024-06-04 14:33:09,671 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 75 changer transitions 0/164 dead transitions. [2024-06-04 14:33:09,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 164 transitions, 2207 flow [2024-06-04 14:33:09,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:09,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:09,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-04 14:33:09,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-04 14:33:09,673 INFO L175 Difference]: Start difference. First operand has 149 places, 142 transitions, 1427 flow. Second operand 9 states and 124 transitions. [2024-06-04 14:33:09,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 164 transitions, 2207 flow [2024-06-04 14:33:09,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 164 transitions, 2147 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:09,711 INFO L231 Difference]: Finished difference. Result has 151 places, 148 transitions, 1629 flow [2024-06-04 14:33:09,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1629, PETRI_PLACES=151, PETRI_TRANSITIONS=148} [2024-06-04 14:33:09,711 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-04 14:33:09,712 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 148 transitions, 1629 flow [2024-06-04 14:33:09,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:09,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:09,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:09,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 14:33:09,713 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:33:09,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:09,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1705960412, now seen corresponding path program 7 times [2024-06-04 14:33:09,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:09,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691025153] [2024-06-04 14:33:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:09,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:10,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:10,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691025153] [2024-06-04 14:33:10,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691025153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:10,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:10,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:10,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448021230] [2024-06-04 14:33:10,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:10,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:10,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:10,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:10,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:10,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:10,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 148 transitions, 1629 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:10,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:10,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:10,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:11,143 INFO L124 PetriNetUnfolderBase]: 341/624 cut-off events. [2024-06-04 14:33:11,144 INFO L125 PetriNetUnfolderBase]: For 32941/32944 co-relation queries the response was YES. [2024-06-04 14:33:11,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5089 conditions, 624 events. 341/624 cut-off events. For 32941/32944 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2794 event pairs, 44 based on Foata normal form. 1/620 useless extension candidates. Maximal degree in co-relation 5015. Up to 462 conditions per place. [2024-06-04 14:33:11,148 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 106 selfloop transitions, 50 changer transitions 0/159 dead transitions. [2024-06-04 14:33:11,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 159 transitions, 2025 flow [2024-06-04 14:33:11,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:11,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:11,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-04 14:33:11,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-04 14:33:11,150 INFO L175 Difference]: Start difference. First operand has 151 places, 148 transitions, 1629 flow. Second operand 9 states and 113 transitions. [2024-06-04 14:33:11,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 159 transitions, 2025 flow [2024-06-04 14:33:11,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 159 transitions, 1832 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-04 14:33:11,186 INFO L231 Difference]: Finished difference. Result has 154 places, 150 transitions, 1607 flow [2024-06-04 14:33:11,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1607, PETRI_PLACES=154, PETRI_TRANSITIONS=150} [2024-06-04 14:33:11,187 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-04 14:33:11,187 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 150 transitions, 1607 flow [2024-06-04 14:33:11,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:11,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:11,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:11,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 14:33:11,188 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:33:11,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:11,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1705960195, now seen corresponding path program 9 times [2024-06-04 14:33:11,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:11,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141689390] [2024-06-04 14:33:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:11,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:12,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:12,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141689390] [2024-06-04 14:33:12,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141689390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:12,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:12,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:12,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029538714] [2024-06-04 14:33:12,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:12,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:12,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:12,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:12,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:12,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:12,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 150 transitions, 1607 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:12,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:12,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:12,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:12,359 INFO L124 PetriNetUnfolderBase]: 337/618 cut-off events. [2024-06-04 14:33:12,359 INFO L125 PetriNetUnfolderBase]: For 32555/32558 co-relation queries the response was YES. [2024-06-04 14:33:12,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4814 conditions, 618 events. 337/618 cut-off events. For 32555/32558 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2767 event pairs, 42 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 4740. Up to 345 conditions per place. [2024-06-04 14:33:12,363 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 85 selfloop transitions, 78 changer transitions 0/166 dead transitions. [2024-06-04 14:33:12,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 166 transitions, 2295 flow [2024-06-04 14:33:12,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:12,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:12,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-04 14:33:12,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-04 14:33:12,364 INFO L175 Difference]: Start difference. First operand has 154 places, 150 transitions, 1607 flow. Second operand 9 states and 123 transitions. [2024-06-04 14:33:12,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 166 transitions, 2295 flow [2024-06-04 14:33:12,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 166 transitions, 2124 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:12,402 INFO L231 Difference]: Finished difference. Result has 157 places, 152 transitions, 1647 flow [2024-06-04 14:33:12,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1647, PETRI_PLACES=157, PETRI_TRANSITIONS=152} [2024-06-04 14:33:12,411 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-04 14:33:12,411 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 152 transitions, 1647 flow [2024-06-04 14:33:12,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:12,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:12,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:12,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 14:33:12,412 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)] === [2024-06-04 14:33:12,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:12,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1696755985, now seen corresponding path program 10 times [2024-06-04 14:33:12,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:12,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871554790] [2024-06-04 14:33:12,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:12,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:13,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:13,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871554790] [2024-06-04 14:33:13,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871554790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:13,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:13,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:13,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725227440] [2024-06-04 14:33:13,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:13,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:13,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:13,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:13,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:13,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:13,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 152 transitions, 1647 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:13,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:13,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:13,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:13,709 INFO L124 PetriNetUnfolderBase]: 334/613 cut-off events. [2024-06-04 14:33:13,709 INFO L125 PetriNetUnfolderBase]: For 31851/31851 co-relation queries the response was YES. [2024-06-04 14:33:13,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4753 conditions, 613 events. 334/613 cut-off events. For 31851/31851 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2733 event pairs, 38 based on Foata normal form. 2/613 useless extension candidates. Maximal degree in co-relation 4677. Up to 547 conditions per place. [2024-06-04 14:33:13,714 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 144 selfloop transitions, 16 changer transitions 0/163 dead transitions. [2024-06-04 14:33:13,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 163 transitions, 2097 flow [2024-06-04 14:33:13,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:13,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:13,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-04 14:33:13,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-04 14:33:13,715 INFO L175 Difference]: Start difference. First operand has 157 places, 152 transitions, 1647 flow. Second operand 9 states and 109 transitions. [2024-06-04 14:33:13,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 163 transitions, 2097 flow [2024-06-04 14:33:13,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 163 transitions, 1936 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-04 14:33:13,758 INFO L231 Difference]: Finished difference. Result has 160 places, 152 transitions, 1524 flow [2024-06-04 14:33:13,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1486, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1524, PETRI_PLACES=160, PETRI_TRANSITIONS=152} [2024-06-04 14:33:13,759 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-04 14:33:13,759 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 152 transitions, 1524 flow [2024-06-04 14:33:13,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:13,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:13,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:13,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 14:33:13,759 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)] === [2024-06-04 14:33:13,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:13,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1696755706, now seen corresponding path program 4 times [2024-06-04 14:33:13,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:13,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521631006] [2024-06-04 14:33:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:13,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:14,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:14,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:14,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521631006] [2024-06-04 14:33:14,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521631006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:14,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:14,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:14,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001397460] [2024-06-04 14:33:14,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:14,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:14,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:14,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:14,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:14,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:14,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 152 transitions, 1524 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:14,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:14,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:14,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:15,242 INFO L124 PetriNetUnfolderBase]: 337/618 cut-off events. [2024-06-04 14:33:15,242 INFO L125 PetriNetUnfolderBase]: For 31769/31769 co-relation queries the response was YES. [2024-06-04 14:33:15,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4656 conditions, 618 events. 337/618 cut-off events. For 31769/31769 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2760 event pairs, 38 based on Foata normal form. 1/617 useless extension candidates. Maximal degree in co-relation 4579. Up to 567 conditions per place. [2024-06-04 14:33:15,247 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 146 selfloop transitions, 14 changer transitions 0/163 dead transitions. [2024-06-04 14:33:15,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 163 transitions, 1910 flow [2024-06-04 14:33:15,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:15,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:15,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-04 14:33:15,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 14:33:15,248 INFO L175 Difference]: Start difference. First operand has 160 places, 152 transitions, 1524 flow. Second operand 9 states and 105 transitions. [2024-06-04 14:33:15,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 163 transitions, 1910 flow [2024-06-04 14:33:15,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 163 transitions, 1850 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 14:33:15,291 INFO L231 Difference]: Finished difference. Result has 160 places, 154 transitions, 1545 flow [2024-06-04 14:33:15,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1545, PETRI_PLACES=160, PETRI_TRANSITIONS=154} [2024-06-04 14:33:15,291 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-04 14:33:15,292 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 154 transitions, 1545 flow [2024-06-04 14:33:15,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:15,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:15,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:15,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 14:33:15,292 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)] === [2024-06-04 14:33:15,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:15,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1696429276, now seen corresponding path program 5 times [2024-06-04 14:33:15,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:15,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229628622] [2024-06-04 14:33:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:15,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:16,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:16,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229628622] [2024-06-04 14:33:16,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229628622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:16,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:16,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:16,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666807125] [2024-06-04 14:33:16,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:16,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:16,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:16,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:16,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:16,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:16,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 154 transitions, 1545 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:16,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:16,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:16,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:16,704 INFO L124 PetriNetUnfolderBase]: 334/613 cut-off events. [2024-06-04 14:33:16,704 INFO L125 PetriNetUnfolderBase]: For 31855/31855 co-relation queries the response was YES. [2024-06-04 14:33:16,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4579 conditions, 613 events. 334/613 cut-off events. For 31855/31855 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2737 event pairs, 38 based on Foata normal form. 1/612 useless extension candidates. Maximal degree in co-relation 4501. Up to 556 conditions per place. [2024-06-04 14:33:16,708 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 143 selfloop transitions, 18 changer transitions 0/164 dead transitions. [2024-06-04 14:33:16,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 164 transitions, 1891 flow [2024-06-04 14:33:16,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:16,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:16,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:33:16,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 14:33:16,710 INFO L175 Difference]: Start difference. First operand has 160 places, 154 transitions, 1545 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:33:16,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 164 transitions, 1891 flow [2024-06-04 14:33:16,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 164 transitions, 1812 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:16,756 INFO L231 Difference]: Finished difference. Result has 163 places, 154 transitions, 1507 flow [2024-06-04 14:33:16,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1507, PETRI_PLACES=163, PETRI_TRANSITIONS=154} [2024-06-04 14:33:16,757 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-04 14:33:16,757 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 154 transitions, 1507 flow [2024-06-04 14:33:16,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:16,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:16,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:16,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 14:33:16,757 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)] === [2024-06-04 14:33:16,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:16,758 INFO L85 PathProgramCache]: Analyzing trace with hash -574682184, now seen corresponding path program 1 times [2024-06-04 14:33:16,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:16,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721872853] [2024-06-04 14:33:16,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:16,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:17,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:17,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721872853] [2024-06-04 14:33:17,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721872853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:17,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:17,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:17,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884748781] [2024-06-04 14:33:17,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:17,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:17,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:17,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:17,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:17,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:17,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 154 transitions, 1507 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:17,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:17,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:17,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:17,922 INFO L124 PetriNetUnfolderBase]: 338/621 cut-off events. [2024-06-04 14:33:17,922 INFO L125 PetriNetUnfolderBase]: For 34026/34026 co-relation queries the response was YES. [2024-06-04 14:33:17,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4610 conditions, 621 events. 338/621 cut-off events. For 34026/34026 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2787 event pairs, 15 based on Foata normal form. 2/621 useless extension candidates. Maximal degree in co-relation 4531. Up to 517 conditions per place. [2024-06-04 14:33:17,927 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 153 selfloop transitions, 18 changer transitions 0/174 dead transitions. [2024-06-04 14:33:17,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 174 transitions, 1919 flow [2024-06-04 14:33:17,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:17,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:17,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-04 14:33:17,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-04 14:33:17,928 INFO L175 Difference]: Start difference. First operand has 163 places, 154 transitions, 1507 flow. Second operand 9 states and 113 transitions. [2024-06-04 14:33:17,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 174 transitions, 1919 flow [2024-06-04 14:33:17,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 174 transitions, 1873 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 14:33:17,973 INFO L231 Difference]: Finished difference. Result has 163 places, 155 transitions, 1519 flow [2024-06-04 14:33:17,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1461, PETRI_DIFFERENCE_MINUEND_PLACES=154, 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=9, PETRI_FLOW=1519, PETRI_PLACES=163, PETRI_TRANSITIONS=155} [2024-06-04 14:33:17,974 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-04 14:33:17,974 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 155 transitions, 1519 flow [2024-06-04 14:33:17,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:17,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:17,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:17,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 14:33:17,975 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)] === [2024-06-04 14:33:17,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:17,975 INFO L85 PathProgramCache]: Analyzing trace with hash 726413096, now seen corresponding path program 2 times [2024-06-04 14:33:17,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:17,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534592930] [2024-06-04 14:33:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:17,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:18,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:18,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534592930] [2024-06-04 14:33:18,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534592930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:18,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:18,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:18,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627354880] [2024-06-04 14:33:18,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:18,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:18,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:18,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:18,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:18,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:18,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 155 transitions, 1519 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:18,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:18,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:18,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:19,170 INFO L124 PetriNetUnfolderBase]: 342/629 cut-off events. [2024-06-04 14:33:19,170 INFO L125 PetriNetUnfolderBase]: For 35500/35500 co-relation queries the response was YES. [2024-06-04 14:33:19,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4703 conditions, 629 events. 342/629 cut-off events. For 35500/35500 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2859 event pairs, 32 based on Foata normal form. 2/629 useless extension candidates. Maximal degree in co-relation 4623. Up to 542 conditions per place. [2024-06-04 14:33:19,175 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 152 selfloop transitions, 19 changer transitions 0/174 dead transitions. [2024-06-04 14:33:19,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 174 transitions, 1931 flow [2024-06-04 14:33:19,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:19,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:19,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-04 14:33:19,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 14:33:19,176 INFO L175 Difference]: Start difference. First operand has 163 places, 155 transitions, 1519 flow. Second operand 9 states and 114 transitions. [2024-06-04 14:33:19,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 174 transitions, 1931 flow [2024-06-04 14:33:19,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 174 transitions, 1883 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:19,224 INFO L231 Difference]: Finished difference. Result has 165 places, 156 transitions, 1533 flow [2024-06-04 14:33:19,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1471, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1533, PETRI_PLACES=165, PETRI_TRANSITIONS=156} [2024-06-04 14:33:19,224 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-04 14:33:19,224 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 156 transitions, 1533 flow [2024-06-04 14:33:19,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:19,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:19,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:19,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 14:33:19,225 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)] === [2024-06-04 14:33:19,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:19,225 INFO L85 PathProgramCache]: Analyzing trace with hash -853549450, now seen corresponding path program 1 times [2024-06-04 14:33:19,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:19,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486204156] [2024-06-04 14:33:19,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:19,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:20,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:20,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:20,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486204156] [2024-06-04 14:33:20,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486204156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:20,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:20,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:20,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876426925] [2024-06-04 14:33:20,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:20,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:20,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:20,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:20,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:20,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:20,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 156 transitions, 1533 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:20,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:20,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:20,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:20,652 INFO L124 PetriNetUnfolderBase]: 345/634 cut-off events. [2024-06-04 14:33:20,652 INFO L125 PetriNetUnfolderBase]: For 36509/36509 co-relation queries the response was YES. [2024-06-04 14:33:20,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4776 conditions, 634 events. 345/634 cut-off events. For 36509/36509 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2883 event pairs, 31 based on Foata normal form. 1/633 useless extension candidates. Maximal degree in co-relation 4695. Up to 547 conditions per place. [2024-06-04 14:33:20,657 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 22 changer transitions 0/176 dead transitions. [2024-06-04 14:33:20,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 176 transitions, 1985 flow [2024-06-04 14:33:20,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:20,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 14:33:20,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 14:33:20,658 INFO L175 Difference]: Start difference. First operand has 165 places, 156 transitions, 1533 flow. Second operand 10 states and 124 transitions. [2024-06-04 14:33:20,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 176 transitions, 1985 flow [2024-06-04 14:33:20,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 176 transitions, 1933 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:20,709 INFO L231 Difference]: Finished difference. Result has 168 places, 158 transitions, 1588 flow [2024-06-04 14:33:20,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1588, PETRI_PLACES=168, PETRI_TRANSITIONS=158} [2024-06-04 14:33:20,709 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-04 14:33:20,709 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 158 transitions, 1588 flow [2024-06-04 14:33:20,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:20,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:20,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:20,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 14:33:20,710 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)] === [2024-06-04 14:33:20,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:20,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1691653364, now seen corresponding path program 3 times [2024-06-04 14:33:20,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:20,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367228827] [2024-06-04 14:33:20,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:20,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:21,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:21,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367228827] [2024-06-04 14:33:21,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367228827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:21,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:21,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:21,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744258843] [2024-06-04 14:33:21,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:21,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:21,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:21,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:21,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:21,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:21,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 158 transitions, 1588 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:21,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:21,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:21,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:21,859 INFO L124 PetriNetUnfolderBase]: 349/642 cut-off events. [2024-06-04 14:33:21,859 INFO L125 PetriNetUnfolderBase]: For 39276/39276 co-relation queries the response was YES. [2024-06-04 14:33:21,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4860 conditions, 642 events. 349/642 cut-off events. For 39276/39276 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2940 event pairs, 31 based on Foata normal form. 2/642 useless extension candidates. Maximal degree in co-relation 4778. Up to 557 conditions per place. [2024-06-04 14:33:21,864 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 152 selfloop transitions, 22 changer transitions 0/177 dead transitions. [2024-06-04 14:33:21,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 177 transitions, 2030 flow [2024-06-04 14:33:21,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:21,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:21,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-04 14:33:21,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 14:33:21,865 INFO L175 Difference]: Start difference. First operand has 168 places, 158 transitions, 1588 flow. Second operand 9 states and 111 transitions. [2024-06-04 14:33:21,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 177 transitions, 2030 flow [2024-06-04 14:33:21,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 177 transitions, 1939 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:21,922 INFO L231 Difference]: Finished difference. Result has 170 places, 162 transitions, 1608 flow [2024-06-04 14:33:21,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1608, PETRI_PLACES=170, PETRI_TRANSITIONS=162} [2024-06-04 14:33:21,922 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-04 14:33:21,922 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 162 transitions, 1608 flow [2024-06-04 14:33:21,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:21,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:21,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:21,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 14:33:21,923 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)] === [2024-06-04 14:33:21,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:21,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1691831304, now seen corresponding path program 2 times [2024-06-04 14:33:21,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:21,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949160018] [2024-06-04 14:33:21,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:21,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:22,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:22,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949160018] [2024-06-04 14:33:22,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949160018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:22,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:22,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:22,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958911595] [2024-06-04 14:33:22,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:22,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:22,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:22,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:22,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:23,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:23,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 162 transitions, 1608 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:23,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:23,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:23,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:23,414 INFO L124 PetriNetUnfolderBase]: 367/675 cut-off events. [2024-06-04 14:33:23,414 INFO L125 PetriNetUnfolderBase]: For 43973/43973 co-relation queries the response was YES. [2024-06-04 14:33:23,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5352 conditions, 675 events. 367/675 cut-off events. For 43973/43973 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3112 event pairs, 29 based on Foata normal form. 1/674 useless extension candidates. Maximal degree in co-relation 5268. Up to 548 conditions per place. [2024-06-04 14:33:23,419 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 147 selfloop transitions, 36 changer transitions 0/186 dead transitions. [2024-06-04 14:33:23,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 186 transitions, 2404 flow [2024-06-04 14:33:23,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:23,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:23,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-04 14:33:23,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-04 14:33:23,436 INFO L175 Difference]: Start difference. First operand has 170 places, 162 transitions, 1608 flow. Second operand 10 states and 129 transitions. [2024-06-04 14:33:23,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 186 transitions, 2404 flow [2024-06-04 14:33:23,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 186 transitions, 2345 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 14:33:23,503 INFO L231 Difference]: Finished difference. Result has 174 places, 169 transitions, 1808 flow [2024-06-04 14:33:23,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1808, PETRI_PLACES=174, PETRI_TRANSITIONS=169} [2024-06-04 14:33:23,503 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-04 14:33:23,504 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 169 transitions, 1808 flow [2024-06-04 14:33:23,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:23,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:23,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:23,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 14:33:23,504 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)] === [2024-06-04 14:33:23,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:23,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1691837814, now seen corresponding path program 3 times [2024-06-04 14:33:23,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:23,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42728663] [2024-06-04 14:33:23,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:23,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:24,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:24,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42728663] [2024-06-04 14:33:24,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42728663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:24,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:24,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:24,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832233865] [2024-06-04 14:33:24,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:24,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:24,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:24,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:24,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:24,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:24,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 169 transitions, 1808 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:24,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:24,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:24,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:25,063 INFO L124 PetriNetUnfolderBase]: 365/672 cut-off events. [2024-06-04 14:33:25,063 INFO L125 PetriNetUnfolderBase]: For 44694/44694 co-relation queries the response was YES. [2024-06-04 14:33:25,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5340 conditions, 672 events. 365/672 cut-off events. For 44694/44694 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3106 event pairs, 32 based on Foata normal form. 1/671 useless extension candidates. Maximal degree in co-relation 5255. Up to 566 conditions per place. [2024-06-04 14:33:25,069 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 31 changer transitions 0/185 dead transitions. [2024-06-04 14:33:25,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 185 transitions, 2256 flow [2024-06-04 14:33:25,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:25,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 14:33:25,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 14:33:25,085 INFO L175 Difference]: Start difference. First operand has 174 places, 169 transitions, 1808 flow. Second operand 10 states and 124 transitions. [2024-06-04 14:33:25,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 185 transitions, 2256 flow [2024-06-04 14:33:25,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 185 transitions, 2151 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-04 14:33:25,152 INFO L231 Difference]: Finished difference. Result has 179 places, 170 transitions, 1814 flow [2024-06-04 14:33:25,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1814, PETRI_PLACES=179, PETRI_TRANSITIONS=170} [2024-06-04 14:33:25,152 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-04 14:33:25,152 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 170 transitions, 1814 flow [2024-06-04 14:33:25,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:25,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:25,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:25,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 14:33:25,153 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)] === [2024-06-04 14:33:25,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:25,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1691838062, now seen corresponding path program 1 times [2024-06-04 14:33:25,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:25,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345512035] [2024-06-04 14:33:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:25,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:26,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:26,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345512035] [2024-06-04 14:33:26,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345512035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:26,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:26,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:26,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409485848] [2024-06-04 14:33:26,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:26,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:26,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:26,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:26,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:26,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:26,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 170 transitions, 1814 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:26,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:26,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:26,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:26,978 INFO L124 PetriNetUnfolderBase]: 364/671 cut-off events. [2024-06-04 14:33:26,978 INFO L125 PetriNetUnfolderBase]: For 45545/45545 co-relation queries the response was YES. [2024-06-04 14:33:26,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5249 conditions, 671 events. 364/671 cut-off events. For 45545/45545 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3096 event pairs, 30 based on Foata normal form. 3/672 useless extension candidates. Maximal degree in co-relation 5162. Up to 541 conditions per place. [2024-06-04 14:33:26,983 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 149 selfloop transitions, 36 changer transitions 0/188 dead transitions. [2024-06-04 14:33:26,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 188 transitions, 2284 flow [2024-06-04 14:33:26,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:26,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:26,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-04 14:33:26,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-04 14:33:26,989 INFO L175 Difference]: Start difference. First operand has 179 places, 170 transitions, 1814 flow. Second operand 10 states and 126 transitions. [2024-06-04 14:33:26,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 188 transitions, 2284 flow [2024-06-04 14:33:27,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 188 transitions, 2157 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:27,055 INFO L231 Difference]: Finished difference. Result has 181 places, 172 transitions, 1826 flow [2024-06-04 14:33:27,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1826, PETRI_PLACES=181, PETRI_TRANSITIONS=172} [2024-06-04 14:33:27,056 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-04 14:33:27,056 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 172 transitions, 1826 flow [2024-06-04 14:33:27,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:27,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:27,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:27,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 14:33:27,056 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)] === [2024-06-04 14:33:27,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:27,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1857292498, now seen corresponding path program 4 times [2024-06-04 14:33:27,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:27,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299514302] [2024-06-04 14:33:27,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:27,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:27,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:27,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299514302] [2024-06-04 14:33:27,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299514302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:27,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:27,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:27,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627478653] [2024-06-04 14:33:27,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:27,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:27,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:27,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:27,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:27,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:27,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 172 transitions, 1826 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:27,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:27,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:27,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:28,180 INFO L124 PetriNetUnfolderBase]: 368/679 cut-off events. [2024-06-04 14:33:28,181 INFO L125 PetriNetUnfolderBase]: For 45345/45345 co-relation queries the response was YES. [2024-06-04 14:33:28,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5307 conditions, 679 events. 368/679 cut-off events. For 45345/45345 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3156 event pairs, 32 based on Foata normal form. 2/679 useless extension candidates. Maximal degree in co-relation 5219. Up to 581 conditions per place. [2024-06-04 14:33:28,186 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 158 selfloop transitions, 25 changer transitions 0/186 dead transitions. [2024-06-04 14:33:28,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 186 transitions, 2256 flow [2024-06-04 14:33:28,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:28,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:28,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-04 14:33:28,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 14:33:28,188 INFO L175 Difference]: Start difference. First operand has 181 places, 172 transitions, 1826 flow. Second operand 9 states and 111 transitions. [2024-06-04 14:33:28,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 186 transitions, 2256 flow [2024-06-04 14:33:28,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 186 transitions, 2127 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:28,260 INFO L231 Difference]: Finished difference. Result has 182 places, 174 transitions, 1787 flow [2024-06-04 14:33:28,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1787, PETRI_PLACES=182, PETRI_TRANSITIONS=174} [2024-06-04 14:33:28,261 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-04 14:33:28,261 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 174 transitions, 1787 flow [2024-06-04 14:33:28,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:28,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:28,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:28,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 14:33:28,262 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)] === [2024-06-04 14:33:28,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:28,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1857470438, now seen corresponding path program 4 times [2024-06-04 14:33:28,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:28,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383372875] [2024-06-04 14:33:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:28,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:29,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:29,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383372875] [2024-06-04 14:33:29,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383372875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:29,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:29,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:29,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681118296] [2024-06-04 14:33:29,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:29,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:29,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:29,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:29,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:29,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:29,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 174 transitions, 1787 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:29,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:29,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:29,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:29,714 INFO L124 PetriNetUnfolderBase]: 386/716 cut-off events. [2024-06-04 14:33:29,714 INFO L125 PetriNetUnfolderBase]: For 51852/51852 co-relation queries the response was YES. [2024-06-04 14:33:29,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5800 conditions, 716 events. 386/716 cut-off events. For 51852/51852 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3401 event pairs, 31 based on Foata normal form. 1/715 useless extension candidates. Maximal degree in co-relation 5711. Up to 577 conditions per place. [2024-06-04 14:33:29,720 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 154 selfloop transitions, 39 changer transitions 0/196 dead transitions. [2024-06-04 14:33:29,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 196 transitions, 2640 flow [2024-06-04 14:33:29,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:29,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:29,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-04 14:33:29,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-04 14:33:29,722 INFO L175 Difference]: Start difference. First operand has 182 places, 174 transitions, 1787 flow. Second operand 10 states and 129 transitions. [2024-06-04 14:33:29,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 196 transitions, 2640 flow [2024-06-04 14:33:29,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 196 transitions, 2549 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:29,801 INFO L231 Difference]: Finished difference. Result has 184 places, 181 transitions, 1985 flow [2024-06-04 14:33:29,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1696, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1985, PETRI_PLACES=184, PETRI_TRANSITIONS=181} [2024-06-04 14:33:29,802 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-04 14:33:29,803 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 181 transitions, 1985 flow [2024-06-04 14:33:29,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:29,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:29,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:29,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 14:33:29,803 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)] === [2024-06-04 14:33:29,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:29,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1863733058, now seen corresponding path program 5 times [2024-06-04 14:33:29,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:29,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339193096] [2024-06-04 14:33:29,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:29,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:30,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:30,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:30,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339193096] [2024-06-04 14:33:30,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339193096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:30,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:30,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:30,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940684125] [2024-06-04 14:33:30,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:30,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:30,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:30,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:30,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:31,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:31,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 181 transitions, 1985 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:31,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:31,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:31,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:31,416 INFO L124 PetriNetUnfolderBase]: 412/766 cut-off events. [2024-06-04 14:33:31,416 INFO L125 PetriNetUnfolderBase]: For 63920/63920 co-relation queries the response was YES. [2024-06-04 14:33:31,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6655 conditions, 766 events. 412/766 cut-off events. For 63920/63920 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3736 event pairs, 33 based on Foata normal form. 2/766 useless extension candidates. Maximal degree in co-relation 6566. Up to 519 conditions per place. [2024-06-04 14:33:31,422 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 142 selfloop transitions, 61 changer transitions 0/206 dead transitions. [2024-06-04 14:33:31,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 206 transitions, 3030 flow [2024-06-04 14:33:31,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:31,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-04 14:33:31,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-04 14:33:31,423 INFO L175 Difference]: Start difference. First operand has 184 places, 181 transitions, 1985 flow. Second operand 10 states and 134 transitions. [2024-06-04 14:33:31,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 206 transitions, 3030 flow [2024-06-04 14:33:31,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 206 transitions, 2911 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-04 14:33:31,515 INFO L231 Difference]: Finished difference. Result has 189 places, 188 transitions, 2209 flow [2024-06-04 14:33:31,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2209, PETRI_PLACES=189, PETRI_TRANSITIONS=188} [2024-06-04 14:33:31,516 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-04 14:33:31,516 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 188 transitions, 2209 flow [2024-06-04 14:33:31,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:31,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:31,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:31,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 14:33:31,517 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)] === [2024-06-04 14:33:31,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:31,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1857476948, now seen corresponding path program 6 times [2024-06-04 14:33:31,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:31,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602245] [2024-06-04 14:33:31,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:31,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:32,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:32,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:32,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602245] [2024-06-04 14:33:32,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:32,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:32,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:32,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280795582] [2024-06-04 14:33:32,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:32,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:32,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:32,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:32,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:32,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:32,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 188 transitions, 2209 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:32,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:32,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:32,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:33,061 INFO L124 PetriNetUnfolderBase]: 408/760 cut-off events. [2024-06-04 14:33:33,061 INFO L125 PetriNetUnfolderBase]: For 62848/62848 co-relation queries the response was YES. [2024-06-04 14:33:33,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6585 conditions, 760 events. 408/760 cut-off events. For 62848/62848 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3705 event pairs, 33 based on Foata normal form. 2/760 useless extension candidates. Maximal degree in co-relation 6494. Up to 616 conditions per place. [2024-06-04 14:33:33,067 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 38 changer transitions 0/202 dead transitions. [2024-06-04 14:33:33,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 202 transitions, 2764 flow [2024-06-04 14:33:33,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:33,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 14:33:33,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-04 14:33:33,069 INFO L175 Difference]: Start difference. First operand has 189 places, 188 transitions, 2209 flow. Second operand 10 states and 127 transitions. [2024-06-04 14:33:33,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 202 transitions, 2764 flow [2024-06-04 14:33:33,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 202 transitions, 2563 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-06-04 14:33:33,167 INFO L231 Difference]: Finished difference. Result has 194 places, 188 transitions, 2091 flow [2024-06-04 14:33:33,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2091, PETRI_PLACES=194, PETRI_TRANSITIONS=188} [2024-06-04 14:33:33,168 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-04 14:33:33,168 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 188 transitions, 2091 flow [2024-06-04 14:33:33,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:33,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:33,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:33,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 14:33:33,168 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)] === [2024-06-04 14:33:33,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:33,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1863726548, now seen corresponding path program 7 times [2024-06-04 14:33:33,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:33,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356520587] [2024-06-04 14:33:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:33,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:34,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:34,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356520587] [2024-06-04 14:33:34,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356520587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:34,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:34,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:34,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124202251] [2024-06-04 14:33:34,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:34,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:34,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:34,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:34,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:34,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:34,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 188 transitions, 2091 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:34,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:34,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:34,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:34,669 INFO L124 PetriNetUnfolderBase]: 411/766 cut-off events. [2024-06-04 14:33:34,670 INFO L125 PetriNetUnfolderBase]: For 61072/61072 co-relation queries the response was YES. [2024-06-04 14:33:34,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6509 conditions, 766 events. 411/766 cut-off events. For 61072/61072 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3747 event pairs, 32 based on Foata normal form. 1/765 useless extension candidates. Maximal degree in co-relation 6416. Up to 521 conditions per place. [2024-06-04 14:33:34,676 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 138 selfloop transitions, 68 changer transitions 0/209 dead transitions. [2024-06-04 14:33:34,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 209 transitions, 3052 flow [2024-06-04 14:33:34,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:34,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-04 14:33:34,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-04 14:33:34,677 INFO L175 Difference]: Start difference. First operand has 194 places, 188 transitions, 2091 flow. Second operand 10 states and 133 transitions. [2024-06-04 14:33:34,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 209 transitions, 3052 flow [2024-06-04 14:33:34,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 209 transitions, 2982 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:34,793 INFO L231 Difference]: Finished difference. Result has 196 places, 193 transitions, 2314 flow [2024-06-04 14:33:34,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2314, PETRI_PLACES=196, PETRI_TRANSITIONS=193} [2024-06-04 14:33:34,794 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-04 14:33:34,794 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 193 transitions, 2314 flow [2024-06-04 14:33:34,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:34,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:34,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:34,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 14:33:34,795 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)] === [2024-06-04 14:33:34,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:34,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1863963946, now seen corresponding path program 2 times [2024-06-04 14:33:34,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:34,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986586006] [2024-06-04 14:33:34,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:34,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:35,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:35,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:35,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986586006] [2024-06-04 14:33:35,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986586006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:35,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:35,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:35,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726258106] [2024-06-04 14:33:35,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:35,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:35,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:35,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:35,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:35,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:35,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 193 transitions, 2314 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:35,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:35,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:35,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:35,930 INFO L124 PetriNetUnfolderBase]: 409/762 cut-off events. [2024-06-04 14:33:35,944 INFO L125 PetriNetUnfolderBase]: For 61429/61429 co-relation queries the response was YES. [2024-06-04 14:33:35,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6557 conditions, 762 events. 409/762 cut-off events. For 61429/61429 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3726 event pairs, 33 based on Foata normal form. 1/761 useless extension candidates. Maximal degree in co-relation 6463. Up to 588 conditions per place. [2024-06-04 14:33:35,951 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 50 changer transitions 0/204 dead transitions. [2024-06-04 14:33:35,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 204 transitions, 2744 flow [2024-06-04 14:33:35,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:35,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:35,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-04 14:33:35,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 14:33:35,954 INFO L175 Difference]: Start difference. First operand has 196 places, 193 transitions, 2314 flow. Second operand 9 states and 117 transitions. [2024-06-04 14:33:35,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 204 transitions, 2744 flow [2024-06-04 14:33:36,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 204 transitions, 2546 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-04 14:33:36,091 INFO L231 Difference]: Finished difference. Result has 199 places, 193 transitions, 2223 flow [2024-06-04 14:33:36,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2223, PETRI_PLACES=199, PETRI_TRANSITIONS=193} [2024-06-04 14:33:36,092 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-04 14:33:36,092 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 193 transitions, 2223 flow [2024-06-04 14:33:36,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:36,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:36,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:36,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 14:33:36,093 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)] === [2024-06-04 14:33:36,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:36,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1863972626, now seen corresponding path program 1 times [2024-06-04 14:33:36,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:36,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637614375] [2024-06-04 14:33:36,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:36,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:37,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:37,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:37,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637614375] [2024-06-04 14:33:37,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637614375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:37,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:37,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:37,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224531395] [2024-06-04 14:33:37,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:37,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:37,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:37,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:37,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:37,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:37,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 193 transitions, 2223 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:37,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:37,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:37,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:38,168 INFO L124 PetriNetUnfolderBase]: 413/770 cut-off events. [2024-06-04 14:33:38,168 INFO L125 PetriNetUnfolderBase]: For 64484/64484 co-relation queries the response was YES. [2024-06-04 14:33:38,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6543 conditions, 770 events. 413/770 cut-off events. For 64484/64484 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3790 event pairs, 31 based on Foata normal form. 2/770 useless extension candidates. Maximal degree in co-relation 6448. Up to 683 conditions per place. [2024-06-04 14:33:38,174 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 188 selfloop transitions, 17 changer transitions 0/208 dead transitions. [2024-06-04 14:33:38,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 208 transitions, 2701 flow [2024-06-04 14:33:38,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:38,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:38,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 14:33:38,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-04 14:33:38,188 INFO L175 Difference]: Start difference. First operand has 199 places, 193 transitions, 2223 flow. Second operand 10 states and 118 transitions. [2024-06-04 14:33:38,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 208 transitions, 2701 flow [2024-06-04 14:33:38,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 208 transitions, 2612 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:38,294 INFO L231 Difference]: Finished difference. Result has 202 places, 194 transitions, 2204 flow [2024-06-04 14:33:38,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2134, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2204, PETRI_PLACES=202, PETRI_TRANSITIONS=194} [2024-06-04 14:33:38,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-04 14:33:38,296 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 194 transitions, 2204 flow [2024-06-04 14:33:38,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:38,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:38,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:38,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 14:33:38,296 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)] === [2024-06-04 14:33:38,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:38,297 INFO L85 PathProgramCache]: Analyzing trace with hash -676180780, now seen corresponding path program 8 times [2024-06-04 14:33:38,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:38,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673346543] [2024-06-04 14:33:38,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:38,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:39,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:39,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673346543] [2024-06-04 14:33:39,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673346543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:39,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:39,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:39,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185533368] [2024-06-04 14:33:39,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:39,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:39,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:39,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:39,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:39,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:39,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 194 transitions, 2204 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:39,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:39,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:39,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:39,828 INFO L124 PetriNetUnfolderBase]: 409/764 cut-off events. [2024-06-04 14:33:39,828 INFO L125 PetriNetUnfolderBase]: For 60986/60986 co-relation queries the response was YES. [2024-06-04 14:33:39,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6302 conditions, 764 events. 409/764 cut-off events. For 60986/60986 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3758 event pairs, 32 based on Foata normal form. 2/764 useless extension candidates. Maximal degree in co-relation 6206. Up to 525 conditions per place. [2024-06-04 14:33:39,835 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 68 changer transitions 0/208 dead transitions. [2024-06-04 14:33:39,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 208 transitions, 2892 flow [2024-06-04 14:33:39,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:39,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 14:33:39,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 14:33:39,836 INFO L175 Difference]: Start difference. First operand has 202 places, 194 transitions, 2204 flow. Second operand 10 states and 131 transitions. [2024-06-04 14:33:39,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 208 transitions, 2892 flow [2024-06-04 14:33:39,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 208 transitions, 2782 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:39,950 INFO L231 Difference]: Finished difference. Result has 204 places, 194 transitions, 2237 flow [2024-06-04 14:33:39,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2237, PETRI_PLACES=204, PETRI_TRANSITIONS=194} [2024-06-04 14:33:39,950 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-04 14:33:39,950 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 194 transitions, 2237 flow [2024-06-04 14:33:39,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:39,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:39,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:39,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 14:33:39,951 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)] === [2024-06-04 14:33:39,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:39,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2031835174, now seen corresponding path program 5 times [2024-06-04 14:33:39,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:39,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041804110] [2024-06-04 14:33:39,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:39,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:40,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:40,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041804110] [2024-06-04 14:33:40,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041804110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:40,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:40,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:40,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445134834] [2024-06-04 14:33:40,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:40,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:40,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:40,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:40,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:40,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:40,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 194 transitions, 2237 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:40,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:40,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:40,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:41,155 INFO L124 PetriNetUnfolderBase]: 406/760 cut-off events. [2024-06-04 14:33:41,155 INFO L125 PetriNetUnfolderBase]: For 58568/58571 co-relation queries the response was YES. [2024-06-04 14:33:41,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6173 conditions, 760 events. 406/760 cut-off events. For 58568/58571 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3740 event pairs, 37 based on Foata normal form. 2/757 useless extension candidates. Maximal degree in co-relation 6076. Up to 633 conditions per place. [2024-06-04 14:33:41,161 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 172 selfloop transitions, 30 changer transitions 0/205 dead transitions. [2024-06-04 14:33:41,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 205 transitions, 2675 flow [2024-06-04 14:33:41,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:41,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:41,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-04 14:33:41,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-04 14:33:41,162 INFO L175 Difference]: Start difference. First operand has 204 places, 194 transitions, 2237 flow. Second operand 9 states and 110 transitions. [2024-06-04 14:33:41,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 205 transitions, 2675 flow [2024-06-04 14:33:41,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 205 transitions, 2557 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:41,281 INFO L231 Difference]: Finished difference. Result has 205 places, 195 transitions, 2193 flow [2024-06-04 14:33:41,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2193, PETRI_PLACES=205, PETRI_TRANSITIONS=195} [2024-06-04 14:33:41,282 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-04 14:33:41,282 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 195 transitions, 2193 flow [2024-06-04 14:33:41,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:41,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:41,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:41,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 14:33:41,282 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)] === [2024-06-04 14:33:41,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:41,283 INFO L85 PathProgramCache]: Analyzing trace with hash 123032372, now seen corresponding path program 2 times [2024-06-04 14:33:41,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:41,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672793348] [2024-06-04 14:33:41,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:41,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:42,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:42,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:42,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672793348] [2024-06-04 14:33:42,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672793348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:42,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:42,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:42,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947958148] [2024-06-04 14:33:42,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:42,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:42,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:42,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:42,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:42,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:42,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 195 transitions, 2193 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:42,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:42,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:42,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:42,947 INFO L124 PetriNetUnfolderBase]: 410/768 cut-off events. [2024-06-04 14:33:42,948 INFO L125 PetriNetUnfolderBase]: For 60934/60937 co-relation queries the response was YES. [2024-06-04 14:33:42,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6185 conditions, 768 events. 410/768 cut-off events. For 60934/60937 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3781 event pairs, 33 based on Foata normal form. 4/768 useless extension candidates. Maximal degree in co-relation 6087. Up to 674 conditions per place. [2024-06-04 14:33:42,955 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 185 selfloop transitions, 19 changer transitions 0/207 dead transitions. [2024-06-04 14:33:42,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 207 transitions, 2663 flow [2024-06-04 14:33:42,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:42,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 14:33:42,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:33:42,956 INFO L175 Difference]: Start difference. First operand has 205 places, 195 transitions, 2193 flow. Second operand 9 states and 108 transitions. [2024-06-04 14:33:42,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 207 transitions, 2663 flow [2024-06-04 14:33:43,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 207 transitions, 2553 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:43,092 INFO L231 Difference]: Finished difference. Result has 206 places, 196 transitions, 2159 flow [2024-06-04 14:33:43,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2159, PETRI_PLACES=206, PETRI_TRANSITIONS=196} [2024-06-04 14:33:43,092 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-04 14:33:43,092 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 196 transitions, 2159 flow [2024-06-04 14:33:43,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:43,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:43,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:43,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 14:33:43,093 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)] === [2024-06-04 14:33:43,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:43,094 INFO L85 PathProgramCache]: Analyzing trace with hash 353019512, now seen corresponding path program 3 times [2024-06-04 14:33:43,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:43,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247352133] [2024-06-04 14:33:43,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:43,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:44,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:44,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:44,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247352133] [2024-06-04 14:33:44,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247352133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:44,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:44,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:44,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074371733] [2024-06-04 14:33:44,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:44,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:44,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:44,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:44,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:44,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:44,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 196 transitions, 2159 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:44,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:44,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:44,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:44,749 INFO L124 PetriNetUnfolderBase]: 421/788 cut-off events. [2024-06-04 14:33:44,749 INFO L125 PetriNetUnfolderBase]: For 67353/67353 co-relation queries the response was YES. [2024-06-04 14:33:44,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6466 conditions, 788 events. 421/788 cut-off events. For 67353/67353 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3915 event pairs, 33 based on Foata normal form. 2/788 useless extension candidates. Maximal degree in co-relation 6367. Up to 686 conditions per place. [2024-06-04 14:33:44,756 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 189 selfloop transitions, 20 changer transitions 0/212 dead transitions. [2024-06-04 14:33:44,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 212 transitions, 2805 flow [2024-06-04 14:33:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:33:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:33:44,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:33:44,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 14:33:44,757 INFO L175 Difference]: Start difference. First operand has 206 places, 196 transitions, 2159 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:33:44,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 212 transitions, 2805 flow [2024-06-04 14:33:44,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 212 transitions, 2739 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:44,878 INFO L231 Difference]: Finished difference. Result has 210 places, 198 transitions, 2207 flow [2024-06-04 14:33:44,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2207, PETRI_PLACES=210, PETRI_TRANSITIONS=198} [2024-06-04 14:33:44,878 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-04 14:33:44,878 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 198 transitions, 2207 flow [2024-06-04 14:33:44,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:44,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:44,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:44,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 14:33:44,879 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)] === [2024-06-04 14:33:44,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:44,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1049698380, now seen corresponding path program 4 times [2024-06-04 14:33:44,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:44,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334514822] [2024-06-04 14:33:44,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:44,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:46,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:46,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334514822] [2024-06-04 14:33:46,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334514822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:46,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:46,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:46,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442956696] [2024-06-04 14:33:46,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:46,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:46,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:46,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:46,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:46,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:46,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 198 transitions, 2207 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:46,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:46,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:46,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:46,790 INFO L124 PetriNetUnfolderBase]: 425/792 cut-off events. [2024-06-04 14:33:46,791 INFO L125 PetriNetUnfolderBase]: For 69102/69102 co-relation queries the response was YES. [2024-06-04 14:33:46,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6534 conditions, 792 events. 425/792 cut-off events. For 69102/69102 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3926 event pairs, 36 based on Foata normal form. 2/792 useless extension candidates. Maximal degree in co-relation 6434. Up to 713 conditions per place. [2024-06-04 14:33:46,798 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 189 selfloop transitions, 19 changer transitions 0/211 dead transitions. [2024-06-04 14:33:46,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 211 transitions, 2687 flow [2024-06-04 14:33:46,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:33:46,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:33:46,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:33:46,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 14:33:46,799 INFO L175 Difference]: Start difference. First operand has 210 places, 198 transitions, 2207 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:33:46,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 211 transitions, 2687 flow [2024-06-04 14:33:46,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 211 transitions, 2619 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 14:33:46,940 INFO L231 Difference]: Finished difference. Result has 214 places, 199 transitions, 2219 flow [2024-06-04 14:33:46,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2219, PETRI_PLACES=214, PETRI_TRANSITIONS=199} [2024-06-04 14:33:46,941 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-04 14:33:46,941 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 199 transitions, 2219 flow [2024-06-04 14:33:46,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:46,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:46,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:46,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 14:33:46,942 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)] === [2024-06-04 14:33:46,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:46,942 INFO L85 PathProgramCache]: Analyzing trace with hash 122786294, now seen corresponding path program 9 times [2024-06-04 14:33:46,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:46,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611969234] [2024-06-04 14:33:46,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:46,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:48,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:48,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:48,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611969234] [2024-06-04 14:33:48,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611969234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:48,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:48,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:48,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268390389] [2024-06-04 14:33:48,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:48,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:48,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:48,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:48,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:48,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:48,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 199 transitions, 2219 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:48,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:48,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:48,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:48,599 INFO L124 PetriNetUnfolderBase]: 453/846 cut-off events. [2024-06-04 14:33:48,599 INFO L125 PetriNetUnfolderBase]: For 82058/82061 co-relation queries the response was YES. [2024-06-04 14:33:48,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7487 conditions, 846 events. 453/846 cut-off events. For 82058/82061 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4280 event pairs, 40 based on Foata normal form. 1/842 useless extension candidates. Maximal degree in co-relation 7385. Up to 631 conditions per place. [2024-06-04 14:33:48,607 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 165 selfloop transitions, 54 changer transitions 0/222 dead transitions. [2024-06-04 14:33:48,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 222 transitions, 3401 flow [2024-06-04 14:33:48,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:48,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-04 14:33:48,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-04 14:33:48,608 INFO L175 Difference]: Start difference. First operand has 214 places, 199 transitions, 2219 flow. Second operand 10 states and 134 transitions. [2024-06-04 14:33:48,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 222 transitions, 3401 flow [2024-06-04 14:33:48,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 222 transitions, 3339 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 14:33:48,748 INFO L231 Difference]: Finished difference. Result has 216 places, 208 transitions, 2582 flow [2024-06-04 14:33:48,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2157, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2582, PETRI_PLACES=216, PETRI_TRANSITIONS=208} [2024-06-04 14:33:48,749 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-04 14:33:48,749 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 208 transitions, 2582 flow [2024-06-04 14:33:48,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:48,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:48,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:48,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 14:33:48,750 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)] === [2024-06-04 14:33:48,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:48,750 INFO L85 PathProgramCache]: Analyzing trace with hash -706738366, now seen corresponding path program 10 times [2024-06-04 14:33:48,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:48,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669352310] [2024-06-04 14:33:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:48,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:49,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:49,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669352310] [2024-06-04 14:33:49,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669352310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:49,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:49,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:49,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400314117] [2024-06-04 14:33:49,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:49,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:49,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:49,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:49,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:49,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:49,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 208 transitions, 2582 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:49,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:49,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:49,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:50,256 INFO L124 PetriNetUnfolderBase]: 464/868 cut-off events. [2024-06-04 14:33:50,256 INFO L125 PetriNetUnfolderBase]: For 90165/90168 co-relation queries the response was YES. [2024-06-04 14:33:50,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7991 conditions, 868 events. 464/868 cut-off events. For 90165/90168 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4438 event pairs, 42 based on Foata normal form. 2/865 useless extension candidates. Maximal degree in co-relation 7887. Up to 643 conditions per place. [2024-06-04 14:33:50,264 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 169 selfloop transitions, 55 changer transitions 0/227 dead transitions. [2024-06-04 14:33:50,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 227 transitions, 3659 flow [2024-06-04 14:33:50,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:50,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:50,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-04 14:33:50,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-04 14:33:50,267 INFO L175 Difference]: Start difference. First operand has 216 places, 208 transitions, 2582 flow. Second operand 10 states and 135 transitions. [2024-06-04 14:33:50,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 227 transitions, 3659 flow [2024-06-04 14:33:50,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 227 transitions, 3462 flow, removed 81 selfloop flow, removed 4 redundant places. [2024-06-04 14:33:50,428 INFO L231 Difference]: Finished difference. Result has 222 places, 213 transitions, 2673 flow [2024-06-04 14:33:50,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2673, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2024-06-04 14:33:50,429 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-04 14:33:50,429 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 2673 flow [2024-06-04 14:33:50,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:50,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:50,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:50,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 14:33:50,430 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)] === [2024-06-04 14:33:50,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:50,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1059817710, now seen corresponding path program 5 times [2024-06-04 14:33:50,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:50,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822048343] [2024-06-04 14:33:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:50,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:51,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:51,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822048343] [2024-06-04 14:33:51,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822048343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:51,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:51,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:51,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135161557] [2024-06-04 14:33:51,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:51,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:51,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:51,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:51,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:51,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:51,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 2673 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:51,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:51,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:51,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:51,922 INFO L124 PetriNetUnfolderBase]: 461/862 cut-off events. [2024-06-04 14:33:51,923 INFO L125 PetriNetUnfolderBase]: For 86568/86568 co-relation queries the response was YES. [2024-06-04 14:33:51,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 862 events. 461/862 cut-off events. For 86568/86568 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4408 event pairs, 37 based on Foata normal form. 2/862 useless extension candidates. Maximal degree in co-relation 7648. Up to 765 conditions per place. [2024-06-04 14:33:51,930 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 202 selfloop transitions, 18 changer transitions 0/223 dead transitions. [2024-06-04 14:33:51,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 223 transitions, 3137 flow [2024-06-04 14:33:51,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:51,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 14:33:51,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-04 14:33:51,932 INFO L175 Difference]: Start difference. First operand has 222 places, 213 transitions, 2673 flow. Second operand 9 states and 107 transitions. [2024-06-04 14:33:51,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 223 transitions, 3137 flow [2024-06-04 14:33:52,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 223 transitions, 2968 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-04 14:33:52,088 INFO L231 Difference]: Finished difference. Result has 225 places, 213 transitions, 2546 flow [2024-06-04 14:33:52,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2504, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2546, PETRI_PLACES=225, PETRI_TRANSITIONS=213} [2024-06-04 14:33:52,088 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-04 14:33:52,088 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 213 transitions, 2546 flow [2024-06-04 14:33:52,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:52,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:52,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:52,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 14:33:52,089 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)] === [2024-06-04 14:33:52,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:52,089 INFO L85 PathProgramCache]: Analyzing trace with hash -706499108, now seen corresponding path program 3 times [2024-06-04 14:33:52,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:52,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35863047] [2024-06-04 14:33:52,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:52,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:53,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:53,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35863047] [2024-06-04 14:33:53,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35863047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:53,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:53,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:33:53,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575092767] [2024-06-04 14:33:53,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:53,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:33:53,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:53,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:33:53,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:33:53,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:53,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 213 transitions, 2546 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:53,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:53,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:53,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:53,538 INFO L124 PetriNetUnfolderBase]: 459/860 cut-off events. [2024-06-04 14:33:53,538 INFO L125 PetriNetUnfolderBase]: For 82425/82428 co-relation queries the response was YES. [2024-06-04 14:33:53,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7481 conditions, 860 events. 459/860 cut-off events. For 82425/82428 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4414 event pairs, 40 based on Foata normal form. 1/856 useless extension candidates. Maximal degree in co-relation 7374. Up to 685 conditions per place. [2024-06-04 14:33:53,546 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 173 selfloop transitions, 47 changer transitions 0/223 dead transitions. [2024-06-04 14:33:53,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 223 transitions, 3148 flow [2024-06-04 14:33:53,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:33:53,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:33:53,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-04 14:33:53,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-04 14:33:53,547 INFO L175 Difference]: Start difference. First operand has 225 places, 213 transitions, 2546 flow. Second operand 9 states and 119 transitions. [2024-06-04 14:33:53,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 223 transitions, 3148 flow [2024-06-04 14:33:53,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 223 transitions, 3088 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:53,717 INFO L231 Difference]: Finished difference. Result has 226 places, 213 transitions, 2589 flow [2024-06-04 14:33:53,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2488, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2589, PETRI_PLACES=226, PETRI_TRANSITIONS=213} [2024-06-04 14:33:53,718 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-04 14:33:53,718 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 213 transitions, 2589 flow [2024-06-04 14:33:53,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:53,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:53,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:53,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 14:33:53,719 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)] === [2024-06-04 14:33:53,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:53,719 INFO L85 PathProgramCache]: Analyzing trace with hash -706507726, now seen corresponding path program 11 times [2024-06-04 14:33:53,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:53,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843950555] [2024-06-04 14:33:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:53,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:54,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:54,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843950555] [2024-06-04 14:33:54,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843950555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:54,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:54,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:54,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920150198] [2024-06-04 14:33:54,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:54,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:54,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:54,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:54,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:54,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:54,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 213 transitions, 2589 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:54,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:54,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:54,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:55,322 INFO L124 PetriNetUnfolderBase]: 455/856 cut-off events. [2024-06-04 14:33:55,322 INFO L125 PetriNetUnfolderBase]: For 80550/80553 co-relation queries the response was YES. [2024-06-04 14:33:55,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7329 conditions, 856 events. 455/856 cut-off events. For 80550/80553 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4397 event pairs, 39 based on Foata normal form. 2/853 useless extension candidates. Maximal degree in co-relation 7221. Up to 634 conditions per place. [2024-06-04 14:33:55,330 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 166 selfloop transitions, 57 changer transitions 0/226 dead transitions. [2024-06-04 14:33:55,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 226 transitions, 3367 flow [2024-06-04 14:33:55,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:55,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:55,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-04 14:33:55,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-04 14:33:55,331 INFO L175 Difference]: Start difference. First operand has 226 places, 213 transitions, 2589 flow. Second operand 10 states and 132 transitions. [2024-06-04 14:33:55,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 226 transitions, 3367 flow [2024-06-04 14:33:55,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 226 transitions, 3192 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:55,493 INFO L231 Difference]: Finished difference. Result has 228 places, 213 transitions, 2539 flow [2024-06-04 14:33:55,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2539, PETRI_PLACES=228, PETRI_TRANSITIONS=213} [2024-06-04 14:33:55,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-04 14:33:55,493 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 213 transitions, 2539 flow [2024-06-04 14:33:55,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:55,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:55,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:55,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 14:33:55,494 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)] === [2024-06-04 14:33:55,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:55,494 INFO L85 PathProgramCache]: Analyzing trace with hash -712994476, now seen corresponding path program 12 times [2024-06-04 14:33:55,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:55,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949020941] [2024-06-04 14:33:55,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:55,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:56,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:56,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949020941] [2024-06-04 14:33:56,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949020941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:56,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:56,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:56,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380942199] [2024-06-04 14:33:56,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:56,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:56,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:56,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:56,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:56,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:56,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 213 transitions, 2539 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:56,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:56,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:56,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:57,102 INFO L124 PetriNetUnfolderBase]: 462/871 cut-off events. [2024-06-04 14:33:57,102 INFO L125 PetriNetUnfolderBase]: For 81527/81530 co-relation queries the response was YES. [2024-06-04 14:33:57,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7437 conditions, 871 events. 462/871 cut-off events. For 81527/81530 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4507 event pairs, 39 based on Foata normal form. 2/868 useless extension candidates. Maximal degree in co-relation 7329. Up to 696 conditions per place. [2024-06-04 14:33:57,110 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 42 changer transitions 0/228 dead transitions. [2024-06-04 14:33:57,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 228 transitions, 3277 flow [2024-06-04 14:33:57,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:57,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:57,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-04 14:33:57,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-04 14:33:57,111 INFO L175 Difference]: Start difference. First operand has 228 places, 213 transitions, 2539 flow. Second operand 10 states and 126 transitions. [2024-06-04 14:33:57,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 228 transitions, 3277 flow [2024-06-04 14:33:57,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 228 transitions, 3159 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 14:33:57,288 INFO L231 Difference]: Finished difference. Result has 230 places, 216 transitions, 2610 flow [2024-06-04 14:33:57,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2610, PETRI_PLACES=230, PETRI_TRANSITIONS=216} [2024-06-04 14:33:57,289 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-04 14:33:57,289 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 216 transitions, 2610 flow [2024-06-04 14:33:57,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:57,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:57,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:57,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 14:33:57,290 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)] === [2024-06-04 14:33:57,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:57,290 INFO L85 PathProgramCache]: Analyzing trace with hash -713000986, now seen corresponding path program 13 times [2024-06-04 14:33:57,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:57,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177941225] [2024-06-04 14:33:57,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:57,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:33:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:33:58,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:33:58,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177941225] [2024-06-04 14:33:58,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177941225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:33:58,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:33:58,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:33:58,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685125285] [2024-06-04 14:33:58,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:33:58,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:33:58,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:33:58,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:33:58,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:33:58,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:33:58,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 216 transitions, 2610 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:58,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:33:58,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:33:58,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:33:58,882 INFO L124 PetriNetUnfolderBase]: 460/868 cut-off events. [2024-06-04 14:33:58,883 INFO L125 PetriNetUnfolderBase]: For 79224/79227 co-relation queries the response was YES. [2024-06-04 14:33:58,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7328 conditions, 868 events. 460/868 cut-off events. For 79224/79227 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4487 event pairs, 38 based on Foata normal form. 1/864 useless extension candidates. Maximal degree in co-relation 7219. Up to 695 conditions per place. [2024-06-04 14:33:58,890 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 182 selfloop transitions, 44 changer transitions 0/229 dead transitions. [2024-06-04 14:33:58,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 229 transitions, 3305 flow [2024-06-04 14:33:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:33:58,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:33:58,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 14:33:58,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-04 14:33:58,891 INFO L175 Difference]: Start difference. First operand has 230 places, 216 transitions, 2610 flow. Second operand 10 states and 127 transitions. [2024-06-04 14:33:58,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 229 transitions, 3305 flow [2024-06-04 14:33:59,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 229 transitions, 3116 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-04 14:33:59,036 INFO L231 Difference]: Finished difference. Result has 231 places, 218 transitions, 2593 flow [2024-06-04 14:33:59,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2424, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2593, PETRI_PLACES=231, PETRI_TRANSITIONS=218} [2024-06-04 14:33:59,037 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-04 14:33:59,037 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 218 transitions, 2593 flow [2024-06-04 14:33:59,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:33:59,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:33:59,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:33:59,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 14:33:59,038 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)] === [2024-06-04 14:33:59,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:33:59,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1059826638, now seen corresponding path program 14 times [2024-06-04 14:33:59,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:33:59,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983109027] [2024-06-04 14:33:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:33:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:33:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:00,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:00,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983109027] [2024-06-04 14:34:00,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983109027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:00,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:00,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:00,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658596039] [2024-06-04 14:34:00,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:00,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:00,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:00,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:00,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:00,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:00,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 218 transitions, 2593 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:00,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:00,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:00,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:00,498 INFO L124 PetriNetUnfolderBase]: 471/889 cut-off events. [2024-06-04 14:34:00,498 INFO L125 PetriNetUnfolderBase]: For 85520/85520 co-relation queries the response was YES. [2024-06-04 14:34:00,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7577 conditions, 889 events. 471/889 cut-off events. For 85520/85520 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4639 event pairs, 34 based on Foata normal form. 2/889 useless extension candidates. Maximal degree in co-relation 7467. Up to 775 conditions per place. [2024-06-04 14:34:00,507 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 23 changer transitions 0/235 dead transitions. [2024-06-04 14:34:00,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 235 transitions, 3429 flow [2024-06-04 14:34:00,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:00,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:00,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 14:34:00,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-04 14:34:00,508 INFO L175 Difference]: Start difference. First operand has 231 places, 218 transitions, 2593 flow. Second operand 10 states and 121 transitions. [2024-06-04 14:34:00,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 235 transitions, 3429 flow [2024-06-04 14:34:00,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 235 transitions, 3281 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-04 14:34:00,679 INFO L231 Difference]: Finished difference. Result has 234 places, 223 transitions, 2675 flow [2024-06-04 14:34:00,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2675, PETRI_PLACES=234, PETRI_TRANSITIONS=223} [2024-06-04 14:34:00,680 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-04 14:34:00,680 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 223 transitions, 2675 flow [2024-06-04 14:34:00,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:00,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:00,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:00,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 14:34:00,681 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)] === [2024-06-04 14:34:00,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:00,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1344917580, now seen corresponding path program 6 times [2024-06-04 14:34:00,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:00,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42362602] [2024-06-04 14:34:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:00,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:02,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:02,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42362602] [2024-06-04 14:34:02,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42362602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:02,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:02,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:02,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656803784] [2024-06-04 14:34:02,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:02,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:02,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:02,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:02,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:02,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:02,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 223 transitions, 2675 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:02,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:02,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:02,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:02,691 INFO L124 PetriNetUnfolderBase]: 468/885 cut-off events. [2024-06-04 14:34:02,691 INFO L125 PetriNetUnfolderBase]: For 83004/83007 co-relation queries the response was YES. [2024-06-04 14:34:02,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7344 conditions, 885 events. 468/885 cut-off events. For 83004/83007 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4634 event pairs, 32 based on Foata normal form. 4/885 useless extension candidates. Maximal degree in co-relation 7233. Up to 753 conditions per place. [2024-06-04 14:34:02,699 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 202 selfloop transitions, 30 changer transitions 0/235 dead transitions. [2024-06-04 14:34:02,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 235 transitions, 3171 flow [2024-06-04 14:34:02,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:02,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:02,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 14:34:02,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:34:02,700 INFO L175 Difference]: Start difference. First operand has 234 places, 223 transitions, 2675 flow. Second operand 10 states and 120 transitions. [2024-06-04 14:34:02,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 235 transitions, 3171 flow [2024-06-04 14:34:02,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 235 transitions, 3039 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-04 14:34:02,874 INFO L231 Difference]: Finished difference. Result has 238 places, 223 transitions, 2607 flow [2024-06-04 14:34:02,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2607, PETRI_PLACES=238, PETRI_TRANSITIONS=223} [2024-06-04 14:34:02,875 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-04 14:34:02,875 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 223 transitions, 2607 flow [2024-06-04 14:34:02,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:02,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:02,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:02,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 14:34:02,875 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)] === [2024-06-04 14:34:02,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:02,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1344926508, now seen corresponding path program 15 times [2024-06-04 14:34:02,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:02,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515142952] [2024-06-04 14:34:02,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:02,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:04,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:04,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515142952] [2024-06-04 14:34:04,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515142952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:04,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:04,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:04,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937478367] [2024-06-04 14:34:04,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:04,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:04,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:04,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:04,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:04,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:04,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 223 transitions, 2607 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:04,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:04,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:04,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:04,503 INFO L124 PetriNetUnfolderBase]: 479/903 cut-off events. [2024-06-04 14:34:04,503 INFO L125 PetriNetUnfolderBase]: For 87357/87360 co-relation queries the response was YES. [2024-06-04 14:34:04,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7630 conditions, 903 events. 479/903 cut-off events. For 87357/87360 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4725 event pairs, 38 based on Foata normal form. 2/900 useless extension candidates. Maximal degree in co-relation 7517. Up to 451 conditions per place. [2024-06-04 14:34:04,512 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 133 selfloop transitions, 111 changer transitions 0/247 dead transitions. [2024-06-04 14:34:04,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 247 transitions, 4069 flow [2024-06-04 14:34:04,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:04,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:04,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-04 14:34:04,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-04 14:34:04,513 INFO L175 Difference]: Start difference. First operand has 238 places, 223 transitions, 2607 flow. Second operand 10 states and 139 transitions. [2024-06-04 14:34:04,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 247 transitions, 4069 flow [2024-06-04 14:34:04,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 247 transitions, 3927 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-04 14:34:04,698 INFO L231 Difference]: Finished difference. Result has 237 places, 230 transitions, 2955 flow [2024-06-04 14:34:04,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2465, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2955, PETRI_PLACES=237, PETRI_TRANSITIONS=230} [2024-06-04 14:34:04,699 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-04 14:34:04,699 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 230 transitions, 2955 flow [2024-06-04 14:34:04,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:04,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:04,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:04,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 14:34:04,700 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)] === [2024-06-04 14:34:04,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:04,700 INFO L85 PathProgramCache]: Analyzing trace with hash -712994228, now seen corresponding path program 4 times [2024-06-04 14:34:04,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:04,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677087129] [2024-06-04 14:34:04,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:04,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:06,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:06,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:06,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677087129] [2024-06-04 14:34:06,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677087129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:06,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:06,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:06,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305916142] [2024-06-04 14:34:06,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:06,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:06,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:06,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:06,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:06,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:06,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 230 transitions, 2955 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:06,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:06,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:06,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:06,706 INFO L124 PetriNetUnfolderBase]: 474/892 cut-off events. [2024-06-04 14:34:06,706 INFO L125 PetriNetUnfolderBase]: For 84747/84750 co-relation queries the response was YES. [2024-06-04 14:34:06,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7562 conditions, 892 events. 474/892 cut-off events. For 84747/84750 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4667 event pairs, 42 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 7450. Up to 721 conditions per place. [2024-06-04 14:34:06,715 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 199 selfloop transitions, 38 changer transitions 0/240 dead transitions. [2024-06-04 14:34:06,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 240 transitions, 3453 flow [2024-06-04 14:34:06,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:06,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:06,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-04 14:34:06,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 14:34:06,716 INFO L175 Difference]: Start difference. First operand has 237 places, 230 transitions, 2955 flow. Second operand 10 states and 125 transitions. [2024-06-04 14:34:06,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 240 transitions, 3453 flow [2024-06-04 14:34:06,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 240 transitions, 3043 flow, removed 99 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:06,900 INFO L231 Difference]: Finished difference. Result has 239 places, 230 transitions, 2627 flow [2024-06-04 14:34:06,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2545, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2627, PETRI_PLACES=239, PETRI_TRANSITIONS=230} [2024-06-04 14:34:06,901 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-04 14:34:06,901 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 230 transitions, 2627 flow [2024-06-04 14:34:06,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:06,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:06,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:06,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 14:34:06,901 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)] === [2024-06-04 14:34:06,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:06,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1345163658, now seen corresponding path program 16 times [2024-06-04 14:34:06,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:06,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507308022] [2024-06-04 14:34:06,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:06,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:08,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:08,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:08,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507308022] [2024-06-04 14:34:08,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507308022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:08,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:08,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:08,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200974854] [2024-06-04 14:34:08,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:08,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:08,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:08,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:08,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:08,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:08,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 230 transitions, 2627 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:08,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:08,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:08,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:08,680 INFO L124 PetriNetUnfolderBase]: 482/911 cut-off events. [2024-06-04 14:34:08,680 INFO L125 PetriNetUnfolderBase]: For 84024/84027 co-relation queries the response was YES. [2024-06-04 14:34:08,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7354 conditions, 911 events. 482/911 cut-off events. For 84024/84027 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4809 event pairs, 37 based on Foata normal form. 1/907 useless extension candidates. Maximal degree in co-relation 7243. Up to 454 conditions per place. [2024-06-04 14:34:08,689 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 124 selfloop transitions, 122 changer transitions 0/249 dead transitions. [2024-06-04 14:34:08,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 249 transitions, 3809 flow [2024-06-04 14:34:08,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:08,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:08,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-04 14:34:08,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-04 14:34:08,690 INFO L175 Difference]: Start difference. First operand has 239 places, 230 transitions, 2627 flow. Second operand 10 states and 135 transitions. [2024-06-04 14:34:08,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 249 transitions, 3809 flow [2024-06-04 14:34:08,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 249 transitions, 3703 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:34:08,865 INFO L231 Difference]: Finished difference. Result has 240 places, 235 transitions, 2963 flow [2024-06-04 14:34:08,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2963, PETRI_PLACES=240, PETRI_TRANSITIONS=235} [2024-06-04 14:34:08,865 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-04 14:34:08,865 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 235 transitions, 2963 flow [2024-06-04 14:34:08,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:08,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:08,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:08,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 14:34:08,866 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)] === [2024-06-04 14:34:08,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:08,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1345157148, now seen corresponding path program 17 times [2024-06-04 14:34:08,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:08,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350708555] [2024-06-04 14:34:08,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:08,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:10,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:10,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350708555] [2024-06-04 14:34:10,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350708555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:10,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:10,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:10,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935464874] [2024-06-04 14:34:10,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:10,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:10,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:10,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:10,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:10,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:10,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 235 transitions, 2963 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:10,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:10,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:10,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:10,560 INFO L124 PetriNetUnfolderBase]: 478/905 cut-off events. [2024-06-04 14:34:10,560 INFO L125 PetriNetUnfolderBase]: For 84167/84170 co-relation queries the response was YES. [2024-06-04 14:34:10,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7408 conditions, 905 events. 478/905 cut-off events. For 84167/84170 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4762 event pairs, 37 based on Foata normal form. 2/902 useless extension candidates. Maximal degree in co-relation 7295. Up to 451 conditions per place. [2024-06-04 14:34:10,568 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 130 selfloop transitions, 117 changer transitions 0/250 dead transitions. [2024-06-04 14:34:10,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 250 transitions, 4023 flow [2024-06-04 14:34:10,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:10,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:10,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-04 14:34:10,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-04 14:34:10,569 INFO L175 Difference]: Start difference. First operand has 240 places, 235 transitions, 2963 flow. Second operand 10 states and 136 transitions. [2024-06-04 14:34:10,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 250 transitions, 4023 flow [2024-06-04 14:34:10,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 250 transitions, 3668 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-06-04 14:34:10,774 INFO L231 Difference]: Finished difference. Result has 244 places, 235 transitions, 2848 flow [2024-06-04 14:34:10,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2848, PETRI_PLACES=244, PETRI_TRANSITIONS=235} [2024-06-04 14:34:10,775 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-04 14:34:10,775 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 235 transitions, 2848 flow [2024-06-04 14:34:10,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:10,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:10,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:10,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 14:34:10,779 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)] === [2024-06-04 14:34:10,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:10,792 INFO L85 PathProgramCache]: Analyzing trace with hash 421021419, now seen corresponding path program 1 times [2024-06-04 14:34:10,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:10,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460558949] [2024-06-04 14:34:10,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:10,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:11,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:11,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:11,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460558949] [2024-06-04 14:34:11,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460558949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:11,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:11,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:11,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124028193] [2024-06-04 14:34:11,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:11,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:11,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:11,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:11,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:11,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:11,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 235 transitions, 2848 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:11,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:11,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:11,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:12,148 INFO L124 PetriNetUnfolderBase]: 482/912 cut-off events. [2024-06-04 14:34:12,148 INFO L125 PetriNetUnfolderBase]: For 85764/85764 co-relation queries the response was YES. [2024-06-04 14:34:12,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7343 conditions, 912 events. 482/912 cut-off events. For 85764/85764 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4822 event pairs, 13 based on Foata normal form. 2/912 useless extension candidates. Maximal degree in co-relation 7229. Up to 760 conditions per place. [2024-06-04 14:34:12,156 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 235 selfloop transitions, 19 changer transitions 0/257 dead transitions. [2024-06-04 14:34:12,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 257 transitions, 3442 flow [2024-06-04 14:34:12,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:12,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:12,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 14:34:12,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 14:34:12,157 INFO L175 Difference]: Start difference. First operand has 244 places, 235 transitions, 2848 flow. Second operand 10 states and 123 transitions. [2024-06-04 14:34:12,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 257 transitions, 3442 flow [2024-06-04 14:34:12,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 257 transitions, 3187 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 14:34:12,354 INFO L231 Difference]: Finished difference. Result has 245 places, 236 transitions, 2665 flow [2024-06-04 14:34:12,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2593, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2665, PETRI_PLACES=245, PETRI_TRANSITIONS=236} [2024-06-04 14:34:12,355 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-04 14:34:12,355 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 236 transitions, 2665 flow [2024-06-04 14:34:12,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:12,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:12,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:12,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 14:34:12,356 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)] === [2024-06-04 14:34:12,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:12,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1535897479, now seen corresponding path program 2 times [2024-06-04 14:34:12,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:12,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885272310] [2024-06-04 14:34:12,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:12,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:13,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:13,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885272310] [2024-06-04 14:34:13,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885272310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:13,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:13,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:13,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384297107] [2024-06-04 14:34:13,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:13,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:13,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:13,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:13,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:13,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:13,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 236 transitions, 2665 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:13,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:13,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:13,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:13,892 INFO L124 PetriNetUnfolderBase]: 486/920 cut-off events. [2024-06-04 14:34:13,892 INFO L125 PetriNetUnfolderBase]: For 87272/87272 co-relation queries the response was YES. [2024-06-04 14:34:13,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7205 conditions, 920 events. 486/920 cut-off events. For 87272/87272 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4877 event pairs, 27 based on Foata normal form. 2/920 useless extension candidates. Maximal degree in co-relation 7090. Up to 785 conditions per place. [2024-06-04 14:34:13,900 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 234 selfloop transitions, 20 changer transitions 0/257 dead transitions. [2024-06-04 14:34:13,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 257 transitions, 3259 flow [2024-06-04 14:34:13,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:13,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:13,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 14:34:13,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 14:34:13,901 INFO L175 Difference]: Start difference. First operand has 245 places, 236 transitions, 2665 flow. Second operand 10 states and 124 transitions. [2024-06-04 14:34:13,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 257 transitions, 3259 flow [2024-06-04 14:34:14,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 257 transitions, 3197 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:14,111 INFO L231 Difference]: Finished difference. Result has 247 places, 237 transitions, 2679 flow [2024-06-04 14:34:14,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2603, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2679, PETRI_PLACES=247, PETRI_TRANSITIONS=237} [2024-06-04 14:34:14,111 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-04 14:34:14,111 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 237 transitions, 2679 flow [2024-06-04 14:34:14,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:14,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:14,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:14,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 14:34:14,112 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)] === [2024-06-04 14:34:14,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:14,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1535901199, now seen corresponding path program 3 times [2024-06-04 14:34:14,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:14,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623719500] [2024-06-04 14:34:14,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:14,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:15,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:15,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623719500] [2024-06-04 14:34:15,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623719500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:15,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:15,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:15,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412936631] [2024-06-04 14:34:15,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:15,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:15,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:15,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:15,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:15,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:15,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 237 transitions, 2679 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:15,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:15,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:15,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:15,480 INFO L124 PetriNetUnfolderBase]: 490/928 cut-off events. [2024-06-04 14:34:15,480 INFO L125 PetriNetUnfolderBase]: For 91214/91214 co-relation queries the response was YES. [2024-06-04 14:34:15,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7269 conditions, 928 events. 490/928 cut-off events. For 91214/91214 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4954 event pairs, 29 based on Foata normal form. 2/928 useless extension candidates. Maximal degree in co-relation 7153. Up to 798 conditions per place. [2024-06-04 14:34:15,489 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 233 selfloop transitions, 21 changer transitions 0/257 dead transitions. [2024-06-04 14:34:15,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 257 transitions, 3273 flow [2024-06-04 14:34:15,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:15,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:15,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 14:34:15,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 14:34:15,490 INFO L175 Difference]: Start difference. First operand has 247 places, 237 transitions, 2679 flow. Second operand 10 states and 124 transitions. [2024-06-04 14:34:15,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 257 transitions, 3273 flow [2024-06-04 14:34:15,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 257 transitions, 3207 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:15,703 INFO L231 Difference]: Finished difference. Result has 249 places, 238 transitions, 2693 flow [2024-06-04 14:34:15,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2613, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2693, PETRI_PLACES=249, PETRI_TRANSITIONS=238} [2024-06-04 14:34:15,703 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-04 14:34:15,704 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 238 transitions, 2693 flow [2024-06-04 14:34:15,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:15,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:15,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:15,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 14:34:15,705 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)] === [2024-06-04 14:34:15,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:15,705 INFO L85 PathProgramCache]: Analyzing trace with hash 907158513, now seen corresponding path program 4 times [2024-06-04 14:34:15,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:15,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537735923] [2024-06-04 14:34:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:15,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:16,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:16,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:16,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537735923] [2024-06-04 14:34:16,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537735923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:16,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:16,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:16,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288638701] [2024-06-04 14:34:16,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:16,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:16,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:16,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:16,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:16,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:16,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 238 transitions, 2693 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:16,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:16,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:16,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:17,345 INFO L124 PetriNetUnfolderBase]: 494/936 cut-off events. [2024-06-04 14:34:17,345 INFO L125 PetriNetUnfolderBase]: For 93535/93535 co-relation queries the response was YES. [2024-06-04 14:34:17,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7333 conditions, 936 events. 494/936 cut-off events. For 93535/93535 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5005 event pairs, 29 based on Foata normal form. 2/936 useless extension candidates. Maximal degree in co-relation 7216. Up to 800 conditions per place. [2024-06-04 14:34:17,354 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 226 selfloop transitions, 26 changer transitions 0/255 dead transitions. [2024-06-04 14:34:17,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 255 transitions, 3275 flow [2024-06-04 14:34:17,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:17,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:17,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 14:34:17,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 14:34:17,355 INFO L175 Difference]: Start difference. First operand has 249 places, 238 transitions, 2693 flow. Second operand 10 states and 123 transitions. [2024-06-04 14:34:17,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 255 transitions, 3275 flow [2024-06-04 14:34:17,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 255 transitions, 3205 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:17,596 INFO L231 Difference]: Finished difference. Result has 251 places, 239 transitions, 2715 flow [2024-06-04 14:34:17,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2715, PETRI_PLACES=251, PETRI_TRANSITIONS=239} [2024-06-04 14:34:17,596 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-04 14:34:17,596 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 239 transitions, 2715 flow [2024-06-04 14:34:17,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:17,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:17,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:17,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 14:34:17,597 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)] === [2024-06-04 14:34:17,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:17,597 INFO L85 PathProgramCache]: Analyzing trace with hash 901796133, now seen corresponding path program 5 times [2024-06-04 14:34:17,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:17,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638339256] [2024-06-04 14:34:17,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:17,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:18,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:18,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638339256] [2024-06-04 14:34:18,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638339256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:18,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:18,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:18,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229250611] [2024-06-04 14:34:18,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:18,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:18,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:18,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:18,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:18,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:18,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 239 transitions, 2715 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:18,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:18,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:18,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:19,235 INFO L124 PetriNetUnfolderBase]: 498/944 cut-off events. [2024-06-04 14:34:19,236 INFO L125 PetriNetUnfolderBase]: For 95781/95781 co-relation queries the response was YES. [2024-06-04 14:34:19,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7404 conditions, 944 events. 498/944 cut-off events. For 95781/95781 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5066 event pairs, 31 based on Foata normal form. 2/944 useless extension candidates. Maximal degree in co-relation 7286. Up to 816 conditions per place. [2024-06-04 14:34:19,244 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 230 selfloop transitions, 24 changer transitions 0/257 dead transitions. [2024-06-04 14:34:19,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 257 transitions, 3316 flow [2024-06-04 14:34:19,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:19,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 14:34:19,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-04 14:34:19,245 INFO L175 Difference]: Start difference. First operand has 251 places, 239 transitions, 2715 flow. Second operand 10 states and 121 transitions. [2024-06-04 14:34:19,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 257 transitions, 3316 flow [2024-06-04 14:34:19,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 257 transitions, 3232 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:19,467 INFO L231 Difference]: Finished difference. Result has 254 places, 241 transitions, 2740 flow [2024-06-04 14:34:19,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2633, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2740, PETRI_PLACES=254, PETRI_TRANSITIONS=241} [2024-06-04 14:34:19,468 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-04 14:34:19,468 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 241 transitions, 2740 flow [2024-06-04 14:34:19,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:19,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:19,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:19,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 14:34:19,468 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)] === [2024-06-04 14:34:19,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:19,469 INFO L85 PathProgramCache]: Analyzing trace with hash 901648263, now seen corresponding path program 6 times [2024-06-04 14:34:19,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:19,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996992289] [2024-06-04 14:34:19,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:19,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:20,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:20,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996992289] [2024-06-04 14:34:20,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996992289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:20,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:20,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:20,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462839567] [2024-06-04 14:34:20,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:20,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:20,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:20,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:20,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:20,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:20,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 241 transitions, 2740 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:20,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:20,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:20,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:20,874 INFO L124 PetriNetUnfolderBase]: 502/952 cut-off events. [2024-06-04 14:34:20,874 INFO L125 PetriNetUnfolderBase]: For 98151/98151 co-relation queries the response was YES. [2024-06-04 14:34:20,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7469 conditions, 952 events. 502/952 cut-off events. For 98151/98151 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5139 event pairs, 29 based on Foata normal form. 2/952 useless extension candidates. Maximal degree in co-relation 7349. Up to 819 conditions per place. [2024-06-04 14:34:20,883 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 233 selfloop transitions, 23 changer transitions 0/259 dead transitions. [2024-06-04 14:34:20,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 259 transitions, 3336 flow [2024-06-04 14:34:20,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:20,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:20,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 14:34:20,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-04 14:34:20,884 INFO L175 Difference]: Start difference. First operand has 254 places, 241 transitions, 2740 flow. Second operand 10 states and 121 transitions. [2024-06-04 14:34:20,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 259 transitions, 3336 flow [2024-06-04 14:34:21,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 259 transitions, 3260 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-04 14:34:21,131 INFO L231 Difference]: Finished difference. Result has 257 places, 242 transitions, 2754 flow [2024-06-04 14:34:21,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2664, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2754, PETRI_PLACES=257, PETRI_TRANSITIONS=242} [2024-06-04 14:34:21,132 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-04 14:34:21,132 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 242 transitions, 2754 flow [2024-06-04 14:34:21,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:21,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:21,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:21,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 14:34:21,132 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)] === [2024-06-04 14:34:21,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:21,133 INFO L85 PathProgramCache]: Analyzing trace with hash 907164465, now seen corresponding path program 1 times [2024-06-04 14:34:21,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:21,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615346967] [2024-06-04 14:34:21,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:21,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:22,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:22,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615346967] [2024-06-04 14:34:22,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615346967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:22,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:22,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:22,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012737311] [2024-06-04 14:34:22,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:22,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:22,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:22,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:22,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:22,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:22,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 242 transitions, 2754 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:22,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:22,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:22,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:23,425 INFO L124 PetriNetUnfolderBase]: 505/957 cut-off events. [2024-06-04 14:34:23,425 INFO L125 PetriNetUnfolderBase]: For 96801/96801 co-relation queries the response was YES. [2024-06-04 14:34:23,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7507 conditions, 957 events. 505/957 cut-off events. For 96801/96801 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5157 event pairs, 31 based on Foata normal form. 1/956 useless extension candidates. Maximal degree in co-relation 7386. Up to 771 conditions per place. [2024-06-04 14:34:23,434 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 216 selfloop transitions, 44 changer transitions 0/263 dead transitions. [2024-06-04 14:34:23,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 263 transitions, 3714 flow [2024-06-04 14:34:23,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:34:23,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:34:23,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 14:34:23,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-04 14:34:23,435 INFO L175 Difference]: Start difference. First operand has 257 places, 242 transitions, 2754 flow. Second operand 11 states and 140 transitions. [2024-06-04 14:34:23,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 263 transitions, 3714 flow [2024-06-04 14:34:23,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 263 transitions, 3634 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:23,723 INFO L231 Difference]: Finished difference. Result has 260 places, 244 transitions, 2823 flow [2024-06-04 14:34:23,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2823, PETRI_PLACES=260, PETRI_TRANSITIONS=244} [2024-06-04 14:34:23,723 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-04 14:34:23,723 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 244 transitions, 2823 flow [2024-06-04 14:34:23,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:23,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:23,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:23,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 14:34:23,724 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)] === [2024-06-04 14:34:23,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:23,725 INFO L85 PathProgramCache]: Analyzing trace with hash 907366275, now seen corresponding path program 2 times [2024-06-04 14:34:23,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:23,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383345666] [2024-06-04 14:34:23,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:23,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:25,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:25,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383345666] [2024-06-04 14:34:25,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383345666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:25,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:25,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:25,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213821616] [2024-06-04 14:34:25,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:25,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:25,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:25,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:25,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:25,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:25,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 244 transitions, 2823 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:25,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:25,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:25,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:25,859 INFO L124 PetriNetUnfolderBase]: 501/951 cut-off events. [2024-06-04 14:34:25,860 INFO L125 PetriNetUnfolderBase]: For 94959/94959 co-relation queries the response was YES. [2024-06-04 14:34:25,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7272 conditions, 951 events. 501/951 cut-off events. For 94959/94959 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5140 event pairs, 31 based on Foata normal form. 2/951 useless extension candidates. Maximal degree in co-relation 7150. Up to 794 conditions per place. [2024-06-04 14:34:25,868 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 39 changer transitions 0/260 dead transitions. [2024-06-04 14:34:25,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 260 transitions, 3381 flow [2024-06-04 14:34:25,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:34:25,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:34:25,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 14:34:25,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 14:34:25,870 INFO L175 Difference]: Start difference. First operand has 260 places, 244 transitions, 2823 flow. Second operand 11 states and 137 transitions. [2024-06-04 14:34:25,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 260 transitions, 3381 flow [2024-06-04 14:34:26,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 260 transitions, 3203 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:26,110 INFO L231 Difference]: Finished difference. Result has 264 places, 244 transitions, 2736 flow [2024-06-04 14:34:26,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2645, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2736, PETRI_PLACES=264, PETRI_TRANSITIONS=244} [2024-06-04 14:34:26,111 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-04 14:34:26,111 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 244 transitions, 2736 flow [2024-06-04 14:34:26,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:26,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:26,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:26,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 14:34:26,111 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)] === [2024-06-04 14:34:26,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:26,112 INFO L85 PathProgramCache]: Analyzing trace with hash 888939968, now seen corresponding path program 1 times [2024-06-04 14:34:26,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:26,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175179979] [2024-06-04 14:34:26,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:26,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:27,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:27,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175179979] [2024-06-04 14:34:27,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175179979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:27,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:27,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:27,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139655591] [2024-06-04 14:34:27,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:27,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:27,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:27,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:27,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:27,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:27,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 244 transitions, 2736 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:27,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:27,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:27,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:27,563 INFO L124 PetriNetUnfolderBase]: 521/995 cut-off events. [2024-06-04 14:34:27,564 INFO L125 PetriNetUnfolderBase]: For 134387/134387 co-relation queries the response was YES. [2024-06-04 14:34:27,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7542 conditions, 995 events. 521/995 cut-off events. For 134387/134387 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5452 event pairs, 35 based on Foata normal form. 12/1005 useless extension candidates. Maximal degree in co-relation 7418. Up to 808 conditions per place. [2024-06-04 14:34:27,573 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 228 selfloop transitions, 27 changer transitions 7/265 dead transitions. [2024-06-04 14:34:27,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 265 transitions, 3428 flow [2024-06-04 14:34:27,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:27,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:27,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-04 14:34:27,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-04 14:34:27,574 INFO L175 Difference]: Start difference. First operand has 264 places, 244 transitions, 2736 flow. Second operand 10 states and 129 transitions. [2024-06-04 14:34:27,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 265 transitions, 3428 flow [2024-06-04 14:34:27,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 265 transitions, 3294 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 14:34:27,835 INFO L231 Difference]: Finished difference. Result has 264 places, 242 transitions, 2639 flow [2024-06-04 14:34:27,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2602, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2639, PETRI_PLACES=264, PETRI_TRANSITIONS=242} [2024-06-04 14:34:27,836 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-04 14:34:27,836 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 242 transitions, 2639 flow [2024-06-04 14:34:27,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:27,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:27,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:27,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 14:34:27,836 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)] === [2024-06-04 14:34:27,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:27,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1747004371, now seen corresponding path program 7 times [2024-06-04 14:34:27,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:27,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917090688] [2024-06-04 14:34:27,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:27,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:29,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:29,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917090688] [2024-06-04 14:34:29,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917090688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:29,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:29,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:29,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742410676] [2024-06-04 14:34:29,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:29,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:29,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:29,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:29,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:29,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:29,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 242 transitions, 2639 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:29,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:29,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:29,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:29,583 INFO L124 PetriNetUnfolderBase]: 501/955 cut-off events. [2024-06-04 14:34:29,583 INFO L125 PetriNetUnfolderBase]: For 98670/98670 co-relation queries the response was YES. [2024-06-04 14:34:29,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7237 conditions, 955 events. 501/955 cut-off events. For 98670/98670 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5195 event pairs, 33 based on Foata normal form. 2/955 useless extension candidates. Maximal degree in co-relation 7112. Up to 812 conditions per place. [2024-06-04 14:34:29,591 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 224 selfloop transitions, 29 changer transitions 0/256 dead transitions. [2024-06-04 14:34:29,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 256 transitions, 3217 flow [2024-06-04 14:34:29,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:29,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:29,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 14:34:29,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 14:34:29,592 INFO L175 Difference]: Start difference. First operand has 264 places, 242 transitions, 2639 flow. Second operand 10 states and 123 transitions. [2024-06-04 14:34:29,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 256 transitions, 3217 flow [2024-06-04 14:34:29,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 256 transitions, 3089 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-04 14:34:29,851 INFO L231 Difference]: Finished difference. Result has 263 places, 243 transitions, 2615 flow [2024-06-04 14:34:29,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2511, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2615, PETRI_PLACES=263, PETRI_TRANSITIONS=243} [2024-06-04 14:34:29,852 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-04 14:34:29,852 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 243 transitions, 2615 flow [2024-06-04 14:34:29,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:29,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:29,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:29,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 14:34:29,852 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)] === [2024-06-04 14:34:29,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:29,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1741641991, now seen corresponding path program 8 times [2024-06-04 14:34:29,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:29,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332777433] [2024-06-04 14:34:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:29,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:30,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:30,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:30,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332777433] [2024-06-04 14:34:30,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332777433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:30,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:30,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:30,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58289683] [2024-06-04 14:34:30,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:30,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:30,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:30,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:30,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:31,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:31,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 243 transitions, 2615 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:31,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:31,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:31,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:31,412 INFO L124 PetriNetUnfolderBase]: 505/963 cut-off events. [2024-06-04 14:34:31,413 INFO L125 PetriNetUnfolderBase]: For 101442/101442 co-relation queries the response was YES. [2024-06-04 14:34:31,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7301 conditions, 963 events. 505/963 cut-off events. For 101442/101442 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5253 event pairs, 33 based on Foata normal form. 2/963 useless extension candidates. Maximal degree in co-relation 7175. Up to 826 conditions per place. [2024-06-04 14:34:31,422 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 228 selfloop transitions, 27 changer transitions 0/258 dead transitions. [2024-06-04 14:34:31,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 258 transitions, 3211 flow [2024-06-04 14:34:31,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:31,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:31,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 14:34:31,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-04 14:34:31,423 INFO L175 Difference]: Start difference. First operand has 263 places, 243 transitions, 2615 flow. Second operand 10 states and 121 transitions. [2024-06-04 14:34:31,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 258 transitions, 3211 flow [2024-06-04 14:34:31,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 258 transitions, 3115 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:31,654 INFO L231 Difference]: Finished difference. Result has 266 places, 245 transitions, 2638 flow [2024-06-04 14:34:31,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2638, PETRI_PLACES=266, PETRI_TRANSITIONS=245} [2024-06-04 14:34:31,655 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-04 14:34:31,655 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 245 transitions, 2638 flow [2024-06-04 14:34:31,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:31,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:31,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:31,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 14:34:31,656 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)] === [2024-06-04 14:34:31,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:31,656 INFO L85 PathProgramCache]: Analyzing trace with hash -2054738575, now seen corresponding path program 9 times [2024-06-04 14:34:31,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:31,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105506930] [2024-06-04 14:34:31,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:31,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:32,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:32,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105506930] [2024-06-04 14:34:32,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105506930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:32,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:32,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:32,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330237820] [2024-06-04 14:34:32,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:32,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:32,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:32,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:32,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:32,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 245 transitions, 2638 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:32,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:32,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:32,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:33,243 INFO L124 PetriNetUnfolderBase]: 509/971 cut-off events. [2024-06-04 14:34:33,243 INFO L125 PetriNetUnfolderBase]: For 103711/103711 co-relation queries the response was YES. [2024-06-04 14:34:33,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7362 conditions, 971 events. 509/971 cut-off events. For 103711/103711 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5329 event pairs, 35 based on Foata normal form. 2/971 useless extension candidates. Maximal degree in co-relation 7234. Up to 806 conditions per place. [2024-06-04 14:34:33,252 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 218 selfloop transitions, 38 changer transitions 0/259 dead transitions. [2024-06-04 14:34:33,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 259 transitions, 3226 flow [2024-06-04 14:34:33,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:33,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 14:34:33,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 14:34:33,254 INFO L175 Difference]: Start difference. First operand has 266 places, 245 transitions, 2638 flow. Second operand 10 states and 123 transitions. [2024-06-04 14:34:33,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 259 transitions, 3226 flow [2024-06-04 14:34:33,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 259 transitions, 3137 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-04 14:34:33,522 INFO L231 Difference]: Finished difference. Result has 269 places, 246 transitions, 2675 flow [2024-06-04 14:34:33,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2549, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2675, PETRI_PLACES=269, PETRI_TRANSITIONS=246} [2024-06-04 14:34:33,523 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-04 14:34:33,523 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 246 transitions, 2675 flow [2024-06-04 14:34:33,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:33,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:33,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:33,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 14:34:33,523 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)] === [2024-06-04 14:34:33,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:33,524 INFO L85 PathProgramCache]: Analyzing trace with hash -427806397, now seen corresponding path program 10 times [2024-06-04 14:34:33,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:33,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865935955] [2024-06-04 14:34:33,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:33,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:34,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:34,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865935955] [2024-06-04 14:34:34,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865935955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:34,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:34,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:34,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856041190] [2024-06-04 14:34:34,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:34,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:34,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:34,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:34,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:34,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:34,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 246 transitions, 2675 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:34,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:34,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:34,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:35,115 INFO L124 PetriNetUnfolderBase]: 513/979 cut-off events. [2024-06-04 14:34:35,116 INFO L125 PetriNetUnfolderBase]: For 106174/106174 co-relation queries the response was YES. [2024-06-04 14:34:35,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7446 conditions, 979 events. 513/979 cut-off events. For 106174/106174 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5378 event pairs, 33 based on Foata normal form. 2/979 useless extension candidates. Maximal degree in co-relation 7317. Up to 837 conditions per place. [2024-06-04 14:34:35,125 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 232 selfloop transitions, 26 changer transitions 0/261 dead transitions. [2024-06-04 14:34:35,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 261 transitions, 3271 flow [2024-06-04 14:34:35,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:35,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 14:34:35,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-04 14:34:35,129 INFO L175 Difference]: Start difference. First operand has 269 places, 246 transitions, 2675 flow. Second operand 10 states and 121 transitions. [2024-06-04 14:34:35,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 261 transitions, 3271 flow [2024-06-04 14:34:35,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 261 transitions, 3155 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:35,428 INFO L231 Difference]: Finished difference. Result has 271 places, 247 transitions, 2663 flow [2024-06-04 14:34:35,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2559, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2663, PETRI_PLACES=271, PETRI_TRANSITIONS=247} [2024-06-04 14:34:35,428 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-04 14:34:35,428 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 247 transitions, 2663 flow [2024-06-04 14:34:35,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:35,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:35,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:35,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 14:34:35,429 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)] === [2024-06-04 14:34:35,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:35,429 INFO L85 PathProgramCache]: Analyzing trace with hash -228350785, now seen corresponding path program 3 times [2024-06-04 14:34:35,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:35,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846022285] [2024-06-04 14:34:35,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:35,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:37,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:37,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846022285] [2024-06-04 14:34:37,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846022285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:37,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:37,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:37,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684746933] [2024-06-04 14:34:37,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:37,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:37,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:37,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:37,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:37,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:37,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 247 transitions, 2663 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:37,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:37,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:37,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:38,019 INFO L124 PetriNetUnfolderBase]: 516/984 cut-off events. [2024-06-04 14:34:38,020 INFO L125 PetriNetUnfolderBase]: For 103865/103865 co-relation queries the response was YES. [2024-06-04 14:34:38,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7438 conditions, 984 events. 516/984 cut-off events. For 103865/103865 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5422 event pairs, 35 based on Foata normal form. 1/983 useless extension candidates. Maximal degree in co-relation 7308. Up to 759 conditions per place. [2024-06-04 14:34:38,030 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 59 changer transitions 0/267 dead transitions. [2024-06-04 14:34:38,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 267 transitions, 3310 flow [2024-06-04 14:34:38,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:34:38,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:34:38,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 14:34:38,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 14:34:38,031 INFO L175 Difference]: Start difference. First operand has 271 places, 247 transitions, 2663 flow. Second operand 11 states and 137 transitions. [2024-06-04 14:34:38,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 267 transitions, 3310 flow [2024-06-04 14:34:38,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 267 transitions, 3216 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:38,330 INFO L231 Difference]: Finished difference. Result has 276 places, 253 transitions, 2823 flow [2024-06-04 14:34:38,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2569, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2823, PETRI_PLACES=276, PETRI_TRANSITIONS=253} [2024-06-04 14:34:38,331 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-04 14:34:38,331 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 253 transitions, 2823 flow [2024-06-04 14:34:38,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:38,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:38,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:38,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 14:34:38,331 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)] === [2024-06-04 14:34:38,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:38,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2046295263, now seen corresponding path program 4 times [2024-06-04 14:34:38,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:38,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127917065] [2024-06-04 14:34:38,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:38,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:40,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:40,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127917065] [2024-06-04 14:34:40,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127917065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:40,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:40,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:40,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681248669] [2024-06-04 14:34:40,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:40,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:40,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:40,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:40,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:40,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:40,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 253 transitions, 2823 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:40,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:40,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:40,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:40,740 INFO L124 PetriNetUnfolderBase]: 519/989 cut-off events. [2024-06-04 14:34:40,740 INFO L125 PetriNetUnfolderBase]: For 105657/105657 co-relation queries the response was YES. [2024-06-04 14:34:40,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7582 conditions, 989 events. 519/989 cut-off events. For 105657/105657 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5445 event pairs, 35 based on Foata normal form. 1/988 useless extension candidates. Maximal degree in co-relation 7449. Up to 837 conditions per place. [2024-06-04 14:34:40,750 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 229 selfloop transitions, 36 changer transitions 0/268 dead transitions. [2024-06-04 14:34:40,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 268 transitions, 3445 flow [2024-06-04 14:34:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:34:40,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:34:40,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:34:40,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 14:34:40,751 INFO L175 Difference]: Start difference. First operand has 276 places, 253 transitions, 2823 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:34:40,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 268 transitions, 3445 flow [2024-06-04 14:34:41,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 268 transitions, 3325 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-04 14:34:41,026 INFO L231 Difference]: Finished difference. Result has 281 places, 255 transitions, 2844 flow [2024-06-04 14:34:41,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2703, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2844, PETRI_PLACES=281, PETRI_TRANSITIONS=255} [2024-06-04 14:34:41,026 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-04 14:34:41,026 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 255 transitions, 2844 flow [2024-06-04 14:34:41,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:41,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:41,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:41,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 14:34:41,027 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)] === [2024-06-04 14:34:41,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:41,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1747219852, now seen corresponding path program 2 times [2024-06-04 14:34:41,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:41,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304802616] [2024-06-04 14:34:41,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:41,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:42,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:42,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304802616] [2024-06-04 14:34:42,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304802616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:42,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:42,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:42,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248391332] [2024-06-04 14:34:42,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:42,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:42,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:42,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:42,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:42,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:42,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 255 transitions, 2844 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:42,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:42,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:42,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:42,651 INFO L124 PetriNetUnfolderBase]: 539/1033 cut-off events. [2024-06-04 14:34:42,651 INFO L125 PetriNetUnfolderBase]: For 153023/153023 co-relation queries the response was YES. [2024-06-04 14:34:42,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7870 conditions, 1033 events. 539/1033 cut-off events. For 153023/153023 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5751 event pairs, 39 based on Foata normal form. 12/1043 useless extension candidates. Maximal degree in co-relation 7736. Up to 839 conditions per place. [2024-06-04 14:34:42,661 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 233 selfloop transitions, 30 changer transitions 7/273 dead transitions. [2024-06-04 14:34:42,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 273 transitions, 3542 flow [2024-06-04 14:34:42,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:42,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-04 14:34:42,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-04 14:34:42,663 INFO L175 Difference]: Start difference. First operand has 281 places, 255 transitions, 2844 flow. Second operand 10 states and 129 transitions. [2024-06-04 14:34:42,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 273 transitions, 3542 flow [2024-06-04 14:34:42,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 273 transitions, 3401 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:42,998 INFO L231 Difference]: Finished difference. Result has 283 places, 253 transitions, 2747 flow [2024-06-04 14:34:42,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2703, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2747, PETRI_PLACES=283, PETRI_TRANSITIONS=253} [2024-06-04 14:34:42,999 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-04 14:34:42,999 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 253 transitions, 2747 flow [2024-06-04 14:34:42,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:42,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:42,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:42,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 14:34:42,999 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)] === [2024-06-04 14:34:43,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:43,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1747212133, now seen corresponding path program 5 times [2024-06-04 14:34:43,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:43,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627497411] [2024-06-04 14:34:43,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:43,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:44,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:44,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:44,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627497411] [2024-06-04 14:34:44,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627497411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:44,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:44,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:44,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084467702] [2024-06-04 14:34:44,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:44,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:44,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:44,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:44,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:44,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:44,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 253 transitions, 2747 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:44,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:44,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:44,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:45,054 INFO L124 PetriNetUnfolderBase]: 513/982 cut-off events. [2024-06-04 14:34:45,054 INFO L125 PetriNetUnfolderBase]: For 105134/105134 co-relation queries the response was YES. [2024-06-04 14:34:45,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7344 conditions, 982 events. 513/982 cut-off events. For 105134/105134 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5412 event pairs, 35 based on Foata normal form. 1/981 useless extension candidates. Maximal degree in co-relation 7209. Up to 833 conditions per place. [2024-06-04 14:34:45,064 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 228 selfloop transitions, 35 changer transitions 0/266 dead transitions. [2024-06-04 14:34:45,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 266 transitions, 3305 flow [2024-06-04 14:34:45,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:34:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:34:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 14:34:45,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 14:34:45,066 INFO L175 Difference]: Start difference. First operand has 283 places, 253 transitions, 2747 flow. Second operand 11 states and 134 transitions. [2024-06-04 14:34:45,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 266 transitions, 3305 flow [2024-06-04 14:34:45,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 266 transitions, 3189 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:45,379 INFO L231 Difference]: Finished difference. Result has 286 places, 253 transitions, 2706 flow [2024-06-04 14:34:45,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2631, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2706, PETRI_PLACES=286, PETRI_TRANSITIONS=253} [2024-06-04 14:34:45,379 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-04 14:34:45,379 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 253 transitions, 2706 flow [2024-06-04 14:34:45,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:45,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:45,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:45,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 14:34:45,380 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)] === [2024-06-04 14:34:45,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:45,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1941159262, now seen corresponding path program 3 times [2024-06-04 14:34:45,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:45,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419523419] [2024-06-04 14:34:45,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:45,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:46,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:46,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419523419] [2024-06-04 14:34:46,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419523419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:46,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:46,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:46,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753673314] [2024-06-04 14:34:46,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:46,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:46,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:46,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:46,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:46,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:46,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 253 transitions, 2706 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:46,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:46,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:46,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:46,849 INFO L124 PetriNetUnfolderBase]: 517/990 cut-off events. [2024-06-04 14:34:46,849 INFO L125 PetriNetUnfolderBase]: For 111235/111235 co-relation queries the response was YES. [2024-06-04 14:34:46,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7361 conditions, 990 events. 517/990 cut-off events. For 111235/111235 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5474 event pairs, 37 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 7225. Up to 802 conditions per place. [2024-06-04 14:34:46,860 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 219 selfloop transitions, 45 changer transitions 0/267 dead transitions. [2024-06-04 14:34:46,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 267 transitions, 3288 flow [2024-06-04 14:34:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:46,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-04 14:34:46,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 14:34:46,861 INFO L175 Difference]: Start difference. First operand has 286 places, 253 transitions, 2706 flow. Second operand 10 states and 128 transitions. [2024-06-04 14:34:46,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 267 transitions, 3288 flow [2024-06-04 14:34:47,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 267 transitions, 3188 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 14:34:47,198 INFO L231 Difference]: Finished difference. Result has 286 places, 254 transitions, 2724 flow [2024-06-04 14:34:47,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2606, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2724, PETRI_PLACES=286, PETRI_TRANSITIONS=254} [2024-06-04 14:34:47,198 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-04 14:34:47,198 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 254 transitions, 2724 flow [2024-06-04 14:34:47,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:47,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:47,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:47,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 14:34:47,199 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)] === [2024-06-04 14:34:47,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:47,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1941151543, now seen corresponding path program 6 times [2024-06-04 14:34:47,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:47,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398052400] [2024-06-04 14:34:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:47,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:48,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:48,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:48,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398052400] [2024-06-04 14:34:48,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398052400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:48,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:48,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:48,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964933416] [2024-06-04 14:34:48,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:48,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:48,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:48,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:48,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:49,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:49,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 254 transitions, 2724 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:49,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:49,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:49,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:49,677 INFO L124 PetriNetUnfolderBase]: 515/987 cut-off events. [2024-06-04 14:34:49,678 INFO L125 PetriNetUnfolderBase]: For 104649/104649 co-relation queries the response was YES. [2024-06-04 14:34:49,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7265 conditions, 987 events. 515/987 cut-off events. For 104649/104649 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5452 event pairs, 35 based on Foata normal form. 1/986 useless extension candidates. Maximal degree in co-relation 7128. Up to 714 conditions per place. [2024-06-04 14:34:49,689 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 192 selfloop transitions, 74 changer transitions 0/269 dead transitions. [2024-06-04 14:34:49,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 269 transitions, 3484 flow [2024-06-04 14:34:49,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:34:49,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:34:49,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 14:34:49,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 14:34:49,690 INFO L175 Difference]: Start difference. First operand has 286 places, 254 transitions, 2724 flow. Second operand 11 states and 143 transitions. [2024-06-04 14:34:49,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 269 transitions, 3484 flow [2024-06-04 14:34:50,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 269 transitions, 3334 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:50,005 INFO L231 Difference]: Finished difference. Result has 289 places, 254 transitions, 2727 flow [2024-06-04 14:34:50,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2574, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2727, PETRI_PLACES=289, PETRI_TRANSITIONS=254} [2024-06-04 14:34:50,006 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-04 14:34:50,006 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 254 transitions, 2727 flow [2024-06-04 14:34:50,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:50,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:50,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:50,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 14:34:50,007 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)] === [2024-06-04 14:34:50,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:50,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1948309102, now seen corresponding path program 4 times [2024-06-04 14:34:50,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:50,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95006444] [2024-06-04 14:34:50,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:50,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:51,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:51,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95006444] [2024-06-04 14:34:51,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95006444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:51,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:51,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:51,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407123485] [2024-06-04 14:34:51,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:51,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:51,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:51,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:51,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:51,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:51,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 254 transitions, 2727 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:51,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:51,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:51,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:51,681 INFO L124 PetriNetUnfolderBase]: 522/1000 cut-off events. [2024-06-04 14:34:51,681 INFO L125 PetriNetUnfolderBase]: For 111042/111042 co-relation queries the response was YES. [2024-06-04 14:34:51,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7355 conditions, 1000 events. 522/1000 cut-off events. For 111042/111042 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5565 event pairs, 37 based on Foata normal form. 2/1000 useless extension candidates. Maximal degree in co-relation 7217. Up to 826 conditions per place. [2024-06-04 14:34:51,692 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 224 selfloop transitions, 44 changer transitions 0/271 dead transitions. [2024-06-04 14:34:51,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 271 transitions, 3343 flow [2024-06-04 14:34:51,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:34:51,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:34:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 14:34:51,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 14:34:51,693 INFO L175 Difference]: Start difference. First operand has 289 places, 254 transitions, 2727 flow. Second operand 11 states and 134 transitions. [2024-06-04 14:34:51,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 271 transitions, 3343 flow [2024-06-04 14:34:52,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 271 transitions, 3158 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:34:52,026 INFO L231 Difference]: Finished difference. Result has 290 places, 257 transitions, 2689 flow [2024-06-04 14:34:52,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2546, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2689, PETRI_PLACES=290, PETRI_TRANSITIONS=257} [2024-06-04 14:34:52,027 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-04 14:34:52,027 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 257 transitions, 2689 flow [2024-06-04 14:34:52,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:52,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:52,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:52,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 14:34:52,028 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)] === [2024-06-04 14:34:52,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:52,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1948577872, now seen corresponding path program 5 times [2024-06-04 14:34:52,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:52,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183556726] [2024-06-04 14:34:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:52,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:53,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:53,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183556726] [2024-06-04 14:34:53,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183556726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:53,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:53,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:53,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201913456] [2024-06-04 14:34:53,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:53,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:53,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:53,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:53,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:53,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:53,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 257 transitions, 2689 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:53,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:53,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:53,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:53,783 INFO L124 PetriNetUnfolderBase]: 533/1021 cut-off events. [2024-06-04 14:34:53,783 INFO L125 PetriNetUnfolderBase]: For 122924/122924 co-relation queries the response was YES. [2024-06-04 14:34:53,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7670 conditions, 1021 events. 533/1021 cut-off events. For 122924/122924 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5712 event pairs, 38 based on Foata normal form. 2/1021 useless extension candidates. Maximal degree in co-relation 7530. Up to 791 conditions per place. [2024-06-04 14:34:53,794 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 214 selfloop transitions, 58 changer transitions 0/275 dead transitions. [2024-06-04 14:34:53,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 275 transitions, 3517 flow [2024-06-04 14:34:53,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:34:53,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:34:53,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 14:34:53,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 14:34:53,796 INFO L175 Difference]: Start difference. First operand has 290 places, 257 transitions, 2689 flow. Second operand 11 states and 137 transitions. [2024-06-04 14:34:53,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 275 transitions, 3517 flow [2024-06-04 14:34:54,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 275 transitions, 3410 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:54,136 INFO L231 Difference]: Finished difference. Result has 293 places, 259 transitions, 2756 flow [2024-06-04 14:34:54,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2582, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2756, PETRI_PLACES=293, PETRI_TRANSITIONS=259} [2024-06-04 14:34:54,137 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-04 14:34:54,137 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 259 transitions, 2756 flow [2024-06-04 14:34:54,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:54,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:54,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:54,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 14:34:54,137 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)] === [2024-06-04 14:34:54,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:54,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1948568572, now seen corresponding path program 6 times [2024-06-04 14:34:54,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:54,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613246933] [2024-06-04 14:34:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:54,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:55,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:55,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613246933] [2024-06-04 14:34:55,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613246933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:55,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:55,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:55,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048734112] [2024-06-04 14:34:55,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:55,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:55,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:55,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:55,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:55,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:55,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 259 transitions, 2756 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:55,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:55,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:55,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:55,770 INFO L124 PetriNetUnfolderBase]: 530/1016 cut-off events. [2024-06-04 14:34:55,770 INFO L125 PetriNetUnfolderBase]: For 115672/115672 co-relation queries the response was YES. [2024-06-04 14:34:55,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7472 conditions, 1016 events. 530/1016 cut-off events. For 115672/115672 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5687 event pairs, 39 based on Foata normal form. 2/1016 useless extension candidates. Maximal degree in co-relation 7331. Up to 821 conditions per place. [2024-06-04 14:34:55,782 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 219 selfloop transitions, 50 changer transitions 0/272 dead transitions. [2024-06-04 14:34:55,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 272 transitions, 3326 flow [2024-06-04 14:34:55,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:34:55,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:34:55,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-04 14:34:55,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-04 14:34:55,783 INFO L175 Difference]: Start difference. First operand has 293 places, 259 transitions, 2756 flow. Second operand 10 states and 126 transitions. [2024-06-04 14:34:55,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 272 transitions, 3326 flow [2024-06-04 14:34:56,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 272 transitions, 3207 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 14:34:56,113 INFO L231 Difference]: Finished difference. Result has 295 places, 259 transitions, 2743 flow [2024-06-04 14:34:56,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2637, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2743, PETRI_PLACES=295, PETRI_TRANSITIONS=259} [2024-06-04 14:34:56,114 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-04 14:34:56,114 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 259 transitions, 2743 flow [2024-06-04 14:34:56,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:56,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:56,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:56,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 14:34:56,115 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)] === [2024-06-04 14:34:56,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:56,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1948301383, now seen corresponding path program 7 times [2024-06-04 14:34:56,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:56,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723159680] [2024-06-04 14:34:56,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:56,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:57,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:57,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:57,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723159680] [2024-06-04 14:34:57,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723159680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:57,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:57,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:34:57,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398871518] [2024-06-04 14:34:57,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:57,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:34:57,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:57,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:34:57,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:34:57,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:57,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 259 transitions, 2743 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:57,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:57,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:57,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:34:58,002 INFO L124 PetriNetUnfolderBase]: 528/1013 cut-off events. [2024-06-04 14:34:58,002 INFO L125 PetriNetUnfolderBase]: For 107618/107618 co-relation queries the response was YES. [2024-06-04 14:34:58,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7335 conditions, 1013 events. 528/1013 cut-off events. For 107618/107618 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5673 event pairs, 39 based on Foata normal form. 1/1012 useless extension candidates. Maximal degree in co-relation 7194. Up to 815 conditions per place. [2024-06-04 14:34:58,013 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 212 selfloop transitions, 57 changer transitions 0/272 dead transitions. [2024-06-04 14:34:58,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 272 transitions, 3313 flow [2024-06-04 14:34:58,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:34:58,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:34:58,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:34:58,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 14:34:58,014 INFO L175 Difference]: Start difference. First operand has 295 places, 259 transitions, 2743 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:34:58,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 272 transitions, 3313 flow [2024-06-04 14:34:58,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 272 transitions, 3157 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-04 14:34:58,316 INFO L231 Difference]: Finished difference. Result has 297 places, 259 transitions, 2706 flow [2024-06-04 14:34:58,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2587, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2706, PETRI_PLACES=297, PETRI_TRANSITIONS=259} [2024-06-04 14:34:58,316 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-04 14:34:58,316 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 259 transitions, 2706 flow [2024-06-04 14:34:58,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:58,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:34:58,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:34:58,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 14:34:58,317 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)] === [2024-06-04 14:34:58,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:34:58,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1249595203, now seen corresponding path program 11 times [2024-06-04 14:34:58,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:34:58,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221821945] [2024-06-04 14:34:58,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:34:58,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:34:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:34:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:34:59,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:34:59,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221821945] [2024-06-04 14:34:59,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221821945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:34:59,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:34:59,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:34:59,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074051481] [2024-06-04 14:34:59,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:34:59,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:34:59,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:34:59,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:34:59,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:34:59,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:34:59,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 259 transitions, 2706 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:34:59,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:34:59,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:34:59,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:00,126 INFO L124 PetriNetUnfolderBase]: 532/1022 cut-off events. [2024-06-04 14:35:00,126 INFO L125 PetriNetUnfolderBase]: For 115417/115420 co-relation queries the response was YES. [2024-06-04 14:35:00,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7417 conditions, 1022 events. 532/1022 cut-off events. For 115417/115420 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5728 event pairs, 45 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 7275. Up to 814 conditions per place. [2024-06-04 14:35:00,137 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 213 selfloop transitions, 55 changer transitions 0/271 dead transitions. [2024-06-04 14:35:00,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 271 transitions, 3316 flow [2024-06-04 14:35:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:00,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:00,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 14:35:00,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 14:35:00,138 INFO L175 Difference]: Start difference. First operand has 297 places, 259 transitions, 2706 flow. Second operand 10 states and 123 transitions. [2024-06-04 14:35:00,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 271 transitions, 3316 flow [2024-06-04 14:35:00,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 271 transitions, 3220 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:00,468 INFO L231 Difference]: Finished difference. Result has 299 places, 260 transitions, 2774 flow [2024-06-04 14:35:00,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2610, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2774, PETRI_PLACES=299, PETRI_TRANSITIONS=260} [2024-06-04 14:35:00,469 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-04 14:35:00,469 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 260 transitions, 2774 flow [2024-06-04 14:35:00,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:00,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:00,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:00,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 14:35:00,470 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)] === [2024-06-04 14:35:00,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:00,470 INFO L85 PathProgramCache]: Analyzing trace with hash -434259035, now seen corresponding path program 12 times [2024-06-04 14:35:00,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:00,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368308683] [2024-06-04 14:35:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:00,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:01,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:01,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368308683] [2024-06-04 14:35:01,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368308683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:01,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:01,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:01,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254684411] [2024-06-04 14:35:01,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:01,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:01,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:01,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:01,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:01,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:01,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 260 transitions, 2774 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:01,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:01,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:01,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:02,159 INFO L124 PetriNetUnfolderBase]: 536/1030 cut-off events. [2024-06-04 14:35:02,159 INFO L125 PetriNetUnfolderBase]: For 118944/118947 co-relation queries the response was YES. [2024-06-04 14:35:02,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7567 conditions, 1030 events. 536/1030 cut-off events. For 118944/118947 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5789 event pairs, 43 based on Foata normal form. 2/1027 useless extension candidates. Maximal degree in co-relation 7424. Up to 865 conditions per place. [2024-06-04 14:35:02,170 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 231 selfloop transitions, 38 changer transitions 0/272 dead transitions. [2024-06-04 14:35:02,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 272 transitions, 3388 flow [2024-06-04 14:35:02,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:02,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:02,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 14:35:02,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 14:35:02,171 INFO L175 Difference]: Start difference. First operand has 299 places, 260 transitions, 2774 flow. Second operand 10 states and 124 transitions. [2024-06-04 14:35:02,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 272 transitions, 3388 flow [2024-06-04 14:35:02,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 272 transitions, 3234 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:02,508 INFO L231 Difference]: Finished difference. Result has 301 places, 261 transitions, 2752 flow [2024-06-04 14:35:02,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2620, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2752, PETRI_PLACES=301, PETRI_TRANSITIONS=261} [2024-06-04 14:35:02,509 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-04 14:35:02,509 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 261 transitions, 2752 flow [2024-06-04 14:35:02,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:02,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:02,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:02,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 14:35:02,509 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)] === [2024-06-04 14:35:02,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:02,515 INFO L85 PathProgramCache]: Analyzing trace with hash -633560825, now seen corresponding path program 13 times [2024-06-04 14:35:02,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:02,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855518886] [2024-06-04 14:35:02,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:02,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:03,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:03,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855518886] [2024-06-04 14:35:03,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855518886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:03,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:03,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:03,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145733546] [2024-06-04 14:35:03,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:03,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:03,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:03,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:03,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:03,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:03,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 261 transitions, 2752 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:03,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:03,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:03,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:04,262 INFO L124 PetriNetUnfolderBase]: 540/1038 cut-off events. [2024-06-04 14:35:04,263 INFO L125 PetriNetUnfolderBase]: For 121104/121107 co-relation queries the response was YES. [2024-06-04 14:35:04,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7590 conditions, 1038 events. 540/1038 cut-off events. For 121104/121107 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5853 event pairs, 47 based on Foata normal form. 2/1035 useless extension candidates. Maximal degree in co-relation 7446. Up to 888 conditions per place. [2024-06-04 14:35:04,274 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 239 selfloop transitions, 32 changer transitions 0/274 dead transitions. [2024-06-04 14:35:04,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 274 transitions, 3385 flow [2024-06-04 14:35:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:04,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 14:35:04,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:35:04,275 INFO L175 Difference]: Start difference. First operand has 301 places, 261 transitions, 2752 flow. Second operand 10 states and 120 transitions. [2024-06-04 14:35:04,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 274 transitions, 3385 flow [2024-06-04 14:35:04,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 274 transitions, 3261 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:04,610 INFO L231 Difference]: Finished difference. Result has 304 places, 263 transitions, 2768 flow [2024-06-04 14:35:04,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2630, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2768, PETRI_PLACES=304, PETRI_TRANSITIONS=263} [2024-06-04 14:35:04,610 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-04 14:35:04,611 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 263 transitions, 2768 flow [2024-06-04 14:35:04,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:04,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:04,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:04,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 14:35:04,611 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)] === [2024-06-04 14:35:04,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:04,611 INFO L85 PathProgramCache]: Analyzing trace with hash -633708695, now seen corresponding path program 14 times [2024-06-04 14:35:04,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:04,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789013180] [2024-06-04 14:35:04,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:04,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:05,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:05,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:05,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789013180] [2024-06-04 14:35:05,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789013180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:05,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:05,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:05,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308623728] [2024-06-04 14:35:05,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:05,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:05,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:05,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:05,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:05,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:05,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 263 transitions, 2768 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:05,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:05,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:05,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:06,321 INFO L124 PetriNetUnfolderBase]: 544/1046 cut-off events. [2024-06-04 14:35:06,322 INFO L125 PetriNetUnfolderBase]: For 123745/123748 co-relation queries the response was YES. [2024-06-04 14:35:06,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7640 conditions, 1046 events. 544/1046 cut-off events. For 123745/123748 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5910 event pairs, 43 based on Foata normal form. 2/1043 useless extension candidates. Maximal degree in co-relation 7494. Up to 891 conditions per place. [2024-06-04 14:35:06,333 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 242 selfloop transitions, 31 changer transitions 0/276 dead transitions. [2024-06-04 14:35:06,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 276 transitions, 3396 flow [2024-06-04 14:35:06,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:06,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:06,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 14:35:06,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:35:06,334 INFO L175 Difference]: Start difference. First operand has 304 places, 263 transitions, 2768 flow. Second operand 10 states and 120 transitions. [2024-06-04 14:35:06,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 276 transitions, 3396 flow [2024-06-04 14:35:06,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 276 transitions, 3287 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-04 14:35:06,701 INFO L231 Difference]: Finished difference. Result has 307 places, 264 transitions, 2781 flow [2024-06-04 14:35:06,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2659, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2781, PETRI_PLACES=307, PETRI_TRANSITIONS=264} [2024-06-04 14:35:06,702 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-04 14:35:06,702 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 264 transitions, 2781 flow [2024-06-04 14:35:06,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:06,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:06,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:06,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 14:35:06,702 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)] === [2024-06-04 14:35:06,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:06,703 INFO L85 PathProgramCache]: Analyzing trace with hash -628198445, now seen corresponding path program 15 times [2024-06-04 14:35:06,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:06,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681259832] [2024-06-04 14:35:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:06,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:07,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:07,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681259832] [2024-06-04 14:35:07,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681259832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:07,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:07,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:07,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630744623] [2024-06-04 14:35:07,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:07,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:07,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:07,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:07,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:07,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:07,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 264 transitions, 2781 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:07,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:07,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:07,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:08,417 INFO L124 PetriNetUnfolderBase]: 541/1041 cut-off events. [2024-06-04 14:35:08,417 INFO L125 PetriNetUnfolderBase]: For 114046/114049 co-relation queries the response was YES. [2024-06-04 14:35:08,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7303 conditions, 1041 events. 541/1041 cut-off events. For 114046/114049 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5887 event pairs, 46 based on Foata normal form. 2/1038 useless extension candidates. Maximal degree in co-relation 7156. Up to 885 conditions per place. [2024-06-04 14:35:08,427 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 237 selfloop transitions, 35 changer transitions 0/275 dead transitions. [2024-06-04 14:35:08,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 275 transitions, 3351 flow [2024-06-04 14:35:08,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:08,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 14:35:08,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-04 14:35:08,428 INFO L175 Difference]: Start difference. First operand has 307 places, 264 transitions, 2781 flow. Second operand 10 states and 122 transitions. [2024-06-04 14:35:08,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 275 transitions, 3351 flow [2024-06-04 14:35:08,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 275 transitions, 3239 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:08,769 INFO L231 Difference]: Finished difference. Result has 309 places, 264 transitions, 2743 flow [2024-06-04 14:35:08,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2669, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2743, PETRI_PLACES=309, PETRI_TRANSITIONS=264} [2024-06-04 14:35:08,769 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-04 14:35:08,769 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 264 transitions, 2743 flow [2024-06-04 14:35:08,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:08,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:08,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:08,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 14:35:08,770 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)] === [2024-06-04 14:35:08,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:08,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1505390672, now seen corresponding path program 7 times [2024-06-04 14:35:08,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:08,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525293139] [2024-06-04 14:35:08,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:08,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:09,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:09,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525293139] [2024-06-04 14:35:09,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525293139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:09,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:09,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:09,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326765890] [2024-06-04 14:35:09,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:09,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:09,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:09,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:09,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:10,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:10,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 264 transitions, 2743 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:10,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:10,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:10,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:10,449 INFO L124 PetriNetUnfolderBase]: 552/1061 cut-off events. [2024-06-04 14:35:10,449 INFO L125 PetriNetUnfolderBase]: For 126428/126428 co-relation queries the response was YES. [2024-06-04 14:35:10,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7613 conditions, 1061 events. 552/1061 cut-off events. For 126428/126428 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6032 event pairs, 43 based on Foata normal form. 2/1061 useless extension candidates. Maximal degree in co-relation 7465. Up to 921 conditions per place. [2024-06-04 14:35:10,461 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 19 changer transitions 0/280 dead transitions. [2024-06-04 14:35:10,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 280 transitions, 3633 flow [2024-06-04 14:35:10,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:10,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 14:35:10,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:35:10,462 INFO L175 Difference]: Start difference. First operand has 309 places, 264 transitions, 2743 flow. Second operand 10 states and 120 transitions. [2024-06-04 14:35:10,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 280 transitions, 3633 flow [2024-06-04 14:35:10,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 280 transitions, 3433 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-04 14:35:10,818 INFO L231 Difference]: Finished difference. Result has 309 places, 266 transitions, 2644 flow [2024-06-04 14:35:10,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2644, PETRI_PLACES=309, PETRI_TRANSITIONS=266} [2024-06-04 14:35:10,819 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-04 14:35:10,819 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 266 transitions, 2644 flow [2024-06-04 14:35:10,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:10,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:10,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:10,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 14:35:10,819 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)] === [2024-06-04 14:35:10,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:10,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1505381372, now seen corresponding path program 8 times [2024-06-04 14:35:10,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:10,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581922822] [2024-06-04 14:35:10,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:10,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:12,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:12,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:12,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581922822] [2024-06-04 14:35:12,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581922822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:12,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:12,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:12,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977696770] [2024-06-04 14:35:12,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:12,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:12,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:12,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:12,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:12,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:12,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 266 transitions, 2644 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:12,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:12,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:12,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:12,922 INFO L124 PetriNetUnfolderBase]: 562/1079 cut-off events. [2024-06-04 14:35:12,923 INFO L125 PetriNetUnfolderBase]: For 127663/127663 co-relation queries the response was YES. [2024-06-04 14:35:12,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7538 conditions, 1079 events. 562/1079 cut-off events. For 127663/127663 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6112 event pairs, 45 based on Foata normal form. 2/1079 useless extension candidates. Maximal degree in co-relation 7390. Up to 973 conditions per place. [2024-06-04 14:35:12,934 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 262 selfloop transitions, 20 changer transitions 0/285 dead transitions. [2024-06-04 14:35:12,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 285 transitions, 3368 flow [2024-06-04 14:35:12,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:12,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:12,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:35:12,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 14:35:12,935 INFO L175 Difference]: Start difference. First operand has 309 places, 266 transitions, 2644 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:35:12,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 285 transitions, 3368 flow [2024-06-04 14:35:13,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 285 transitions, 3281 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-04 14:35:13,327 INFO L231 Difference]: Finished difference. Result has 314 places, 273 transitions, 2745 flow [2024-06-04 14:35:13,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2566, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2745, PETRI_PLACES=314, PETRI_TRANSITIONS=273} [2024-06-04 14:35:13,327 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-04 14:35:13,327 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 273 transitions, 2745 flow [2024-06-04 14:35:13,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:13,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:13,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:13,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 14:35:13,328 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)] === [2024-06-04 14:35:13,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:13,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1505114183, now seen corresponding path program 8 times [2024-06-04 14:35:13,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:13,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275975826] [2024-06-04 14:35:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:13,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:14,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:14,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:14,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275975826] [2024-06-04 14:35:14,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275975826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:14,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:14,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:14,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410485080] [2024-06-04 14:35:14,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:14,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:14,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:14,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:14,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:15,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:15,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 273 transitions, 2745 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:15,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:15,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:15,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:15,540 INFO L124 PetriNetUnfolderBase]: 560/1076 cut-off events. [2024-06-04 14:35:15,540 INFO L125 PetriNetUnfolderBase]: For 118184/118184 co-relation queries the response was YES. [2024-06-04 14:35:15,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7349 conditions, 1076 events. 560/1076 cut-off events. For 118184/118184 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6099 event pairs, 45 based on Foata normal form. 1/1075 useless extension candidates. Maximal degree in co-relation 7199. Up to 979 conditions per place. [2024-06-04 14:35:15,552 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 264 selfloop transitions, 18 changer transitions 0/285 dead transitions. [2024-06-04 14:35:15,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 285 transitions, 3341 flow [2024-06-04 14:35:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:15,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 14:35:15,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-04 14:35:15,553 INFO L175 Difference]: Start difference. First operand has 314 places, 273 transitions, 2745 flow. Second operand 11 states and 125 transitions. [2024-06-04 14:35:15,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 285 transitions, 3341 flow [2024-06-04 14:35:15,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 285 transitions, 3225 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-04 14:35:15,914 INFO L231 Difference]: Finished difference. Result has 321 places, 274 transitions, 2681 flow [2024-06-04 14:35:15,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2681, PETRI_PLACES=321, PETRI_TRANSITIONS=274} [2024-06-04 14:35:15,915 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-04 14:35:15,915 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 274 transitions, 2681 flow [2024-06-04 14:35:15,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:15,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:15,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:15,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 14:35:15,916 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)] === [2024-06-04 14:35:15,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:15,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1505121902, now seen corresponding path program 9 times [2024-06-04 14:35:15,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:15,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823568473] [2024-06-04 14:35:15,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:15,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:17,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:17,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823568473] [2024-06-04 14:35:17,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823568473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:17,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:17,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:17,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046817491] [2024-06-04 14:35:17,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:17,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:17,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:17,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:17,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:17,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:17,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 274 transitions, 2681 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:17,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:17,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:17,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:17,455 INFO L124 PetriNetUnfolderBase]: 557/1071 cut-off events. [2024-06-04 14:35:17,455 INFO L125 PetriNetUnfolderBase]: For 113598/113598 co-relation queries the response was YES. [2024-06-04 14:35:17,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7034 conditions, 1071 events. 557/1071 cut-off events. For 113598/113598 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6087 event pairs, 42 based on Foata normal form. 2/1071 useless extension candidates. Maximal degree in co-relation 6881. Up to 948 conditions per place. [2024-06-04 14:35:17,468 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 257 selfloop transitions, 25 changer transitions 0/285 dead transitions. [2024-06-04 14:35:17,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 285 transitions, 3271 flow [2024-06-04 14:35:17,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:17,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:17,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 14:35:17,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-04 14:35:17,469 INFO L175 Difference]: Start difference. First operand has 321 places, 274 transitions, 2681 flow. Second operand 10 states and 118 transitions. [2024-06-04 14:35:17,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 285 transitions, 3271 flow [2024-06-04 14:35:17,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 285 transitions, 3187 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 14:35:17,767 INFO L231 Difference]: Finished difference. Result has 322 places, 274 transitions, 2654 flow [2024-06-04 14:35:17,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2597, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2654, PETRI_PLACES=322, PETRI_TRANSITIONS=274} [2024-06-04 14:35:17,768 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-04 14:35:17,768 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 274 transitions, 2654 flow [2024-06-04 14:35:17,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:17,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:17,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:17,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 14:35:17,769 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)] === [2024-06-04 14:35:17,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:17,769 INFO L85 PathProgramCache]: Analyzing trace with hash -434051273, now seen corresponding path program 9 times [2024-06-04 14:35:17,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:17,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628980404] [2024-06-04 14:35:17,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:17,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:19,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:19,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628980404] [2024-06-04 14:35:19,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628980404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:19,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:19,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:19,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460825611] [2024-06-04 14:35:19,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:19,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:19,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:19,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:19,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:19,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:19,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 274 transitions, 2654 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:19,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:19,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:19,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:19,596 INFO L124 PetriNetUnfolderBase]: 560/1077 cut-off events. [2024-06-04 14:35:19,596 INFO L125 PetriNetUnfolderBase]: For 109548/109551 co-relation queries the response was YES. [2024-06-04 14:35:19,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7071 conditions, 1077 events. 560/1077 cut-off events. For 109548/109551 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6145 event pairs, 48 based on Foata normal form. 1/1073 useless extension candidates. Maximal degree in co-relation 6917. Up to 885 conditions per place. [2024-06-04 14:35:19,608 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 235 selfloop transitions, 52 changer transitions 0/290 dead transitions. [2024-06-04 14:35:19,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 290 transitions, 3325 flow [2024-06-04 14:35:19,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:19,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 14:35:19,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 14:35:19,609 INFO L175 Difference]: Start difference. First operand has 322 places, 274 transitions, 2654 flow. Second operand 11 states and 138 transitions. [2024-06-04 14:35:19,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 290 transitions, 3325 flow [2024-06-04 14:35:19,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 290 transitions, 3269 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 14:35:19,972 INFO L231 Difference]: Finished difference. Result has 327 places, 279 transitions, 2813 flow [2024-06-04 14:35:19,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2598, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2813, PETRI_PLACES=327, PETRI_TRANSITIONS=279} [2024-06-04 14:35:19,973 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-04 14:35:19,973 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 279 transitions, 2813 flow [2024-06-04 14:35:19,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:19,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:19,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:19,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 14:35:19,974 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)] === [2024-06-04 14:35:19,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:19,974 INFO L85 PathProgramCache]: Analyzing trace with hash -195253272, now seen corresponding path program 10 times [2024-06-04 14:35:19,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:19,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322966733] [2024-06-04 14:35:19,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:19,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:21,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:21,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:21,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322966733] [2024-06-04 14:35:21,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322966733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:21,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:21,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:21,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007515181] [2024-06-04 14:35:21,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:21,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:21,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:21,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:21,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:21,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:21,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 279 transitions, 2813 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:21,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:21,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:21,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:22,292 INFO L124 PetriNetUnfolderBase]: 564/1084 cut-off events. [2024-06-04 14:35:22,292 INFO L125 PetriNetUnfolderBase]: For 116089/116089 co-relation queries the response was YES. [2024-06-04 14:35:22,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7252 conditions, 1084 events. 564/1084 cut-off events. For 116089/116089 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6167 event pairs, 40 based on Foata normal form. 2/1084 useless extension candidates. Maximal degree in co-relation 7094. Up to 915 conditions per place. [2024-06-04 14:35:22,304 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 264 selfloop transitions, 28 changer transitions 0/295 dead transitions. [2024-06-04 14:35:22,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 295 transitions, 3461 flow [2024-06-04 14:35:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:35:22,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:35:22,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-04 14:35:22,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-04 14:35:22,305 INFO L175 Difference]: Start difference. First operand has 327 places, 279 transitions, 2813 flow. Second operand 12 states and 139 transitions. [2024-06-04 14:35:22,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 295 transitions, 3461 flow [2024-06-04 14:35:22,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 295 transitions, 3343 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-04 14:35:22,711 INFO L231 Difference]: Finished difference. Result has 334 places, 280 transitions, 2787 flow [2024-06-04 14:35:22,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2695, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2787, PETRI_PLACES=334, PETRI_TRANSITIONS=280} [2024-06-04 14:35:22,711 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-04 14:35:22,711 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 280 transitions, 2787 flow [2024-06-04 14:35:22,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:22,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:22,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:22,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 14:35:22,712 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)] === [2024-06-04 14:35:22,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:22,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1637285718, now seen corresponding path program 11 times [2024-06-04 14:35:22,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:22,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604306948] [2024-06-04 14:35:22,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:22,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:23,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:23,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:23,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604306948] [2024-06-04 14:35:23,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604306948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:23,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:23,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:23,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093139381] [2024-06-04 14:35:23,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:23,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:23,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:23,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:23,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:24,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:24,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 280 transitions, 2787 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:24,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:24,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:24,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:24,498 INFO L124 PetriNetUnfolderBase]: 568/1093 cut-off events. [2024-06-04 14:35:24,498 INFO L125 PetriNetUnfolderBase]: For 118386/118389 co-relation queries the response was YES. [2024-06-04 14:35:24,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7287 conditions, 1093 events. 568/1093 cut-off events. For 118386/118389 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6243 event pairs, 48 based on Foata normal form. 2/1090 useless extension candidates. Maximal degree in co-relation 7128. Up to 916 conditions per place. [2024-06-04 14:35:24,511 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 246 selfloop transitions, 44 changer transitions 0/293 dead transitions. [2024-06-04 14:35:24,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 293 transitions, 3427 flow [2024-06-04 14:35:24,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:24,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 14:35:24,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 14:35:24,512 INFO L175 Difference]: Start difference. First operand has 334 places, 280 transitions, 2787 flow. Second operand 11 states and 136 transitions. [2024-06-04 14:35:24,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 293 transitions, 3427 flow [2024-06-04 14:35:24,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 293 transitions, 3357 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 14:35:24,908 INFO L231 Difference]: Finished difference. Result has 336 places, 281 transitions, 2843 flow [2024-06-04 14:35:24,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2717, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2843, PETRI_PLACES=336, PETRI_TRANSITIONS=281} [2024-06-04 14:35:24,909 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-04 14:35:24,909 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 281 transitions, 2843 flow [2024-06-04 14:35:24,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:24,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:24,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:24,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 14:35:24,909 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)] === [2024-06-04 14:35:24,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:24,910 INFO L85 PathProgramCache]: Analyzing trace with hash -81660353, now seen corresponding path program 10 times [2024-06-04 14:35:24,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:24,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484495199] [2024-06-04 14:35:24,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:24,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:26,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:26,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484495199] [2024-06-04 14:35:26,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484495199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:26,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:26,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:26,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407497604] [2024-06-04 14:35:26,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:26,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:26,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:26,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:26,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:26,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:26,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 281 transitions, 2843 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:26,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:26,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:26,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:26,706 INFO L124 PetriNetUnfolderBase]: 571/1098 cut-off events. [2024-06-04 14:35:26,706 INFO L125 PetriNetUnfolderBase]: For 114615/114618 co-relation queries the response was YES. [2024-06-04 14:35:26,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7361 conditions, 1098 events. 571/1098 cut-off events. For 114615/114618 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6299 event pairs, 48 based on Foata normal form. 1/1094 useless extension candidates. Maximal degree in co-relation 7201. Up to 797 conditions per place. [2024-06-04 14:35:26,720 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 93 changer transitions 0/300 dead transitions. [2024-06-04 14:35:26,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 300 transitions, 3645 flow [2024-06-04 14:35:26,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:26,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:26,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 14:35:26,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 14:35:26,721 INFO L175 Difference]: Start difference. First operand has 336 places, 281 transitions, 2843 flow. Second operand 11 states and 138 transitions. [2024-06-04 14:35:26,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 300 transitions, 3645 flow [2024-06-04 14:35:27,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 300 transitions, 3501 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-04 14:35:27,077 INFO L231 Difference]: Finished difference. Result has 339 places, 288 transitions, 3093 flow [2024-06-04 14:35:27,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2699, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3093, PETRI_PLACES=339, PETRI_TRANSITIONS=288} [2024-06-04 14:35:27,077 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-04 14:35:27,077 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 288 transitions, 3093 flow [2024-06-04 14:35:27,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:27,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:27,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:27,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 14:35:27,078 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)] === [2024-06-04 14:35:27,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:27,078 INFO L85 PathProgramCache]: Analyzing trace with hash -628192493, now seen corresponding path program 11 times [2024-06-04 14:35:27,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:27,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881151335] [2024-06-04 14:35:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:27,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:28,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:28,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881151335] [2024-06-04 14:35:28,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881151335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:28,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:28,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:28,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255192339] [2024-06-04 14:35:28,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:28,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:28,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:28,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:28,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:28,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:28,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 288 transitions, 3093 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:28,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:28,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:28,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:29,216 INFO L124 PetriNetUnfolderBase]: 574/1103 cut-off events. [2024-06-04 14:35:29,216 INFO L125 PetriNetUnfolderBase]: For 116849/116852 co-relation queries the response was YES. [2024-06-04 14:35:29,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7503 conditions, 1103 events. 574/1103 cut-off events. For 116849/116852 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6314 event pairs, 48 based on Foata normal form. 1/1099 useless extension candidates. Maximal degree in co-relation 7340. Up to 938 conditions per place. [2024-06-04 14:35:29,230 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 257 selfloop transitions, 41 changer transitions 0/301 dead transitions. [2024-06-04 14:35:29,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 301 transitions, 3771 flow [2024-06-04 14:35:29,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:29,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:29,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 14:35:29,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 14:35:29,231 INFO L175 Difference]: Start difference. First operand has 339 places, 288 transitions, 3093 flow. Second operand 11 states and 134 transitions. [2024-06-04 14:35:29,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 301 transitions, 3771 flow [2024-06-04 14:35:29,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 301 transitions, 3513 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-04 14:35:29,647 INFO L231 Difference]: Finished difference. Result has 343 places, 290 transitions, 2982 flow [2024-06-04 14:35:29,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2835, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2982, PETRI_PLACES=343, PETRI_TRANSITIONS=290} [2024-06-04 14:35:29,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-04 14:35:29,648 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 290 transitions, 2982 flow [2024-06-04 14:35:29,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:29,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:29,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:29,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 14:35:29,648 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)] === [2024-06-04 14:35:29,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:29,649 INFO L85 PathProgramCache]: Analyzing trace with hash -627990683, now seen corresponding path program 12 times [2024-06-04 14:35:29,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:29,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847458884] [2024-06-04 14:35:29,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:29,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:31,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:31,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847458884] [2024-06-04 14:35:31,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847458884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:31,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:31,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:31,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394776629] [2024-06-04 14:35:31,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:31,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:31,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:31,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:31,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:32,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:32,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 290 transitions, 2982 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:32,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:32,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:32,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:32,505 INFO L124 PetriNetUnfolderBase]: 572/1100 cut-off events. [2024-06-04 14:35:32,506 INFO L125 PetriNetUnfolderBase]: For 110985/110988 co-relation queries the response was YES. [2024-06-04 14:35:32,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7217 conditions, 1100 events. 572/1100 cut-off events. For 110985/110988 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6318 event pairs, 48 based on Foata normal form. 1/1096 useless extension candidates. Maximal degree in co-relation 7054. Up to 935 conditions per place. [2024-06-04 14:35:32,518 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 256 selfloop transitions, 42 changer transitions 0/301 dead transitions. [2024-06-04 14:35:32,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 301 transitions, 3604 flow [2024-06-04 14:35:32,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:32,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:32,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 14:35:32,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 14:35:32,519 INFO L175 Difference]: Start difference. First operand has 343 places, 290 transitions, 2982 flow. Second operand 11 states and 133 transitions. [2024-06-04 14:35:32,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 301 transitions, 3604 flow [2024-06-04 14:35:32,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 301 transitions, 3411 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-04 14:35:32,898 INFO L231 Difference]: Finished difference. Result has 345 places, 290 transitions, 2878 flow [2024-06-04 14:35:32,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2789, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2878, PETRI_PLACES=345, PETRI_TRANSITIONS=290} [2024-06-04 14:35:32,899 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-04 14:35:32,899 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 290 transitions, 2878 flow [2024-06-04 14:35:32,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:32,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:32,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:32,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 14:35:32,899 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)] === [2024-06-04 14:35:32,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:32,900 INFO L85 PathProgramCache]: Analyzing trace with hash -81862163, now seen corresponding path program 13 times [2024-06-04 14:35:32,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:32,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938730937] [2024-06-04 14:35:32,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:32,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:34,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:34,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938730937] [2024-06-04 14:35:34,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938730937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:34,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:34,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:34,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582973836] [2024-06-04 14:35:34,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:34,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:34,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:34,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:34,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:34,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:34,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 290 transitions, 2878 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:34,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:34,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:34,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:35,250 INFO L124 PetriNetUnfolderBase]: 570/1097 cut-off events. [2024-06-04 14:35:35,250 INFO L125 PetriNetUnfolderBase]: For 105332/105335 co-relation queries the response was YES. [2024-06-04 14:35:35,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6980 conditions, 1097 events. 570/1097 cut-off events. For 105332/105335 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6288 event pairs, 48 based on Foata normal form. 1/1093 useless extension candidates. Maximal degree in co-relation 6816. Up to 796 conditions per place. [2024-06-04 14:35:35,263 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 95 changer transitions 0/302 dead transitions. [2024-06-04 14:35:35,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 302 transitions, 3514 flow [2024-06-04 14:35:35,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:35,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 14:35:35,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 14:35:35,264 INFO L175 Difference]: Start difference. First operand has 345 places, 290 transitions, 2878 flow. Second operand 11 states and 137 transitions. [2024-06-04 14:35:35,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 302 transitions, 3514 flow [2024-06-04 14:35:35,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 302 transitions, 3337 flow, removed 25 selfloop flow, removed 12 redundant places. [2024-06-04 14:35:35,672 INFO L231 Difference]: Finished difference. Result has 345 places, 291 transitions, 2920 flow [2024-06-04 14:35:35,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2920, PETRI_PLACES=345, PETRI_TRANSITIONS=291} [2024-06-04 14:35:35,673 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-04 14:35:35,673 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 291 transitions, 2920 flow [2024-06-04 14:35:35,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:35,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:35,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:35,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 14:35:35,674 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)] === [2024-06-04 14:35:35,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:35,674 INFO L85 PathProgramCache]: Analyzing trace with hash -627982964, now seen corresponding path program 12 times [2024-06-04 14:35:35,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:35,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190999932] [2024-06-04 14:35:35,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:35,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:36,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:36,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:36,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190999932] [2024-06-04 14:35:36,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190999932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:36,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:36,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:36,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456322778] [2024-06-04 14:35:36,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:36,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:36,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:36,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:36,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:36,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:36,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 291 transitions, 2920 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:36,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:36,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:36,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:37,196 INFO L124 PetriNetUnfolderBase]: 590/1141 cut-off events. [2024-06-04 14:35:37,196 INFO L125 PetriNetUnfolderBase]: For 178423/178426 co-relation queries the response was YES. [2024-06-04 14:35:37,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7372 conditions, 1141 events. 590/1141 cut-off events. For 178423/178426 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6585 event pairs, 52 based on Foata normal form. 12/1148 useless extension candidates. Maximal degree in co-relation 7207. Up to 934 conditions per place. [2024-06-04 14:35:37,210 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 262 selfloop transitions, 35 changer transitions 7/307 dead transitions. [2024-06-04 14:35:37,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 307 transitions, 3690 flow [2024-06-04 14:35:37,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:37,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-04 14:35:37,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 14:35:37,211 INFO L175 Difference]: Start difference. First operand has 345 places, 291 transitions, 2920 flow. Second operand 10 states and 128 transitions. [2024-06-04 14:35:37,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 307 transitions, 3690 flow [2024-06-04 14:35:37,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 307 transitions, 3464 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-04 14:35:37,646 INFO L231 Difference]: Finished difference. Result has 346 places, 289 transitions, 2783 flow [2024-06-04 14:35:37,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2694, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2783, PETRI_PLACES=346, PETRI_TRANSITIONS=289} [2024-06-04 14:35:37,646 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-04 14:35:37,646 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 289 transitions, 2783 flow [2024-06-04 14:35:37,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:37,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:37,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:37,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 14:35:37,647 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)] === [2024-06-04 14:35:37,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:37,647 INFO L85 PathProgramCache]: Analyzing trace with hash -426893714, now seen corresponding path program 13 times [2024-06-04 14:35:37,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:37,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834366000] [2024-06-04 14:35:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:37,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:38,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:38,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:38,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834366000] [2024-06-04 14:35:38,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834366000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:38,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:38,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:38,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142141763] [2024-06-04 14:35:38,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:38,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:38,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:38,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:38,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:39,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:39,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 289 transitions, 2783 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:39,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:39,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:39,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:39,378 INFO L124 PetriNetUnfolderBase]: 573/1106 cut-off events. [2024-06-04 14:35:39,378 INFO L125 PetriNetUnfolderBase]: For 116401/116404 co-relation queries the response was YES. [2024-06-04 14:35:39,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7038 conditions, 1106 events. 573/1106 cut-off events. For 116401/116404 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6378 event pairs, 48 based on Foata normal form. 2/1103 useless extension candidates. Maximal degree in co-relation 6872. Up to 932 conditions per place. [2024-06-04 14:35:39,390 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 257 selfloop transitions, 44 changer transitions 0/304 dead transitions. [2024-06-04 14:35:39,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 304 transitions, 3469 flow [2024-06-04 14:35:39,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:39,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:39,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:35:39,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 14:35:39,392 INFO L175 Difference]: Start difference. First operand has 346 places, 289 transitions, 2783 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:35:39,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 304 transitions, 3469 flow [2024-06-04 14:35:39,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 304 transitions, 3367 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:39,794 INFO L231 Difference]: Finished difference. Result has 350 places, 292 transitions, 2838 flow [2024-06-04 14:35:39,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2681, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2838, PETRI_PLACES=350, PETRI_TRANSITIONS=292} [2024-06-04 14:35:39,795 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-04 14:35:39,795 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 292 transitions, 2838 flow [2024-06-04 14:35:39,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:39,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:39,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:39,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 14:35:39,796 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)] === [2024-06-04 14:35:39,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:39,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2141985390, now seen corresponding path program 14 times [2024-06-04 14:35:39,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:39,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674053999] [2024-06-04 14:35:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:39,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:41,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:41,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674053999] [2024-06-04 14:35:41,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674053999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:41,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:41,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:41,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322765101] [2024-06-04 14:35:41,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:41,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:41,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:41,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:41,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:41,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:41,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 292 transitions, 2838 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:41,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:41,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:41,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:41,605 INFO L124 PetriNetUnfolderBase]: 577/1114 cut-off events. [2024-06-04 14:35:41,605 INFO L125 PetriNetUnfolderBase]: For 118421/118424 co-relation queries the response was YES. [2024-06-04 14:35:41,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7115 conditions, 1114 events. 577/1114 cut-off events. For 118421/118424 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6452 event pairs, 50 based on Foata normal form. 2/1111 useless extension candidates. Maximal degree in co-relation 6947. Up to 876 conditions per place. [2024-06-04 14:35:41,615 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 233 selfloop transitions, 69 changer transitions 0/305 dead transitions. [2024-06-04 14:35:41,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 305 transitions, 3508 flow [2024-06-04 14:35:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 14:35:41,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 14:35:41,616 INFO L175 Difference]: Start difference. First operand has 350 places, 292 transitions, 2838 flow. Second operand 11 states and 136 transitions. [2024-06-04 14:35:41,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 305 transitions, 3508 flow [2024-06-04 14:35:41,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 305 transitions, 3389 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:41,989 INFO L231 Difference]: Finished difference. Result has 353 places, 293 transitions, 2901 flow [2024-06-04 14:35:41,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2719, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2901, PETRI_PLACES=353, PETRI_TRANSITIONS=293} [2024-06-04 14:35:41,989 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-04 14:35:41,989 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 293 transitions, 2901 flow [2024-06-04 14:35:41,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:41,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:41,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:41,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 14:35:41,990 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)] === [2024-06-04 14:35:41,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:41,990 INFO L85 PathProgramCache]: Analyzing trace with hash -74234024, now seen corresponding path program 15 times [2024-06-04 14:35:41,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:41,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600353632] [2024-06-04 14:35:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:41,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:43,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:43,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600353632] [2024-06-04 14:35:43,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600353632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:43,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:43,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:43,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221301591] [2024-06-04 14:35:43,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:43,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:43,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:43,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:43,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:43,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:43,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 293 transitions, 2901 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:43,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:43,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:43,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:44,403 INFO L124 PetriNetUnfolderBase]: 588/1135 cut-off events. [2024-06-04 14:35:44,404 INFO L125 PetriNetUnfolderBase]: For 135348/135351 co-relation queries the response was YES. [2024-06-04 14:35:44,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7593 conditions, 1135 events. 588/1135 cut-off events. For 135348/135351 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6615 event pairs, 49 based on Foata normal form. 2/1132 useless extension candidates. Maximal degree in co-relation 7424. Up to 866 conditions per place. [2024-06-04 14:35:44,417 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 233 selfloop transitions, 73 changer transitions 0/309 dead transitions. [2024-06-04 14:35:44,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 309 transitions, 3861 flow [2024-06-04 14:35:44,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:44,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:44,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 14:35:44,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-04 14:35:44,419 INFO L175 Difference]: Start difference. First operand has 353 places, 293 transitions, 2901 flow. Second operand 11 states and 140 transitions. [2024-06-04 14:35:44,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 309 transitions, 3861 flow [2024-06-04 14:35:44,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 309 transitions, 3676 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-04 14:35:44,847 INFO L231 Difference]: Finished difference. Result has 354 places, 295 transitions, 2948 flow [2024-06-04 14:35:44,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2948, PETRI_PLACES=354, PETRI_TRANSITIONS=295} [2024-06-04 14:35:44,847 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-04 14:35:44,848 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 295 transitions, 2948 flow [2024-06-04 14:35:44,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:44,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:44,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:44,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 14:35:44,849 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)] === [2024-06-04 14:35:44,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:44,850 INFO L85 PathProgramCache]: Analyzing trace with hash -2145572596, now seen corresponding path program 16 times [2024-06-04 14:35:44,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:44,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490212336] [2024-06-04 14:35:44,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:44,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:46,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:46,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490212336] [2024-06-04 14:35:46,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490212336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:46,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:46,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:46,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366673070] [2024-06-04 14:35:46,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:46,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:46,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:46,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:46,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:46,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:46,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 295 transitions, 2948 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:46,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:46,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:46,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:46,978 INFO L124 PetriNetUnfolderBase]: 595/1146 cut-off events. [2024-06-04 14:35:46,979 INFO L125 PetriNetUnfolderBase]: For 137934/137937 co-relation queries the response was YES. [2024-06-04 14:35:46,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7676 conditions, 1146 events. 595/1146 cut-off events. For 137934/137937 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6705 event pairs, 55 based on Foata normal form. 2/1141 useless extension candidates. Maximal degree in co-relation 7507. Up to 877 conditions per place. [2024-06-04 14:35:46,992 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 230 selfloop transitions, 77 changer transitions 0/310 dead transitions. [2024-06-04 14:35:46,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 310 transitions, 3654 flow [2024-06-04 14:35:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:46,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:46,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 14:35:46,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-04 14:35:46,993 INFO L175 Difference]: Start difference. First operand has 354 places, 295 transitions, 2948 flow. Second operand 11 states and 139 transitions. [2024-06-04 14:35:46,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 310 transitions, 3654 flow [2024-06-04 14:35:47,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 310 transitions, 3505 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-04 14:35:47,402 INFO L231 Difference]: Finished difference. Result has 358 places, 298 transitions, 3023 flow [2024-06-04 14:35:47,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2807, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3023, PETRI_PLACES=358, PETRI_TRANSITIONS=298} [2024-06-04 14:35:47,403 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-04 14:35:47,403 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 298 transitions, 3023 flow [2024-06-04 14:35:47,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:47,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:47,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:47,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 14:35:47,403 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)] === [2024-06-04 14:35:47,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:47,404 INFO L85 PathProgramCache]: Analyzing trace with hash -426901433, now seen corresponding path program 14 times [2024-06-04 14:35:47,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:47,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104798244] [2024-06-04 14:35:47,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:47,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:48,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:48,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104798244] [2024-06-04 14:35:48,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104798244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:48,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:48,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:48,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924878971] [2024-06-04 14:35:48,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:48,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:48,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:48,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:48,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:48,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:48,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 298 transitions, 3023 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:48,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:48,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:48,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:49,093 INFO L124 PetriNetUnfolderBase]: 593/1145 cut-off events. [2024-06-04 14:35:49,094 INFO L125 PetriNetUnfolderBase]: For 124790/124793 co-relation queries the response was YES. [2024-06-04 14:35:49,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7540 conditions, 1145 events. 593/1145 cut-off events. For 124790/124793 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6700 event pairs, 51 based on Foata normal form. 1/1141 useless extension candidates. Maximal degree in co-relation 7371. Up to 956 conditions per place. [2024-06-04 14:35:49,103 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 253 selfloop transitions, 53 changer transitions 0/309 dead transitions. [2024-06-04 14:35:49,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 309 transitions, 3661 flow [2024-06-04 14:35:49,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:49,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:49,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 14:35:49,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 14:35:49,104 INFO L175 Difference]: Start difference. First operand has 358 places, 298 transitions, 3023 flow. Second operand 11 states and 136 transitions. [2024-06-04 14:35:49,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 309 transitions, 3661 flow [2024-06-04 14:35:49,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 309 transitions, 3437 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:49,541 INFO L231 Difference]: Finished difference. Result has 361 places, 298 transitions, 2910 flow [2024-06-04 14:35:49,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2910, PETRI_PLACES=361, PETRI_TRANSITIONS=298} [2024-06-04 14:35:49,542 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-04 14:35:49,542 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 298 transitions, 2910 flow [2024-06-04 14:35:49,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:49,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:49,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:49,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 14:35:49,543 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)] === [2024-06-04 14:35:49,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:49,543 INFO L85 PathProgramCache]: Analyzing trace with hash -426634244, now seen corresponding path program 17 times [2024-06-04 14:35:49,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:49,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533712927] [2024-06-04 14:35:49,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:49,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:50,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:50,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533712927] [2024-06-04 14:35:50,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533712927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:50,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:50,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:35:50,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059595645] [2024-06-04 14:35:50,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:50,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:35:50,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:50,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:35:50,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:35:50,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:50,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 298 transitions, 2910 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:50,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:50,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:50,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:51,120 INFO L124 PetriNetUnfolderBase]: 597/1153 cut-off events. [2024-06-04 14:35:51,120 INFO L125 PetriNetUnfolderBase]: For 133827/133830 co-relation queries the response was YES. [2024-06-04 14:35:51,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7507 conditions, 1153 events. 597/1153 cut-off events. For 133827/133830 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 6747 event pairs, 53 based on Foata normal form. 2/1150 useless extension candidates. Maximal degree in co-relation 7337. Up to 961 conditions per place. [2024-06-04 14:35:51,134 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 258 selfloop transitions, 49 changer transitions 0/310 dead transitions. [2024-06-04 14:35:51,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 310 transitions, 3592 flow [2024-06-04 14:35:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:35:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:35:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 14:35:51,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-04 14:35:51,135 INFO L175 Difference]: Start difference. First operand has 361 places, 298 transitions, 2910 flow. Second operand 10 states and 127 transitions. [2024-06-04 14:35:51,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 310 transitions, 3592 flow [2024-06-04 14:35:51,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 310 transitions, 3472 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 14:35:51,585 INFO L231 Difference]: Finished difference. Result has 361 places, 299 transitions, 2938 flow [2024-06-04 14:35:51,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2790, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2938, PETRI_PLACES=361, PETRI_TRANSITIONS=299} [2024-06-04 14:35:51,585 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-04 14:35:51,585 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 299 transitions, 2938 flow [2024-06-04 14:35:51,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:51,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:51,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:51,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 14:35:51,586 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)] === [2024-06-04 14:35:51,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:51,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1256952805, now seen corresponding path program 15 times [2024-06-04 14:35:51,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:51,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962505783] [2024-06-04 14:35:51,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:51,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:53,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:53,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962505783] [2024-06-04 14:35:53,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962505783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:53,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:53,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:53,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053395944] [2024-06-04 14:35:53,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:53,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:53,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:53,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:53,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:53,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:53,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 299 transitions, 2938 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:53,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:53,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:53,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:53,622 INFO L124 PetriNetUnfolderBase]: 595/1150 cut-off events. [2024-06-04 14:35:53,622 INFO L125 PetriNetUnfolderBase]: For 121204/121207 co-relation queries the response was YES. [2024-06-04 14:35:53,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7374 conditions, 1150 events. 595/1150 cut-off events. For 121204/121207 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6732 event pairs, 53 based on Foata normal form. 1/1146 useless extension candidates. Maximal degree in co-relation 7203. Up to 703 conditions per place. [2024-06-04 14:35:53,636 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 172 selfloop transitions, 136 changer transitions 0/311 dead transitions. [2024-06-04 14:35:53,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 311 transitions, 3826 flow [2024-06-04 14:35:53,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:53,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:53,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-04 14:35:53,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-04 14:35:53,637 INFO L175 Difference]: Start difference. First operand has 361 places, 299 transitions, 2938 flow. Second operand 11 states and 145 transitions. [2024-06-04 14:35:53,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 311 transitions, 3826 flow [2024-06-04 14:35:54,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 311 transitions, 3652 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-04 14:35:54,053 INFO L231 Difference]: Finished difference. Result has 364 places, 299 transitions, 3041 flow [2024-06-04 14:35:54,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3041, PETRI_PLACES=364, PETRI_TRANSITIONS=299} [2024-06-04 14:35:54,053 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-04 14:35:54,053 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 299 transitions, 3041 flow [2024-06-04 14:35:54,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:54,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:54,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:54,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 14:35:54,054 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)] === [2024-06-04 14:35:54,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:54,054 INFO L85 PathProgramCache]: Analyzing trace with hash -426624944, now seen corresponding path program 18 times [2024-06-04 14:35:54,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:54,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336600640] [2024-06-04 14:35:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:54,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:55,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:55,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:55,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336600640] [2024-06-04 14:35:55,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336600640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:55,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:55,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:55,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054007898] [2024-06-04 14:35:55,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:55,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:55,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:55,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:55,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:55,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:55,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 299 transitions, 3041 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:55,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:55,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:55,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:55,822 INFO L124 PetriNetUnfolderBase]: 592/1145 cut-off events. [2024-06-04 14:35:55,822 INFO L125 PetriNetUnfolderBase]: For 114812/114815 co-relation queries the response was YES. [2024-06-04 14:35:55,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7154 conditions, 1145 events. 592/1145 cut-off events. For 114812/114815 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6728 event pairs, 50 based on Foata normal form. 2/1142 useless extension candidates. Maximal degree in co-relation 6982. Up to 927 conditions per place. [2024-06-04 14:35:55,833 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 254 selfloop transitions, 55 changer transitions 0/312 dead transitions. [2024-06-04 14:35:55,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 312 transitions, 3689 flow [2024-06-04 14:35:55,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:55,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:55,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 14:35:55,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 14:35:55,834 INFO L175 Difference]: Start difference. First operand has 364 places, 299 transitions, 3041 flow. Second operand 11 states and 137 transitions. [2024-06-04 14:35:55,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 312 transitions, 3689 flow [2024-06-04 14:35:56,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 312 transitions, 3408 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 14:35:56,247 INFO L231 Difference]: Finished difference. Result has 365 places, 299 transitions, 2874 flow [2024-06-04 14:35:56,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2874, PETRI_PLACES=365, PETRI_TRANSITIONS=299} [2024-06-04 14:35:56,247 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-04 14:35:56,247 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 299 transitions, 2874 flow [2024-06-04 14:35:56,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:56,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:56,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:56,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 14:35:56,248 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)] === [2024-06-04 14:35:56,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:56,248 INFO L85 PathProgramCache]: Analyzing trace with hash -434253083, now seen corresponding path program 16 times [2024-06-04 14:35:56,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:56,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605928610] [2024-06-04 14:35:56,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:56,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:35:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:35:58,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:35:58,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605928610] [2024-06-04 14:35:58,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605928610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:35:58,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:35:58,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:35:58,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208603469] [2024-06-04 14:35:58,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:35:58,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:35:58,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:35:58,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:35:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:35:58,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:35:58,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 299 transitions, 2874 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:58,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:35:58,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:35:58,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:35:59,030 INFO L124 PetriNetUnfolderBase]: 590/1142 cut-off events. [2024-06-04 14:35:59,030 INFO L125 PetriNetUnfolderBase]: For 101007/101010 co-relation queries the response was YES. [2024-06-04 14:35:59,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6858 conditions, 1142 events. 590/1142 cut-off events. For 101007/101010 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6702 event pairs, 52 based on Foata normal form. 1/1138 useless extension candidates. Maximal degree in co-relation 6685. Up to 953 conditions per place. [2024-06-04 14:35:59,043 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 255 selfloop transitions, 52 changer transitions 0/310 dead transitions. [2024-06-04 14:35:59,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 310 transitions, 3514 flow [2024-06-04 14:35:59,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:35:59,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:35:59,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 14:35:59,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 14:35:59,044 INFO L175 Difference]: Start difference. First operand has 365 places, 299 transitions, 2874 flow. Second operand 11 states and 137 transitions. [2024-06-04 14:35:59,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 310 transitions, 3514 flow [2024-06-04 14:35:59,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 310 transitions, 3244 flow, removed 43 selfloop flow, removed 12 redundant places. [2024-06-04 14:35:59,406 INFO L231 Difference]: Finished difference. Result has 364 places, 299 transitions, 2713 flow [2024-06-04 14:35:59,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2604, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2713, PETRI_PLACES=364, PETRI_TRANSITIONS=299} [2024-06-04 14:35:59,406 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-04 14:35:59,406 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 299 transitions, 2713 flow [2024-06-04 14:35:59,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:35:59,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:35:59,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:35:59,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 14:35:59,407 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)] === [2024-06-04 14:35:59,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:35:59,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1256960524, now seen corresponding path program 19 times [2024-06-04 14:35:59,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:35:59,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811400942] [2024-06-04 14:35:59,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:35:59,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:35:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:00,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:00,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:00,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811400942] [2024-06-04 14:36:00,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811400942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:00,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:00,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:36:00,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066048636] [2024-06-04 14:36:00,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:00,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:36:00,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:00,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:36:00,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:36:00,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:00,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 299 transitions, 2713 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:00,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:00,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:00,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:01,049 INFO L124 PetriNetUnfolderBase]: 587/1137 cut-off events. [2024-06-04 14:36:01,050 INFO L125 PetriNetUnfolderBase]: For 93599/93602 co-relation queries the response was YES. [2024-06-04 14:36:01,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6232 conditions, 1137 events. 587/1137 cut-off events. For 93599/93602 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6653 event pairs, 51 based on Foata normal form. 2/1134 useless extension candidates. Maximal degree in co-relation 6062. Up to 833 conditions per place. [2024-06-04 14:36:01,062 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 217 selfloop transitions, 90 changer transitions 0/310 dead transitions. [2024-06-04 14:36:01,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 310 transitions, 3353 flow [2024-06-04 14:36:01,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:36:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:36:01,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 14:36:01,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 14:36:01,064 INFO L175 Difference]: Start difference. First operand has 364 places, 299 transitions, 2713 flow. Second operand 10 states and 131 transitions. [2024-06-04 14:36:01,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 310 transitions, 3353 flow [2024-06-04 14:36:01,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 310 transitions, 3184 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-04 14:36:01,382 INFO L231 Difference]: Finished difference. Result has 363 places, 299 transitions, 2730 flow [2024-06-04 14:36:01,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2730, PETRI_PLACES=363, PETRI_TRANSITIONS=299} [2024-06-04 14:36:01,382 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-04 14:36:01,383 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 299 transitions, 2730 flow [2024-06-04 14:36:01,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:01,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:01,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:01,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 14:36:01,383 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)] === [2024-06-04 14:36:01,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:01,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1591530507, now seen corresponding path program 1 times [2024-06-04 14:36:01,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:01,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413071855] [2024-06-04 14:36:01,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:01,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:02,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:02,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:02,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413071855] [2024-06-04 14:36:02,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413071855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:02,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:02,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:02,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607872224] [2024-06-04 14:36:02,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:02,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:02,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:02,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:02,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:02,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:02,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 299 transitions, 2730 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:02,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:02,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:02,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:02,810 INFO L124 PetriNetUnfolderBase]: 599/1164 cut-off events. [2024-06-04 14:36:02,810 INFO L125 PetriNetUnfolderBase]: For 139394/139394 co-relation queries the response was YES. [2024-06-04 14:36:02,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6408 conditions, 1164 events. 599/1164 cut-off events. For 139394/139394 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6851 event pairs, 37 based on Foata normal form. 8/1170 useless extension candidates. Maximal degree in co-relation 6237. Up to 980 conditions per place. [2024-06-04 14:36:02,823 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 289 selfloop transitions, 15 changer transitions 18/325 dead transitions. [2024-06-04 14:36:02,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 325 transitions, 3494 flow [2024-06-04 14:36:02,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:02,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:02,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:36:02,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 14:36:02,824 INFO L175 Difference]: Start difference. First operand has 363 places, 299 transitions, 2730 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:36:02,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 325 transitions, 3494 flow [2024-06-04 14:36:03,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 325 transitions, 3302 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 14:36:03,121 INFO L231 Difference]: Finished difference. Result has 365 places, 295 transitions, 2552 flow [2024-06-04 14:36:03,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2538, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2552, PETRI_PLACES=365, PETRI_TRANSITIONS=295} [2024-06-04 14:36:03,121 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-04 14:36:03,121 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 295 transitions, 2552 flow [2024-06-04 14:36:03,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:03,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:03,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:03,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 14:36:03,122 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)] === [2024-06-04 14:36:03,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:03,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1234576431, now seen corresponding path program 2 times [2024-06-04 14:36:03,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:03,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091065679] [2024-06-04 14:36:03,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:03,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:04,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:04,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:04,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091065679] [2024-06-04 14:36:04,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091065679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:04,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:04,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:04,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740032742] [2024-06-04 14:36:04,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:04,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:04,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:04,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:04,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:04,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:04,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 295 transitions, 2552 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:04,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:04,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:04,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:04,803 INFO L124 PetriNetUnfolderBase]: 571/1106 cut-off events. [2024-06-04 14:36:04,803 INFO L125 PetriNetUnfolderBase]: For 93371/93371 co-relation queries the response was YES. [2024-06-04 14:36:04,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6058 conditions, 1106 events. 571/1106 cut-off events. For 93371/93371 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6444 event pairs, 35 based on Foata normal form. 2/1106 useless extension candidates. Maximal degree in co-relation 5886. Up to 973 conditions per place. [2024-06-04 14:36:04,815 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 288 selfloop transitions, 22 changer transitions 0/313 dead transitions. [2024-06-04 14:36:04,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 313 transitions, 3256 flow [2024-06-04 14:36:04,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:04,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 14:36:04,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 14:36:04,816 INFO L175 Difference]: Start difference. First operand has 365 places, 295 transitions, 2552 flow. Second operand 11 states and 129 transitions. [2024-06-04 14:36:04,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 313 transitions, 3256 flow [2024-06-04 14:36:05,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 313 transitions, 3218 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:36:05,143 INFO L231 Difference]: Finished difference. Result has 359 places, 296 transitions, 2602 flow [2024-06-04 14:36:05,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2602, PETRI_PLACES=359, PETRI_TRANSITIONS=296} [2024-06-04 14:36:05,144 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-04 14:36:05,144 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 296 transitions, 2602 flow [2024-06-04 14:36:05,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:05,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:05,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:05,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 14:36:05,145 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)] === [2024-06-04 14:36:05,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:05,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1234754061, now seen corresponding path program 3 times [2024-06-04 14:36:05,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:05,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386299791] [2024-06-04 14:36:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:05,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:06,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:06,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386299791] [2024-06-04 14:36:06,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386299791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:06,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:06,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:06,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23283467] [2024-06-04 14:36:06,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:06,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:06,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:06,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:06,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:06,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:06,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 296 transitions, 2602 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:06,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:06,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:06,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:06,796 INFO L124 PetriNetUnfolderBase]: 575/1114 cut-off events. [2024-06-04 14:36:06,796 INFO L125 PetriNetUnfolderBase]: For 89581/89581 co-relation queries the response was YES. [2024-06-04 14:36:06,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6143 conditions, 1114 events. 575/1114 cut-off events. For 89581/89581 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 6514 event pairs, 35 based on Foata normal form. 2/1114 useless extension candidates. Maximal degree in co-relation 5974. Up to 967 conditions per place. [2024-06-04 14:36:06,809 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 289 selfloop transitions, 23 changer transitions 0/315 dead transitions. [2024-06-04 14:36:06,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 315 transitions, 3314 flow [2024-06-04 14:36:06,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 14:36:06,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 14:36:06,810 INFO L175 Difference]: Start difference. First operand has 359 places, 296 transitions, 2602 flow. Second operand 11 states and 131 transitions. [2024-06-04 14:36:06,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 315 transitions, 3314 flow [2024-06-04 14:36:07,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 315 transitions, 3236 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 14:36:07,156 INFO L231 Difference]: Finished difference. Result has 361 places, 297 transitions, 2616 flow [2024-06-04 14:36:07,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2524, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2616, PETRI_PLACES=361, PETRI_TRANSITIONS=297} [2024-06-04 14:36:07,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-04 14:36:07,157 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 297 transitions, 2616 flow [2024-06-04 14:36:07,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:07,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:07,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:07,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 14:36:07,157 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)] === [2024-06-04 14:36:07,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:07,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1239338031, now seen corresponding path program 4 times [2024-06-04 14:36:07,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:07,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930890990] [2024-06-04 14:36:07,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:07,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:08,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:08,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930890990] [2024-06-04 14:36:08,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930890990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:08,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:08,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:08,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396783506] [2024-06-04 14:36:08,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:08,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:08,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:08,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:08,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:08,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:08,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 297 transitions, 2616 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:08,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:08,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:08,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:08,703 INFO L124 PetriNetUnfolderBase]: 579/1122 cut-off events. [2024-06-04 14:36:08,703 INFO L125 PetriNetUnfolderBase]: For 89673/89673 co-relation queries the response was YES. [2024-06-04 14:36:08,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6196 conditions, 1122 events. 579/1122 cut-off events. For 89673/89673 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6567 event pairs, 35 based on Foata normal form. 2/1122 useless extension candidates. Maximal degree in co-relation 6026. Up to 979 conditions per place. [2024-06-04 14:36:08,716 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 294 selfloop transitions, 20 changer transitions 0/317 dead transitions. [2024-06-04 14:36:08,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 317 transitions, 3336 flow [2024-06-04 14:36:08,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:08,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:08,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 14:36:08,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 14:36:08,717 INFO L175 Difference]: Start difference. First operand has 361 places, 297 transitions, 2616 flow. Second operand 11 states and 129 transitions. [2024-06-04 14:36:08,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 317 transitions, 3336 flow [2024-06-04 14:36:09,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 317 transitions, 3254 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-04 14:36:09,156 INFO L231 Difference]: Finished difference. Result has 363 places, 298 transitions, 2622 flow [2024-06-04 14:36:09,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2534, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2622, PETRI_PLACES=363, PETRI_TRANSITIONS=298} [2024-06-04 14:36:09,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-04 14:36:09,157 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 298 transitions, 2622 flow [2024-06-04 14:36:09,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:09,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:09,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:09,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 14:36:09,157 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)] === [2024-06-04 14:36:09,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:09,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1234569487, now seen corresponding path program 1 times [2024-06-04 14:36:09,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:09,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003651730] [2024-06-04 14:36:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:09,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:10,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:10,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003651730] [2024-06-04 14:36:10,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003651730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:10,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:10,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:36:10,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684183094] [2024-06-04 14:36:10,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:10,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:36:10,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:10,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:36:10,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:36:11,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:11,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 298 transitions, 2622 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:11,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:11,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:11,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:11,656 INFO L124 PetriNetUnfolderBase]: 591/1150 cut-off events. [2024-06-04 14:36:11,656 INFO L125 PetriNetUnfolderBase]: For 136116/136116 co-relation queries the response was YES. [2024-06-04 14:36:11,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6311 conditions, 1150 events. 591/1150 cut-off events. For 136116/136116 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 6774 event pairs, 45 based on Foata normal form. 8/1156 useless extension candidates. Maximal degree in co-relation 6140. Up to 988 conditions per place. [2024-06-04 14:36:11,667 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 287 selfloop transitions, 20 changer transitions 9/319 dead transitions. [2024-06-04 14:36:11,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 319 transitions, 3366 flow [2024-06-04 14:36:11,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:36:11,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:36:11,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 14:36:11,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 14:36:11,669 INFO L175 Difference]: Start difference. First operand has 363 places, 298 transitions, 2622 flow. Second operand 12 states and 141 transitions. [2024-06-04 14:36:11,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 319 transitions, 3366 flow [2024-06-04 14:36:12,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 319 transitions, 3288 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 14:36:12,030 INFO L231 Difference]: Finished difference. Result has 366 places, 295 transitions, 2563 flow [2024-06-04 14:36:12,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2563, PETRI_PLACES=366, PETRI_TRANSITIONS=295} [2024-06-04 14:36:12,031 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-04 14:36:12,031 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 295 transitions, 2563 flow [2024-06-04 14:36:12,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:12,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:12,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:12,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 14:36:12,031 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)] === [2024-06-04 14:36:12,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:12,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2113558037, now seen corresponding path program 5 times [2024-06-04 14:36:12,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:12,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295693923] [2024-06-04 14:36:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:12,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:13,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:13,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:13,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295693923] [2024-06-04 14:36:13,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295693923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:13,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:13,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:13,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241522162] [2024-06-04 14:36:13,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:13,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:13,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:13,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:13,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:13,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:13,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 295 transitions, 2563 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:13,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:13,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:13,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:13,858 INFO L124 PetriNetUnfolderBase]: 586/1143 cut-off events. [2024-06-04 14:36:13,859 INFO L125 PetriNetUnfolderBase]: For 136921/136921 co-relation queries the response was YES. [2024-06-04 14:36:13,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6208 conditions, 1143 events. 586/1143 cut-off events. For 136921/136921 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6715 event pairs, 41 based on Foata normal form. 8/1149 useless extension candidates. Maximal degree in co-relation 6036. Up to 983 conditions per place. [2024-06-04 14:36:13,872 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 282 selfloop transitions, 19 changer transitions 12/316 dead transitions. [2024-06-04 14:36:13,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 316 transitions, 3301 flow [2024-06-04 14:36:13,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:13,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:13,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 14:36:13,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:36:13,872 INFO L175 Difference]: Start difference. First operand has 366 places, 295 transitions, 2563 flow. Second operand 11 states and 132 transitions. [2024-06-04 14:36:13,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 316 transitions, 3301 flow [2024-06-04 14:36:14,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 316 transitions, 3165 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 14:36:14,229 INFO L231 Difference]: Finished difference. Result has 362 places, 291 transitions, 2433 flow [2024-06-04 14:36:14,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2433, PETRI_PLACES=362, PETRI_TRANSITIONS=291} [2024-06-04 14:36:14,229 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-04 14:36:14,229 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 291 transitions, 2433 flow [2024-06-04 14:36:14,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:14,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:14,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:14,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 14:36:14,230 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)] === [2024-06-04 14:36:14,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:14,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2113673357, now seen corresponding path program 6 times [2024-06-04 14:36:14,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:14,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235522790] [2024-06-04 14:36:14,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:14,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:15,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:15,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:15,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235522790] [2024-06-04 14:36:15,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235522790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:15,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:15,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:15,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798218695] [2024-06-04 14:36:15,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:15,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:15,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:15,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:15,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:15,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:15,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 291 transitions, 2433 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:15,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:15,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:15,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:15,863 INFO L124 PetriNetUnfolderBase]: 577/1128 cut-off events. [2024-06-04 14:36:15,863 INFO L125 PetriNetUnfolderBase]: For 136809/136809 co-relation queries the response was YES. [2024-06-04 14:36:15,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5965 conditions, 1128 events. 577/1128 cut-off events. For 136809/136809 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6592 event pairs, 37 based on Foata normal form. 8/1134 useless extension candidates. Maximal degree in co-relation 5795. Up to 963 conditions per place. [2024-06-04 14:36:15,877 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 279 selfloop transitions, 16 changer transitions 15/313 dead transitions. [2024-06-04 14:36:15,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 313 transitions, 3165 flow [2024-06-04 14:36:15,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:15,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:15,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 14:36:15,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:36:15,878 INFO L175 Difference]: Start difference. First operand has 362 places, 291 transitions, 2433 flow. Second operand 11 states and 132 transitions. [2024-06-04 14:36:15,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 313 transitions, 3165 flow [2024-06-04 14:36:16,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 313 transitions, 3121 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:36:16,218 INFO L231 Difference]: Finished difference. Result has 358 places, 286 transitions, 2386 flow [2024-06-04 14:36:16,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2386, PETRI_PLACES=358, PETRI_TRANSITIONS=286} [2024-06-04 14:36:16,219 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-04 14:36:16,219 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 286 transitions, 2386 flow [2024-06-04 14:36:16,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:16,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:16,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:16,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 14:36:16,219 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)] === [2024-06-04 14:36:16,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:16,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1942677977, now seen corresponding path program 7 times [2024-06-04 14:36:16,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:16,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578773501] [2024-06-04 14:36:16,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:16,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:17,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:17,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578773501] [2024-06-04 14:36:17,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578773501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:17,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:17,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:17,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15957414] [2024-06-04 14:36:17,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:17,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:17,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:17,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:17,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:17,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:17,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 286 transitions, 2386 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:17,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:17,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:17,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:17,867 INFO L124 PetriNetUnfolderBase]: 555/1078 cut-off events. [2024-06-04 14:36:17,867 INFO L125 PetriNetUnfolderBase]: For 93328/93328 co-relation queries the response was YES. [2024-06-04 14:36:17,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5775 conditions, 1078 events. 555/1078 cut-off events. For 93328/93328 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6258 event pairs, 37 based on Foata normal form. 2/1078 useless extension candidates. Maximal degree in co-relation 5607. Up to 936 conditions per place. [2024-06-04 14:36:17,892 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 268 selfloop transitions, 33 changer transitions 0/304 dead transitions. [2024-06-04 14:36:17,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 304 transitions, 3078 flow [2024-06-04 14:36:17,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:17,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:17,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:36:17,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 14:36:17,893 INFO L175 Difference]: Start difference. First operand has 358 places, 286 transitions, 2386 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:36:17,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 304 transitions, 3078 flow [2024-06-04 14:36:18,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 304 transitions, 3040 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 14:36:18,185 INFO L231 Difference]: Finished difference. Result has 353 places, 287 transitions, 2464 flow [2024-06-04 14:36:18,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2464, PETRI_PLACES=353, PETRI_TRANSITIONS=287} [2024-06-04 14:36:18,186 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-04 14:36:18,186 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 287 transitions, 2464 flow [2024-06-04 14:36:18,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:18,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:18,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:18,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 14:36:18,186 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)] === [2024-06-04 14:36:18,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:18,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1936421867, now seen corresponding path program 8 times [2024-06-04 14:36:18,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:18,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508575605] [2024-06-04 14:36:18,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:18,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:19,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:19,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508575605] [2024-06-04 14:36:19,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508575605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:19,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:19,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:19,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864918526] [2024-06-04 14:36:19,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:19,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:19,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:19,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:19,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:19,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:19,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 287 transitions, 2464 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:19,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:19,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:19,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:19,937 INFO L124 PetriNetUnfolderBase]: 571/1114 cut-off events. [2024-06-04 14:36:19,938 INFO L125 PetriNetUnfolderBase]: For 147189/147189 co-relation queries the response was YES. [2024-06-04 14:36:19,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6067 conditions, 1114 events. 571/1114 cut-off events. For 147189/147189 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6512 event pairs, 43 based on Foata normal form. 10/1122 useless extension candidates. Maximal degree in co-relation 5901. Up to 940 conditions per place. [2024-06-04 14:36:19,951 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 270 selfloop transitions, 29 changer transitions 6/308 dead transitions. [2024-06-04 14:36:19,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 308 transitions, 3226 flow [2024-06-04 14:36:19,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:19,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:19,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 14:36:19,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 14:36:19,961 INFO L175 Difference]: Start difference. First operand has 353 places, 287 transitions, 2464 flow. Second operand 11 states and 137 transitions. [2024-06-04 14:36:19,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 308 transitions, 3226 flow [2024-06-04 14:36:20,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 308 transitions, 3120 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-04 14:36:20,277 INFO L231 Difference]: Finished difference. Result has 355 places, 285 transitions, 2445 flow [2024-06-04 14:36:20,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2358, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2445, PETRI_PLACES=355, PETRI_TRANSITIONS=285} [2024-06-04 14:36:20,277 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-04 14:36:20,277 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 285 transitions, 2445 flow [2024-06-04 14:36:20,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:20,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:20,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:20,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 14:36:20,278 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)] === [2024-06-04 14:36:20,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:20,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1780656883, now seen corresponding path program 9 times [2024-06-04 14:36:20,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:20,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036055330] [2024-06-04 14:36:20,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:20,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:21,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:21,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:21,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036055330] [2024-06-04 14:36:21,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036055330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:21,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:21,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:21,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666684023] [2024-06-04 14:36:21,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:21,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:21,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:21,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:21,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:21,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:21,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 285 transitions, 2445 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:21,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:21,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:21,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:22,308 INFO L124 PetriNetUnfolderBase]: 558/1085 cut-off events. [2024-06-04 14:36:22,309 INFO L125 PetriNetUnfolderBase]: For 93077/93077 co-relation queries the response was YES. [2024-06-04 14:36:22,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5904 conditions, 1085 events. 558/1085 cut-off events. For 93077/93077 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6302 event pairs, 37 based on Foata normal form. 2/1085 useless extension candidates. Maximal degree in co-relation 5737. Up to 928 conditions per place. [2024-06-04 14:36:22,318 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 269 selfloop transitions, 32 changer transitions 0/304 dead transitions. [2024-06-04 14:36:22,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 304 transitions, 3143 flow [2024-06-04 14:36:22,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:22,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:22,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:36:22,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 14:36:22,319 INFO L175 Difference]: Start difference. First operand has 355 places, 285 transitions, 2445 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:36:22,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 304 transitions, 3143 flow [2024-06-04 14:36:22,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 304 transitions, 3037 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-04 14:36:22,640 INFO L231 Difference]: Finished difference. Result has 355 places, 286 transitions, 2457 flow [2024-06-04 14:36:22,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2457, PETRI_PLACES=355, PETRI_TRANSITIONS=286} [2024-06-04 14:36:22,640 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-04 14:36:22,640 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 286 transitions, 2457 flow [2024-06-04 14:36:22,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:22,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:22,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:22,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 14:36:22,641 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)] === [2024-06-04 14:36:22,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:22,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1942671033, now seen corresponding path program 2 times [2024-06-04 14:36:22,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:22,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826326287] [2024-06-04 14:36:22,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:22,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:24,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:24,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826326287] [2024-06-04 14:36:24,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826326287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:24,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:24,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:36:24,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870788224] [2024-06-04 14:36:24,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:24,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:36:24,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:24,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:36:24,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:36:24,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:24,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 286 transitions, 2457 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:24,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:24,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:24,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:25,080 INFO L124 PetriNetUnfolderBase]: 570/1113 cut-off events. [2024-06-04 14:36:25,080 INFO L125 PetriNetUnfolderBase]: For 139337/139337 co-relation queries the response was YES. [2024-06-04 14:36:25,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6008 conditions, 1113 events. 570/1113 cut-off events. For 139337/139337 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6513 event pairs, 43 based on Foata normal form. 8/1119 useless extension candidates. Maximal degree in co-relation 5841. Up to 956 conditions per place. [2024-06-04 14:36:25,093 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 271 selfloop transitions, 24 changer transitions 9/307 dead transitions. [2024-06-04 14:36:25,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 307 transitions, 3173 flow [2024-06-04 14:36:25,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:36:25,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:36:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-04 14:36:25,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:36:25,094 INFO L175 Difference]: Start difference. First operand has 355 places, 286 transitions, 2457 flow. Second operand 12 states and 144 transitions. [2024-06-04 14:36:25,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 307 transitions, 3173 flow [2024-06-04 14:36:25,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 307 transitions, 3065 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-04 14:36:25,381 INFO L231 Difference]: Finished difference. Result has 358 places, 283 transitions, 2376 flow [2024-06-04 14:36:25,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2376, PETRI_PLACES=358, PETRI_TRANSITIONS=283} [2024-06-04 14:36:25,382 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-04 14:36:25,382 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 283 transitions, 2376 flow [2024-06-04 14:36:25,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:25,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:25,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:25,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 14:36:25,383 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)] === [2024-06-04 14:36:25,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:25,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1936414923, now seen corresponding path program 3 times [2024-06-04 14:36:25,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:25,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504321094] [2024-06-04 14:36:25,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:25,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:26,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:26,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504321094] [2024-06-04 14:36:26,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504321094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:26,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:26,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:36:26,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612779510] [2024-06-04 14:36:26,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:26,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:36:26,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:26,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:36:26,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:36:26,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:26,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 283 transitions, 2376 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:26,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:26,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:26,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:27,411 INFO L124 PetriNetUnfolderBase]: 565/1110 cut-off events. [2024-06-04 14:36:27,412 INFO L125 PetriNetUnfolderBase]: For 140471/140471 co-relation queries the response was YES. [2024-06-04 14:36:27,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5873 conditions, 1110 events. 565/1110 cut-off events. For 140471/140471 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6494 event pairs, 45 based on Foata normal form. 8/1116 useless extension candidates. Maximal degree in co-relation 5705. Up to 939 conditions per place. [2024-06-04 14:36:27,425 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 267 selfloop transitions, 21 changer transitions 13/304 dead transitions. [2024-06-04 14:36:27,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 304 transitions, 3086 flow [2024-06-04 14:36:27,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:36:27,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:36:27,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 14:36:27,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-04 14:36:27,426 INFO L175 Difference]: Start difference. First operand has 358 places, 283 transitions, 2376 flow. Second operand 12 states and 145 transitions. [2024-06-04 14:36:27,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 304 transitions, 3086 flow [2024-06-04 14:36:27,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 304 transitions, 3034 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:36:27,758 INFO L231 Difference]: Finished difference. Result has 356 places, 277 transitions, 2322 flow [2024-06-04 14:36:27,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2322, PETRI_PLACES=356, PETRI_TRANSITIONS=277} [2024-06-04 14:36:27,759 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 325 predicate places. [2024-06-04 14:36:27,759 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 277 transitions, 2322 flow [2024-06-04 14:36:27,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:27,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:27,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:27,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 14:36:27,759 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)] === [2024-06-04 14:36:27,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:27,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1936175913, now seen corresponding path program 4 times [2024-06-04 14:36:27,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:27,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146102741] [2024-06-04 14:36:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:27,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:29,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:29,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146102741] [2024-06-04 14:36:29,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146102741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:29,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:29,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:36:29,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396887815] [2024-06-04 14:36:29,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:29,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:36:29,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:29,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:36:29,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:36:29,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:29,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 277 transitions, 2322 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:29,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:29,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:29,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:29,922 INFO L124 PetriNetUnfolderBase]: 549/1080 cut-off events. [2024-06-04 14:36:29,922 INFO L125 PetriNetUnfolderBase]: For 120113/120113 co-relation queries the response was YES. [2024-06-04 14:36:29,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5724 conditions, 1080 events. 549/1080 cut-off events. For 120113/120113 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6278 event pairs, 39 based on Foata normal form. 6/1084 useless extension candidates. Maximal degree in co-relation 5557. Up to 926 conditions per place. [2024-06-04 14:36:29,934 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 265 selfloop transitions, 19 changer transitions 11/298 dead transitions. [2024-06-04 14:36:29,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 298 transitions, 3006 flow [2024-06-04 14:36:29,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:36:29,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:36:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 14:36:29,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 14:36:29,935 INFO L175 Difference]: Start difference. First operand has 356 places, 277 transitions, 2322 flow. Second operand 12 states and 141 transitions. [2024-06-04 14:36:29,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 298 transitions, 3006 flow [2024-06-04 14:36:30,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 298 transitions, 2954 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 14:36:30,275 INFO L231 Difference]: Finished difference. Result has 350 places, 273 transitions, 2278 flow [2024-06-04 14:36:30,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2270, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2278, PETRI_PLACES=350, PETRI_TRANSITIONS=273} [2024-06-04 14:36:30,283 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-04 14:36:30,283 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 273 transitions, 2278 flow [2024-06-04 14:36:30,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:30,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:30,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:30,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 14:36:30,300 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)] === [2024-06-04 14:36:30,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:30,300 INFO L85 PathProgramCache]: Analyzing trace with hash 46150369, now seen corresponding path program 10 times [2024-06-04 14:36:30,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:30,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888393418] [2024-06-04 14:36:30,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:30,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:31,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:31,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:31,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888393418] [2024-06-04 14:36:31,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888393418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:31,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:31,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:31,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525428651] [2024-06-04 14:36:31,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:31,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:31,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:31,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:31,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:31,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:31,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 273 transitions, 2278 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:31,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:31,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:31,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:32,082 INFO L124 PetriNetUnfolderBase]: 549/1076 cut-off events. [2024-06-04 14:36:32,083 INFO L125 PetriNetUnfolderBase]: For 144319/144319 co-relation queries the response was YES. [2024-06-04 14:36:32,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5765 conditions, 1076 events. 549/1076 cut-off events. For 144319/144319 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6249 event pairs, 45 based on Foata normal form. 10/1084 useless extension candidates. Maximal degree in co-relation 5601. Up to 827 conditions per place. [2024-06-04 14:36:32,095 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 227 selfloop transitions, 55 changer transitions 6/291 dead transitions. [2024-06-04 14:36:32,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 291 transitions, 2996 flow [2024-06-04 14:36:32,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:32,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:32,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-04 14:36:32,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:36:32,096 INFO L175 Difference]: Start difference. First operand has 350 places, 273 transitions, 2278 flow. Second operand 11 states and 144 transitions. [2024-06-04 14:36:32,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 291 transitions, 2996 flow [2024-06-04 14:36:32,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 291 transitions, 2930 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-04 14:36:32,431 INFO L231 Difference]: Finished difference. Result has 343 places, 271 transitions, 2363 flow [2024-06-04 14:36:32,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2363, PETRI_PLACES=343, PETRI_TRANSITIONS=271} [2024-06-04 14:36:32,432 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-04 14:36:32,432 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 271 transitions, 2363 flow [2024-06-04 14:36:32,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:32,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:32,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:32,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 14:36:32,433 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)] === [2024-06-04 14:36:32,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:32,433 INFO L85 PathProgramCache]: Analyzing trace with hash 39894259, now seen corresponding path program 11 times [2024-06-04 14:36:32,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:32,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799443768] [2024-06-04 14:36:32,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:32,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:33,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:33,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799443768] [2024-06-04 14:36:33,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799443768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:33,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:33,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:33,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032531355] [2024-06-04 14:36:33,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:33,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:33,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:33,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:33,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:33,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:33,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 271 transitions, 2363 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:33,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:33,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:33,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:34,470 INFO L124 PetriNetUnfolderBase]: 536/1047 cut-off events. [2024-06-04 14:36:34,470 INFO L125 PetriNetUnfolderBase]: For 86133/86133 co-relation queries the response was YES. [2024-06-04 14:36:34,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5688 conditions, 1047 events. 536/1047 cut-off events. For 86133/86133 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6044 event pairs, 43 based on Foata normal form. 2/1047 useless extension candidates. Maximal degree in co-relation 5527. Up to 873 conditions per place. [2024-06-04 14:36:34,482 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 44 changer transitions 0/286 dead transitions. [2024-06-04 14:36:34,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 286 transitions, 3011 flow [2024-06-04 14:36:34,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:34,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 14:36:34,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 14:36:34,483 INFO L175 Difference]: Start difference. First operand has 343 places, 271 transitions, 2363 flow. Second operand 11 states and 136 transitions. [2024-06-04 14:36:34,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 286 transitions, 3011 flow [2024-06-04 14:36:34,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 286 transitions, 2831 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-04 14:36:34,809 INFO L231 Difference]: Finished difference. Result has 343 places, 272 transitions, 2325 flow [2024-06-04 14:36:34,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2325, PETRI_PLACES=343, PETRI_TRANSITIONS=272} [2024-06-04 14:36:34,815 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-04 14:36:34,815 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 272 transitions, 2325 flow [2024-06-04 14:36:34,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:34,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:34,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:34,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 14:36:34,815 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)] === [2024-06-04 14:36:34,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:34,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1510877307, now seen corresponding path program 12 times [2024-06-04 14:36:34,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:34,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497551915] [2024-06-04 14:36:34,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:34,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:35,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:35,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497551915] [2024-06-04 14:36:35,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497551915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:35,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:35,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:35,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407331415] [2024-06-04 14:36:35,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:35,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:35,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:35,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:35,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:36,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:36,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 272 transitions, 2325 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:36,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:36,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:36,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:36,468 INFO L124 PetriNetUnfolderBase]: 569/1114 cut-off events. [2024-06-04 14:36:36,468 INFO L125 PetriNetUnfolderBase]: For 157716/157716 co-relation queries the response was YES. [2024-06-04 14:36:36,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7275 conditions, 1114 events. 569/1114 cut-off events. For 157716/157716 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6469 event pairs, 56 based on Foata normal form. 2/1114 useless extension candidates. Maximal degree in co-relation 7113. Up to 823 conditions per place. [2024-06-04 14:36:36,481 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 227 selfloop transitions, 63 changer transitions 0/293 dead transitions. [2024-06-04 14:36:36,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 293 transitions, 3331 flow [2024-06-04 14:36:36,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:36,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:36,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-04 14:36:36,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-04 14:36:36,482 INFO L175 Difference]: Start difference. First operand has 343 places, 272 transitions, 2325 flow. Second operand 11 states and 145 transitions. [2024-06-04 14:36:36,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 293 transitions, 3331 flow [2024-06-04 14:36:37,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 293 transitions, 3199 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-04 14:36:37,043 INFO L231 Difference]: Finished difference. Result has 345 places, 274 transitions, 2425 flow [2024-06-04 14:36:37,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2193, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2425, PETRI_PLACES=345, PETRI_TRANSITIONS=274} [2024-06-04 14:36:37,044 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-04 14:36:37,044 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 274 transitions, 2425 flow [2024-06-04 14:36:37,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:37,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:37,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:37,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 14:36:37,044 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)] === [2024-06-04 14:36:37,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:37,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1738956087, now seen corresponding path program 13 times [2024-06-04 14:36:37,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:37,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288640107] [2024-06-04 14:36:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:37,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:38,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:38,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:38,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288640107] [2024-06-04 14:36:38,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288640107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:38,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:38,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:38,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607391698] [2024-06-04 14:36:38,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:38,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:38,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:38,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:38,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:38,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:38,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 274 transitions, 2425 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:38,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:38,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:38,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:38,826 INFO L124 PetriNetUnfolderBase]: 556/1091 cut-off events. [2024-06-04 14:36:38,826 INFO L125 PetriNetUnfolderBase]: For 145317/145317 co-relation queries the response was YES. [2024-06-04 14:36:38,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5932 conditions, 1091 events. 556/1091 cut-off events. For 145317/145317 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6352 event pairs, 49 based on Foata normal form. 10/1099 useless extension candidates. Maximal degree in co-relation 5769. Up to 847 conditions per place. [2024-06-04 14:36:38,839 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 225 selfloop transitions, 56 changer transitions 7/291 dead transitions. [2024-06-04 14:36:38,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 291 transitions, 3087 flow [2024-06-04 14:36:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 14:36:38,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-04 14:36:38,841 INFO L175 Difference]: Start difference. First operand has 345 places, 274 transitions, 2425 flow. Second operand 11 states and 142 transitions. [2024-06-04 14:36:38,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 291 transitions, 3087 flow [2024-06-04 14:36:39,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 291 transitions, 2883 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-04 14:36:39,178 INFO L231 Difference]: Finished difference. Result has 348 places, 270 transitions, 2305 flow [2024-06-04 14:36:39,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2305, PETRI_PLACES=348, PETRI_TRANSITIONS=270} [2024-06-04 14:36:39,179 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-04 14:36:39,179 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 270 transitions, 2305 flow [2024-06-04 14:36:39,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:39,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:39,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:39,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 14:36:39,179 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)] === [2024-06-04 14:36:39,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1843671565, now seen corresponding path program 14 times [2024-06-04 14:36:39,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:39,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126028731] [2024-06-04 14:36:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:39,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:40,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:40,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126028731] [2024-06-04 14:36:40,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126028731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:40,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:40,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:40,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151017571] [2024-06-04 14:36:40,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:40,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:40,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:40,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:40,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:40,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:40,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 270 transitions, 2305 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:40,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:40,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:40,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:40,787 INFO L124 PetriNetUnfolderBase]: 549/1084 cut-off events. [2024-06-04 14:36:40,787 INFO L125 PetriNetUnfolderBase]: For 128319/128319 co-relation queries the response was YES. [2024-06-04 14:36:40,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5749 conditions, 1084 events. 549/1084 cut-off events. For 128319/128319 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6304 event pairs, 47 based on Foata normal form. 8/1090 useless extension candidates. Maximal degree in co-relation 5585. Up to 929 conditions per place. [2024-06-04 14:36:40,799 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 255 selfloop transitions, 19 changer transitions 11/288 dead transitions. [2024-06-04 14:36:40,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 288 transitions, 2975 flow [2024-06-04 14:36:40,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:40,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:40,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 14:36:40,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-04 14:36:40,800 INFO L175 Difference]: Start difference. First operand has 348 places, 270 transitions, 2305 flow. Second operand 11 states and 130 transitions. [2024-06-04 14:36:40,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 288 transitions, 2975 flow [2024-06-04 14:36:41,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 288 transitions, 2835 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 14:36:41,171 INFO L231 Difference]: Finished difference. Result has 347 places, 267 transitions, 2180 flow [2024-06-04 14:36:41,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2165, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2180, PETRI_PLACES=347, PETRI_TRANSITIONS=267} [2024-06-04 14:36:41,172 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-04 14:36:41,172 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 267 transitions, 2180 flow [2024-06-04 14:36:41,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:41,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:41,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:41,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 14:36:41,172 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)] === [2024-06-04 14:36:41,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:41,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1848255535, now seen corresponding path program 15 times [2024-06-04 14:36:41,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:41,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175627507] [2024-06-04 14:36:41,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:41,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:42,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:42,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175627507] [2024-06-04 14:36:42,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175627507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:42,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:42,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:42,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747706683] [2024-06-04 14:36:42,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:42,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:42,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:42,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:42,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:42,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:42,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 267 transitions, 2180 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:42,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:42,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:42,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:42,876 INFO L124 PetriNetUnfolderBase]: 542/1067 cut-off events. [2024-06-04 14:36:42,877 INFO L125 PetriNetUnfolderBase]: For 130395/130395 co-relation queries the response was YES. [2024-06-04 14:36:42,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5587 conditions, 1067 events. 542/1067 cut-off events. For 130395/130395 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6160 event pairs, 41 based on Foata normal form. 8/1073 useless extension candidates. Maximal degree in co-relation 5423. Up to 911 conditions per place. [2024-06-04 14:36:42,888 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 252 selfloop transitions, 17 changer transitions 14/286 dead transitions. [2024-06-04 14:36:42,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 286 transitions, 2848 flow [2024-06-04 14:36:42,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:42,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:42,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 14:36:42,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-04 14:36:42,889 INFO L175 Difference]: Start difference. First operand has 347 places, 267 transitions, 2180 flow. Second operand 11 states and 130 transitions. [2024-06-04 14:36:42,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 286 transitions, 2848 flow [2024-06-04 14:36:43,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 286 transitions, 2804 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:36:43,255 INFO L231 Difference]: Finished difference. Result has 343 places, 263 transitions, 2151 flow [2024-06-04 14:36:43,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2151, PETRI_PLACES=343, PETRI_TRANSITIONS=263} [2024-06-04 14:36:43,255 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-04 14:36:43,255 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 263 transitions, 2151 flow [2024-06-04 14:36:43,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:43,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:43,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:43,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 14:36:43,256 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)] === [2024-06-04 14:36:43,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:43,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1677260155, now seen corresponding path program 16 times [2024-06-04 14:36:43,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:43,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857329921] [2024-06-04 14:36:43,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:43,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:44,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:44,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857329921] [2024-06-04 14:36:44,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857329921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:44,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:44,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:44,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842926468] [2024-06-04 14:36:44,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:44,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:44,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:44,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:44,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:44,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:44,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 263 transitions, 2151 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:44,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:44,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:44,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:45,126 INFO L124 PetriNetUnfolderBase]: 523/1024 cut-off events. [2024-06-04 14:36:45,127 INFO L125 PetriNetUnfolderBase]: For 89365/89365 co-relation queries the response was YES. [2024-06-04 14:36:45,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5443 conditions, 1024 events. 523/1024 cut-off events. For 89365/89365 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 5871 event pairs, 43 based on Foata normal form. 2/1024 useless extension candidates. Maximal degree in co-relation 5281. Up to 886 conditions per place. [2024-06-04 14:36:45,137 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 241 selfloop transitions, 34 changer transitions 0/278 dead transitions. [2024-06-04 14:36:45,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 278 transitions, 2785 flow [2024-06-04 14:36:45,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:45,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 14:36:45,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 14:36:45,138 INFO L175 Difference]: Start difference. First operand has 343 places, 263 transitions, 2151 flow. Second operand 11 states and 133 transitions. [2024-06-04 14:36:45,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 278 transitions, 2785 flow [2024-06-04 14:36:45,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 278 transitions, 2745 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 14:36:45,445 INFO L231 Difference]: Finished difference. Result has 338 places, 264 transitions, 2235 flow [2024-06-04 14:36:45,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2235, PETRI_PLACES=338, PETRI_TRANSITIONS=264} [2024-06-04 14:36:45,445 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-04 14:36:45,446 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 264 transitions, 2235 flow [2024-06-04 14:36:45,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:45,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:45,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:45,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 14:36:45,446 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)] === [2024-06-04 14:36:45,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:45,446 INFO L85 PathProgramCache]: Analyzing trace with hash -206277107, now seen corresponding path program 17 times [2024-06-04 14:36:45,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:45,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763203502] [2024-06-04 14:36:45,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:45,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:46,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:46,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763203502] [2024-06-04 14:36:46,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763203502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:46,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:46,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:46,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219761951] [2024-06-04 14:36:46,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:46,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:46,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:46,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:46,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:47,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:47,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 264 transitions, 2235 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:47,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:47,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:47,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:47,574 INFO L124 PetriNetUnfolderBase]: 556/1091 cut-off events. [2024-06-04 14:36:47,575 INFO L125 PetriNetUnfolderBase]: For 158002/158002 co-relation queries the response was YES. [2024-06-04 14:36:47,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7169 conditions, 1091 events. 556/1091 cut-off events. For 158002/158002 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6323 event pairs, 54 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 7009. Up to 880 conditions per place. [2024-06-04 14:36:47,588 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 246 selfloop transitions, 36 changer transitions 0/285 dead transitions. [2024-06-04 14:36:47,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 285 transitions, 3229 flow [2024-06-04 14:36:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:47,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 14:36:47,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 14:36:47,589 INFO L175 Difference]: Start difference. First operand has 338 places, 264 transitions, 2235 flow. Second operand 11 states and 138 transitions. [2024-06-04 14:36:47,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 285 transitions, 3229 flow [2024-06-04 14:36:48,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 285 transitions, 3115 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-04 14:36:48,159 INFO L231 Difference]: Finished difference. Result has 340 places, 266 transitions, 2303 flow [2024-06-04 14:36:48,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2121, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2303, PETRI_PLACES=340, PETRI_TRANSITIONS=266} [2024-06-04 14:36:48,159 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-04 14:36:48,160 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 266 transitions, 2303 flow [2024-06-04 14:36:48,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:48,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:48,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:48,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 14:36:48,160 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)] === [2024-06-04 14:36:48,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:48,161 INFO L85 PathProgramCache]: Analyzing trace with hash -199843367, now seen corresponding path program 18 times [2024-06-04 14:36:48,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:48,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826968561] [2024-06-04 14:36:48,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:48,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:49,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:49,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:49,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826968561] [2024-06-04 14:36:49,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826968561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:49,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:49,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:36:49,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312116489] [2024-06-04 14:36:49,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:49,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:36:49,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:49,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:36:49,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:36:49,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:49,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 266 transitions, 2303 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:49,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:49,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:49,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:49,769 INFO L124 PetriNetUnfolderBase]: 543/1068 cut-off events. [2024-06-04 14:36:49,770 INFO L125 PetriNetUnfolderBase]: For 145526/145526 co-relation queries the response was YES. [2024-06-04 14:36:49,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5784 conditions, 1068 events. 543/1068 cut-off events. For 145526/145526 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6201 event pairs, 47 based on Foata normal form. 10/1076 useless extension candidates. Maximal degree in co-relation 5623. Up to 898 conditions per place. [2024-06-04 14:36:49,782 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 244 selfloop transitions, 30 changer transitions 6/283 dead transitions. [2024-06-04 14:36:49,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 283 transitions, 2949 flow [2024-06-04 14:36:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:36:49,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 14:36:49,783 INFO L175 Difference]: Start difference. First operand has 340 places, 266 transitions, 2303 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:36:49,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 283 transitions, 2949 flow [2024-06-04 14:36:50,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 283 transitions, 2811 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-04 14:36:50,119 INFO L231 Difference]: Finished difference. Result has 344 places, 263 transitions, 2204 flow [2024-06-04 14:36:50,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2165, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2204, PETRI_PLACES=344, PETRI_TRANSITIONS=263} [2024-06-04 14:36:50,120 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-04 14:36:50,120 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 263 transitions, 2204 flow [2024-06-04 14:36:50,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:50,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:50,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:50,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 14:36:50,120 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)] === [2024-06-04 14:36:50,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:50,121 INFO L85 PathProgramCache]: Analyzing trace with hash -206092533, now seen corresponding path program 5 times [2024-06-04 14:36:50,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:50,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779460016] [2024-06-04 14:36:50,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:50,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:51,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:51,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779460016] [2024-06-04 14:36:51,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779460016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:51,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:51,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:36:51,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652959018] [2024-06-04 14:36:51,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:51,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:36:51,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:51,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:36:51,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:36:51,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:51,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 263 transitions, 2204 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:51,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:51,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:51,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:52,390 INFO L124 PetriNetUnfolderBase]: 538/1063 cut-off events. [2024-06-04 14:36:52,390 INFO L125 PetriNetUnfolderBase]: For 132059/132059 co-relation queries the response was YES. [2024-06-04 14:36:52,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5615 conditions, 1063 events. 538/1063 cut-off events. For 132059/132059 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6175 event pairs, 51 based on Foata normal form. 8/1069 useless extension candidates. Maximal degree in co-relation 5452. Up to 890 conditions per place. [2024-06-04 14:36:52,402 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 241 selfloop transitions, 24 changer transitions 12/280 dead transitions. [2024-06-04 14:36:52,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 280 transitions, 2844 flow [2024-06-04 14:36:52,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:36:52,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:36:52,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 14:36:52,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 14:36:52,404 INFO L175 Difference]: Start difference. First operand has 344 places, 263 transitions, 2204 flow. Second operand 11 states and 136 transitions. [2024-06-04 14:36:52,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 280 transitions, 2844 flow [2024-06-04 14:36:52,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 280 transitions, 2751 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:36:52,758 INFO L231 Difference]: Finished difference. Result has 343 places, 257 transitions, 2115 flow [2024-06-04 14:36:52,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2115, PETRI_PLACES=343, PETRI_TRANSITIONS=257} [2024-06-04 14:36:52,758 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-04 14:36:52,758 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 257 transitions, 2115 flow [2024-06-04 14:36:52,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:52,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:52,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:52,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 14:36:52,759 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)] === [2024-06-04 14:36:52,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:52,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1670758091, now seen corresponding path program 6 times [2024-06-04 14:36:52,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:52,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337499284] [2024-06-04 14:36:52,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:52,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:54,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:54,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:54,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337499284] [2024-06-04 14:36:54,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337499284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:54,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:54,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:36:54,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050521367] [2024-06-04 14:36:54,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:54,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:36:54,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:54,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:36:54,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:36:54,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:54,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 257 transitions, 2115 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:54,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:54,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:54,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:55,053 INFO L124 PetriNetUnfolderBase]: 544/1081 cut-off events. [2024-06-04 14:36:55,054 INFO L125 PetriNetUnfolderBase]: For 175553/175553 co-relation queries the response was YES. [2024-06-04 14:36:55,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6633 conditions, 1081 events. 544/1081 cut-off events. For 175553/175553 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6274 event pairs, 55 based on Foata normal form. 6/1085 useless extension candidates. Maximal degree in co-relation 6470. Up to 876 conditions per place. [2024-06-04 14:36:55,066 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 246 selfloop transitions, 23 changer transitions 7/279 dead transitions. [2024-06-04 14:36:55,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 279 transitions, 3041 flow [2024-06-04 14:36:55,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:36:55,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:36:55,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 14:36:55,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-04 14:36:55,067 INFO L175 Difference]: Start difference. First operand has 343 places, 257 transitions, 2115 flow. Second operand 12 states and 145 transitions. [2024-06-04 14:36:55,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 279 transitions, 3041 flow [2024-06-04 14:36:55,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 279 transitions, 2971 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-04 14:36:55,480 INFO L231 Difference]: Finished difference. Result has 337 places, 254 transitions, 2080 flow [2024-06-04 14:36:55,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2053, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2080, PETRI_PLACES=337, PETRI_TRANSITIONS=254} [2024-06-04 14:36:55,481 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-04 14:36:55,481 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 254 transitions, 2080 flow [2024-06-04 14:36:55,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:55,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:55,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:55,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 14:36:55,482 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)] === [2024-06-04 14:36:55,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:55,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1517317991, now seen corresponding path program 7 times [2024-06-04 14:36:55,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:55,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527841430] [2024-06-04 14:36:55,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:55,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:36:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:36:57,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:36:57,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527841430] [2024-06-04 14:36:57,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527841430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:36:57,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:36:57,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:36:57,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447075538] [2024-06-04 14:36:57,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:36:57,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:36:57,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:36:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:36:57,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:36:57,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:36:57,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 254 transitions, 2080 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:57,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:36:57,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:36:57,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:36:58,026 INFO L124 PetriNetUnfolderBase]: 541/1076 cut-off events. [2024-06-04 14:36:58,027 INFO L125 PetriNetUnfolderBase]: For 182574/182574 co-relation queries the response was YES. [2024-06-04 14:36:58,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6556 conditions, 1076 events. 541/1076 cut-off events. For 182574/182574 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6257 event pairs, 61 based on Foata normal form. 8/1082 useless extension candidates. Maximal degree in co-relation 6396. Up to 878 conditions per place. [2024-06-04 14:36:58,038 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 226 selfloop transitions, 36 changer transitions 7/272 dead transitions. [2024-06-04 14:36:58,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 272 transitions, 2706 flow [2024-06-04 14:36:58,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:36:58,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:36:58,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-04 14:36:58,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 14:36:58,045 INFO L175 Difference]: Start difference. First operand has 337 places, 254 transitions, 2080 flow. Second operand 12 states and 148 transitions. [2024-06-04 14:36:58,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 272 transitions, 2706 flow [2024-06-04 14:36:58,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 272 transitions, 2656 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:36:58,483 INFO L231 Difference]: Finished difference. Result has 335 places, 251 transitions, 2087 flow [2024-06-04 14:36:58,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2030, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2087, PETRI_PLACES=335, PETRI_TRANSITIONS=251} [2024-06-04 14:36:58,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-04 14:36:58,484 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 251 transitions, 2087 flow [2024-06-04 14:36:58,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:36:58,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:36:58,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:36:58,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 14:36:58,484 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)] === [2024-06-04 14:36:58,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:36:58,485 INFO L85 PathProgramCache]: Analyzing trace with hash -199836423, now seen corresponding path program 8 times [2024-06-04 14:36:58,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:36:58,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638835906] [2024-06-04 14:36:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:36:58,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:36:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:00,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:00,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638835906] [2024-06-04 14:37:00,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638835906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:00,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:00,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:37:00,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389813677] [2024-06-04 14:37:00,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:00,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:37:00,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:00,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:37:00,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:37:00,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:00,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 251 transitions, 2087 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:00,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:00,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:00,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:00,806 INFO L124 PetriNetUnfolderBase]: 514/1019 cut-off events. [2024-06-04 14:37:00,820 INFO L125 PetriNetUnfolderBase]: For 124663/124663 co-relation queries the response was YES. [2024-06-04 14:37:00,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5369 conditions, 1019 events. 514/1019 cut-off events. For 124663/124663 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 5888 event pairs, 47 based on Foata normal form. 8/1025 useless extension candidates. Maximal degree in co-relation 5210. Up to 845 conditions per place. [2024-06-04 14:37:00,846 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 235 selfloop transitions, 22 changer transitions 7/267 dead transitions. [2024-06-04 14:37:00,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 267 transitions, 2697 flow [2024-06-04 14:37:00,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:37:00,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:37:00,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 14:37:00,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 14:37:00,848 INFO L175 Difference]: Start difference. First operand has 335 places, 251 transitions, 2087 flow. Second operand 12 states and 138 transitions. [2024-06-04 14:37:00,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 267 transitions, 2697 flow [2024-06-04 14:37:01,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 267 transitions, 2625 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:37:01,162 INFO L231 Difference]: Finished difference. Result has 334 places, 248 transitions, 2038 flow [2024-06-04 14:37:01,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2038, PETRI_PLACES=334, PETRI_TRANSITIONS=248} [2024-06-04 14:37:01,163 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-04 14:37:01,163 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 248 transitions, 2038 flow [2024-06-04 14:37:01,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:01,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:01,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:01,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 14:37:01,163 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)] === [2024-06-04 14:37:01,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:01,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1511061881, now seen corresponding path program 9 times [2024-06-04 14:37:01,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:01,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70949161] [2024-06-04 14:37:01,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:01,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:03,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:03,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70949161] [2024-06-04 14:37:03,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70949161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:03,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:03,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:37:03,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399100429] [2024-06-04 14:37:03,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:03,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:37:03,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:03,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:37:03,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:37:03,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:03,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 248 transitions, 2038 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:03,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:03,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:03,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:03,938 INFO L124 PetriNetUnfolderBase]: 509/1016 cut-off events. [2024-06-04 14:37:03,939 INFO L125 PetriNetUnfolderBase]: For 122488/122488 co-relation queries the response was YES. [2024-06-04 14:37:03,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5289 conditions, 1016 events. 509/1016 cut-off events. For 122488/122488 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 5894 event pairs, 49 based on Foata normal form. 8/1022 useless extension candidates. Maximal degree in co-relation 5131. Up to 824 conditions per place. [2024-06-04 14:37:03,949 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 220 selfloop transitions, 34 changer transitions 9/266 dead transitions. [2024-06-04 14:37:03,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 266 transitions, 2652 flow [2024-06-04 14:37:03,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:37:03,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:37:03,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 14:37:03,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-04 14:37:03,950 INFO L175 Difference]: Start difference. First operand has 334 places, 248 transitions, 2038 flow. Second operand 12 states and 146 transitions. [2024-06-04 14:37:03,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 266 transitions, 2652 flow [2024-06-04 14:37:04,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 266 transitions, 2598 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:37:04,248 INFO L231 Difference]: Finished difference. Result has 331 places, 245 transitions, 2036 flow [2024-06-04 14:37:04,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2036, PETRI_PLACES=331, PETRI_TRANSITIONS=245} [2024-06-04 14:37:04,248 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-04 14:37:04,248 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 245 transitions, 2036 flow [2024-06-04 14:37:04,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:04,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:04,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:04,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 14:37:04,249 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)] === [2024-06-04 14:37:04,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:04,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1517557001, now seen corresponding path program 10 times [2024-06-04 14:37:04,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:04,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672492154] [2024-06-04 14:37:04,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:04,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:05,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:05,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:05,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672492154] [2024-06-04 14:37:05,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672492154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:05,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:05,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:05,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73527240] [2024-06-04 14:37:05,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:05,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:05,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:05,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:05,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:05,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:05,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 245 transitions, 2036 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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) [2024-06-04 14:37:05,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:05,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:05,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:05,964 INFO L124 PetriNetUnfolderBase]: 515/1038 cut-off events. [2024-06-04 14:37:05,964 INFO L125 PetriNetUnfolderBase]: For 144608/144608 co-relation queries the response was YES. [2024-06-04 14:37:05,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6011 conditions, 1038 events. 515/1038 cut-off events. For 144608/144608 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6014 event pairs, 58 based on Foata normal form. 6/1042 useless extension candidates. Maximal degree in co-relation 5854. Up to 779 conditions per place. [2024-06-04 14:37:05,976 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 221 selfloop transitions, 34 changer transitions 7/265 dead transitions. [2024-06-04 14:37:05,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 265 transitions, 2880 flow [2024-06-04 14:37:05,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:05,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 14:37:05,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 14:37:05,977 INFO L175 Difference]: Start difference. First operand has 331 places, 245 transitions, 2036 flow. Second operand 11 states and 143 transitions. [2024-06-04 14:37:05,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 265 transitions, 2880 flow [2024-06-04 14:37:06,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 265 transitions, 2804 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:37:06,405 INFO L231 Difference]: Finished difference. Result has 328 places, 242 transitions, 2014 flow [2024-06-04 14:37:06,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1964, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2014, PETRI_PLACES=328, PETRI_TRANSITIONS=242} [2024-06-04 14:37:06,406 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-04 14:37:06,406 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 242 transitions, 2014 flow [2024-06-04 14:37:06,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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) [2024-06-04 14:37:06,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:06,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:06,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-04 14:37:06,406 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)] === [2024-06-04 14:37:06,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:06,407 INFO L85 PathProgramCache]: Analyzing trace with hash 276373233, now seen corresponding path program 11 times [2024-06-04 14:37:06,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:06,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175033109] [2024-06-04 14:37:06,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:06,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:08,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175033109] [2024-06-04 14:37:08,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175033109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:08,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:08,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:37:08,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846476035] [2024-06-04 14:37:08,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:08,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:37:08,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:08,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:37:08,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:37:08,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:08,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 242 transitions, 2014 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:08,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:08,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:08,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:08,658 INFO L124 PetriNetUnfolderBase]: 530/1067 cut-off events. [2024-06-04 14:37:08,658 INFO L125 PetriNetUnfolderBase]: For 194444/194444 co-relation queries the response was YES. [2024-06-04 14:37:08,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7084 conditions, 1067 events. 530/1067 cut-off events. For 194444/194444 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6207 event pairs, 66 based on Foata normal form. 6/1071 useless extension candidates. Maximal degree in co-relation 6928. Up to 766 conditions per place. [2024-06-04 14:37:08,669 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 212 selfloop transitions, 39 changer transitions 9/263 dead transitions. [2024-06-04 14:37:08,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 263 transitions, 2888 flow [2024-06-04 14:37:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:37:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:37:08,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-04 14:37:08,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-04 14:37:08,670 INFO L175 Difference]: Start difference. First operand has 328 places, 242 transitions, 2014 flow. Second operand 12 states and 147 transitions. [2024-06-04 14:37:08,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 263 transitions, 2888 flow [2024-06-04 14:37:09,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 263 transitions, 2797 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 14:37:09,101 INFO L231 Difference]: Finished difference. Result has 325 places, 239 transitions, 1989 flow [2024-06-04 14:37:09,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1989, PETRI_PLACES=325, PETRI_TRANSITIONS=239} [2024-06-04 14:37:09,101 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-04 14:37:09,101 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 239 transitions, 1989 flow [2024-06-04 14:37:09,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:09,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:09,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:09,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-04 14:37:09,102 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)] === [2024-06-04 14:37:09,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:09,102 INFO L85 PathProgramCache]: Analyzing trace with hash 267802353, now seen corresponding path program 12 times [2024-06-04 14:37:09,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:09,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672560537] [2024-06-04 14:37:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:09,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:10,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:10,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:10,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672560537] [2024-06-04 14:37:10,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672560537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:10,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:10,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:37:10,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058592990] [2024-06-04 14:37:10,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:10,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:37:10,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:10,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:37:10,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:37:10,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:10,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 239 transitions, 1989 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:10,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:10,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:10,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:11,415 INFO L124 PetriNetUnfolderBase]: 525/1064 cut-off events. [2024-06-04 14:37:11,416 INFO L125 PetriNetUnfolderBase]: For 228827/228827 co-relation queries the response was YES. [2024-06-04 14:37:11,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6810 conditions, 1064 events. 525/1064 cut-off events. For 228827/228827 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6180 event pairs, 77 based on Foata normal form. 14/1076 useless extension candidates. Maximal degree in co-relation 6655. Up to 842 conditions per place. [2024-06-04 14:37:11,427 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 31 changer transitions 13/257 dead transitions. [2024-06-04 14:37:11,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 257 transitions, 2583 flow [2024-06-04 14:37:11,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:37:11,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:37:11,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 14:37:11,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-04 14:37:11,428 INFO L175 Difference]: Start difference. First operand has 325 places, 239 transitions, 1989 flow. Second operand 12 states and 146 transitions. [2024-06-04 14:37:11,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 257 transitions, 2583 flow [2024-06-04 14:37:11,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 257 transitions, 2503 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:37:11,916 INFO L231 Difference]: Finished difference. Result has 322 places, 233 transitions, 1932 flow [2024-06-04 14:37:11,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1932, PETRI_PLACES=322, PETRI_TRANSITIONS=233} [2024-06-04 14:37:11,916 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-04 14:37:11,916 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 233 transitions, 1932 flow [2024-06-04 14:37:11,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:11,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:11,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:11,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-04 14:37:11,917 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)] === [2024-06-04 14:37:11,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:11,917 INFO L85 PathProgramCache]: Analyzing trace with hash 276084933, now seen corresponding path program 13 times [2024-06-04 14:37:11,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:11,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752020009] [2024-06-04 14:37:11,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:11,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:13,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:13,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752020009] [2024-06-04 14:37:13,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752020009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:13,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:13,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:13,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311537913] [2024-06-04 14:37:13,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:13,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:13,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:13,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:13,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:13,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:13,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 233 transitions, 1932 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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) [2024-06-04 14:37:13,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:13,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:13,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:13,878 INFO L124 PetriNetUnfolderBase]: 486/981 cut-off events. [2024-06-04 14:37:13,879 INFO L125 PetriNetUnfolderBase]: For 134863/134863 co-relation queries the response was YES. [2024-06-04 14:37:13,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5749 conditions, 981 events. 486/981 cut-off events. For 134863/134863 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5585 event pairs, 54 based on Foata normal form. 6/985 useless extension candidates. Maximal degree in co-relation 5596. Up to 780 conditions per place. [2024-06-04 14:37:13,889 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 204 selfloop transitions, 27 changer transitions 16/250 dead transitions. [2024-06-04 14:37:13,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 250 transitions, 2502 flow [2024-06-04 14:37:13,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:13,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 14:37:13,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 14:37:13,890 INFO L175 Difference]: Start difference. First operand has 322 places, 233 transitions, 1932 flow. Second operand 11 states and 134 transitions. [2024-06-04 14:37:13,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 250 transitions, 2502 flow [2024-06-04 14:37:14,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 250 transitions, 2432 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:37:14,225 INFO L231 Difference]: Finished difference. Result has 315 places, 224 transitions, 1849 flow [2024-06-04 14:37:14,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1849, PETRI_PLACES=315, PETRI_TRANSITIONS=224} [2024-06-04 14:37:14,225 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 284 predicate places. [2024-06-04 14:37:14,225 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 224 transitions, 1849 flow [2024-06-04 14:37:14,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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) [2024-06-04 14:37:14,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:14,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:14,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-04 14:37:14,226 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)] === [2024-06-04 14:37:14,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:14,226 INFO L85 PathProgramCache]: Analyzing trace with hash 89180931, now seen corresponding path program 19 times [2024-06-04 14:37:14,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:14,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357041414] [2024-06-04 14:37:14,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:14,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:15,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:15,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357041414] [2024-06-04 14:37:15,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357041414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:15,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:15,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:15,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093933915] [2024-06-04 14:37:15,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:15,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:15,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:15,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:15,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:15,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:15,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 224 transitions, 1849 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:15,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:15,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:15,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:16,334 INFO L124 PetriNetUnfolderBase]: 465/931 cut-off events. [2024-06-04 14:37:16,334 INFO L125 PetriNetUnfolderBase]: For 107853/107856 co-relation queries the response was YES. [2024-06-04 14:37:16,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5551 conditions, 931 events. 465/931 cut-off events. For 107853/107856 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5211 event pairs, 60 based on Foata normal form. 2/928 useless extension candidates. Maximal degree in co-relation 5414. Up to 683 conditions per place. [2024-06-04 14:37:16,344 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 68 changer transitions 0/237 dead transitions. [2024-06-04 14:37:16,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 237 transitions, 2397 flow [2024-06-04 14:37:16,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:16,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:16,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 14:37:16,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 14:37:16,346 INFO L175 Difference]: Start difference. First operand has 315 places, 224 transitions, 1849 flow. Second operand 11 states and 138 transitions. [2024-06-04 14:37:16,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 237 transitions, 2397 flow [2024-06-04 14:37:16,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 237 transitions, 2329 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-04 14:37:16,680 INFO L231 Difference]: Finished difference. Result has 302 places, 225 transitions, 1975 flow [2024-06-04 14:37:16,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1975, PETRI_PLACES=302, PETRI_TRANSITIONS=225} [2024-06-04 14:37:16,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-04 14:37:16,681 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 225 transitions, 1975 flow [2024-06-04 14:37:16,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:16,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:16,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:16,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-04 14:37:16,681 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)] === [2024-06-04 14:37:16,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:16,681 INFO L85 PathProgramCache]: Analyzing trace with hash 82924821, now seen corresponding path program 20 times [2024-06-04 14:37:16,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:16,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121433252] [2024-06-04 14:37:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:16,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:18,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:18,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121433252] [2024-06-04 14:37:18,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121433252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:18,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:18,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:18,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965605384] [2024-06-04 14:37:18,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:18,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:18,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:18,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:18,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:18,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:18,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 225 transitions, 1975 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:18,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:18,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:18,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:18,545 INFO L124 PetriNetUnfolderBase]: 469/939 cut-off events. [2024-06-04 14:37:18,546 INFO L125 PetriNetUnfolderBase]: For 101550/101553 co-relation queries the response was YES. [2024-06-04 14:37:18,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5680 conditions, 939 events. 469/939 cut-off events. For 101550/101553 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5269 event pairs, 60 based on Foata normal form. 2/936 useless extension candidates. Maximal degree in co-relation 5547. Up to 593 conditions per place. [2024-06-04 14:37:18,555 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 125 selfloop transitions, 110 changer transitions 0/238 dead transitions. [2024-06-04 14:37:18,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 238 transitions, 2525 flow [2024-06-04 14:37:18,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:18,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:18,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 14:37:18,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-04 14:37:18,556 INFO L175 Difference]: Start difference. First operand has 302 places, 225 transitions, 1975 flow. Second operand 11 states and 142 transitions. [2024-06-04 14:37:18,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 238 transitions, 2525 flow [2024-06-04 14:37:18,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 238 transitions, 2343 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-04 14:37:18,841 INFO L231 Difference]: Finished difference. Result has 304 places, 226 transitions, 2071 flow [2024-06-04 14:37:18,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2071, PETRI_PLACES=304, PETRI_TRANSITIONS=226} [2024-06-04 14:37:18,841 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-04 14:37:18,841 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 226 transitions, 2071 flow [2024-06-04 14:37:18,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:18,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:18,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:18,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-04 14:37:18,842 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)] === [2024-06-04 14:37:18,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:18,842 INFO L85 PathProgramCache]: Analyzing trace with hash -349047855, now seen corresponding path program 21 times [2024-06-04 14:37:18,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:18,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424471796] [2024-06-04 14:37:18,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:18,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:20,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:20,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424471796] [2024-06-04 14:37:20,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424471796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:20,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:20,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:20,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991333103] [2024-06-04 14:37:20,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:20,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:20,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:20,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:20,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:20,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:20,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 226 transitions, 2071 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:20,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:20,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:20,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:20,636 INFO L124 PetriNetUnfolderBase]: 485/975 cut-off events. [2024-06-04 14:37:20,636 INFO L125 PetriNetUnfolderBase]: For 147220/147223 co-relation queries the response was YES. [2024-06-04 14:37:20,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5961 conditions, 975 events. 485/975 cut-off events. For 147220/147223 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5535 event pairs, 66 based on Foata normal form. 10/980 useless extension candidates. Maximal degree in co-relation 5827. Up to 737 conditions per place. [2024-06-04 14:37:20,647 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 58 changer transitions 7/242 dead transitions. [2024-06-04 14:37:20,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 242 transitions, 2681 flow [2024-06-04 14:37:20,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:20,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 14:37:20,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-04 14:37:20,648 INFO L175 Difference]: Start difference. First operand has 304 places, 226 transitions, 2071 flow. Second operand 11 states and 141 transitions. [2024-06-04 14:37:20,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 242 transitions, 2681 flow [2024-06-04 14:37:20,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 242 transitions, 2413 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-04 14:37:20,978 INFO L231 Difference]: Finished difference. Result has 306 places, 223 transitions, 1945 flow [2024-06-04 14:37:20,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1945, PETRI_PLACES=306, PETRI_TRANSITIONS=223} [2024-06-04 14:37:20,979 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-04 14:37:20,979 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 223 transitions, 1945 flow [2024-06-04 14:37:20,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:20,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:20,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:20,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-04 14:37:20,980 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)] === [2024-06-04 14:37:20,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:20,980 INFO L85 PathProgramCache]: Analyzing trace with hash 82747191, now seen corresponding path program 22 times [2024-06-04 14:37:20,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:20,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492746448] [2024-06-04 14:37:20,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:20,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:22,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:22,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492746448] [2024-06-04 14:37:22,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492746448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:22,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:22,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:22,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432874048] [2024-06-04 14:37:22,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:22,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:22,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:22,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:22,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:22,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:22,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 223 transitions, 1945 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:22,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:22,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:22,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:22,859 INFO L124 PetriNetUnfolderBase]: 499/1003 cut-off events. [2024-06-04 14:37:22,859 INFO L125 PetriNetUnfolderBase]: For 162717/162720 co-relation queries the response was YES. [2024-06-04 14:37:22,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7192 conditions, 1003 events. 499/1003 cut-off events. For 162717/162720 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5692 event pairs, 73 based on Foata normal form. 2/1000 useless extension candidates. Maximal degree in co-relation 7057. Up to 575 conditions per place. [2024-06-04 14:37:22,870 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 128 selfloop transitions, 111 changer transitions 0/242 dead transitions. [2024-06-04 14:37:22,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 242 transitions, 2829 flow [2024-06-04 14:37:22,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:22,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:22,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-04 14:37:22,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-04 14:37:22,871 INFO L175 Difference]: Start difference. First operand has 306 places, 223 transitions, 1945 flow. Second operand 11 states and 147 transitions. [2024-06-04 14:37:22,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 242 transitions, 2829 flow [2024-06-04 14:37:23,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 242 transitions, 2652 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-04 14:37:23,328 INFO L231 Difference]: Finished difference. Result has 306 places, 225 transitions, 2108 flow [2024-06-04 14:37:23,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2108, PETRI_PLACES=306, PETRI_TRANSITIONS=225} [2024-06-04 14:37:23,328 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-04 14:37:23,328 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 225 transitions, 2108 flow [2024-06-04 14:37:23,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:23,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:23,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:23,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-04 14:37:23,329 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)] === [2024-06-04 14:37:23,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:23,329 INFO L85 PathProgramCache]: Analyzing trace with hash -570692895, now seen corresponding path program 23 times [2024-06-04 14:37:23,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:23,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593260146] [2024-06-04 14:37:23,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:23,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:24,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:24,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:24,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593260146] [2024-06-04 14:37:24,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593260146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:24,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:24,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:24,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004490699] [2024-06-04 14:37:24,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:24,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:24,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:24,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:24,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:25,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:25,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 225 transitions, 2108 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:25,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:25,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:25,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:25,446 INFO L124 PetriNetUnfolderBase]: 515/1039 cut-off events. [2024-06-04 14:37:25,446 INFO L125 PetriNetUnfolderBase]: For 209898/209901 co-relation queries the response was YES. [2024-06-04 14:37:25,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7500 conditions, 1039 events. 515/1039 cut-off events. For 209898/209901 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5962 event pairs, 79 based on Foata normal form. 10/1044 useless extension candidates. Maximal degree in co-relation 7365. Up to 808 conditions per place. [2024-06-04 14:37:25,458 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 178 selfloop transitions, 54 changer transitions 6/241 dead transitions. [2024-06-04 14:37:25,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 241 transitions, 2720 flow [2024-06-04 14:37:25,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:25,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:25,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 14:37:25,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 14:37:25,459 INFO L175 Difference]: Start difference. First operand has 306 places, 225 transitions, 2108 flow. Second operand 11 states and 143 transitions. [2024-06-04 14:37:25,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 241 transitions, 2720 flow [2024-06-04 14:37:25,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 241 transitions, 2419 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-04 14:37:25,956 INFO L231 Difference]: Finished difference. Result has 307 places, 223 transitions, 1958 flow [2024-06-04 14:37:25,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1813, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1958, PETRI_PLACES=307, PETRI_TRANSITIONS=223} [2024-06-04 14:37:25,956 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-04 14:37:25,956 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 223 transitions, 1958 flow [2024-06-04 14:37:25,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:25,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:25,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:25,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-04 14:37:25,957 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)] === [2024-06-04 14:37:25,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:25,957 INFO L85 PathProgramCache]: Analyzing trace with hash -576949005, now seen corresponding path program 24 times [2024-06-04 14:37:25,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:25,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128801942] [2024-06-04 14:37:25,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:25,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:27,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:27,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128801942] [2024-06-04 14:37:27,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128801942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:27,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:27,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:27,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162068805] [2024-06-04 14:37:27,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:27,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:27,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:27,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:27,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:27,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:27,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 223 transitions, 1958 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:27,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:27,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:27,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:27,950 INFO L124 PetriNetUnfolderBase]: 502/1014 cut-off events. [2024-06-04 14:37:27,951 INFO L125 PetriNetUnfolderBase]: For 166338/166341 co-relation queries the response was YES. [2024-06-04 14:37:27,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7213 conditions, 1014 events. 502/1014 cut-off events. For 166338/166341 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5780 event pairs, 79 based on Foata normal form. 2/1011 useless extension candidates. Maximal degree in co-relation 7079. Up to 849 conditions per place. [2024-06-04 14:37:27,962 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 188 selfloop transitions, 45 changer transitions 0/236 dead transitions. [2024-06-04 14:37:27,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 236 transitions, 2506 flow [2024-06-04 14:37:27,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:27,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:27,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:37:27,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 14:37:27,963 INFO L175 Difference]: Start difference. First operand has 307 places, 223 transitions, 1958 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:37:27,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 236 transitions, 2506 flow [2024-06-04 14:37:28,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 236 transitions, 2344 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-04 14:37:28,463 INFO L231 Difference]: Finished difference. Result has 307 places, 224 transitions, 1946 flow [2024-06-04 14:37:28,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1946, PETRI_PLACES=307, PETRI_TRANSITIONS=224} [2024-06-04 14:37:28,464 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-04 14:37:28,464 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 224 transitions, 1946 flow [2024-06-04 14:37:28,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:28,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:28,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:28,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-04 14:37:28,465 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)] === [2024-06-04 14:37:28,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:28,465 INFO L85 PathProgramCache]: Analyzing trace with hash -577126635, now seen corresponding path program 25 times [2024-06-04 14:37:28,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:28,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089912853] [2024-06-04 14:37:28,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:28,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:30,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:30,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:30,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089912853] [2024-06-04 14:37:30,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089912853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:30,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:30,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:30,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837028787] [2024-06-04 14:37:30,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:30,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:30,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:30,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:30,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:30,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:30,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 224 transitions, 1946 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:30,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:30,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:30,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:30,732 INFO L124 PetriNetUnfolderBase]: 506/1022 cut-off events. [2024-06-04 14:37:30,732 INFO L125 PetriNetUnfolderBase]: For 169461/169464 co-relation queries the response was YES. [2024-06-04 14:37:30,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7251 conditions, 1022 events. 506/1022 cut-off events. For 169461/169464 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5842 event pairs, 79 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 7117. Up to 831 conditions per place. [2024-06-04 14:37:30,743 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 187 selfloop transitions, 48 changer transitions 0/238 dead transitions. [2024-06-04 14:37:30,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 238 transitions, 2502 flow [2024-06-04 14:37:30,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:30,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 14:37:30,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 14:37:30,745 INFO L175 Difference]: Start difference. First operand has 307 places, 224 transitions, 1946 flow. Second operand 11 states and 136 transitions. [2024-06-04 14:37:30,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 238 transitions, 2502 flow [2024-06-04 14:37:31,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 238 transitions, 2362 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-04 14:37:31,231 INFO L231 Difference]: Finished difference. Result has 309 places, 225 transitions, 1964 flow [2024-06-04 14:37:31,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1964, PETRI_PLACES=309, PETRI_TRANSITIONS=225} [2024-06-04 14:37:31,231 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-04 14:37:31,232 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 225 transitions, 1964 flow [2024-06-04 14:37:31,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:31,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:31,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:31,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-04 14:37:31,232 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)] === [2024-06-04 14:37:31,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:31,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1829983817, now seen corresponding path program 26 times [2024-06-04 14:37:31,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:31,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365197297] [2024-06-04 14:37:31,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:31,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:32,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:32,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365197297] [2024-06-04 14:37:32,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365197297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:32,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:32,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:32,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279416681] [2024-06-04 14:37:32,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:32,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:32,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:32,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:32,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:32,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:32,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 225 transitions, 1964 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:32,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:32,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:32,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:32,986 INFO L124 PetriNetUnfolderBase]: 518/1046 cut-off events. [2024-06-04 14:37:32,987 INFO L125 PetriNetUnfolderBase]: For 204296/204299 co-relation queries the response was YES. [2024-06-04 14:37:32,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7380 conditions, 1046 events. 518/1046 cut-off events. For 204296/204299 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6016 event pairs, 79 based on Foata normal form. 8/1049 useless extension candidates. Maximal degree in co-relation 7245. Up to 895 conditions per place. [2024-06-04 14:37:32,998 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 205 selfloop transitions, 22 changer transitions 11/241 dead transitions. [2024-06-04 14:37:32,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 241 transitions, 2540 flow [2024-06-04 14:37:32,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:32,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:32,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 14:37:32,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 14:37:32,999 INFO L175 Difference]: Start difference. First operand has 309 places, 225 transitions, 1964 flow. Second operand 11 states and 129 transitions. [2024-06-04 14:37:32,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 241 transitions, 2540 flow [2024-06-04 14:37:33,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 241 transitions, 2392 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-04 14:37:33,549 INFO L231 Difference]: Finished difference. Result has 311 places, 222 transitions, 1841 flow [2024-06-04 14:37:33,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1841, PETRI_PLACES=311, PETRI_TRANSITIONS=222} [2024-06-04 14:37:33,549 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 280 predicate places. [2024-06-04 14:37:33,549 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 222 transitions, 1841 flow [2024-06-04 14:37:33,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:33,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:33,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:33,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-04 14:37:33,550 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)] === [2024-06-04 14:37:33,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:33,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1829868497, now seen corresponding path program 27 times [2024-06-04 14:37:33,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:33,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837238020] [2024-06-04 14:37:33,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:33,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:34,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:34,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:34,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837238020] [2024-06-04 14:37:34,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837238020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:34,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:34,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:34,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999267809] [2024-06-04 14:37:34,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:34,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:34,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:34,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:34,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:34,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:34,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 222 transitions, 1841 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:34,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:34,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:34,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:35,115 INFO L124 PetriNetUnfolderBase]: 511/1037 cut-off events. [2024-06-04 14:37:35,116 INFO L125 PetriNetUnfolderBase]: For 206510/206513 co-relation queries the response was YES. [2024-06-04 14:37:35,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7199 conditions, 1037 events. 511/1037 cut-off events. For 206510/206513 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5958 event pairs, 77 based on Foata normal form. 8/1040 useless extension candidates. Maximal degree in co-relation 7063. Up to 877 conditions per place. [2024-06-04 14:37:35,127 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 202 selfloop transitions, 20 changer transitions 14/239 dead transitions. [2024-06-04 14:37:35,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 239 transitions, 2415 flow [2024-06-04 14:37:35,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:35,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 14:37:35,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 14:37:35,128 INFO L175 Difference]: Start difference. First operand has 311 places, 222 transitions, 1841 flow. Second operand 11 states and 129 transitions. [2024-06-04 14:37:35,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 239 transitions, 2415 flow [2024-06-04 14:37:35,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 239 transitions, 2308 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:37:35,676 INFO L231 Difference]: Finished difference. Result has 306 places, 218 transitions, 1758 flow [2024-06-04 14:37:35,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1758, PETRI_PLACES=306, PETRI_TRANSITIONS=218} [2024-06-04 14:37:35,676 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-04 14:37:35,676 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 218 transitions, 1758 flow [2024-06-04 14:37:35,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:35,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:35,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:35,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-04 14:37:35,677 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)] === [2024-06-04 14:37:35,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:35,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1948398427, now seen corresponding path program 28 times [2024-06-04 14:37:35,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:35,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079670588] [2024-06-04 14:37:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:35,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:36,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:36,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:36,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079670588] [2024-06-04 14:37:36,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079670588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:36,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:36,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:36,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372341564] [2024-06-04 14:37:36,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:36,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:36,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:36,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:36,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:36,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:36,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 218 transitions, 1758 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:36,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:36,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:36,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:37,353 INFO L124 PetriNetUnfolderBase]: 492/994 cut-off events. [2024-06-04 14:37:37,354 INFO L125 PetriNetUnfolderBase]: For 170915/170918 co-relation queries the response was YES. [2024-06-04 14:37:37,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6975 conditions, 994 events. 492/994 cut-off events. For 170915/170918 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5641 event pairs, 77 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 6841. Up to 754 conditions per place. [2024-06-04 14:37:37,365 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 164 selfloop transitions, 64 changer transitions 0/231 dead transitions. [2024-06-04 14:37:37,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 231 transitions, 2290 flow [2024-06-04 14:37:37,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:37,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:37,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 14:37:37,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 14:37:37,366 INFO L175 Difference]: Start difference. First operand has 306 places, 218 transitions, 1758 flow. Second operand 11 states and 137 transitions. [2024-06-04 14:37:37,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 231 transitions, 2290 flow [2024-06-04 14:37:37,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 231 transitions, 2244 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 14:37:37,845 INFO L231 Difference]: Finished difference. Result has 301 places, 219 transitions, 1894 flow [2024-06-04 14:37:37,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1894, PETRI_PLACES=301, PETRI_TRANSITIONS=219} [2024-06-04 14:37:37,846 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-04 14:37:37,846 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 219 transitions, 1894 flow [2024-06-04 14:37:37,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:37,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:37,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:37,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-04 14:37:37,846 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)] === [2024-06-04 14:37:37,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:37,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1338374259, now seen corresponding path program 29 times [2024-06-04 14:37:37,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:37,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870665729] [2024-06-04 14:37:37,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:37,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:39,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:39,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:39,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870665729] [2024-06-04 14:37:39,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870665729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:39,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:39,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:39,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229773169] [2024-06-04 14:37:39,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:39,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:39,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:39,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:39,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:39,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:39,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 219 transitions, 1894 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:39,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:39,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:39,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:39,686 INFO L124 PetriNetUnfolderBase]: 501/1012 cut-off events. [2024-06-04 14:37:39,687 INFO L125 PetriNetUnfolderBase]: For 199620/199620 co-relation queries the response was YES. [2024-06-04 14:37:39,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6886 conditions, 1012 events. 501/1012 cut-off events. For 199620/199620 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5772 event pairs, 73 based on Foata normal form. 10/1020 useless extension candidates. Maximal degree in co-relation 6754. Up to 876 conditions per place. [2024-06-04 14:37:39,697 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 198 selfloop transitions, 25 changer transitions 8/234 dead transitions. [2024-06-04 14:37:39,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 234 transitions, 2434 flow [2024-06-04 14:37:39,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:39,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:39,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 14:37:39,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 14:37:39,712 INFO L175 Difference]: Start difference. First operand has 301 places, 219 transitions, 1894 flow. Second operand 11 states and 133 transitions. [2024-06-04 14:37:39,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 234 transitions, 2434 flow [2024-06-04 14:37:40,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 234 transitions, 2230 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-04 14:37:40,266 INFO L231 Difference]: Finished difference. Result has 301 places, 214 transitions, 1706 flow [2024-06-04 14:37:40,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1706, PETRI_PLACES=301, PETRI_TRANSITIONS=214} [2024-06-04 14:37:40,267 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-04 14:37:40,267 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 214 transitions, 1706 flow [2024-06-04 14:37:40,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:40,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:40,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:40,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-04 14:37:40,268 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)] === [2024-06-04 14:37:40,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:40,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2000863877, now seen corresponding path program 30 times [2024-06-04 14:37:40,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:40,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691905982] [2024-06-04 14:37:40,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:40,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:41,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:41,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:41,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691905982] [2024-06-04 14:37:41,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691905982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:41,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:41,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:41,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973441887] [2024-06-04 14:37:41,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:41,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:41,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:41,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:41,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:41,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:41,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 214 transitions, 1706 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:41,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:41,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:41,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:42,178 INFO L124 PetriNetUnfolderBase]: 484/984 cut-off events. [2024-06-04 14:37:42,178 INFO L125 PetriNetUnfolderBase]: For 156462/156465 co-relation queries the response was YES. [2024-06-04 14:37:42,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6662 conditions, 984 events. 484/984 cut-off events. For 156462/156465 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5603 event pairs, 78 based on Foata normal form. 2/981 useless extension candidates. Maximal degree in co-relation 6529. Up to 844 conditions per place. [2024-06-04 14:37:42,188 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 187 selfloop transitions, 37 changer transitions 0/227 dead transitions. [2024-06-04 14:37:42,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 227 transitions, 2240 flow [2024-06-04 14:37:42,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 14:37:42,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:37:42,190 INFO L175 Difference]: Start difference. First operand has 301 places, 214 transitions, 1706 flow. Second operand 11 states and 132 transitions. [2024-06-04 14:37:42,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 227 transitions, 2240 flow [2024-06-04 14:37:42,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 227 transitions, 2126 flow, removed 23 selfloop flow, removed 12 redundant places. [2024-06-04 14:37:42,678 INFO L231 Difference]: Finished difference. Result has 300 places, 215 transitions, 1730 flow [2024-06-04 14:37:42,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1730, PETRI_PLACES=300, PETRI_TRANSITIONS=215} [2024-06-04 14:37:42,679 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-04 14:37:42,679 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 215 transitions, 1730 flow [2024-06-04 14:37:42,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:42,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:42,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:42,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-04 14:37:42,682 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)] === [2024-06-04 14:37:42,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:42,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1787384239, now seen corresponding path program 31 times [2024-06-04 14:37:42,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:42,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764629604] [2024-06-04 14:37:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:42,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:43,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:43,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764629604] [2024-06-04 14:37:43,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764629604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:43,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:43,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:43,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621473961] [2024-06-04 14:37:43,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:43,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:43,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:43,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:43,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:44,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:44,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 215 transitions, 1730 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:44,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:44,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:44,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:44,424 INFO L124 PetriNetUnfolderBase]: 510/1034 cut-off events. [2024-06-04 14:37:44,424 INFO L125 PetriNetUnfolderBase]: For 207766/207769 co-relation queries the response was YES. [2024-06-04 14:37:44,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7840 conditions, 1034 events. 510/1034 cut-off events. For 207766/207769 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5947 event pairs, 86 based on Foata normal form. 2/1031 useless extension candidates. Maximal degree in co-relation 7707. Up to 825 conditions per place. [2024-06-04 14:37:44,436 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 39 changer transitions 0/233 dead transitions. [2024-06-04 14:37:44,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 233 transitions, 2552 flow [2024-06-04 14:37:44,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:44,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 14:37:44,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-04 14:37:44,437 INFO L175 Difference]: Start difference. First operand has 300 places, 215 transitions, 1730 flow. Second operand 11 states and 137 transitions. [2024-06-04 14:37:44,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 233 transitions, 2552 flow [2024-06-04 14:37:45,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 233 transitions, 2424 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-04 14:37:45,102 INFO L231 Difference]: Finished difference. Result has 302 places, 216 transitions, 1744 flow [2024-06-04 14:37:45,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1744, PETRI_PLACES=302, PETRI_TRANSITIONS=216} [2024-06-04 14:37:45,102 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-04 14:37:45,102 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 216 transitions, 1744 flow [2024-06-04 14:37:45,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:45,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:45,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:45,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-04 14:37:45,103 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)] === [2024-06-04 14:37:45,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:45,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2007119987, now seen corresponding path program 32 times [2024-06-04 14:37:45,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:45,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644637334] [2024-06-04 14:37:45,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:45,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:46,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:46,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:46,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644637334] [2024-06-04 14:37:46,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644637334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:46,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:46,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:46,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271720918] [2024-06-04 14:37:46,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:46,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:46,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:46,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:46,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:46,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:46,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 216 transitions, 1744 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:46,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:46,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:46,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:47,107 INFO L124 PetriNetUnfolderBase]: 497/1015 cut-off events. [2024-06-04 14:37:47,107 INFO L125 PetriNetUnfolderBase]: For 197648/197651 co-relation queries the response was YES. [2024-06-04 14:37:47,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6523 conditions, 1015 events. 497/1015 cut-off events. For 197648/197651 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5846 event pairs, 81 based on Foata normal form. 10/1020 useless extension candidates. Maximal degree in co-relation 6389. Up to 843 conditions per place. [2024-06-04 14:37:47,118 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 33 changer transitions 6/231 dead transitions. [2024-06-04 14:37:47,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 231 transitions, 2278 flow [2024-06-04 14:37:47,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:47,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:47,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 14:37:47,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 14:37:47,119 INFO L175 Difference]: Start difference. First operand has 302 places, 216 transitions, 1744 flow. Second operand 11 states and 134 transitions. [2024-06-04 14:37:47,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 231 transitions, 2278 flow [2024-06-04 14:37:47,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 231 transitions, 2022 flow, removed 54 selfloop flow, removed 11 redundant places. [2024-06-04 14:37:47,617 INFO L231 Difference]: Finished difference. Result has 302 places, 213 transitions, 1538 flow [2024-06-04 14:37:47,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1538, PETRI_PLACES=302, PETRI_TRANSITIONS=213} [2024-06-04 14:37:47,631 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-04 14:37:47,631 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 213 transitions, 1538 flow [2024-06-04 14:37:47,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:47,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:47,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:47,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-04 14:37:47,632 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)] === [2024-06-04 14:37:47,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:47,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1977038995, now seen corresponding path program 14 times [2024-06-04 14:37:47,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:47,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286551688] [2024-06-04 14:37:47,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:47,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:49,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:49,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:49,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286551688] [2024-06-04 14:37:49,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286551688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:49,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:49,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:37:49,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725048006] [2024-06-04 14:37:49,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:49,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:37:49,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:49,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:37:49,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:37:49,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:49,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 213 transitions, 1538 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:49,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:49,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:49,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:50,193 INFO L124 PetriNetUnfolderBase]: 488/996 cut-off events. [2024-06-04 14:37:50,194 INFO L125 PetriNetUnfolderBase]: For 171215/171218 co-relation queries the response was YES. [2024-06-04 14:37:50,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6070 conditions, 996 events. 488/996 cut-off events. For 171215/171218 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5733 event pairs, 79 based on Foata normal form. 6/996 useless extension candidates. Maximal degree in co-relation 5938. Up to 624 conditions per place. [2024-06-04 14:37:50,205 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 150 selfloop transitions, 71 changer transitions 6/230 dead transitions. [2024-06-04 14:37:50,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 230 transitions, 2330 flow [2024-06-04 14:37:50,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:37:50,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:37:50,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-04 14:37:50,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 14:37:50,206 INFO L175 Difference]: Start difference. First operand has 302 places, 213 transitions, 1538 flow. Second operand 12 states and 150 transitions. [2024-06-04 14:37:50,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 230 transitions, 2330 flow [2024-06-04 14:37:50,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 230 transitions, 2175 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 14:37:50,791 INFO L231 Difference]: Finished difference. Result has 301 places, 211 transitions, 1516 flow [2024-06-04 14:37:50,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1516, PETRI_PLACES=301, PETRI_TRANSITIONS=211} [2024-06-04 14:37:50,792 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-04 14:37:50,792 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 211 transitions, 1516 flow [2024-06-04 14:37:50,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:50,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:50,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:50,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-04 14:37:50,792 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)] === [2024-06-04 14:37:50,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:50,793 INFO L85 PathProgramCache]: Analyzing trace with hash -349040911, now seen corresponding path program 15 times [2024-06-04 14:37:50,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:50,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43059661] [2024-06-04 14:37:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:50,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:52,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:52,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43059661] [2024-06-04 14:37:52,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43059661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:52,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:52,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:37:52,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049340152] [2024-06-04 14:37:52,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:52,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:37:52,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:52,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:37:52,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:37:52,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:52,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 211 transitions, 1516 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:52,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:52,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:52,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:52,952 INFO L124 PetriNetUnfolderBase]: 486/996 cut-off events. [2024-06-04 14:37:52,953 INFO L125 PetriNetUnfolderBase]: For 188690/188693 co-relation queries the response was YES. [2024-06-04 14:37:52,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6065 conditions, 996 events. 486/996 cut-off events. For 188690/188693 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5749 event pairs, 81 based on Foata normal form. 8/999 useless extension candidates. Maximal degree in co-relation 5933. Up to 804 conditions per place. [2024-06-04 14:37:52,961 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 172 selfloop transitions, 39 changer transitions 13/227 dead transitions. [2024-06-04 14:37:52,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 227 transitions, 2044 flow [2024-06-04 14:37:52,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:37:52,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:37:52,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 14:37:52,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-04 14:37:52,962 INFO L175 Difference]: Start difference. First operand has 301 places, 211 transitions, 1516 flow. Second operand 12 states and 145 transitions. [2024-06-04 14:37:52,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 227 transitions, 2044 flow [2024-06-04 14:37:53,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 227 transitions, 1883 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-04 14:37:53,436 INFO L231 Difference]: Finished difference. Result has 298 places, 205 transitions, 1408 flow [2024-06-04 14:37:53,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1408, PETRI_PLACES=298, PETRI_TRANSITIONS=205} [2024-06-04 14:37:53,436 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-04 14:37:53,436 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 205 transitions, 1408 flow [2024-06-04 14:37:53,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:53,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:53,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:53,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-04 14:37:53,437 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)] === [2024-06-04 14:37:53,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:53,437 INFO L85 PathProgramCache]: Analyzing trace with hash -348801901, now seen corresponding path program 16 times [2024-06-04 14:37:53,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:53,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936955092] [2024-06-04 14:37:53,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:53,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:54,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:54,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:54,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936955092] [2024-06-04 14:37:54,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936955092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:54,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:54,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:37:54,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221546866] [2024-06-04 14:37:54,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:54,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:37:54,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:54,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:37:54,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:37:54,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:54,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 205 transitions, 1408 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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) [2024-06-04 14:37:54,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:54,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:54,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:55,175 INFO L124 PetriNetUnfolderBase]: 470/970 cut-off events. [2024-06-04 14:37:55,175 INFO L125 PetriNetUnfolderBase]: For 170587/170590 co-relation queries the response was YES. [2024-06-04 14:37:55,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5824 conditions, 970 events. 470/970 cut-off events. For 170587/170590 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5532 event pairs, 77 based on Foata normal form. 6/971 useless extension candidates. Maximal degree in co-relation 5696. Up to 757 conditions per place. [2024-06-04 14:37:55,185 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 162 selfloop transitions, 41 changer transitions 14/220 dead transitions. [2024-06-04 14:37:55,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 220 transitions, 1908 flow [2024-06-04 14:37:55,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:37:55,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:37:55,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 14:37:55,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 14:37:55,186 INFO L175 Difference]: Start difference. First operand has 298 places, 205 transitions, 1408 flow. Second operand 11 states and 134 transitions. [2024-06-04 14:37:55,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 220 transitions, 1908 flow [2024-06-04 14:37:55,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 220 transitions, 1822 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:37:55,711 INFO L231 Difference]: Finished difference. Result has 291 places, 198 transitions, 1360 flow [2024-06-04 14:37:55,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1360, PETRI_PLACES=291, PETRI_TRANSITIONS=198} [2024-06-04 14:37:55,711 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-04 14:37:55,711 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 198 transitions, 1360 flow [2024-06-04 14:37:55,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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) [2024-06-04 14:37:55,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:55,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:55,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-04 14:37:55,712 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)] === [2024-06-04 14:37:55,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:55,712 INFO L85 PathProgramCache]: Analyzing trace with hash -570446941, now seen corresponding path program 17 times [2024-06-04 14:37:55,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:55,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182294561] [2024-06-04 14:37:55,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:55,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:37:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:37:57,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:37:57,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182294561] [2024-06-04 14:37:57,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182294561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:37:57,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:37:57,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:37:57,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475518633] [2024-06-04 14:37:57,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:37:57,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:37:57,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:37:57,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:37:57,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:37:57,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:37:57,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 198 transitions, 1360 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:57,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:37:57,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:37:57,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:37:57,881 INFO L124 PetriNetUnfolderBase]: 477/983 cut-off events. [2024-06-04 14:37:57,882 INFO L125 PetriNetUnfolderBase]: For 206813/206816 co-relation queries the response was YES. [2024-06-04 14:37:57,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6737 conditions, 983 events. 477/983 cut-off events. For 206813/206816 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5632 event pairs, 87 based on Foata normal form. 6/984 useless extension candidates. Maximal degree in co-relation 6612. Up to 751 conditions per place. [2024-06-04 14:37:57,891 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 170 selfloop transitions, 38 changer transitions 7/218 dead transitions. [2024-06-04 14:37:57,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 218 transitions, 2124 flow [2024-06-04 14:37:57,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:37:57,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:37:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-04 14:37:57,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 14:37:57,893 INFO L175 Difference]: Start difference. First operand has 291 places, 198 transitions, 1360 flow. Second operand 12 states and 148 transitions. [2024-06-04 14:37:57,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 218 transitions, 2124 flow [2024-06-04 14:37:58,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 218 transitions, 2024 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 14:37:58,551 INFO L231 Difference]: Finished difference. Result has 284 places, 195 transitions, 1331 flow [2024-06-04 14:37:58,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1331, PETRI_PLACES=284, PETRI_TRANSITIONS=195} [2024-06-04 14:37:58,551 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-04 14:37:58,551 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 195 transitions, 1331 flow [2024-06-04 14:37:58,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:37:58,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:37:58,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:37:58,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-04 14:37:58,552 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)] === [2024-06-04 14:37:58,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:37:58,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1763728617, now seen corresponding path program 18 times [2024-06-04 14:37:58,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:37:58,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124967623] [2024-06-04 14:37:58,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:37:58,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:37:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:00,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:00,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:00,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124967623] [2024-06-04 14:38:00,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124967623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:00,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:00,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:00,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428642988] [2024-06-04 14:38:00,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:00,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:00,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:00,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:00,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:00,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:00,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 195 transitions, 1331 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:00,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:00,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:00,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:00,594 INFO L124 PetriNetUnfolderBase]: 474/972 cut-off events. [2024-06-04 14:38:00,595 INFO L125 PetriNetUnfolderBase]: For 214638/214641 co-relation queries the response was YES. [2024-06-04 14:38:00,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6651 conditions, 972 events. 474/972 cut-off events. For 214638/214641 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5554 event pairs, 95 based on Foata normal form. 8/974 useless extension candidates. Maximal degree in co-relation 6528. Up to 688 conditions per place. [2024-06-04 14:38:00,603 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 131 selfloop transitions, 64 changer transitions 10/208 dead transitions. [2024-06-04 14:38:00,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 208 transitions, 1807 flow [2024-06-04 14:38:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:00,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 14:38:00,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-04 14:38:00,604 INFO L175 Difference]: Start difference. First operand has 284 places, 195 transitions, 1331 flow. Second operand 12 states and 146 transitions. [2024-06-04 14:38:00,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 208 transitions, 1807 flow [2024-06-04 14:38:01,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 208 transitions, 1731 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:38:01,212 INFO L231 Difference]: Finished difference. Result has 282 places, 191 transitions, 1360 flow [2024-06-04 14:38:01,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1360, PETRI_PLACES=282, PETRI_TRANSITIONS=191} [2024-06-04 14:38:01,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-04 14:38:01,213 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 191 transitions, 1360 flow [2024-06-04 14:38:01,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:01,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:01,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:01,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-04 14:38:01,214 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)] === [2024-06-04 14:38:01,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:01,214 INFO L85 PathProgramCache]: Analyzing trace with hash 89187875, now seen corresponding path program 19 times [2024-06-04 14:38:01,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:01,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060747821] [2024-06-04 14:38:01,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:01,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:03,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:03,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060747821] [2024-06-04 14:38:03,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060747821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:03,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:03,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:03,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825308293] [2024-06-04 14:38:03,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:03,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:03,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:03,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:03,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:03,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:03,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 191 transitions, 1360 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:03,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:03,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:03,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:03,792 INFO L124 PetriNetUnfolderBase]: 468/962 cut-off events. [2024-06-04 14:38:03,792 INFO L125 PetriNetUnfolderBase]: For 210721/210724 co-relation queries the response was YES. [2024-06-04 14:38:03,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6633 conditions, 962 events. 468/962 cut-off events. For 210721/210724 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5490 event pairs, 91 based on Foata normal form. 8/965 useless extension candidates. Maximal degree in co-relation 6511. Up to 646 conditions per place. [2024-06-04 14:38:03,801 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 121 selfloop transitions, 76 changer transitions 7/207 dead transitions. [2024-06-04 14:38:03,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 207 transitions, 1844 flow [2024-06-04 14:38:03,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:03,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-04 14:38:03,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-04 14:38:03,803 INFO L175 Difference]: Start difference. First operand has 282 places, 191 transitions, 1360 flow. Second operand 12 states and 153 transitions. [2024-06-04 14:38:03,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 207 transitions, 1844 flow [2024-06-04 14:38:04,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 207 transitions, 1705 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-04 14:38:04,484 INFO L231 Difference]: Finished difference. Result has 279 places, 188 transitions, 1360 flow [2024-06-04 14:38:04,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1360, PETRI_PLACES=279, PETRI_TRANSITIONS=188} [2024-06-04 14:38:04,485 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-04 14:38:04,485 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 188 transitions, 1360 flow [2024-06-04 14:38:04,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:04,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:04,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:04,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-04 14:38:04,485 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)] === [2024-06-04 14:38:04,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:04,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1720504221, now seen corresponding path program 20 times [2024-06-04 14:38:04,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:04,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415950397] [2024-06-04 14:38:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:04,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:06,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:06,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415950397] [2024-06-04 14:38:06,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415950397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:06,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:06,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:06,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113774201] [2024-06-04 14:38:06,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:06,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:06,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:06,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:06,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:07,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:07,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 188 transitions, 1360 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:07,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:07,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:07,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:07,597 INFO L124 PetriNetUnfolderBase]: 456/946 cut-off events. [2024-06-04 14:38:07,597 INFO L125 PetriNetUnfolderBase]: For 199461/199464 co-relation queries the response was YES. [2024-06-04 14:38:07,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6302 conditions, 946 events. 456/946 cut-off events. For 199461/199464 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5382 event pairs, 94 based on Foata normal form. 8/949 useless extension candidates. Maximal degree in co-relation 6180. Up to 691 conditions per place. [2024-06-04 14:38:07,606 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 133 selfloop transitions, 59 changer transitions 9/204 dead transitions. [2024-06-04 14:38:07,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 204 transitions, 1838 flow [2024-06-04 14:38:07,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:07,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-04 14:38:07,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-04 14:38:07,608 INFO L175 Difference]: Start difference. First operand has 279 places, 188 transitions, 1360 flow. Second operand 12 states and 147 transitions. [2024-06-04 14:38:07,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 204 transitions, 1838 flow [2024-06-04 14:38:08,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 204 transitions, 1680 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:38:08,075 INFO L231 Difference]: Finished difference. Result has 277 places, 185 transitions, 1305 flow [2024-06-04 14:38:08,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1305, PETRI_PLACES=277, PETRI_TRANSITIONS=185} [2024-06-04 14:38:08,075 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-04 14:38:08,075 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 185 transitions, 1305 flow [2024-06-04 14:38:08,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:08,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:08,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:08,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-04 14:38:08,076 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)] === [2024-06-04 14:38:08,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:08,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1956976251, now seen corresponding path program 21 times [2024-06-04 14:38:08,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:08,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569714209] [2024-06-04 14:38:08,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:08,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:09,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:09,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569714209] [2024-06-04 14:38:09,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569714209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:09,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:09,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:38:09,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258000807] [2024-06-04 14:38:09,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:09,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:38:09,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:09,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:38:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:38:09,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:09,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 185 transitions, 1305 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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) [2024-06-04 14:38:09,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:09,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:09,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:09,787 INFO L124 PetriNetUnfolderBase]: 469/981 cut-off events. [2024-06-04 14:38:09,787 INFO L125 PetriNetUnfolderBase]: For 226665/226668 co-relation queries the response was YES. [2024-06-04 14:38:09,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7227 conditions, 981 events. 469/981 cut-off events. For 226665/226668 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5642 event pairs, 100 based on Foata normal form. 6/982 useless extension candidates. Maximal degree in co-relation 7106. Up to 526 conditions per place. [2024-06-04 14:38:09,797 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 127 selfloop transitions, 66 changer transitions 9/205 dead transitions. [2024-06-04 14:38:09,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 205 transitions, 2035 flow [2024-06-04 14:38:09,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:38:09,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:38:09,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-04 14:38:09,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-04 14:38:09,798 INFO L175 Difference]: Start difference. First operand has 277 places, 185 transitions, 1305 flow. Second operand 11 states and 147 transitions. [2024-06-04 14:38:09,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 205 transitions, 2035 flow [2024-06-04 14:38:10,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 205 transitions, 1909 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:38:10,335 INFO L231 Difference]: Finished difference. Result has 274 places, 182 transitions, 1302 flow [2024-06-04 14:38:10,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1302, PETRI_PLACES=274, PETRI_TRANSITIONS=182} [2024-06-04 14:38:10,335 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-04 14:38:10,335 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 182 transitions, 1302 flow [2024-06-04 14:38:10,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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) [2024-06-04 14:38:10,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:10,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:10,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-04 14:38:10,336 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)] === [2024-06-04 14:38:10,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:10,336 INFO L85 PathProgramCache]: Analyzing trace with hash -340470031, now seen corresponding path program 22 times [2024-06-04 14:38:10,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:10,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992250937] [2024-06-04 14:38:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:10,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:11,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:11,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:11,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992250937] [2024-06-04 14:38:11,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992250937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:11,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:11,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:11,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136137205] [2024-06-04 14:38:11,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:11,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:11,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:11,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:11,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:11,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:11,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 182 transitions, 1302 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:11,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:11,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:11,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:12,366 INFO L124 PetriNetUnfolderBase]: 481/1009 cut-off events. [2024-06-04 14:38:12,366 INFO L125 PetriNetUnfolderBase]: For 261233/261236 co-relation queries the response was YES. [2024-06-04 14:38:12,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8198 conditions, 1009 events. 481/1009 cut-off events. For 261233/261236 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5858 event pairs, 110 based on Foata normal form. 6/1010 useless extension candidates. Maximal degree in co-relation 8078. Up to 694 conditions per place. [2024-06-04 14:38:12,375 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 146 selfloop transitions, 43 changer transitions 11/203 dead transitions. [2024-06-04 14:38:12,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 203 transitions, 2028 flow [2024-06-04 14:38:12,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:12,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:12,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-04 14:38:12,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-04 14:38:12,376 INFO L175 Difference]: Start difference. First operand has 274 places, 182 transitions, 1302 flow. Second operand 12 states and 147 transitions. [2024-06-04 14:38:12,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 203 transitions, 2028 flow [2024-06-04 14:38:13,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 203 transitions, 1893 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 14:38:13,243 INFO L231 Difference]: Finished difference. Result has 272 places, 177 transitions, 1238 flow [2024-06-04 14:38:13,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1238, PETRI_PLACES=272, PETRI_TRANSITIONS=177} [2024-06-04 14:38:13,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-04 14:38:13,243 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 177 transitions, 1238 flow [2024-06-04 14:38:13,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:13,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:13,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:13,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-04 14:38:13,244 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)] === [2024-06-04 14:38:13,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:13,244 INFO L85 PathProgramCache]: Analyzing trace with hash -570685951, now seen corresponding path program 23 times [2024-06-04 14:38:13,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:13,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314379205] [2024-06-04 14:38:13,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:13,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:15,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:15,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314379205] [2024-06-04 14:38:15,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314379205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:15,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:15,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:15,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79879548] [2024-06-04 14:38:15,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:15,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:15,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:15,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:15,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:15,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:15,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 177 transitions, 1238 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:15,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:15,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:15,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:15,980 INFO L124 PetriNetUnfolderBase]: 473/989 cut-off events. [2024-06-04 14:38:15,980 INFO L125 PetriNetUnfolderBase]: For 262968/262971 co-relation queries the response was YES. [2024-06-04 14:38:15,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8040 conditions, 989 events. 473/989 cut-off events. For 262968/262971 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5734 event pairs, 114 based on Foata normal form. 8/992 useless extension candidates. Maximal degree in co-relation 7922. Up to 820 conditions per place. [2024-06-04 14:38:15,990 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 148 selfloop transitions, 33 changer transitions 9/193 dead transitions. [2024-06-04 14:38:15,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 193 transitions, 1694 flow [2024-06-04 14:38:15,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:15,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 14:38:15,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-04 14:38:15,991 INFO L175 Difference]: Start difference. First operand has 272 places, 177 transitions, 1238 flow. Second operand 12 states and 145 transitions. [2024-06-04 14:38:15,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 193 transitions, 1694 flow [2024-06-04 14:38:16,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 193 transitions, 1607 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-04 14:38:16,735 INFO L231 Difference]: Finished difference. Result has 265 places, 174 transitions, 1200 flow [2024-06-04 14:38:16,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1200, PETRI_PLACES=265, PETRI_TRANSITIONS=174} [2024-06-04 14:38:16,735 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-04 14:38:16,736 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 174 transitions, 1200 flow [2024-06-04 14:38:16,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:16,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:16,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:16,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-04 14:38:16,736 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)] === [2024-06-04 14:38:16,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:16,736 INFO L85 PathProgramCache]: Analyzing trace with hash -576942061, now seen corresponding path program 24 times [2024-06-04 14:38:16,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:16,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777918418] [2024-06-04 14:38:16,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:16,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:19,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:19,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777918418] [2024-06-04 14:38:19,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777918418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:19,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:19,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:19,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777493096] [2024-06-04 14:38:19,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:19,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:19,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:19,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:19,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:20,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:20,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 174 transitions, 1200 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:20,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:20,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:20,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:20,648 INFO L124 PetriNetUnfolderBase]: 446/936 cut-off events. [2024-06-04 14:38:20,649 INFO L125 PetriNetUnfolderBase]: For 206192/206195 co-relation queries the response was YES. [2024-06-04 14:38:20,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6828 conditions, 936 events. 446/936 cut-off events. For 206192/206195 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5341 event pairs, 102 based on Foata normal form. 8/939 useless extension candidates. Maximal degree in co-relation 6714. Up to 767 conditions per place. [2024-06-04 14:38:20,656 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 146 selfloop transitions, 32 changer transitions 9/190 dead transitions. [2024-06-04 14:38:20,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 190 transitions, 1650 flow [2024-06-04 14:38:20,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:20,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-04 14:38:20,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-04 14:38:20,658 INFO L175 Difference]: Start difference. First operand has 265 places, 174 transitions, 1200 flow. Second operand 12 states and 143 transitions. [2024-06-04 14:38:20,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 190 transitions, 1650 flow [2024-06-04 14:38:21,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 190 transitions, 1580 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:38:21,278 INFO L231 Difference]: Finished difference. Result has 263 places, 171 transitions, 1177 flow [2024-06-04 14:38:21,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1177, PETRI_PLACES=263, PETRI_TRANSITIONS=171} [2024-06-04 14:38:21,279 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-04 14:38:21,279 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 171 transitions, 1177 flow [2024-06-04 14:38:21,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:21,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:21,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:21,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-04 14:38:21,279 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)] === [2024-06-04 14:38:21,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:21,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1985143017, now seen corresponding path program 25 times [2024-06-04 14:38:21,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:21,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298179053] [2024-06-04 14:38:21,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:21,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:22,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:22,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:22,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298179053] [2024-06-04 14:38:22,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298179053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:22,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:22,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:22,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014822558] [2024-06-04 14:38:22,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:22,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:22,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:22,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:22,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:23,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:23,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 171 transitions, 1177 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:23,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:23,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:23,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:23,489 INFO L124 PetriNetUnfolderBase]: 441/929 cut-off events. [2024-06-04 14:38:23,489 INFO L125 PetriNetUnfolderBase]: For 201987/201990 co-relation queries the response was YES. [2024-06-04 14:38:23,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6755 conditions, 929 events. 441/929 cut-off events. For 201987/201990 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5297 event pairs, 102 based on Foata normal form. 8/932 useless extension candidates. Maximal degree in co-relation 6642. Up to 667 conditions per place. [2024-06-04 14:38:23,497 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 121 selfloop transitions, 50 changer transitions 13/187 dead transitions. [2024-06-04 14:38:23,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 187 transitions, 1621 flow [2024-06-04 14:38:23,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:23,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:23,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-04 14:38:23,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 14:38:23,498 INFO L175 Difference]: Start difference. First operand has 263 places, 171 transitions, 1177 flow. Second operand 12 states and 150 transitions. [2024-06-04 14:38:23,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 187 transitions, 1621 flow [2024-06-04 14:38:24,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 187 transitions, 1553 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:38:24,011 INFO L231 Difference]: Finished difference. Result has 260 places, 165 transitions, 1172 flow [2024-06-04 14:38:24,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1172, PETRI_PLACES=260, PETRI_TRANSITIONS=165} [2024-06-04 14:38:24,011 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-04 14:38:24,011 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 165 transitions, 1172 flow [2024-06-04 14:38:24,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:24,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:24,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:24,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-04 14:38:24,012 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)] === [2024-06-04 14:38:24,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:24,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1985373657, now seen corresponding path program 26 times [2024-06-04 14:38:24,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:24,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239163565] [2024-06-04 14:38:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:24,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:26,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:26,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239163565] [2024-06-04 14:38:26,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239163565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:26,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:26,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:26,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362722718] [2024-06-04 14:38:26,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:26,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:26,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:26,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:26,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:26,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:26,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 165 transitions, 1172 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:26,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:26,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:26,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:26,759 INFO L124 PetriNetUnfolderBase]: 432/916 cut-off events. [2024-06-04 14:38:26,760 INFO L125 PetriNetUnfolderBase]: For 197830/197833 co-relation queries the response was YES. [2024-06-04 14:38:26,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6702 conditions, 916 events. 432/916 cut-off events. For 197830/197833 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5207 event pairs, 108 based on Foata normal form. 8/918 useless extension candidates. Maximal degree in co-relation 6590. Up to 638 conditions per place. [2024-06-04 14:38:26,767 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 115 selfloop transitions, 53 changer transitions 9/180 dead transitions. [2024-06-04 14:38:26,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 180 transitions, 1606 flow [2024-06-04 14:38:26,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:26,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:26,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 14:38:26,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-04 14:38:26,769 INFO L175 Difference]: Start difference. First operand has 260 places, 165 transitions, 1172 flow. Second operand 12 states and 145 transitions. [2024-06-04 14:38:26,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 180 transitions, 1606 flow [2024-06-04 14:38:27,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 180 transitions, 1486 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 14:38:27,348 INFO L231 Difference]: Finished difference. Result has 255 places, 164 transitions, 1160 flow [2024-06-04 14:38:27,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1160, PETRI_PLACES=255, PETRI_TRANSITIONS=164} [2024-06-04 14:38:27,348 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-04 14:38:27,349 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 164 transitions, 1160 flow [2024-06-04 14:38:27,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:27,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:27,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:27,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-04 14:38:27,349 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)] === [2024-06-04 14:38:27,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:27,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2000870821, now seen corresponding path program 27 times [2024-06-04 14:38:27,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:27,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316281749] [2024-06-04 14:38:27,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:27,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:29,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:29,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316281749] [2024-06-04 14:38:29,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316281749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:29,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:29,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:29,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159809908] [2024-06-04 14:38:29,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:29,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:29,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:29,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:29,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:30,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:30,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 164 transitions, 1160 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:30,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:30,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:30,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:30,452 INFO L124 PetriNetUnfolderBase]: 427/905 cut-off events. [2024-06-04 14:38:30,452 INFO L125 PetriNetUnfolderBase]: For 189685/189688 co-relation queries the response was YES. [2024-06-04 14:38:30,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6581 conditions, 905 events. 427/905 cut-off events. For 189685/189688 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5137 event pairs, 102 based on Foata normal form. 8/908 useless extension candidates. Maximal degree in co-relation 6471. Up to 756 conditions per place. [2024-06-04 14:38:30,460 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 140 selfloop transitions, 28 changer transitions 9/180 dead transitions. [2024-06-04 14:38:30,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 180 transitions, 1590 flow [2024-06-04 14:38:30,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:30,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:30,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 14:38:30,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 14:38:30,461 INFO L175 Difference]: Start difference. First operand has 255 places, 164 transitions, 1160 flow. Second operand 12 states and 141 transitions. [2024-06-04 14:38:30,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 180 transitions, 1590 flow [2024-06-04 14:38:31,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 180 transitions, 1471 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 14:38:31,008 INFO L231 Difference]: Finished difference. Result has 253 places, 161 transitions, 1082 flow [2024-06-04 14:38:31,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1082, PETRI_PLACES=253, PETRI_TRANSITIONS=161} [2024-06-04 14:38:31,009 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-04 14:38:31,009 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 161 transitions, 1082 flow [2024-06-04 14:38:31,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:31,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:31,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:31,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-04 14:38:31,010 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)] === [2024-06-04 14:38:31,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:31,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2007126931, now seen corresponding path program 28 times [2024-06-04 14:38:31,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:31,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937131795] [2024-06-04 14:38:31,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:31,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:33,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:33,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937131795] [2024-06-04 14:38:33,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937131795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:33,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:33,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:33,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371233954] [2024-06-04 14:38:33,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:33,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:33,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:33,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:33,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:33,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:33,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 161 transitions, 1082 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:33,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:33,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:33,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:34,040 INFO L124 PetriNetUnfolderBase]: 415/885 cut-off events. [2024-06-04 14:38:34,040 INFO L125 PetriNetUnfolderBase]: For 180718/180721 co-relation queries the response was YES. [2024-06-04 14:38:34,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6257 conditions, 885 events. 415/885 cut-off events. For 180718/180721 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4987 event pairs, 101 based on Foata normal form. 8/888 useless extension candidates. Maximal degree in co-relation 6148. Up to 736 conditions per place. [2024-06-04 14:38:34,048 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 138 selfloop transitions, 27 changer transitions 9/177 dead transitions. [2024-06-04 14:38:34,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 177 transitions, 1506 flow [2024-06-04 14:38:34,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:34,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:34,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 14:38:34,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 14:38:34,049 INFO L175 Difference]: Start difference. First operand has 253 places, 161 transitions, 1082 flow. Second operand 12 states and 141 transitions. [2024-06-04 14:38:34,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 177 transitions, 1506 flow [2024-06-04 14:38:34,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 177 transitions, 1446 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:38:34,516 INFO L231 Difference]: Finished difference. Result has 251 places, 158 transitions, 1061 flow [2024-06-04 14:38:34,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1061, PETRI_PLACES=251, PETRI_TRANSITIONS=158} [2024-06-04 14:38:34,523 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-04 14:38:34,523 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 158 transitions, 1061 flow [2024-06-04 14:38:34,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:34,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:34,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:34,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-04 14:38:34,525 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)] === [2024-06-04 14:38:34,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:34,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2007365941, now seen corresponding path program 29 times [2024-06-04 14:38:34,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:34,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737963899] [2024-06-04 14:38:34,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:34,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:36,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:36,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:36,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737963899] [2024-06-04 14:38:36,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737963899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:36,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:36,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:36,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921837437] [2024-06-04 14:38:36,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:36,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:36,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:36,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:36,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:36,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:36,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 158 transitions, 1061 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:36,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:36,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:36,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:36,562 INFO L124 PetriNetUnfolderBase]: 391/837 cut-off events. [2024-06-04 14:38:36,562 INFO L125 PetriNetUnfolderBase]: For 142836/142839 co-relation queries the response was YES. [2024-06-04 14:38:36,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5438 conditions, 837 events. 391/837 cut-off events. For 142836/142839 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4671 event pairs, 84 based on Foata normal form. 6/838 useless extension candidates. Maximal degree in co-relation 5330. Up to 690 conditions per place. [2024-06-04 14:38:36,570 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 25 changer transitions 10/174 dead transitions. [2024-06-04 14:38:36,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 174 transitions, 1471 flow [2024-06-04 14:38:36,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:36,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:36,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-04 14:38:36,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-04 14:38:36,571 INFO L175 Difference]: Start difference. First operand has 251 places, 158 transitions, 1061 flow. Second operand 12 states and 139 transitions. [2024-06-04 14:38:36,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 174 transitions, 1471 flow [2024-06-04 14:38:36,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 174 transitions, 1413 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:38:36,944 INFO L231 Difference]: Finished difference. Result has 249 places, 155 transitions, 1039 flow [2024-06-04 14:38:36,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1039, PETRI_PLACES=249, PETRI_TRANSITIONS=155} [2024-06-04 14:38:36,944 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-04 14:38:36,945 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 155 transitions, 1039 flow [2024-06-04 14:38:36,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:36,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:36,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:36,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-04 14:38:36,946 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)] === [2024-06-04 14:38:36,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:36,946 INFO L85 PathProgramCache]: Analyzing trace with hash 319107125, now seen corresponding path program 30 times [2024-06-04 14:38:36,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:36,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193881450] [2024-06-04 14:38:36,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:36,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:38,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:38,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:38,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193881450] [2024-06-04 14:38:38,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193881450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:38,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:38,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:38,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48383991] [2024-06-04 14:38:38,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:38,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:38,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:38,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:38,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:38,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:38,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 155 transitions, 1039 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:38,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:38,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:38,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:38,821 INFO L124 PetriNetUnfolderBase]: 381/819 cut-off events. [2024-06-04 14:38:38,822 INFO L125 PetriNetUnfolderBase]: For 141036/141039 co-relation queries the response was YES. [2024-06-04 14:38:38,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5161 conditions, 819 events. 381/819 cut-off events. For 141036/141039 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4561 event pairs, 89 based on Foata normal form. 8/822 useless extension candidates. Maximal degree in co-relation 5054. Up to 563 conditions per place. [2024-06-04 14:38:38,829 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 110 selfloop transitions, 50 changer transitions 9/172 dead transitions. [2024-06-04 14:38:38,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 172 transitions, 1455 flow [2024-06-04 14:38:38,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:38:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:38:38,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-04 14:38:38,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37740384615384615 [2024-06-04 14:38:38,830 INFO L175 Difference]: Start difference. First operand has 249 places, 155 transitions, 1039 flow. Second operand 13 states and 157 transitions. [2024-06-04 14:38:38,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 172 transitions, 1455 flow [2024-06-04 14:38:39,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 172 transitions, 1399 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:38:39,130 INFO L231 Difference]: Finished difference. Result has 245 places, 152 transitions, 1068 flow [2024-06-04 14:38:39,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1068, PETRI_PLACES=245, PETRI_TRANSITIONS=152} [2024-06-04 14:38:39,130 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-04 14:38:39,130 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 152 transitions, 1068 flow [2024-06-04 14:38:39,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:39,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:39,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:39,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-04 14:38:39,131 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)] === [2024-06-04 14:38:39,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:39,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1993425597, now seen corresponding path program 31 times [2024-06-04 14:38:39,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:39,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791327754] [2024-06-04 14:38:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:39,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:40,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:40,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791327754] [2024-06-04 14:38:40,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791327754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:40,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:40,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:40,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939640498] [2024-06-04 14:38:40,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:40,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:40,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:40,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:40,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:40,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:40,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 152 transitions, 1068 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:40,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:40,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:40,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:41,241 INFO L124 PetriNetUnfolderBase]: 372/806 cut-off events. [2024-06-04 14:38:41,241 INFO L125 PetriNetUnfolderBase]: For 125613/125616 co-relation queries the response was YES. [2024-06-04 14:38:41,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5097 conditions, 806 events. 372/806 cut-off events. For 125613/125616 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4469 event pairs, 85 based on Foata normal form. 6/807 useless extension candidates. Maximal degree in co-relation 4992. Up to 532 conditions per place. [2024-06-04 14:38:41,249 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 103 selfloop transitions, 51 changer transitions 11/168 dead transitions. [2024-06-04 14:38:41,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 168 transitions, 1466 flow [2024-06-04 14:38:41,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:41,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:41,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-04 14:38:41,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-04 14:38:41,250 INFO L175 Difference]: Start difference. First operand has 245 places, 152 transitions, 1068 flow. Second operand 12 states and 149 transitions. [2024-06-04 14:38:41,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 168 transitions, 1466 flow [2024-06-04 14:38:41,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 168 transitions, 1362 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:38:41,589 INFO L231 Difference]: Finished difference. Result has 242 places, 148 transitions, 1044 flow [2024-06-04 14:38:41,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1044, PETRI_PLACES=242, PETRI_TRANSITIONS=148} [2024-06-04 14:38:41,589 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-04 14:38:41,589 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 148 transitions, 1044 flow [2024-06-04 14:38:41,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:41,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:41,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:41,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-04 14:38:41,590 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)] === [2024-06-04 14:38:41,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:41,590 INFO L85 PathProgramCache]: Analyzing trace with hash 514221349, now seen corresponding path program 32 times [2024-06-04 14:38:41,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:41,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862444003] [2024-06-04 14:38:41,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:41,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:42,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:42,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862444003] [2024-06-04 14:38:42,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862444003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:42,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:42,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:38:42,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551166599] [2024-06-04 14:38:42,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:42,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:38:42,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:38:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:38:43,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:43,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 148 transitions, 1044 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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) [2024-06-04 14:38:43,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:43,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:43,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:43,297 INFO L124 PetriNetUnfolderBase]: 349/753 cut-off events. [2024-06-04 14:38:43,297 INFO L125 PetriNetUnfolderBase]: For 100904/100907 co-relation queries the response was YES. [2024-06-04 14:38:43,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4316 conditions, 753 events. 349/753 cut-off events. For 100904/100907 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4088 event pairs, 72 based on Foata normal form. 6/754 useless extension candidates. Maximal degree in co-relation 4212. Up to 489 conditions per place. [2024-06-04 14:38:43,303 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 48 changer transitions 12/163 dead transitions. [2024-06-04 14:38:43,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 163 transitions, 1430 flow [2024-06-04 14:38:43,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:38:43,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:38:43,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 14:38:43,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-04 14:38:43,304 INFO L175 Difference]: Start difference. First operand has 242 places, 148 transitions, 1044 flow. Second operand 11 states and 139 transitions. [2024-06-04 14:38:43,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 163 transitions, 1430 flow [2024-06-04 14:38:43,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 163 transitions, 1320 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:38:43,520 INFO L231 Difference]: Finished difference. Result has 236 places, 143 transitions, 1010 flow [2024-06-04 14:38:43,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1010, PETRI_PLACES=236, PETRI_TRANSITIONS=143} [2024-06-04 14:38:43,520 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-04 14:38:43,520 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 143 transitions, 1010 flow [2024-06-04 14:38:43,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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) [2024-06-04 14:38:43,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:43,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:43,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-04 14:38:43,521 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)] === [2024-06-04 14:38:43,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:43,521 INFO L85 PathProgramCache]: Analyzing trace with hash -549230907, now seen corresponding path program 33 times [2024-06-04 14:38:43,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:43,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482860889] [2024-06-04 14:38:43,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:43,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:45,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:45,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:45,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482860889] [2024-06-04 14:38:45,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482860889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:45,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:45,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:45,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530731638] [2024-06-04 14:38:45,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:45,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:45,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:45,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:45,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:45,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:45,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 143 transitions, 1010 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:45,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:45,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:45,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:46,106 INFO L124 PetriNetUnfolderBase]: 344/741 cut-off events. [2024-06-04 14:38:46,107 INFO L125 PetriNetUnfolderBase]: For 108084/108084 co-relation queries the response was YES. [2024-06-04 14:38:46,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4237 conditions, 741 events. 344/741 cut-off events. For 108084/108084 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3983 event pairs, 73 based on Foata normal form. 8/747 useless extension candidates. Maximal degree in co-relation 4135. Up to 644 conditions per place. [2024-06-04 14:38:46,113 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 15 changer transitions 9/159 dead transitions. [2024-06-04 14:38:46,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 159 transitions, 1396 flow [2024-06-04 14:38:46,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:46,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:46,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-04 14:38:46,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-04 14:38:46,114 INFO L175 Difference]: Start difference. First operand has 236 places, 143 transitions, 1010 flow. Second operand 12 states and 137 transitions. [2024-06-04 14:38:46,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 159 transitions, 1396 flow [2024-06-04 14:38:46,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 159 transitions, 1292 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:38:46,318 INFO L231 Difference]: Finished difference. Result has 230 places, 140 transitions, 923 flow [2024-06-04 14:38:46,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=923, PETRI_PLACES=230, PETRI_TRANSITIONS=140} [2024-06-04 14:38:46,318 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-04 14:38:46,318 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 140 transitions, 923 flow [2024-06-04 14:38:46,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:46,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:46,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:46,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-04 14:38:46,319 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)] === [2024-06-04 14:38:46,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:46,319 INFO L85 PathProgramCache]: Analyzing trace with hash -585859949, now seen corresponding path program 34 times [2024-06-04 14:38:46,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:46,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281431232] [2024-06-04 14:38:46,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:46,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:47,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:47,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:47,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281431232] [2024-06-04 14:38:47,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281431232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:47,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:47,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:38:47,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245981913] [2024-06-04 14:38:47,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:47,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:38:47,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:47,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:38:47,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:38:47,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:47,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 140 transitions, 923 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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) [2024-06-04 14:38:47,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:47,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:47,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:48,092 INFO L124 PetriNetUnfolderBase]: 350/763 cut-off events. [2024-06-04 14:38:48,092 INFO L125 PetriNetUnfolderBase]: For 113704/113704 co-relation queries the response was YES. [2024-06-04 14:38:48,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4650 conditions, 763 events. 350/763 cut-off events. For 113704/113704 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4156 event pairs, 82 based on Foata normal form. 6/767 useless extension candidates. Maximal degree in co-relation 4551. Up to 594 conditions per place. [2024-06-04 14:38:48,098 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 128 selfloop transitions, 15 changer transitions 12/158 dead transitions. [2024-06-04 14:38:48,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 158 transitions, 1481 flow [2024-06-04 14:38:48,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:38:48,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:38:48,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 14:38:48,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 14:38:48,099 INFO L175 Difference]: Start difference. First operand has 230 places, 140 transitions, 923 flow. Second operand 11 states and 134 transitions. [2024-06-04 14:38:48,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 158 transitions, 1481 flow [2024-06-04 14:38:48,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 158 transitions, 1443 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:38:48,341 INFO L231 Difference]: Finished difference. Result has 227 places, 132 transitions, 865 flow [2024-06-04 14:38:48,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=865, PETRI_PLACES=227, PETRI_TRANSITIONS=132} [2024-06-04 14:38:48,341 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-04 14:38:48,342 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 132 transitions, 865 flow [2024-06-04 14:38:48,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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) [2024-06-04 14:38:48,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:48,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:48,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-04 14:38:48,342 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)] === [2024-06-04 14:38:48,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:48,342 INFO L85 PathProgramCache]: Analyzing trace with hash -577528079, now seen corresponding path program 35 times [2024-06-04 14:38:48,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:48,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722146327] [2024-06-04 14:38:48,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:48,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:50,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:50,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:50,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722146327] [2024-06-04 14:38:50,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722146327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:50,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:50,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:50,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109061967] [2024-06-04 14:38:50,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:50,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:50,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:50,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:50,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:50,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:50,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 132 transitions, 865 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:50,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:50,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:50,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:50,561 INFO L124 PetriNetUnfolderBase]: 337/740 cut-off events. [2024-06-04 14:38:50,562 INFO L125 PetriNetUnfolderBase]: For 111020/111020 co-relation queries the response was YES. [2024-06-04 14:38:50,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4527 conditions, 740 events. 337/740 cut-off events. For 111020/111020 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4028 event pairs, 82 based on Foata normal form. 6/744 useless extension candidates. Maximal degree in co-relation 4429. Up to 633 conditions per place. [2024-06-04 14:38:50,567 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 123 selfloop transitions, 11 changer transitions 13/150 dead transitions. [2024-06-04 14:38:50,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 150 transitions, 1232 flow [2024-06-04 14:38:50,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:50,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:50,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-04 14:38:50,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-04 14:38:50,568 INFO L175 Difference]: Start difference. First operand has 227 places, 132 transitions, 865 flow. Second operand 12 states and 137 transitions. [2024-06-04 14:38:50,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 150 transitions, 1232 flow [2024-06-04 14:38:50,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 150 transitions, 1183 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-04 14:38:50,809 INFO L231 Difference]: Finished difference. Result has 222 places, 129 transitions, 824 flow [2024-06-04 14:38:50,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=824, PETRI_PLACES=222, PETRI_TRANSITIONS=129} [2024-06-04 14:38:50,809 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-04 14:38:50,809 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 129 transitions, 824 flow [2024-06-04 14:38:50,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:50,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:50,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:50,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-04 14:38:50,810 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)] === [2024-06-04 14:38:50,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:50,810 INFO L85 PathProgramCache]: Analyzing trace with hash 557213459, now seen corresponding path program 36 times [2024-06-04 14:38:50,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:50,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315153800] [2024-06-04 14:38:50,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:50,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:52,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:52,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315153800] [2024-06-04 14:38:52,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315153800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:52,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:52,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:52,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182643900] [2024-06-04 14:38:52,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:52,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:52,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:52,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:52,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:52,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:52,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 129 transitions, 824 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:52,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:52,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:52,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:52,894 INFO L124 PetriNetUnfolderBase]: 326/719 cut-off events. [2024-06-04 14:38:52,894 INFO L125 PetriNetUnfolderBase]: For 108368/108368 co-relation queries the response was YES. [2024-06-04 14:38:52,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4411 conditions, 719 events. 326/719 cut-off events. For 108368/108368 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3885 event pairs, 80 based on Foata normal form. 6/723 useless extension candidates. Maximal degree in co-relation 4314. Up to 609 conditions per place. [2024-06-04 14:38:52,899 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 119 selfloop transitions, 12 changer transitions 13/147 dead transitions. [2024-06-04 14:38:52,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 147 transitions, 1184 flow [2024-06-04 14:38:52,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:38:52,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:38:52,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-04 14:38:52,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-04 14:38:52,900 INFO L175 Difference]: Start difference. First operand has 222 places, 129 transitions, 824 flow. Second operand 13 states and 146 transitions. [2024-06-04 14:38:52,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 147 transitions, 1184 flow [2024-06-04 14:38:53,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 147 transitions, 1152 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 14:38:53,107 INFO L231 Difference]: Finished difference. Result has 218 places, 125 transitions, 799 flow [2024-06-04 14:38:53,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=799, PETRI_PLACES=218, PETRI_TRANSITIONS=125} [2024-06-04 14:38:53,108 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-04 14:38:53,108 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 125 transitions, 799 flow [2024-06-04 14:38:53,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:53,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:53,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:53,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-04 14:38:53,109 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)] === [2024-06-04 14:38:53,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:53,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1420537405, now seen corresponding path program 37 times [2024-06-04 14:38:53,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:53,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557061302] [2024-06-04 14:38:53,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:53,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:54,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:54,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557061302] [2024-06-04 14:38:54,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557061302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:54,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:54,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:54,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919767606] [2024-06-04 14:38:54,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:54,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:54,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:54,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:54,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:55,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:55,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 125 transitions, 799 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:55,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:55,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:55,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:55,547 INFO L124 PetriNetUnfolderBase]: 308/681 cut-off events. [2024-06-04 14:38:55,547 INFO L125 PetriNetUnfolderBase]: For 98566/98566 co-relation queries the response was YES. [2024-06-04 14:38:55,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4026 conditions, 681 events. 308/681 cut-off events. For 98566/98566 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3579 event pairs, 73 based on Foata normal form. 6/685 useless extension candidates. Maximal degree in co-relation 3932. Up to 570 conditions per place. [2024-06-04 14:38:55,552 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 114 selfloop transitions, 10 changer transitions 16/143 dead transitions. [2024-06-04 14:38:55,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 143 transitions, 1119 flow [2024-06-04 14:38:55,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:38:55,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:38:55,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-04 14:38:55,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485576923076923 [2024-06-04 14:38:55,553 INFO L175 Difference]: Start difference. First operand has 218 places, 125 transitions, 799 flow. Second operand 13 states and 145 transitions. [2024-06-04 14:38:55,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 143 transitions, 1119 flow [2024-06-04 14:38:55,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 143 transitions, 1073 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-04 14:38:55,702 INFO L231 Difference]: Finished difference. Result has 212 places, 119 transitions, 733 flow [2024-06-04 14:38:55,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=733, PETRI_PLACES=212, PETRI_TRANSITIONS=119} [2024-06-04 14:38:55,703 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-04 14:38:55,703 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 119 transitions, 733 flow [2024-06-04 14:38:55,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:55,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:55,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:55,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-04 14:38:55,703 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)] === [2024-06-04 14:38:55,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:55,704 INFO L85 PathProgramCache]: Analyzing trace with hash 235228296, now seen corresponding path program 1 times [2024-06-04 14:38:55,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:55,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001717286] [2024-06-04 14:38:55,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:55,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:57,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:57,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001717286] [2024-06-04 14:38:57,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001717286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:57,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:57,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:57,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328815768] [2024-06-04 14:38:57,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:57,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:57,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:57,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:57,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:57,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:57,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 119 transitions, 733 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:57,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:57,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:57,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:57,574 INFO L124 PetriNetUnfolderBase]: 293/648 cut-off events. [2024-06-04 14:38:57,574 INFO L125 PetriNetUnfolderBase]: For 92740/92740 co-relation queries the response was YES. [2024-06-04 14:38:57,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3813 conditions, 648 events. 293/648 cut-off events. For 92740/92740 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3339 event pairs, 66 based on Foata normal form. 6/652 useless extension candidates. Maximal degree in co-relation 3722. Up to 517 conditions per place. [2024-06-04 14:38:57,578 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 109 selfloop transitions, 16 changer transitions 12/140 dead transitions. [2024-06-04 14:38:57,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 140 transitions, 1067 flow [2024-06-04 14:38:57,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:38:57,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:38:57,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 14:38:57,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 14:38:57,579 INFO L175 Difference]: Start difference. First operand has 212 places, 119 transitions, 733 flow. Second operand 11 states and 131 transitions. [2024-06-04 14:38:57,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 140 transitions, 1067 flow [2024-06-04 14:38:57,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 140 transitions, 1014 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 14:38:57,714 INFO L231 Difference]: Finished difference. Result has 202 places, 115 transitions, 699 flow [2024-06-04 14:38:57,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=699, PETRI_PLACES=202, PETRI_TRANSITIONS=115} [2024-06-04 14:38:57,715 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-04 14:38:57,715 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 115 transitions, 699 flow [2024-06-04 14:38:57,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:57,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:57,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:57,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-04 14:38:57,715 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)] === [2024-06-04 14:38:57,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:57,716 INFO L85 PathProgramCache]: Analyzing trace with hash 382837896, now seen corresponding path program 2 times [2024-06-04 14:38:57,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:57,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108462026] [2024-06-04 14:38:57,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:57,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:38:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:38:59,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:38:59,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108462026] [2024-06-04 14:38:59,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108462026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:38:59,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:38:59,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:38:59,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032140024] [2024-06-04 14:38:59,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:38:59,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:38:59,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:38:59,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:38:59,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:38:59,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:38:59,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 115 transitions, 699 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:59,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:38:59,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:38:59,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:38:59,818 INFO L124 PetriNetUnfolderBase]: 279/622 cut-off events. [2024-06-04 14:38:59,818 INFO L125 PetriNetUnfolderBase]: For 85781/85781 co-relation queries the response was YES. [2024-06-04 14:38:59,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3617 conditions, 622 events. 279/622 cut-off events. For 85781/85781 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3167 event pairs, 66 based on Foata normal form. 6/626 useless extension candidates. Maximal degree in co-relation 3530. Up to 501 conditions per place. [2024-06-04 14:38:59,823 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 106 selfloop transitions, 17 changer transitions 10/136 dead transitions. [2024-06-04 14:38:59,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 136 transitions, 1023 flow [2024-06-04 14:38:59,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:38:59,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:38:59,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 14:38:59,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 14:38:59,824 INFO L175 Difference]: Start difference. First operand has 202 places, 115 transitions, 699 flow. Second operand 12 states and 138 transitions. [2024-06-04 14:38:59,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 136 transitions, 1023 flow [2024-06-04 14:38:59,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 136 transitions, 983 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 14:38:59,934 INFO L231 Difference]: Finished difference. Result has 197 places, 112 transitions, 682 flow [2024-06-04 14:38:59,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=682, PETRI_PLACES=197, PETRI_TRANSITIONS=112} [2024-06-04 14:38:59,935 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-04 14:38:59,935 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 112 transitions, 682 flow [2024-06-04 14:38:59,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:38:59,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:38:59,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:38:59,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-04 14:38:59,936 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)] === [2024-06-04 14:38:59,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:38:59,936 INFO L85 PathProgramCache]: Analyzing trace with hash 377331366, now seen corresponding path program 3 times [2024-06-04 14:38:59,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:38:59,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280640455] [2024-06-04 14:38:59,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:38:59,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:38:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:01,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:01,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280640455] [2024-06-04 14:39:01,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280640455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:01,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:01,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:39:01,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455804468] [2024-06-04 14:39:01,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:01,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:39:01,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:01,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:39:01,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:39:01,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:01,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 112 transitions, 682 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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) [2024-06-04 14:39:01,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:01,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:01,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:01,539 INFO L124 PetriNetUnfolderBase]: 272/609 cut-off events. [2024-06-04 14:39:01,540 INFO L125 PetriNetUnfolderBase]: For 79119/79119 co-relation queries the response was YES. [2024-06-04 14:39:01,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3508 conditions, 609 events. 272/609 cut-off events. For 79119/79119 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3082 event pairs, 64 based on Foata normal form. 6/613 useless extension candidates. Maximal degree in co-relation 3424. Up to 483 conditions per place. [2024-06-04 14:39:01,544 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 98 selfloop transitions, 11 changer transitions 20/132 dead transitions. [2024-06-04 14:39:01,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 132 transitions, 996 flow [2024-06-04 14:39:01,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:39:01,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:39:01,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 14:39:01,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 14:39:01,547 INFO L175 Difference]: Start difference. First operand has 197 places, 112 transitions, 682 flow. Second operand 11 states and 129 transitions. [2024-06-04 14:39:01,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 132 transitions, 996 flow [2024-06-04 14:39:01,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 132 transitions, 956 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:39:01,657 INFO L231 Difference]: Finished difference. Result has 192 places, 104 transitions, 630 flow [2024-06-04 14:39:01,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=630, PETRI_PLACES=192, PETRI_TRANSITIONS=104} [2024-06-04 14:39:01,657 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-04 14:39:01,658 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 104 transitions, 630 flow [2024-06-04 14:39:01,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 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) [2024-06-04 14:39:01,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:01,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:01,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-04 14:39:01,658 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)] === [2024-06-04 14:39:01,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:01,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1737495168, now seen corresponding path program 4 times [2024-06-04 14:39:01,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:01,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946142009] [2024-06-04 14:39:01,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:01,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:03,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:03,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:03,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946142009] [2024-06-04 14:39:03,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946142009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:03,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:03,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:03,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786767054] [2024-06-04 14:39:03,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:03,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:03,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:03,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:03,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:03,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:03,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 104 transitions, 630 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:03,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:03,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:03,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:04,111 INFO L124 PetriNetUnfolderBase]: 250/565 cut-off events. [2024-06-04 14:39:04,112 INFO L125 PetriNetUnfolderBase]: For 74816/74816 co-relation queries the response was YES. [2024-06-04 14:39:04,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3320 conditions, 565 events. 250/565 cut-off events. For 74816/74816 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2821 event pairs, 64 based on Foata normal form. 6/569 useless extension candidates. Maximal degree in co-relation 3238. Up to 454 conditions per place. [2024-06-04 14:39:04,116 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 15 changer transitions 10/122 dead transitions. [2024-06-04 14:39:04,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 122 transitions, 916 flow [2024-06-04 14:39:04,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:04,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:04,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-04 14:39:04,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-04 14:39:04,117 INFO L175 Difference]: Start difference. First operand has 192 places, 104 transitions, 630 flow. Second operand 12 states and 134 transitions. [2024-06-04 14:39:04,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 122 transitions, 916 flow [2024-06-04 14:39:04,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 122 transitions, 884 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 14:39:04,208 INFO L231 Difference]: Finished difference. Result has 184 places, 101 transitions, 617 flow [2024-06-04 14:39:04,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=617, PETRI_PLACES=184, PETRI_TRANSITIONS=101} [2024-06-04 14:39:04,208 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-04 14:39:04,208 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 101 transitions, 617 flow [2024-06-04 14:39:04,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:04,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:04,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:04,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-04 14:39:04,209 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)] === [2024-06-04 14:39:04,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:04,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1737639318, now seen corresponding path program 5 times [2024-06-04 14:39:04,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:04,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911715933] [2024-06-04 14:39:04,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:04,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:06,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:06,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:06,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911715933] [2024-06-04 14:39:06,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911715933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:06,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:06,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:06,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708979062] [2024-06-04 14:39:06,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:06,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:06,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:06,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:06,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:06,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:06,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 101 transitions, 617 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:06,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:06,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:06,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:06,745 INFO L124 PetriNetUnfolderBase]: 243/552 cut-off events. [2024-06-04 14:39:06,745 INFO L125 PetriNetUnfolderBase]: For 66600/66600 co-relation queries the response was YES. [2024-06-04 14:39:06,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3192 conditions, 552 events. 243/552 cut-off events. For 66600/66600 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2733 event pairs, 62 based on Foata normal form. 6/556 useless extension candidates. Maximal degree in co-relation 3114. Up to 436 conditions per place. [2024-06-04 14:39:06,749 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 85 selfloop transitions, 6 changer transitions 26/120 dead transitions. [2024-06-04 14:39:06,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 120 transitions, 901 flow [2024-06-04 14:39:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:06,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-04 14:39:06,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-04 14:39:06,750 INFO L175 Difference]: Start difference. First operand has 184 places, 101 transitions, 617 flow. Second operand 12 states and 134 transitions. [2024-06-04 14:39:06,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 120 transitions, 901 flow [2024-06-04 14:39:06,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 120 transitions, 865 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:39:06,834 INFO L231 Difference]: Finished difference. Result has 180 places, 90 transitions, 530 flow [2024-06-04 14:39:06,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=530, PETRI_PLACES=180, PETRI_TRANSITIONS=90} [2024-06-04 14:39:06,835 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-04 14:39:06,835 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 90 transitions, 530 flow [2024-06-04 14:39:06,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:06,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:06,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:06,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-04 14:39:06,835 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)] === [2024-06-04 14:39:06,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:06,835 INFO L85 PathProgramCache]: Analyzing trace with hash -261516250, now seen corresponding path program 6 times [2024-06-04 14:39:06,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:06,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494740820] [2024-06-04 14:39:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:06,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:08,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:08,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494740820] [2024-06-04 14:39:08,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494740820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:08,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:08,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:08,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18542535] [2024-06-04 14:39:08,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:08,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:08,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:08,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:08,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:08,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:08,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 90 transitions, 530 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:08,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:08,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:08,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:09,168 INFO L124 PetriNetUnfolderBase]: 220/499 cut-off events. [2024-06-04 14:39:09,168 INFO L125 PetriNetUnfolderBase]: For 62601/62601 co-relation queries the response was YES. [2024-06-04 14:39:09,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2954 conditions, 499 events. 220/499 cut-off events. For 62601/62601 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2416 event pairs, 62 based on Foata normal form. 6/503 useless extension candidates. Maximal degree in co-relation 2878. Up to 406 conditions per place. [2024-06-04 14:39:09,172 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 80 selfloop transitions, 10 changer transitions 12/105 dead transitions. [2024-06-04 14:39:09,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 105 transitions, 770 flow [2024-06-04 14:39:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:09,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 14:39:09,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:39:09,173 INFO L175 Difference]: Start difference. First operand has 180 places, 90 transitions, 530 flow. Second operand 12 states and 132 transitions. [2024-06-04 14:39:09,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 105 transitions, 770 flow [2024-06-04 14:39:09,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 105 transitions, 739 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-04 14:39:09,251 INFO L231 Difference]: Finished difference. Result has 164 places, 86 transitions, 503 flow [2024-06-04 14:39:09,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=503, PETRI_PLACES=164, PETRI_TRANSITIONS=86} [2024-06-04 14:39:09,252 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-04 14:39:09,252 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 86 transitions, 503 flow [2024-06-04 14:39:09,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:09,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:09,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:09,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-04 14:39:09,252 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)] === [2024-06-04 14:39:09,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:09,252 INFO L85 PathProgramCache]: Analyzing trace with hash -460962190, now seen corresponding path program 7 times [2024-06-04 14:39:09,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:09,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326150115] [2024-06-04 14:39:09,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:09,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:11,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:11,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326150115] [2024-06-04 14:39:11,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326150115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:11,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:11,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:11,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853275817] [2024-06-04 14:39:11,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:11,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:11,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:11,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:11,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:11,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:11,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 86 transitions, 503 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:11,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:11,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:11,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:11,684 INFO L124 PetriNetUnfolderBase]: 212/481 cut-off events. [2024-06-04 14:39:11,684 INFO L125 PetriNetUnfolderBase]: For 51522/51522 co-relation queries the response was YES. [2024-06-04 14:39:11,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2756 conditions, 481 events. 212/481 cut-off events. For 51522/51522 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2305 event pairs, 60 based on Foata normal form. 6/485 useless extension candidates. Maximal degree in co-relation 2687. Up to 388 conditions per place. [2024-06-04 14:39:11,688 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 75 selfloop transitions, 7 changer transitions 17/102 dead transitions. [2024-06-04 14:39:11,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 102 transitions, 739 flow [2024-06-04 14:39:11,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-04 14:39:11,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-04 14:39:11,689 INFO L175 Difference]: Start difference. First operand has 164 places, 86 transitions, 503 flow. Second operand 12 states and 131 transitions. [2024-06-04 14:39:11,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 102 transitions, 739 flow [2024-06-04 14:39:11,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 102 transitions, 707 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 14:39:11,751 INFO L231 Difference]: Finished difference. Result has 158 places, 80 transitions, 463 flow [2024-06-04 14:39:11,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=463, PETRI_PLACES=158, PETRI_TRANSITIONS=80} [2024-06-04 14:39:11,752 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-04 14:39:11,752 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 80 transitions, 463 flow [2024-06-04 14:39:11,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:11,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:11,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:11,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-04 14:39:11,753 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)] === [2024-06-04 14:39:11,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:11,753 INFO L85 PathProgramCache]: Analyzing trace with hash -207996206, now seen corresponding path program 8 times [2024-06-04 14:39:11,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:11,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126984053] [2024-06-04 14:39:11,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:11,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:13,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:13,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126984053] [2024-06-04 14:39:13,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126984053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:13,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:13,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:13,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519161050] [2024-06-04 14:39:13,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:13,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:13,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:13,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:13,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:13,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:13,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 80 transitions, 463 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:13,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:13,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:13,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:13,764 INFO L124 PetriNetUnfolderBase]: 199/452 cut-off events. [2024-06-04 14:39:13,764 INFO L125 PetriNetUnfolderBase]: For 46912/46916 co-relation queries the response was YES. [2024-06-04 14:39:13,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2571 conditions, 452 events. 199/452 cut-off events. For 46912/46916 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2121 event pairs, 66 based on Foata normal form. 10/460 useless extension candidates. Maximal degree in co-relation 2505. Up to 360 conditions per place. [2024-06-04 14:39:13,767 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 11 changer transitions 9/93 dead transitions. [2024-06-04 14:39:13,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 93 transitions, 673 flow [2024-06-04 14:39:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:39:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:39:13,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:39:13,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 14:39:13,767 INFO L175 Difference]: Start difference. First operand has 158 places, 80 transitions, 463 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:39:13,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 93 transitions, 673 flow [2024-06-04 14:39:13,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 93 transitions, 647 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 14:39:13,817 INFO L231 Difference]: Finished difference. Result has 147 places, 76 transitions, 442 flow [2024-06-04 14:39:13,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=442, PETRI_PLACES=147, PETRI_TRANSITIONS=76} [2024-06-04 14:39:13,818 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-04 14:39:13,818 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 76 transitions, 442 flow [2024-06-04 14:39:13,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:13,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:13,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:13,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-04 14:39:13,818 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)] === [2024-06-04 14:39:13,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:13,819 INFO L85 PathProgramCache]: Analyzing trace with hash -401935616, now seen corresponding path program 9 times [2024-06-04 14:39:13,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:13,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829674492] [2024-06-04 14:39:13,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:13,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:16,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:16,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829674492] [2024-06-04 14:39:16,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829674492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:16,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:16,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:16,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347375525] [2024-06-04 14:39:16,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:16,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:16,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:16,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:16,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:16,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:16,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 76 transitions, 442 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:16,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:16,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:16,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:16,884 INFO L124 PetriNetUnfolderBase]: 176/401 cut-off events. [2024-06-04 14:39:16,884 INFO L125 PetriNetUnfolderBase]: For 31168/31172 co-relation queries the response was YES. [2024-06-04 14:39:16,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2026 conditions, 401 events. 176/401 cut-off events. For 31168/31172 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1794 event pairs, 47 based on Foata normal form. 10/409 useless extension candidates. Maximal degree in co-relation 1965. Up to 317 conditions per place. [2024-06-04 14:39:16,887 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 68 selfloop transitions, 10 changer transitions 10/91 dead transitions. [2024-06-04 14:39:16,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 91 transitions, 652 flow [2024-06-04 14:39:16,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:16,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-04 14:39:16,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-04 14:39:16,888 INFO L175 Difference]: Start difference. First operand has 147 places, 76 transitions, 442 flow. Second operand 12 states and 130 transitions. [2024-06-04 14:39:16,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 91 transitions, 652 flow [2024-06-04 14:39:16,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 91 transitions, 622 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:39:16,928 INFO L231 Difference]: Finished difference. Result has 142 places, 73 transitions, 420 flow [2024-06-04 14:39:16,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=420, PETRI_PLACES=142, PETRI_TRANSITIONS=73} [2024-06-04 14:39:16,928 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-04 14:39:16,929 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 73 transitions, 420 flow [2024-06-04 14:39:16,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:16,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:16,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:16,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-04 14:39:16,929 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)] === [2024-06-04 14:39:16,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:16,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1231217092, now seen corresponding path program 10 times [2024-06-04 14:39:16,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:16,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210852645] [2024-06-04 14:39:16,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:16,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:18,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:18,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:18,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210852645] [2024-06-04 14:39:18,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210852645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:18,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:18,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:18,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705464610] [2024-06-04 14:39:18,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:18,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:18,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:18,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:18,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:19,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:19,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 73 transitions, 420 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:19,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:19,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:19,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:19,361 INFO L124 PetriNetUnfolderBase]: 169/388 cut-off events. [2024-06-04 14:39:19,361 INFO L125 PetriNetUnfolderBase]: For 27602/27602 co-relation queries the response was YES. [2024-06-04 14:39:19,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1929 conditions, 388 events. 169/388 cut-off events. For 27602/27602 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1718 event pairs, 45 based on Foata normal form. 6/392 useless extension candidates. Maximal degree in co-relation 1871. Up to 299 conditions per place. [2024-06-04 14:39:19,363 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 58 selfloop transitions, 3 changer transitions 25/89 dead transitions. [2024-06-04 14:39:19,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 89 transitions, 628 flow [2024-06-04 14:39:19,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:19,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-04 14:39:19,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-04 14:39:19,364 INFO L175 Difference]: Start difference. First operand has 142 places, 73 transitions, 420 flow. Second operand 12 states and 130 transitions. [2024-06-04 14:39:19,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 89 transitions, 628 flow [2024-06-04 14:39:19,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 89 transitions, 602 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:39:19,400 INFO L231 Difference]: Finished difference. Result has 137 places, 63 transitions, 354 flow [2024-06-04 14:39:19,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=354, PETRI_PLACES=137, PETRI_TRANSITIONS=63} [2024-06-04 14:39:19,400 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-04 14:39:19,401 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 63 transitions, 354 flow [2024-06-04 14:39:19,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:19,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:19,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:19,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-04 14:39:19,401 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)] === [2024-06-04 14:39:19,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:19,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1166351232, now seen corresponding path program 11 times [2024-06-04 14:39:19,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:19,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453411470] [2024-06-04 14:39:19,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:19,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:21,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:21,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453411470] [2024-06-04 14:39:21,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453411470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:21,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:21,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:21,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321939089] [2024-06-04 14:39:21,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:21,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:21,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:21,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:21,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:21,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:21,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 63 transitions, 354 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:21,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:21,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:21,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:21,685 INFO L124 PetriNetUnfolderBase]: 150/342 cut-off events. [2024-06-04 14:39:21,686 INFO L125 PetriNetUnfolderBase]: For 25284/25288 co-relation queries the response was YES. [2024-06-04 14:39:21,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1748 conditions, 342 events. 150/342 cut-off events. For 25284/25288 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1465 event pairs, 45 based on Foata normal form. 10/351 useless extension candidates. Maximal degree in co-relation 1692. Up to 214 conditions per place. [2024-06-04 14:39:21,687 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 42 selfloop transitions, 20 changer transitions 11/76 dead transitions. [2024-06-04 14:39:21,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 76 transitions, 528 flow [2024-06-04 14:39:21,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:21,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:21,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-04 14:39:21,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-04 14:39:21,688 INFO L175 Difference]: Start difference. First operand has 137 places, 63 transitions, 354 flow. Second operand 12 states and 129 transitions. [2024-06-04 14:39:21,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 76 transitions, 528 flow [2024-06-04 14:39:21,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 76 transitions, 502 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-04 14:39:21,710 INFO L231 Difference]: Finished difference. Result has 120 places, 59 transitions, 350 flow [2024-06-04 14:39:21,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=350, PETRI_PLACES=120, PETRI_TRANSITIONS=59} [2024-06-04 14:39:21,710 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-04 14:39:21,711 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 59 transitions, 350 flow [2024-06-04 14:39:21,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:21,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:21,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:21,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-04 14:39:21,711 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)] === [2024-06-04 14:39:21,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:21,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1724296252, now seen corresponding path program 12 times [2024-06-04 14:39:21,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:21,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144068230] [2024-06-04 14:39:21,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:21,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:23,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:23,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144068230] [2024-06-04 14:39:23,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144068230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:23,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:23,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:23,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927747923] [2024-06-04 14:39:23,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:23,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:23,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:23,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:23,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:23,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:23,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 59 transitions, 350 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:23,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:23,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:23,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:24,277 INFO L124 PetriNetUnfolderBase]: 127/291 cut-off events. [2024-06-04 14:39:24,277 INFO L125 PetriNetUnfolderBase]: For 13696/13700 co-relation queries the response was YES. [2024-06-04 14:39:24,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 291 events. 127/291 cut-off events. For 13696/13700 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1175 event pairs, 32 based on Foata normal form. 10/300 useless extension candidates. Maximal degree in co-relation 1240. Up to 171 conditions per place. [2024-06-04 14:39:24,279 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 39 selfloop transitions, 20 changer transitions 10/72 dead transitions. [2024-06-04 14:39:24,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 72 transitions, 516 flow [2024-06-04 14:39:24,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:24,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-04 14:39:24,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-04 14:39:24,280 INFO L175 Difference]: Start difference. First operand has 120 places, 59 transitions, 350 flow. Second operand 12 states and 127 transitions. [2024-06-04 14:39:24,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 72 transitions, 516 flow [2024-06-04 14:39:24,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 72 transitions, 468 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:39:24,291 INFO L231 Difference]: Finished difference. Result has 114 places, 56 transitions, 329 flow [2024-06-04 14:39:24,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=329, PETRI_PLACES=114, PETRI_TRANSITIONS=56} [2024-06-04 14:39:24,291 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-04 14:39:24,291 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 56 transitions, 329 flow [2024-06-04 14:39:24,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:24,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:24,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:24,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-04 14:39:24,292 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)] === [2024-06-04 14:39:24,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:24,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1729802782, now seen corresponding path program 13 times [2024-06-04 14:39:24,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:24,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140465932] [2024-06-04 14:39:24,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:24,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:24,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:26,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:26,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140465932] [2024-06-04 14:39:26,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140465932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:26,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:26,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:26,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026805554] [2024-06-04 14:39:26,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:26,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:26,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:26,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:26,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:26,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:26,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 56 transitions, 329 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:26,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:26,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:26,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:26,774 INFO L124 PetriNetUnfolderBase]: 120/278 cut-off events. [2024-06-04 14:39:26,774 INFO L125 PetriNetUnfolderBase]: For 11704/11704 co-relation queries the response was YES. [2024-06-04 14:39:26,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 278 events. 120/278 cut-off events. For 11704/11704 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1092 event pairs, 28 based on Foata normal form. 6/283 useless extension candidates. Maximal degree in co-relation 1164. Up to 147 conditions per place. [2024-06-04 14:39:26,776 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 38 selfloop transitions, 17 changer transitions 12/70 dead transitions. [2024-06-04 14:39:26,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 70 transitions, 493 flow [2024-06-04 14:39:26,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:26,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:26,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-04 14:39:26,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:39:26,777 INFO L175 Difference]: Start difference. First operand has 114 places, 56 transitions, 329 flow. Second operand 12 states and 128 transitions. [2024-06-04 14:39:26,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 70 transitions, 493 flow [2024-06-04 14:39:26,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 70 transitions, 447 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:39:26,786 INFO L231 Difference]: Finished difference. Result has 108 places, 50 transitions, 292 flow [2024-06-04 14:39:26,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=292, PETRI_PLACES=108, PETRI_TRANSITIONS=50} [2024-06-04 14:39:26,786 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-04 14:39:26,786 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 50 transitions, 292 flow [2024-06-04 14:39:26,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:26,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:26,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:26,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-04 14:39:26,787 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)] === [2024-06-04 14:39:26,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:26,787 INFO L85 PathProgramCache]: Analyzing trace with hash -511608968, now seen corresponding path program 14 times [2024-06-04 14:39:26,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:26,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009911119] [2024-06-04 14:39:26,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:26,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:28,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:28,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009911119] [2024-06-04 14:39:28,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009911119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:28,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:28,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:28,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512083396] [2024-06-04 14:39:28,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:28,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:28,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:28,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:28,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:28,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:28,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 50 transitions, 292 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:28,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:28,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:28,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:29,114 INFO L124 PetriNetUnfolderBase]: 107/249 cut-off events. [2024-06-04 14:39:29,114 INFO L125 PetriNetUnfolderBase]: For 10398/10398 co-relation queries the response was YES. [2024-06-04 14:39:29,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 249 events. 107/249 cut-off events. For 10398/10398 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 938 event pairs, 30 based on Foata normal form. 6/254 useless extension candidates. Maximal degree in co-relation 1060. Up to 158 conditions per place. [2024-06-04 14:39:29,115 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 35 selfloop transitions, 14 changer transitions 11/63 dead transitions. [2024-06-04 14:39:29,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 63 transitions, 440 flow [2024-06-04 14:39:29,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:29,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:29,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 14:39:29,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 14:39:29,116 INFO L175 Difference]: Start difference. First operand has 108 places, 50 transitions, 292 flow. Second operand 12 states and 132 transitions. [2024-06-04 14:39:29,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 63 transitions, 440 flow [2024-06-04 14:39:29,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 63 transitions, 394 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-04 14:39:29,123 INFO L231 Difference]: Finished difference. Result has 98 places, 46 transitions, 258 flow [2024-06-04 14:39:29,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=258, PETRI_PLACES=98, PETRI_TRANSITIONS=46} [2024-06-04 14:39:29,123 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-04 14:39:29,124 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 46 transitions, 258 flow [2024-06-04 14:39:29,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:29,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:29,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:29,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-04 14:39:29,124 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)] === [2024-06-04 14:39:29,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:29,124 INFO L85 PathProgramCache]: Analyzing trace with hash -989412216, now seen corresponding path program 15 times [2024-06-04 14:39:29,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:29,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030970981] [2024-06-04 14:39:29,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:29,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:30,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:30,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:30,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030970981] [2024-06-04 14:39:30,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030970981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:30,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:30,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:30,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166325411] [2024-06-04 14:39:30,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:30,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:30,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:30,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:30,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:30,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:30,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 46 transitions, 258 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:30,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:30,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:30,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:31,237 INFO L124 PetriNetUnfolderBase]: 84/198 cut-off events. [2024-06-04 14:39:31,237 INFO L125 PetriNetUnfolderBase]: For 5056/5056 co-relation queries the response was YES. [2024-06-04 14:39:31,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 198 events. 84/198 cut-off events. For 5056/5056 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 670 event pairs, 17 based on Foata normal form. 6/203 useless extension candidates. Maximal degree in co-relation 698. Up to 133 conditions per place. [2024-06-04 14:39:31,238 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 34 selfloop transitions, 4 changer transitions 18/59 dead transitions. [2024-06-04 14:39:31,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 59 transitions, 398 flow [2024-06-04 14:39:31,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-04 14:39:31,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-04 14:39:31,239 INFO L175 Difference]: Start difference. First operand has 98 places, 46 transitions, 258 flow. Second operand 12 states and 125 transitions. [2024-06-04 14:39:31,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 59 transitions, 398 flow [2024-06-04 14:39:31,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 59 transitions, 362 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:39:31,243 INFO L231 Difference]: Finished difference. Result has 92 places, 39 transitions, 202 flow [2024-06-04 14:39:31,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=202, PETRI_PLACES=92, PETRI_TRANSITIONS=39} [2024-06-04 14:39:31,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-04 14:39:31,243 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 39 transitions, 202 flow [2024-06-04 14:39:31,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:31,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:31,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:31,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-04 14:39:31,244 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)] === [2024-06-04 14:39:31,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:31,244 INFO L85 PathProgramCache]: Analyzing trace with hash -705548378, now seen corresponding path program 16 times [2024-06-04 14:39:31,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:31,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015471521] [2024-06-04 14:39:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:31,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:32,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:32,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015471521] [2024-06-04 14:39:32,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015471521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:32,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:32,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:32,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892082485] [2024-06-04 14:39:32,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:32,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:32,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:32,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:32,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:32,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:32,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 39 transitions, 202 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:32,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:32,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:32,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:33,237 INFO L124 PetriNetUnfolderBase]: 73/171 cut-off events. [2024-06-04 14:39:33,238 INFO L125 PetriNetUnfolderBase]: For 4038/4038 co-relation queries the response was YES. [2024-06-04 14:39:33,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 171 events. 73/171 cut-off events. For 4038/4038 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 540 event pairs, 17 based on Foata normal form. 6/176 useless extension candidates. Maximal degree in co-relation 588. Up to 90 conditions per place. [2024-06-04 14:39:33,239 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 27 selfloop transitions, 12 changer transitions 10/52 dead transitions. [2024-06-04 14:39:33,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 52 transitions, 328 flow [2024-06-04 14:39:33,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:33,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:33,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-04 14:39:33,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-04 14:39:33,239 INFO L175 Difference]: Start difference. First operand has 92 places, 39 transitions, 202 flow. Second operand 12 states and 125 transitions. [2024-06-04 14:39:33,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 52 transitions, 328 flow [2024-06-04 14:39:33,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 52 transitions, 310 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-04 14:39:33,242 INFO L231 Difference]: Finished difference. Result has 81 places, 36 transitions, 197 flow [2024-06-04 14:39:33,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=197, PETRI_PLACES=81, PETRI_TRANSITIONS=36} [2024-06-04 14:39:33,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-04 14:39:33,243 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 36 transitions, 197 flow [2024-06-04 14:39:33,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:33,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:33,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:33,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-04 14:39:33,243 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)] === [2024-06-04 14:39:33,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:33,244 INFO L85 PathProgramCache]: Analyzing trace with hash -711054908, now seen corresponding path program 17 times [2024-06-04 14:39:33,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:33,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977594467] [2024-06-04 14:39:33,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:33,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:35,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:35,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977594467] [2024-06-04 14:39:35,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977594467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:35,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:35,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:35,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736932979] [2024-06-04 14:39:35,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:35,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:35,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:35,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:35,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:35,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:35,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 36 transitions, 197 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:35,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:35,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:35,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:35,468 INFO L124 PetriNetUnfolderBase]: 66/158 cut-off events. [2024-06-04 14:39:35,468 INFO L125 PetriNetUnfolderBase]: For 2916/2916 co-relation queries the response was YES. [2024-06-04 14:39:35,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 158 events. 66/158 cut-off events. For 2916/2916 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 480 event pairs, 15 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 544. Up to 72 conditions per place. [2024-06-04 14:39:35,469 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 23 selfloop transitions, 8 changer transitions 16/50 dead transitions. [2024-06-04 14:39:35,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 50 transitions, 321 flow [2024-06-04 14:39:35,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:35,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:35,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-04 14:39:35,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-04 14:39:35,470 INFO L175 Difference]: Start difference. First operand has 81 places, 36 transitions, 197 flow. Second operand 12 states and 125 transitions. [2024-06-04 14:39:35,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 50 transitions, 321 flow [2024-06-04 14:39:35,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 50 transitions, 291 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:39:35,472 INFO L231 Difference]: Finished difference. Result has 77 places, 30 transitions, 159 flow [2024-06-04 14:39:35,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=159, PETRI_PLACES=77, PETRI_TRANSITIONS=30} [2024-06-04 14:39:35,472 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-04 14:39:35,472 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 30 transitions, 159 flow [2024-06-04 14:39:35,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:35,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:35,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:35,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-04 14:39:35,472 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)] === [2024-06-04 14:39:35,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:35,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1891877256, now seen corresponding path program 18 times [2024-06-04 14:39:35,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:35,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367616010] [2024-06-04 14:39:35,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:35,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:37,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:37,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367616010] [2024-06-04 14:39:37,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367616010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:37,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:37,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:37,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503740566] [2024-06-04 14:39:37,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:37,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:37,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:37,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:37,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:38,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:38,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 30 transitions, 159 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:38,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:38,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:38,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:38,247 INFO L124 PetriNetUnfolderBase]: 53/129 cut-off events. [2024-06-04 14:39:38,247 INFO L125 PetriNetUnfolderBase]: For 2402/2402 co-relation queries the response was YES. [2024-06-04 14:39:38,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 129 events. 53/129 cut-off events. For 2402/2402 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 346 event pairs, 15 based on Foata normal form. 6/134 useless extension candidates. Maximal degree in co-relation 448. Up to 62 conditions per place. [2024-06-04 14:39:38,248 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 20 selfloop transitions, 10 changer transitions 10/43 dead transitions. [2024-06-04 14:39:38,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 43 transitions, 267 flow [2024-06-04 14:39:38,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:38,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:38,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-04 14:39:38,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-04 14:39:38,248 INFO L175 Difference]: Start difference. First operand has 77 places, 30 transitions, 159 flow. Second operand 12 states and 122 transitions. [2024-06-04 14:39:38,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 43 transitions, 267 flow [2024-06-04 14:39:38,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 43 transitions, 239 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 14:39:38,250 INFO L231 Difference]: Finished difference. Result has 67 places, 27 transitions, 140 flow [2024-06-04 14:39:38,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=140, PETRI_PLACES=67, PETRI_TRANSITIONS=27} [2024-06-04 14:39:38,250 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-06-04 14:39:38,251 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 27 transitions, 140 flow [2024-06-04 14:39:38,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:38,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:38,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:38,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-04 14:39:38,251 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)] === [2024-06-04 14:39:38,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:38,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1891733106, now seen corresponding path program 19 times [2024-06-04 14:39:38,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:38,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610424640] [2024-06-04 14:39:38,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:38,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:40,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:40,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610424640] [2024-06-04 14:39:40,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610424640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:40,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:40,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:40,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140864038] [2024-06-04 14:39:40,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:40,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:40,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:40,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:40,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:40,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:40,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 27 transitions, 140 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:40,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:40,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:40,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:40,623 INFO L124 PetriNetUnfolderBase]: 46/116 cut-off events. [2024-06-04 14:39:40,623 INFO L125 PetriNetUnfolderBase]: For 1356/1356 co-relation queries the response was YES. [2024-06-04 14:39:40,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 116 events. 46/116 cut-off events. For 1356/1356 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 285 event pairs, 4 based on Foata normal form. 6/121 useless extension candidates. Maximal degree in co-relation 386. Up to 38 conditions per place. [2024-06-04 14:39:40,624 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 19 selfloop transitions, 9 changer transitions 10/41 dead transitions. [2024-06-04 14:39:40,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 41 transitions, 246 flow [2024-06-04 14:39:40,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:40,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-04 14:39:40,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-04 14:39:40,625 INFO L175 Difference]: Start difference. First operand has 67 places, 27 transitions, 140 flow. Second operand 12 states and 121 transitions. [2024-06-04 14:39:40,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 41 transitions, 246 flow [2024-06-04 14:39:40,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 41 transitions, 220 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:39:40,627 INFO L231 Difference]: Finished difference. Result has 63 places, 23 transitions, 116 flow [2024-06-04 14:39:40,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=116, PETRI_PLACES=63, PETRI_TRANSITIONS=23} [2024-06-04 14:39:40,627 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-04 14:39:40,627 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 23 transitions, 116 flow [2024-06-04 14:39:40,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:40,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:40,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:40,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-04 14:39:40,628 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)] === [2024-06-04 14:39:40,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:40,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2091179046, now seen corresponding path program 20 times [2024-06-04 14:39:40,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:40,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122890875] [2024-06-04 14:39:40,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:40,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:42,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:42,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122890875] [2024-06-04 14:39:42,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122890875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:42,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:42,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:39:42,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861747685] [2024-06-04 14:39:42,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:42,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:39:42,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:42,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:39:42,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:39:42,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-04 14:39:42,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 23 transitions, 116 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:42,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:42,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-04 14:39:42,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:42,801 INFO L124 PetriNetUnfolderBase]: 20/60 cut-off events. [2024-06-04 14:39:42,801 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-06-04 14:39:42,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 60 events. 20/60 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 6/65 useless extension candidates. Maximal degree in co-relation 164. Up to 24 conditions per place. [2024-06-04 14:39:42,801 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-04 14:39:42,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 31 transitions, 162 flow [2024-06-04 14:39:42,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:39:42,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:39:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-04 14:39:42,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2942708333333333 [2024-06-04 14:39:42,802 INFO L175 Difference]: Start difference. First operand has 63 places, 23 transitions, 116 flow. Second operand 12 states and 113 transitions. [2024-06-04 14:39:42,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 31 transitions, 162 flow [2024-06-04 14:39:42,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 31 transitions, 124 flow, removed 1 selfloop flow, removed 19 redundant places. [2024-06-04 14:39:42,803 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-06-04 14:39:42,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-06-04 14:39:42,803 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-04 14:39:42,803 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-06-04 14:39:42,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:42,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 14:39:42,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 14:39:42,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 14:39:42,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 14:39:42,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-04 14:39:42,806 INFO L445 BasicCegarLoop]: Path program histogram: [37, 32, 20, 19, 17, 16, 15, 10, 7, 6, 6, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:42,809 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 14:39:42,809 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 14:39:42,822 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 14:39:42,822 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 14:39:42,823 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 02:39:42 BasicIcfg [2024-06-04 14:39:42,823 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 14:39:42,823 INFO L158 Benchmark]: Toolchain (without parser) took 447406.11ms. Allocated memory was 151.0MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 86.2MB in the beginning and 991.8MB in the end (delta: -905.6MB). Peak memory consumption was 250.1MB. Max. memory is 16.1GB. [2024-06-04 14:39:42,823 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 110.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:39:42,824 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 92.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:39:42,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 538.75ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 86.0MB in the beginning and 161.0MB in the end (delta: -75.0MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2024-06-04 14:39:42,824 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.53ms. Allocated memory is still 203.4MB. Free memory was 161.0MB in the beginning and 157.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 14:39:42,825 INFO L158 Benchmark]: Boogie Preprocessor took 47.02ms. Allocated memory is still 203.4MB. Free memory was 157.8MB in the beginning and 154.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-04 14:39:42,825 INFO L158 Benchmark]: RCFGBuilder took 684.96ms. Allocated memory is still 203.4MB. Free memory was 154.7MB in the beginning and 97.0MB in the end (delta: 57.7MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2024-06-04 14:39:42,825 INFO L158 Benchmark]: TraceAbstraction took 446076.40ms. Allocated memory was 203.4MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 95.9MB in the beginning and 991.8MB in the end (delta: -895.9MB). Peak memory consumption was 205.1MB. Max. memory is 16.1GB. [2024-06-04 14:39:42,826 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 110.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 92.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 538.75ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 86.0MB in the beginning and 161.0MB in the end (delta: -75.0MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.53ms. Allocated memory is still 203.4MB. Free memory was 161.0MB in the beginning and 157.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.02ms. Allocated memory is still 203.4MB. Free memory was 157.8MB in the beginning and 154.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 684.96ms. Allocated memory is still 203.4MB. Free memory was 154.7MB in the beginning and 97.0MB in the end (delta: 57.7MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * TraceAbstraction took 446076.40ms. Allocated memory was 203.4MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 95.9MB in the beginning and 991.8MB in the end (delta: -895.9MB). Peak memory consumption was 205.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 829]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 830]: 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, 51 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: 446.0s, OverallIterations: 220, TraceHistogramMax: 1, PathProgramHistogramMax: 37, EmptinessCheckTime: 0.0s, AutomataDifference: 155.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14593 SdHoareTripleChecker+Valid, 60.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12538 mSDsluCounter, 5108 SdHoareTripleChecker+Invalid, 52.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4505 mSDsCounter, 2507 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 101216 IncrementalHoareTripleChecker+Invalid, 103723 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2507 mSolverCounterUnsat, 603 mSDtfsCounter, 101216 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2614 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2595 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5684 ImplicationChecksByTransitivity, 81.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3093occurred in iteration=117, InterpolantAutomatonStates: 2257, 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, 286.2s InterpolantComputationTime, 3869 NumberOfCodeBlocks, 3869 NumberOfCodeBlocksAsserted, 220 NumberOfCheckSat, 3649 ConstructedInterpolants, 0 QuantifiedInterpolants, 191994 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 220 InterpolantComputations, 220 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-04 14:39:42,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE