./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix009.oepc.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/mix009.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix009.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 14:39:20,974 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:39:21,042 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:39:21,046 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:39:21,047 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:39:21,070 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:39:21,071 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:39:21,072 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:39:21,072 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:39:21,075 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:39:21,076 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:39:21,076 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:39:21,076 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:39:21,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:39:21,078 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:39:21,078 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:39:21,078 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:39:21,078 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:39:21,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:39:21,079 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:39:21,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:39:21,080 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:39:21,080 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:39:21,080 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:39:21,080 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:39:21,081 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:39:21,081 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:39:21,081 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:39:21,082 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:39:21,082 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:39:21,083 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:39:21,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:39:21,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:39:21,084 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:39:21,084 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:39:21,084 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:39:21,084 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:39:21,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:39:21,085 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:39:21,085 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:39:21,085 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:39:21,086 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:39:21,086 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:39:21,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:39:21,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:39:21,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:39:21,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:39:21,323 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:39:21,323 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:39:21,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-04 14:39:22,355 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:39:22,583 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:39:22,585 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-04 14:39:22,601 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d2c3cb0f/6c09604ddb02484d876a7fd37bb9e792/FLAGb89c0c15d [2024-06-04 14:39:22,615 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d2c3cb0f/6c09604ddb02484d876a7fd37bb9e792 [2024-06-04 14:39:22,617 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:39:22,618 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:39:22,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix009.oepc.yml/witness.yml [2024-06-04 14:39:22,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:39:22,745 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:39:22,746 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:39:22,747 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:39:22,750 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:39:22,751 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:39:22" (1/2) ... [2024-06-04 14:39:22,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea21b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:39:22, skipping insertion in model container [2024-06-04 14:39:22,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:39:22" (1/2) ... [2024-06-04 14:39:22,753 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6404d5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:39:22, skipping insertion in model container [2024-06-04 14:39:22,753 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:39:22" (2/2) ... [2024-06-04 14:39:22,754 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea21b17 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:22, skipping insertion in model container [2024-06-04 14:39:22,754 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:39:22" (2/2) ... [2024-06-04 14:39:22,754 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:39:22,855 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:39:22,856 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((((! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1))) [2024-06-04 14:39:22,862 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((((! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1))) [2024-06-04 14:39:22,866 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:39:22,867 INFO L106 edCorrectnessWitness]: ghost_update [L823-L823] multithreaded = 1; [2024-06-04 14:39:22,929 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:39:23,277 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:39:23,286 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:39:23,381 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:39:23,411 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:39:23,411 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:39:23 WrapperNode [2024-06-04 14:39:23,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:39:23,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:39:23,413 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:39:23,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:39:23,418 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 02:39:23" (1/1) ... [2024-06-04 14:39:23,432 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 02:39:23" (1/1) ... [2024-06-04 14:39:23,454 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 122 [2024-06-04 14:39:23,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:39:23,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:39:23,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:39:23,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:39:23,465 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 02:39:23" (1/1) ... [2024-06-04 14:39:23,465 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 02:39:23" (1/1) ... [2024-06-04 14:39:23,468 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 02:39:23" (1/1) ... [2024-06-04 14:39:23,480 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 14:39:23,481 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 02:39:23" (1/1) ... [2024-06-04 14:39:23,481 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 02:39:23" (1/1) ... [2024-06-04 14:39:23,487 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 02:39:23" (1/1) ... [2024-06-04 14:39:23,488 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 02:39:23" (1/1) ... [2024-06-04 14:39:23,490 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 02:39:23" (1/1) ... [2024-06-04 14:39:23,491 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 02:39:23" (1/1) ... [2024-06-04 14:39:23,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:39:23,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:39:23,494 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:39:23,494 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:39:23,494 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 02:39:23" (1/1) ... [2024-06-04 14:39:23,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:39:23,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:39:23,547 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 14:39:23,550 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 14:39:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:39:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:39:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 14:39:23,607 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 14:39:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 14:39:23,607 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 14:39:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:39:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:39:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:39:23,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:39:23,609 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 14:39:23,747 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:39:23,749 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:39:24,005 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:39:24,005 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:39:24,203 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:39:24,203 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 14:39:24,205 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:39:24 BoogieIcfgContainer [2024-06-04 14:39:24,205 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:39:24,207 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:39:24,208 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:39:24,210 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:39:24,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:39:22" (1/4) ... [2024-06-04 14:39:24,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1bc1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:39:24, skipping insertion in model container [2024-06-04 14:39:24,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:39:22" (2/4) ... [2024-06-04 14:39:24,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1bc1fa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:39:24, skipping insertion in model container [2024-06-04 14:39:24,215 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 02:39:23" (3/4) ... [2024-06-04 14:39:24,216 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1bc1fa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:39:24, skipping insertion in model container [2024-06-04 14:39:24,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:39:24" (4/4) ... [2024-06-04 14:39:24,217 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.oepc.i [2024-06-04 14:39:24,231 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:39:24,231 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 14:39:24,231 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:39:24,277 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 14:39:24,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 74 flow [2024-06-04 14:39:24,335 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-04 14:39:24,336 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:39:24,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 14:39:24,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 74 flow [2024-06-04 14:39:24,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-06-04 14:39:24,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:39:24,359 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;@635857d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:39:24,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 14:39:24,363 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:39:24,363 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 14:39:24,364 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:39:24,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:24,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 14:39:24,365 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 14:39:24,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:24,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1828167494, now seen corresponding path program 1 times [2024-06-04 14:39:24,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:24,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593351600] [2024-06-04 14:39:24,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:24,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:25,216 INFO 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 14:39:25,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:25,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593351600] [2024-06-04 14:39:25,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593351600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:25,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:25,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 14:39:25,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154664894] [2024-06-04 14:39:25,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:25,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:39:25,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:25,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:39:25,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:39:25,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-04 14:39:25,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 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 14:39:25,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:25,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-04 14:39:25,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:25,423 INFO L124 PetriNetUnfolderBase]: 162/315 cut-off events. [2024-06-04 14:39:25,423 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-04 14:39:25,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 315 events. 162/315 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1246 event pairs, 97 based on Foata normal form. 1/306 useless extension candidates. Maximal degree in co-relation 614. Up to 288 conditions per place. [2024-06-04 14:39:25,430 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 23 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-04 14:39:25,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 123 flow [2024-06-04 14:39:25,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:39:25,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:39:25,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-06-04 14:39:25,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5858585858585859 [2024-06-04 14:39:25,442 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 3 states and 58 transitions. [2024-06-04 14:39:25,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 123 flow [2024-06-04 14:39:25,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 14:39:25,446 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 75 flow [2024-06-04 14:39:25,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-04 14:39:25,451 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-04 14:39:25,451 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 75 flow [2024-06-04 14:39:25,452 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 14:39:25,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:25,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:25,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:39:25,453 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 14:39:25,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:25,453 INFO L85 PathProgramCache]: Analyzing trace with hash 228048693, now seen corresponding path program 1 times [2024-06-04 14:39:25,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:25,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025556813] [2024-06-04 14:39:25,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:25,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:25,971 INFO 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 14:39:25,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:25,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025556813] [2024-06-04 14:39:25,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025556813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:25,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:25,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:39:25,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371994082] [2024-06-04 14:39:25,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:25,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:39:25,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:25,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:39:25,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:39:26,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-04 14:39:26,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:26,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:26,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-04 14:39:26,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:26,122 INFO L124 PetriNetUnfolderBase]: 159/310 cut-off events. [2024-06-04 14:39:26,123 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-06-04 14:39:26,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 310 events. 159/310 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1214 event pairs, 79 based on Foata normal form. 2/307 useless extension candidates. Maximal degree in co-relation 685. Up to 274 conditions per place. [2024-06-04 14:39:26,128 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 27 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-04 14:39:26,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 165 flow [2024-06-04 14:39:26,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:39:26,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:39:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-06-04 14:39:26,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-06-04 14:39:26,131 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 75 flow. Second operand 4 states and 74 transitions. [2024-06-04 14:39:26,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 165 flow [2024-06-04 14:39:26,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 14:39:26,136 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 99 flow [2024-06-04 14:39:26,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-04 14:39:26,136 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-04 14:39:26,137 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 99 flow [2024-06-04 14:39:26,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:26,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:26,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:26,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:39:26,138 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 14:39:26,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:26,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1541873971, now seen corresponding path program 1 times [2024-06-04 14:39:26,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:26,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379861213] [2024-06-04 14:39:26,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:26,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:26,708 INFO 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 14:39:26,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:26,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379861213] [2024-06-04 14:39:26,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379861213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:26,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:26,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:39:26,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102397939] [2024-06-04 14:39:26,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:26,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:39:26,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:26,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:39:26,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:39:26,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-04 14:39:26,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:26,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:26,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-04 14:39:26,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:26,851 INFO L124 PetriNetUnfolderBase]: 187/360 cut-off events. [2024-06-04 14:39:26,851 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2024-06-04 14:39:26,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 360 events. 187/360 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1392 event pairs, 83 based on Foata normal form. 2/361 useless extension candidates. Maximal degree in co-relation 878. Up to 313 conditions per place. [2024-06-04 14:39:26,853 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 32 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-04 14:39:26,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 215 flow [2024-06-04 14:39:26,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:39:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:39:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-06-04 14:39:26,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212121212121212 [2024-06-04 14:39:26,855 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 99 flow. Second operand 5 states and 86 transitions. [2024-06-04 14:39:26,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 215 flow [2024-06-04 14:39:26,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 206 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 14:39:26,857 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 123 flow [2024-06-04 14:39:26,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-04 14:39:26,857 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-04 14:39:26,857 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 123 flow [2024-06-04 14:39:26,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:26,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:26,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:26,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:39:26,858 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:39:26,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:26,859 INFO L85 PathProgramCache]: Analyzing trace with hash -553452156, now seen corresponding path program 1 times [2024-06-04 14:39:26,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:26,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395355473] [2024-06-04 14:39:26,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:26,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:27,371 INFO 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 14:39:27,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:27,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395355473] [2024-06-04 14:39:27,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395355473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:27,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:27,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:39:27,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234843307] [2024-06-04 14:39:27,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:27,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:39:27,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:27,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:39:27,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:39:27,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-04 14:39:27,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:27,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:27,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-04 14:39:27,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:27,507 INFO L124 PetriNetUnfolderBase]: 184/357 cut-off events. [2024-06-04 14:39:27,507 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2024-06-04 14:39:27,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 357 events. 184/357 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1364 event pairs, 65 based on Foata normal form. 2/358 useless extension candidates. Maximal degree in co-relation 948. Up to 299 conditions per place. [2024-06-04 14:39:27,509 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 36 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2024-06-04 14:39:27,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 263 flow [2024-06-04 14:39:27,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:39:27,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:39:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-04 14:39:27,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51010101010101 [2024-06-04 14:39:27,511 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 123 flow. Second operand 6 states and 101 transitions. [2024-06-04 14:39:27,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 263 flow [2024-06-04 14:39:27,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 248 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 14:39:27,513 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 147 flow [2024-06-04 14:39:27,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-06-04 14:39:27,514 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2024-06-04 14:39:27,514 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 147 flow [2024-06-04 14:39:27,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:27,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:27,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:27,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 14:39:27,515 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:39:27,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:27,515 INFO L85 PathProgramCache]: Analyzing trace with hash -190316767, now seen corresponding path program 1 times [2024-06-04 14:39:27,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:27,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650254905] [2024-06-04 14:39:27,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:27,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:28,007 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 14:39:28,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:28,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650254905] [2024-06-04 14:39:28,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650254905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:28,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:28,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:39:28,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654761041] [2024-06-04 14:39:28,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:28,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:39:28,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:28,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:39:28,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:39:28,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:39:28,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:28,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:28,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:39:28,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:28,290 INFO L124 PetriNetUnfolderBase]: 230/424 cut-off events. [2024-06-04 14:39:28,290 INFO L125 PetriNetUnfolderBase]: For 639/639 co-relation queries the response was YES. [2024-06-04 14:39:28,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 424 events. 230/424 cut-off events. For 639/639 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1588 event pairs, 100 based on Foata normal form. 1/424 useless extension candidates. Maximal degree in co-relation 1230. Up to 402 conditions per place. [2024-06-04 14:39:28,293 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 30 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2024-06-04 14:39:28,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 237 flow [2024-06-04 14:39:28,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:39:28,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:39:28,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-06-04 14:39:28,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-04 14:39:28,295 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 147 flow. Second operand 5 states and 67 transitions. [2024-06-04 14:39:28,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 237 flow [2024-06-04 14:39:28,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 216 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 14:39:28,300 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 153 flow [2024-06-04 14:39:28,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-06-04 14:39:28,304 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2024-06-04 14:39:28,304 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 153 flow [2024-06-04 14:39:28,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:28,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:28,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:28,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 14:39:28,306 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:39:28,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:28,307 INFO L85 PathProgramCache]: Analyzing trace with hash 708445859, now seen corresponding path program 1 times [2024-06-04 14:39:28,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:28,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137853758] [2024-06-04 14:39:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:28,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:29,148 INFO 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 14:39:29,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:29,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137853758] [2024-06-04 14:39:29,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137853758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:29,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:29,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:39:29,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431853693] [2024-06-04 14:39:29,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:29,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:39:29,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:29,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:39:29,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:39:29,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 14:39:29,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 153 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:29,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:29,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 14:39:29,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:29,370 INFO L124 PetriNetUnfolderBase]: 223/415 cut-off events. [2024-06-04 14:39:29,371 INFO L125 PetriNetUnfolderBase]: For 887/887 co-relation queries the response was YES. [2024-06-04 14:39:29,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1280 conditions, 415 events. 223/415 cut-off events. For 887/887 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1547 event pairs, 58 based on Foata normal form. 2/416 useless extension candidates. Maximal degree in co-relation 1259. Up to 338 conditions per place. [2024-06-04 14:39:29,373 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 46 selfloop transitions, 13 changer transitions 0/63 dead transitions. [2024-06-04 14:39:29,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 349 flow [2024-06-04 14:39:29,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:39:29,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:39:29,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-04 14:39:29,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-04 14:39:29,375 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 153 flow. Second operand 8 states and 124 transitions. [2024-06-04 14:39:29,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 349 flow [2024-06-04 14:39:29,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 63 transitions, 338 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 14:39:29,377 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 202 flow [2024-06-04 14:39:29,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=202, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-06-04 14:39:29,378 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2024-06-04 14:39:29,378 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 202 flow [2024-06-04 14:39:29,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:29,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:29,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:29,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 14:39:29,379 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 14:39:29,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:29,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1623619635, now seen corresponding path program 1 times [2024-06-04 14:39:29,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:29,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789085579] [2024-06-04 14:39:29,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:29,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:29,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:29,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789085579] [2024-06-04 14:39:29,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789085579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:29,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:29,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:39:29,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253499687] [2024-06-04 14:39:29,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:29,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:39:29,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:29,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:39:29,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:39:30,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:39:30,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 202 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 14:39:30,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:30,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:39:30,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:30,248 INFO L124 PetriNetUnfolderBase]: 220/409 cut-off events. [2024-06-04 14:39:30,249 INFO L125 PetriNetUnfolderBase]: For 1121/1121 co-relation queries the response was YES. [2024-06-04 14:39:30,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 409 events. 220/409 cut-off events. For 1121/1121 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1490 event pairs, 58 based on Foata normal form. 3/411 useless extension candidates. Maximal degree in co-relation 1365. Up to 379 conditions per place. [2024-06-04 14:39:30,251 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 37 selfloop transitions, 8 changer transitions 0/49 dead transitions. [2024-06-04 14:39:30,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 318 flow [2024-06-04 14:39:30,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:39:30,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:39:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2024-06-04 14:39:30,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-04 14:39:30,253 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 202 flow. Second operand 6 states and 79 transitions. [2024-06-04 14:39:30,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 318 flow [2024-06-04 14:39:30,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 289 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 14:39:30,255 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 206 flow [2024-06-04 14:39:30,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=206, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-04 14:39:30,255 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2024-06-04 14:39:30,256 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 206 flow [2024-06-04 14:39:30,256 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 14:39:30,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:30,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:30,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 14:39:30,256 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 14:39:30,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:30,257 INFO L85 PathProgramCache]: Analyzing trace with hash -2069385460, now seen corresponding path program 1 times [2024-06-04 14:39:30,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:30,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525437297] [2024-06-04 14:39:30,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:30,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:30,896 INFO 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 14:39:30,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:30,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525437297] [2024-06-04 14:39:30,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525437297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:30,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:30,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:39:30,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401335230] [2024-06-04 14:39:30,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:30,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:39:30,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:30,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:39:30,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:39:30,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:39:30,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 206 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 14:39:30,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:30,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:39:30,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:31,089 INFO L124 PetriNetUnfolderBase]: 225/416 cut-off events. [2024-06-04 14:39:31,090 INFO L125 PetriNetUnfolderBase]: For 1347/1347 co-relation queries the response was YES. [2024-06-04 14:39:31,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 416 events. 225/416 cut-off events. For 1347/1347 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1546 event pairs, 58 based on Foata normal form. 1/416 useless extension candidates. Maximal degree in co-relation 1443. Up to 377 conditions per place. [2024-06-04 14:39:31,092 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 40 selfloop transitions, 11 changer transitions 0/55 dead transitions. [2024-06-04 14:39:31,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 55 transitions, 362 flow [2024-06-04 14:39:31,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:39:31,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:39:31,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-04 14:39:31,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-04 14:39:31,094 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 206 flow. Second operand 6 states and 83 transitions. [2024-06-04 14:39:31,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 55 transitions, 362 flow [2024-06-04 14:39:31,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 345 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 14:39:31,096 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 236 flow [2024-06-04 14:39:31,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-04 14:39:31,097 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2024-06-04 14:39:31,097 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 236 flow [2024-06-04 14:39:31,097 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 14:39:31,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:31,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:31,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 14:39:31,098 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 14:39:31,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:31,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1808870444, now seen corresponding path program 2 times [2024-06-04 14:39:31,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:31,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866302124] [2024-06-04 14:39:31,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:31,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:31,680 INFO 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 14:39:31,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:31,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866302124] [2024-06-04 14:39:31,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866302124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:31,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:31,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:39:31,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347626488] [2024-06-04 14:39:31,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:31,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:39:31,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:31,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:39:31,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:39:31,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:39:31,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 236 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 14:39:31,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:31,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:39:31,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:31,922 INFO L124 PetriNetUnfolderBase]: 223/413 cut-off events. [2024-06-04 14:39:31,922 INFO L125 PetriNetUnfolderBase]: For 1666/1666 co-relation queries the response was YES. [2024-06-04 14:39:31,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 413 events. 223/413 cut-off events. For 1666/1666 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1515 event pairs, 57 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 1505. Up to 387 conditions per place. [2024-06-04 14:39:31,924 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 39 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2024-06-04 14:39:31,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 344 flow [2024-06-04 14:39:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:39:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:39:31,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-04 14:39:31,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 14:39:31,926 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 236 flow. Second operand 6 states and 77 transitions. [2024-06-04 14:39:31,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 51 transitions, 344 flow [2024-06-04 14:39:31,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 332 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-04 14:39:31,929 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 245 flow [2024-06-04 14:39:31,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-04 14:39:31,930 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 24 predicate places. [2024-06-04 14:39:31,930 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 245 flow [2024-06-04 14:39:31,930 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 14:39:31,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:31,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:31,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 14:39:31,931 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:39:31,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:31,931 INFO L85 PathProgramCache]: Analyzing trace with hash 486985931, now seen corresponding path program 1 times [2024-06-04 14:39:31,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:31,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542815806] [2024-06-04 14:39:31,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:31,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:32,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:32,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:32,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542815806] [2024-06-04 14:39:32,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542815806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:32,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:32,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:32,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186868507] [2024-06-04 14:39:32,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:32,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:32,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:32,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:32,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:32,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-04 14:39:32,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 245 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 14:39:32,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:32,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-04 14:39:32,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:33,125 INFO L124 PetriNetUnfolderBase]: 217/403 cut-off events. [2024-06-04 14:39:33,126 INFO L125 PetriNetUnfolderBase]: For 2095/2095 co-relation queries the response was YES. [2024-06-04 14:39:33,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 403 events. 217/403 cut-off events. For 2095/2095 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1457 event pairs, 35 based on Foata normal form. 4/406 useless extension candidates. Maximal degree in co-relation 1498. Up to 307 conditions per place. [2024-06-04 14:39:33,128 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 50 selfloop transitions, 14 changer transitions 0/70 dead transitions. [2024-06-04 14:39:33,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 425 flow [2024-06-04 14:39:33,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:39:33,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:39:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-04 14:39:33,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478114478114478 [2024-06-04 14:39:33,129 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 245 flow. Second operand 9 states and 133 transitions. [2024-06-04 14:39:33,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 425 flow [2024-06-04 14:39:33,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 404 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-04 14:39:33,132 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 244 flow [2024-06-04 14:39:33,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=244, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2024-06-04 14:39:33,133 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 27 predicate places. [2024-06-04 14:39:33,133 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 244 flow [2024-06-04 14:39:33,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 14:39:33,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:33,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:33,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 14:39:33,134 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 14:39:33,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:33,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1461964812, now seen corresponding path program 1 times [2024-06-04 14:39:33,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:33,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942180034] [2024-06-04 14:39:33,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:33,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:33,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:33,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:33,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942180034] [2024-06-04 14:39:33,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942180034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:33,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:33,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:39:33,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157692133] [2024-06-04 14:39:33,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:33,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:39:33,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:33,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:39:33,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:39:33,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:33,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 244 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 14:39:33,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:33,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:33,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:34,005 INFO L124 PetriNetUnfolderBase]: 238/426 cut-off events. [2024-06-04 14:39:34,005 INFO L125 PetriNetUnfolderBase]: For 2383/2383 co-relation queries the response was YES. [2024-06-04 14:39:34,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 426 events. 238/426 cut-off events. For 2383/2383 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1507 event pairs, 53 based on Foata normal form. 1/426 useless extension candidates. Maximal degree in co-relation 1653. Up to 381 conditions per place. [2024-06-04 14:39:34,008 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 44 selfloop transitions, 16 changer transitions 0/62 dead transitions. [2024-06-04 14:39:34,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 438 flow [2024-06-04 14:39:34,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:39:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:39:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-04 14:39:34,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-04 14:39:34,009 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 244 flow. Second operand 7 states and 90 transitions. [2024-06-04 14:39:34,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 438 flow [2024-06-04 14:39:34,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 402 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 14:39:34,013 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 269 flow [2024-06-04 14:39:34,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-06-04 14:39:34,013 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 27 predicate places. [2024-06-04 14:39:34,013 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 269 flow [2024-06-04 14:39:34,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 14:39:34,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:34,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:34,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 14:39:34,014 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 14:39:34,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:34,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1461785074, now seen corresponding path program 1 times [2024-06-04 14:39:34,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:34,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462454461] [2024-06-04 14:39:34,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:34,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:34,646 INFO 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 14:39:34,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:34,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462454461] [2024-06-04 14:39:34,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462454461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:34,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:34,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:39:34,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279832706] [2024-06-04 14:39:34,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:34,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:39:34,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:34,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:39:34,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:39:34,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:39:34,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 269 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 14:39:34,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:34,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:39:34,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:34,901 INFO L124 PetriNetUnfolderBase]: 243/443 cut-off events. [2024-06-04 14:39:34,901 INFO L125 PetriNetUnfolderBase]: For 3157/3157 co-relation queries the response was YES. [2024-06-04 14:39:34,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1785 conditions, 443 events. 243/443 cut-off events. For 3157/3157 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1622 event pairs, 56 based on Foata normal form. 3/445 useless extension candidates. Maximal degree in co-relation 1756. Up to 373 conditions per place. [2024-06-04 14:39:34,904 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 48 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-06-04 14:39:34,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 477 flow [2024-06-04 14:39:34,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:39:34,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:39:34,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-04 14:39:34,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-04 14:39:34,905 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 269 flow. Second operand 7 states and 98 transitions. [2024-06-04 14:39:34,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 477 flow [2024-06-04 14:39:34,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 456 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 14:39:34,909 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 322 flow [2024-06-04 14:39:34,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=322, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-06-04 14:39:34,910 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2024-06-04 14:39:34,910 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 322 flow [2024-06-04 14:39:34,911 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 14:39:34,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:34,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:34,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 14:39:34,911 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 14:39:34,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:34,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1461785322, now seen corresponding path program 2 times [2024-06-04 14:39:34,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:34,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140783614] [2024-06-04 14:39:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:34,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:35,576 INFO 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 14:39:35,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:35,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140783614] [2024-06-04 14:39:35,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140783614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:35,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:35,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:39:35,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334418801] [2024-06-04 14:39:35,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:35,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:39:35,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:35,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:39:35,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:39:35,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:35,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 322 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 14:39:35,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:35,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:35,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:35,768 INFO L124 PetriNetUnfolderBase]: 260/462 cut-off events. [2024-06-04 14:39:35,768 INFO L125 PetriNetUnfolderBase]: For 3665/3665 co-relation queries the response was YES. [2024-06-04 14:39:35,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 462 events. 260/462 cut-off events. For 3665/3665 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1649 event pairs, 55 based on Foata normal form. 1/462 useless extension candidates. Maximal degree in co-relation 1991. Up to 416 conditions per place. [2024-06-04 14:39:35,771 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 48 selfloop transitions, 17 changer transitions 0/67 dead transitions. [2024-06-04 14:39:35,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 514 flow [2024-06-04 14:39:35,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:39:35,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:39:35,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-04 14:39:35,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-04 14:39:35,772 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 322 flow. Second operand 7 states and 88 transitions. [2024-06-04 14:39:35,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 514 flow [2024-06-04 14:39:35,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 503 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-04 14:39:35,777 INFO L231 Difference]: Finished difference. Result has 69 places, 56 transitions, 362 flow [2024-06-04 14:39:35,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=362, PETRI_PLACES=69, PETRI_TRANSITIONS=56} [2024-06-04 14:39:35,778 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 37 predicate places. [2024-06-04 14:39:35,778 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 56 transitions, 362 flow [2024-06-04 14:39:35,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 14:39:35,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:35,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:35,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 14:39:35,778 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 14:39:35,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:35,779 INFO L85 PathProgramCache]: Analyzing trace with hash 240418462, now seen corresponding path program 2 times [2024-06-04 14:39:35,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:35,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387056285] [2024-06-04 14:39:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:35,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:36,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:36,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387056285] [2024-06-04 14:39:36,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387056285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:36,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:36,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:39:36,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851580019] [2024-06-04 14:39:36,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:36,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:39:36,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:36,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:39:36,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:39:36,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:39:36,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 56 transitions, 362 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 14:39:36,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:36,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:39:36,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:36,706 INFO L124 PetriNetUnfolderBase]: 255/463 cut-off events. [2024-06-04 14:39:36,707 INFO L125 PetriNetUnfolderBase]: For 4461/4461 co-relation queries the response was YES. [2024-06-04 14:39:36,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2084 conditions, 463 events. 255/463 cut-off events. For 4461/4461 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1707 event pairs, 54 based on Foata normal form. 3/465 useless extension candidates. Maximal degree in co-relation 2049. Up to 422 conditions per place. [2024-06-04 14:39:36,710 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 50 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-06-04 14:39:36,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 67 transitions, 518 flow [2024-06-04 14:39:36,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:39:36,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:39:36,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-04 14:39:36,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-04 14:39:36,711 INFO L175 Difference]: Start difference. First operand has 69 places, 56 transitions, 362 flow. Second operand 7 states and 88 transitions. [2024-06-04 14:39:36,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 67 transitions, 518 flow [2024-06-04 14:39:36,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 491 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 14:39:36,715 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 378 flow [2024-06-04 14:39:36,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=378, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2024-06-04 14:39:36,716 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 40 predicate places. [2024-06-04 14:39:36,716 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 378 flow [2024-06-04 14:39:36,717 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 14:39:36,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:36,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:36,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 14:39:36,717 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 14:39:36,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:36,717 INFO L85 PathProgramCache]: Analyzing trace with hash -369114016, now seen corresponding path program 3 times [2024-06-04 14:39:36,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:36,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363149901] [2024-06-04 14:39:36,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:36,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:37,279 INFO 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 14:39:37,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:37,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363149901] [2024-06-04 14:39:37,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363149901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:37,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:37,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:39:37,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333200855] [2024-06-04 14:39:37,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:37,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:39:37,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:37,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:39:37,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:39:37,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:37,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 378 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 14:39:37,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:37,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:37,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:37,559 INFO L124 PetriNetUnfolderBase]: 267/474 cut-off events. [2024-06-04 14:39:37,560 INFO L125 PetriNetUnfolderBase]: For 4877/4877 co-relation queries the response was YES. [2024-06-04 14:39:37,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 474 events. 267/474 cut-off events. For 4877/4877 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1712 event pairs, 54 based on Foata normal form. 1/474 useless extension candidates. Maximal degree in co-relation 2147. Up to 456 conditions per place. [2024-06-04 14:39:37,563 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 53 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2024-06-04 14:39:37,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 65 transitions, 520 flow [2024-06-04 14:39:37,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:39:37,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:39:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-04 14:39:37,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463203463203463 [2024-06-04 14:39:37,564 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 378 flow. Second operand 7 states and 80 transitions. [2024-06-04 14:39:37,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 65 transitions, 520 flow [2024-06-04 14:39:37,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 65 transitions, 493 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 14:39:37,569 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 376 flow [2024-06-04 14:39:37,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=376, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2024-06-04 14:39:37,570 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-04 14:39:37,570 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 376 flow [2024-06-04 14:39:37,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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 14:39:37,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:37,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:37,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 14:39:37,571 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 14:39:37,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:37,571 INFO L85 PathProgramCache]: Analyzing trace with hash -369113768, now seen corresponding path program 3 times [2024-06-04 14:39:37,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:37,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405572743] [2024-06-04 14:39:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:37,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:38,137 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 14:39:38,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:38,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405572743] [2024-06-04 14:39:38,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405572743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:38,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:38,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:39:38,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078307331] [2024-06-04 14:39:38,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:38,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:39:38,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:38,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:39:38,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:39:38,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:39:38,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 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 14:39:38,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:38,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:39:38,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:38,456 INFO L124 PetriNetUnfolderBase]: 247/451 cut-off events. [2024-06-04 14:39:38,456 INFO L125 PetriNetUnfolderBase]: For 5311/5311 co-relation queries the response was YES. [2024-06-04 14:39:38,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2070 conditions, 451 events. 247/451 cut-off events. For 5311/5311 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1663 event pairs, 52 based on Foata normal form. 3/453 useless extension candidates. Maximal degree in co-relation 2034. Up to 399 conditions per place. [2024-06-04 14:39:38,459 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 49 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2024-06-04 14:39:38,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 69 transitions, 528 flow [2024-06-04 14:39:38,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:39:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:39:38,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-04 14:39:38,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39826839826839827 [2024-06-04 14:39:38,460 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 376 flow. Second operand 7 states and 92 transitions. [2024-06-04 14:39:38,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 69 transitions, 528 flow [2024-06-04 14:39:38,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 69 transitions, 490 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 14:39:38,464 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 369 flow [2024-06-04 14:39:38,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=369, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2024-06-04 14:39:38,465 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-04 14:39:38,465 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 369 flow [2024-06-04 14:39:38,465 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 14:39:38,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:38,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:38,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 14:39:38,466 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 14:39:38,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:38,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1923582313, now seen corresponding path program 1 times [2024-06-04 14:39:38,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:38,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299362170] [2024-06-04 14:39:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:38,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:39,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:39,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299362170] [2024-06-04 14:39:39,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299362170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:39,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:39,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:39,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436934212] [2024-06-04 14:39:39,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:39,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:39,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:39,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:39,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:39,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:39,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 369 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:39,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:39,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:39,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:39,439 INFO L124 PetriNetUnfolderBase]: 264/470 cut-off events. [2024-06-04 14:39:39,439 INFO L125 PetriNetUnfolderBase]: For 5790/5790 co-relation queries the response was YES. [2024-06-04 14:39:39,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2200 conditions, 470 events. 264/470 cut-off events. For 5790/5790 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1730 event pairs, 52 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 2163. Up to 405 conditions per place. [2024-06-04 14:39:39,442 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 55 selfloop transitions, 23 changer transitions 0/80 dead transitions. [2024-06-04 14:39:39,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 625 flow [2024-06-04 14:39:39,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:39:39,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:39:39,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-04 14:39:39,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39015151515151514 [2024-06-04 14:39:39,443 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 369 flow. Second operand 8 states and 103 transitions. [2024-06-04 14:39:39,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 80 transitions, 625 flow [2024-06-04 14:39:39,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 584 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 14:39:39,448 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 407 flow [2024-06-04 14:39:39,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=407, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2024-06-04 14:39:39,448 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2024-06-04 14:39:39,448 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 407 flow [2024-06-04 14:39:39,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:39,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:39,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:39,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 14:39:39,449 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 14:39:39,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:39,449 INFO L85 PathProgramCache]: Analyzing trace with hash -533866750, now seen corresponding path program 1 times [2024-06-04 14:39:39,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:39,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636234485] [2024-06-04 14:39:39,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:39,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:40,120 INFO 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 14:39:40,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:40,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636234485] [2024-06-04 14:39:40,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636234485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:40,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:40,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:40,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160340443] [2024-06-04 14:39:40,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:40,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:40,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:40,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:40,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:40,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:40,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 407 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:40,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:40,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:40,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:40,354 INFO L124 PetriNetUnfolderBase]: 283/501 cut-off events. [2024-06-04 14:39:40,354 INFO L125 PetriNetUnfolderBase]: For 7041/7041 co-relation queries the response was YES. [2024-06-04 14:39:40,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2401 conditions, 501 events. 283/501 cut-off events. For 7041/7041 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1864 event pairs, 57 based on Foata normal form. 3/503 useless extension candidates. Maximal degree in co-relation 2363. Up to 383 conditions per place. [2024-06-04 14:39:40,357 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 60 selfloop transitions, 25 changer transitions 0/87 dead transitions. [2024-06-04 14:39:40,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 87 transitions, 689 flow [2024-06-04 14:39:40,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:39:40,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:39:40,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-04 14:39:40,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:39:40,358 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 407 flow. Second operand 8 states and 108 transitions. [2024-06-04 14:39:40,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 87 transitions, 689 flow [2024-06-04 14:39:40,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 87 transitions, 652 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-04 14:39:40,365 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 453 flow [2024-06-04 14:39:40,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=453, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2024-06-04 14:39:40,365 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 48 predicate places. [2024-06-04 14:39:40,365 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 453 flow [2024-06-04 14:39:40,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:40,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:40,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:40,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 14:39:40,366 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 14:39:40,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:40,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1923732043, now seen corresponding path program 2 times [2024-06-04 14:39:40,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:40,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384704309] [2024-06-04 14:39:40,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:40,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:41,038 INFO 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 14:39:41,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:41,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384704309] [2024-06-04 14:39:41,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384704309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:41,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:41,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:41,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002849201] [2024-06-04 14:39:41,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:41,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:41,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:41,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:41,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:41,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:41,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 453 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:41,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:41,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:41,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:41,275 INFO L124 PetriNetUnfolderBase]: 286/506 cut-off events. [2024-06-04 14:39:41,275 INFO L125 PetriNetUnfolderBase]: For 7596/7596 co-relation queries the response was YES. [2024-06-04 14:39:41,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2539 conditions, 506 events. 286/506 cut-off events. For 7596/7596 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1874 event pairs, 56 based on Foata normal form. 1/506 useless extension candidates. Maximal degree in co-relation 2499. Up to 440 conditions per place. [2024-06-04 14:39:41,280 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 58 selfloop transitions, 23 changer transitions 0/83 dead transitions. [2024-06-04 14:39:41,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 699 flow [2024-06-04 14:39:41,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:39:41,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:39:41,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-04 14:39:41,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38257575757575757 [2024-06-04 14:39:41,282 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 453 flow. Second operand 8 states and 101 transitions. [2024-06-04 14:39:41,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 699 flow [2024-06-04 14:39:41,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 83 transitions, 667 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-04 14:39:41,289 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 484 flow [2024-06-04 14:39:41,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=484, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2024-06-04 14:39:41,290 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 52 predicate places. [2024-06-04 14:39:41,290 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 484 flow [2024-06-04 14:39:41,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:41,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:41,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:41,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 14:39:41,291 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 14:39:41,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:41,291 INFO L85 PathProgramCache]: Analyzing trace with hash -109539285, now seen corresponding path program 3 times [2024-06-04 14:39:41,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:41,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441659069] [2024-06-04 14:39:41,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:41,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:41,961 INFO 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 14:39:41,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:41,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441659069] [2024-06-04 14:39:41,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441659069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:41,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:41,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:41,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017421999] [2024-06-04 14:39:41,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:41,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:41,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:41,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:41,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:42,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:42,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 484 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:42,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:42,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:42,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:42,218 INFO L124 PetriNetUnfolderBase]: 289/511 cut-off events. [2024-06-04 14:39:42,218 INFO L125 PetriNetUnfolderBase]: For 8325/8325 co-relation queries the response was YES. [2024-06-04 14:39:42,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2633 conditions, 511 events. 289/511 cut-off events. For 8325/8325 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1904 event pairs, 60 based on Foata normal form. 1/511 useless extension candidates. Maximal degree in co-relation 2591. Up to 444 conditions per place. [2024-06-04 14:39:42,224 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 56 selfloop transitions, 24 changer transitions 0/82 dead transitions. [2024-06-04 14:39:42,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 82 transitions, 726 flow [2024-06-04 14:39:42,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:39:42,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:39:42,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-04 14:39:42,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:39:42,227 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 484 flow. Second operand 8 states and 99 transitions. [2024-06-04 14:39:42,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 82 transitions, 726 flow [2024-06-04 14:39:42,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 82 transitions, 687 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-04 14:39:42,239 INFO L231 Difference]: Finished difference. Result has 87 places, 70 transitions, 514 flow [2024-06-04 14:39:42,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=514, PETRI_PLACES=87, PETRI_TRANSITIONS=70} [2024-06-04 14:39:42,240 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 55 predicate places. [2024-06-04 14:39:42,240 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 70 transitions, 514 flow [2024-06-04 14:39:42,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:42,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:42,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:42,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 14:39:42,241 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 14:39:42,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:42,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1929303890, now seen corresponding path program 2 times [2024-06-04 14:39:42,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:42,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103466064] [2024-06-04 14:39:42,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:42,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:42,984 INFO 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 14:39:42,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:42,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103466064] [2024-06-04 14:39:42,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103466064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:42,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:42,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:42,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34061304] [2024-06-04 14:39:42,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:42,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:42,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:42,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:42,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:43,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:43,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 70 transitions, 514 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:43,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:43,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:43,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:43,217 INFO L124 PetriNetUnfolderBase]: 313/550 cut-off events. [2024-06-04 14:39:43,217 INFO L125 PetriNetUnfolderBase]: For 10281/10281 co-relation queries the response was YES. [2024-06-04 14:39:43,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2881 conditions, 550 events. 313/550 cut-off events. For 10281/10281 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2093 event pairs, 63 based on Foata normal form. 3/552 useless extension candidates. Maximal degree in co-relation 2838. Up to 413 conditions per place. [2024-06-04 14:39:43,221 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 64 selfloop transitions, 27 changer transitions 0/93 dead transitions. [2024-06-04 14:39:43,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 93 transitions, 852 flow [2024-06-04 14:39:43,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:39:43,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:39:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-04 14:39:43,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053030303030303 [2024-06-04 14:39:43,222 INFO L175 Difference]: Start difference. First operand has 87 places, 70 transitions, 514 flow. Second operand 8 states and 107 transitions. [2024-06-04 14:39:43,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 93 transitions, 852 flow [2024-06-04 14:39:43,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 93 transitions, 813 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-04 14:39:43,231 INFO L231 Difference]: Finished difference. Result has 90 places, 74 transitions, 562 flow [2024-06-04 14:39:43,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=562, PETRI_PLACES=90, PETRI_TRANSITIONS=74} [2024-06-04 14:39:43,231 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 58 predicate places. [2024-06-04 14:39:43,231 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 74 transitions, 562 flow [2024-06-04 14:39:43,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:43,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:43,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:43,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 14:39:43,232 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 14:39:43,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:43,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1929296450, now seen corresponding path program 3 times [2024-06-04 14:39:43,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:43,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244920825] [2024-06-04 14:39:43,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:43,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:43,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:43,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244920825] [2024-06-04 14:39:43,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244920825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:43,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:43,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:43,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474236265] [2024-06-04 14:39:43,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:43,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:43,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:43,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:43,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:43,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:43,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 74 transitions, 562 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:43,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:43,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:43,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:44,189 INFO L124 PetriNetUnfolderBase]: 307/541 cut-off events. [2024-06-04 14:39:44,189 INFO L125 PetriNetUnfolderBase]: For 10743/10743 co-relation queries the response was YES. [2024-06-04 14:39:44,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2876 conditions, 541 events. 307/541 cut-off events. For 10743/10743 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2060 event pairs, 61 based on Foata normal form. 3/543 useless extension candidates. Maximal degree in co-relation 2832. Up to 409 conditions per place. [2024-06-04 14:39:44,193 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 66 selfloop transitions, 26 changer transitions 0/94 dead transitions. [2024-06-04 14:39:44,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 94 transitions, 840 flow [2024-06-04 14:39:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:39:44,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:39:44,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-04 14:39:44,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128787878787879 [2024-06-04 14:39:44,194 INFO L175 Difference]: Start difference. First operand has 90 places, 74 transitions, 562 flow. Second operand 8 states and 109 transitions. [2024-06-04 14:39:44,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 94 transitions, 840 flow [2024-06-04 14:39:44,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 94 transitions, 797 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-04 14:39:44,202 INFO L231 Difference]: Finished difference. Result has 94 places, 74 transitions, 576 flow [2024-06-04 14:39:44,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=576, PETRI_PLACES=94, PETRI_TRANSITIONS=74} [2024-06-04 14:39:44,203 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 62 predicate places. [2024-06-04 14:39:44,203 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 74 transitions, 576 flow [2024-06-04 14:39:44,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:44,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:44,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:44,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 14:39:44,203 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 14:39:44,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:44,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1137220812, now seen corresponding path program 4 times [2024-06-04 14:39:44,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:44,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579405969] [2024-06-04 14:39:44,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:44,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:44,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:44,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:44,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579405969] [2024-06-04 14:39:44,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579405969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:44,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:44,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:44,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745317760] [2024-06-04 14:39:44,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:44,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:44,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:44,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:44,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:44,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:44,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 74 transitions, 576 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:44,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:44,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:44,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:45,141 INFO L124 PetriNetUnfolderBase]: 331/580 cut-off events. [2024-06-04 14:39:45,141 INFO L125 PetriNetUnfolderBase]: For 12685/12685 co-relation queries the response was YES. [2024-06-04 14:39:45,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3143 conditions, 580 events. 331/580 cut-off events. For 12685/12685 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2251 event pairs, 65 based on Foata normal form. 3/582 useless extension candidates. Maximal degree in co-relation 3098. Up to 496 conditions per place. [2024-06-04 14:39:45,147 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 73 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2024-06-04 14:39:45,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 94 transitions, 928 flow [2024-06-04 14:39:45,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:39:45,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:39:45,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-04 14:39:45,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38257575757575757 [2024-06-04 14:39:45,148 INFO L175 Difference]: Start difference. First operand has 94 places, 74 transitions, 576 flow. Second operand 8 states and 101 transitions. [2024-06-04 14:39:45,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 94 transitions, 928 flow [2024-06-04 14:39:45,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 862 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-04 14:39:45,159 INFO L231 Difference]: Finished difference. Result has 95 places, 78 transitions, 593 flow [2024-06-04 14:39:45,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=593, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2024-06-04 14:39:45,159 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 63 predicate places. [2024-06-04 14:39:45,160 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 593 flow [2024-06-04 14:39:45,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:45,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:45,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:45,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 14:39:45,160 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 14:39:45,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:45,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1442368568, now seen corresponding path program 5 times [2024-06-04 14:39:45,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:45,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661727255] [2024-06-04 14:39:45,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:45,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:45,788 INFO 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 14:39:45,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:45,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661727255] [2024-06-04 14:39:45,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661727255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:45,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:45,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:45,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428598600] [2024-06-04 14:39:45,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:45,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:45,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:45,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:45,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:45,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:45,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 593 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:45,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:45,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:45,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:46,151 INFO L124 PetriNetUnfolderBase]: 325/571 cut-off events. [2024-06-04 14:39:46,151 INFO L125 PetriNetUnfolderBase]: For 12839/12839 co-relation queries the response was YES. [2024-06-04 14:39:46,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3054 conditions, 571 events. 325/571 cut-off events. For 12839/12839 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2210 event pairs, 57 based on Foata normal form. 3/573 useless extension candidates. Maximal degree in co-relation 3008. Up to 492 conditions per place. [2024-06-04 14:39:46,155 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 71 selfloop transitions, 20 changer transitions 0/93 dead transitions. [2024-06-04 14:39:46,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 93 transitions, 859 flow [2024-06-04 14:39:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:39:46,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:39:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-04 14:39:46,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 14:39:46,157 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 593 flow. Second operand 8 states and 99 transitions. [2024-06-04 14:39:46,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 93 transitions, 859 flow [2024-06-04 14:39:46,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 93 transitions, 811 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-04 14:39:46,171 INFO L231 Difference]: Finished difference. Result has 98 places, 78 transitions, 590 flow [2024-06-04 14:39:46,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=590, PETRI_PLACES=98, PETRI_TRANSITIONS=78} [2024-06-04 14:39:46,172 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 66 predicate places. [2024-06-04 14:39:46,172 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 78 transitions, 590 flow [2024-06-04 14:39:46,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:46,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:46,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:46,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 14:39:46,172 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 14:39:46,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:46,173 INFO L85 PathProgramCache]: Analyzing trace with hash 948045911, now seen corresponding path program 4 times [2024-06-04 14:39:46,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:46,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861174131] [2024-06-04 14:39:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:46,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:46,812 INFO 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 14:39:46,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:46,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861174131] [2024-06-04 14:39:46,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861174131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:46,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:46,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:46,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967437718] [2024-06-04 14:39:46,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:46,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:46,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:46,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:46,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:46,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:46,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 78 transitions, 590 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:46,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:46,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:46,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:47,048 INFO L124 PetriNetUnfolderBase]: 323/568 cut-off events. [2024-06-04 14:39:47,048 INFO L125 PetriNetUnfolderBase]: For 12942/12942 co-relation queries the response was YES. [2024-06-04 14:39:47,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3055 conditions, 568 events. 323/568 cut-off events. For 12942/12942 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2193 event pairs, 67 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 3008. Up to 547 conditions per place. [2024-06-04 14:39:47,052 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 72 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-06-04 14:39:47,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 86 transitions, 776 flow [2024-06-04 14:39:47,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:39:47,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:39:47,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-04 14:39:47,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3371212121212121 [2024-06-04 14:39:47,053 INFO L175 Difference]: Start difference. First operand has 98 places, 78 transitions, 590 flow. Second operand 8 states and 89 transitions. [2024-06-04 14:39:47,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 86 transitions, 776 flow [2024-06-04 14:39:47,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 86 transitions, 720 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 14:39:47,064 INFO L231 Difference]: Finished difference. Result has 99 places, 78 transitions, 563 flow [2024-06-04 14:39:47,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=99, PETRI_TRANSITIONS=78} [2024-06-04 14:39:47,064 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 67 predicate places. [2024-06-04 14:39:47,065 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 78 transitions, 563 flow [2024-06-04 14:39:47,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:47,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:47,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:47,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 14:39:47,065 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 14:39:47,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:47,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1451572778, now seen corresponding path program 6 times [2024-06-04 14:39:47,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:47,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573139239] [2024-06-04 14:39:47,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:47,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:47,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:47,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:47,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573139239] [2024-06-04 14:39:47,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573139239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:47,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:47,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:47,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210483809] [2024-06-04 14:39:47,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:47,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:47,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:47,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:47,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:47,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:47,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 78 transitions, 563 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:47,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:47,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:47,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:47,981 INFO L124 PetriNetUnfolderBase]: 317/559 cut-off events. [2024-06-04 14:39:47,981 INFO L125 PetriNetUnfolderBase]: For 13558/13558 co-relation queries the response was YES. [2024-06-04 14:39:47,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2940 conditions, 559 events. 317/559 cut-off events. For 13558/13558 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2159 event pairs, 61 based on Foata normal form. 3/561 useless extension candidates. Maximal degree in co-relation 2892. Up to 522 conditions per place. [2024-06-04 14:39:47,985 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 76 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2024-06-04 14:39:47,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 90 transitions, 769 flow [2024-06-04 14:39:47,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:39:47,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:39:47,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-04 14:39:47,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 14:39:47,986 INFO L175 Difference]: Start difference. First operand has 99 places, 78 transitions, 563 flow. Second operand 8 states and 93 transitions. [2024-06-04 14:39:47,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 90 transitions, 769 flow [2024-06-04 14:39:47,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 90 transitions, 705 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:39:47,998 INFO L231 Difference]: Finished difference. Result has 97 places, 78 transitions, 528 flow [2024-06-04 14:39:47,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=528, PETRI_PLACES=97, PETRI_TRANSITIONS=78} [2024-06-04 14:39:47,998 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 65 predicate places. [2024-06-04 14:39:47,998 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 78 transitions, 528 flow [2024-06-04 14:39:47,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:47,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:47,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:47,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 14:39:47,999 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 14:39:47,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:47,999 INFO L85 PathProgramCache]: Analyzing trace with hash 948322617, now seen corresponding path program 1 times [2024-06-04 14:39:47,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:48,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007758574] [2024-06-04 14:39:48,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:48,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:48,800 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 14:39:48,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:48,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007758574] [2024-06-04 14:39:48,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007758574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:48,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:48,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:39:48,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812628661] [2024-06-04 14:39:48,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:48,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 14:39:48,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:48,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 14:39:48,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 14:39:48,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:39:48,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 78 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 14:39:48,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:48,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:39:48,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:49,224 INFO L124 PetriNetUnfolderBase]: 286/526 cut-off events. [2024-06-04 14:39:49,224 INFO L125 PetriNetUnfolderBase]: For 13565/13565 co-relation queries the response was YES. [2024-06-04 14:39:49,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2739 conditions, 526 events. 286/526 cut-off events. For 13565/13565 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2095 event pairs, 57 based on Foata normal form. 2/527 useless extension candidates. Maximal degree in co-relation 2691. Up to 458 conditions per place. [2024-06-04 14:39:49,230 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 65 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2024-06-04 14:39:49,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 90 transitions, 720 flow [2024-06-04 14:39:49,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:39:49,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:39:49,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-04 14:39:49,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-04 14:39:49,231 INFO L175 Difference]: Start difference. First operand has 97 places, 78 transitions, 528 flow. Second operand 8 states and 98 transitions. [2024-06-04 14:39:49,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 90 transitions, 720 flow [2024-06-04 14:39:49,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 90 transitions, 680 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 14:39:49,242 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 537 flow [2024-06-04 14:39:49,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=537, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2024-06-04 14:39:49,243 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 65 predicate places. [2024-06-04 14:39:49,243 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 537 flow [2024-06-04 14:39:49,243 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 14:39:49,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:49,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:49,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 14:39:49,244 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 14:39:49,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:49,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1451911391, now seen corresponding path program 1 times [2024-06-04 14:39:49,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:49,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868617727] [2024-06-04 14:39:49,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:49,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:50,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:50,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:50,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868617727] [2024-06-04 14:39:50,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868617727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:50,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:50,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:39:50,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613459923] [2024-06-04 14:39:50,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:50,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:39:50,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:50,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:39:50,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:39:50,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:39:50,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 537 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 14:39:50,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:50,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:39:50,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:50,874 INFO L124 PetriNetUnfolderBase]: 282/520 cut-off events. [2024-06-04 14:39:50,875 INFO L125 PetriNetUnfolderBase]: For 13745/13745 co-relation queries the response was YES. [2024-06-04 14:39:50,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2715 conditions, 520 events. 282/520 cut-off events. For 13745/13745 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2043 event pairs, 56 based on Foata normal form. 2/521 useless extension candidates. Maximal degree in co-relation 2666. Up to 455 conditions per place. [2024-06-04 14:39:50,880 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 66 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2024-06-04 14:39:50,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 90 transitions, 713 flow [2024-06-04 14:39:50,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:39:50,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:39:50,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-04 14:39:50,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:39:50,882 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 537 flow. Second operand 8 states and 96 transitions. [2024-06-04 14:39:50,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 90 transitions, 713 flow [2024-06-04 14:39:50,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 90 transitions, 677 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 14:39:50,899 INFO L231 Difference]: Finished difference. Result has 99 places, 80 transitions, 527 flow [2024-06-04 14:39:50,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=91, 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=8, PETRI_FLOW=527, PETRI_PLACES=99, PETRI_TRANSITIONS=80} [2024-06-04 14:39:50,906 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 67 predicate places. [2024-06-04 14:39:50,906 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 80 transitions, 527 flow [2024-06-04 14:39:50,906 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 14:39:50,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:50,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:50,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 14:39:50,906 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 14:39:50,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:50,907 INFO L85 PathProgramCache]: Analyzing trace with hash 721998961, now seen corresponding path program 1 times [2024-06-04 14:39:50,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:50,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098301264] [2024-06-04 14:39:50,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:50,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:51,760 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 14:39:51,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:51,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098301264] [2024-06-04 14:39:51,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098301264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:51,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:51,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:39:51,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521998378] [2024-06-04 14:39:51,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:51,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:39:51,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:51,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:39:51,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:39:51,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:51,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 80 transitions, 527 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:51,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:51,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:51,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:52,129 INFO L124 PetriNetUnfolderBase]: 313/553 cut-off events. [2024-06-04 14:39:52,129 INFO L125 PetriNetUnfolderBase]: For 14413/14413 co-relation queries the response was YES. [2024-06-04 14:39:52,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2896 conditions, 553 events. 313/553 cut-off events. For 14413/14413 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2117 event pairs, 60 based on Foata normal form. 1/553 useless extension candidates. Maximal degree in co-relation 2846. Up to 505 conditions per place. [2024-06-04 14:39:52,132 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 87 selfloop transitions, 14 changer transitions 0/103 dead transitions. [2024-06-04 14:39:52,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 103 transitions, 795 flow [2024-06-04 14:39:52,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:39:52,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:39:52,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-04 14:39:52,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-04 14:39:52,133 INFO L175 Difference]: Start difference. First operand has 99 places, 80 transitions, 527 flow. Second operand 9 states and 110 transitions. [2024-06-04 14:39:52,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 103 transitions, 795 flow [2024-06-04 14:39:52,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 103 transitions, 769 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 14:39:52,147 INFO L231 Difference]: Finished difference. Result has 102 places, 82 transitions, 552 flow [2024-06-04 14:39:52,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=552, PETRI_PLACES=102, PETRI_TRANSITIONS=82} [2024-06-04 14:39:52,148 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 70 predicate places. [2024-06-04 14:39:52,148 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 82 transitions, 552 flow [2024-06-04 14:39:52,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:52,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:52,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:52,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 14:39:52,149 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 14:39:52,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:52,149 INFO L85 PathProgramCache]: Analyzing trace with hash 722118931, now seen corresponding path program 2 times [2024-06-04 14:39:52,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:52,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171832531] [2024-06-04 14:39:52,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:52,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:52,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:52,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171832531] [2024-06-04 14:39:52,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171832531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:52,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:52,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:39:52,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738748863] [2024-06-04 14:39:52,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:52,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:39:52,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:52,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:39:52,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:39:52,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:52,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 82 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:52,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:52,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:52,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:53,146 INFO L124 PetriNetUnfolderBase]: 316/558 cut-off events. [2024-06-04 14:39:53,147 INFO L125 PetriNetUnfolderBase]: For 15379/15379 co-relation queries the response was YES. [2024-06-04 14:39:53,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2994 conditions, 558 events. 316/558 cut-off events. For 15379/15379 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2151 event pairs, 61 based on Foata normal form. 1/558 useless extension candidates. Maximal degree in co-relation 2943. Up to 469 conditions per place. [2024-06-04 14:39:53,151 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 72 selfloop transitions, 31 changer transitions 0/105 dead transitions. [2024-06-04 14:39:53,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 105 transitions, 898 flow [2024-06-04 14:39:53,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:39:53,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:39:53,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-04 14:39:53,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-04 14:39:53,152 INFO L175 Difference]: Start difference. First operand has 102 places, 82 transitions, 552 flow. Second operand 9 states and 114 transitions. [2024-06-04 14:39:53,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 105 transitions, 898 flow [2024-06-04 14:39:53,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 105 transitions, 863 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 14:39:53,166 INFO L231 Difference]: Finished difference. Result has 104 places, 86 transitions, 624 flow [2024-06-04 14:39:53,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=624, PETRI_PLACES=104, PETRI_TRANSITIONS=86} [2024-06-04 14:39:53,167 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 72 predicate places. [2024-06-04 14:39:53,167 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 86 transitions, 624 flow [2024-06-04 14:39:53,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:53,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:53,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:53,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 14:39:53,168 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 14:39:53,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:53,168 INFO L85 PathProgramCache]: Analyzing trace with hash 629821403, now seen corresponding path program 1 times [2024-06-04 14:39:53,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:53,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086475835] [2024-06-04 14:39:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:53,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:53,873 INFO 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 14:39:53,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:53,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086475835] [2024-06-04 14:39:53,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086475835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:53,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:53,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:39:53,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384655256] [2024-06-04 14:39:53,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:53,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:39:53,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:53,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:39:53,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:39:53,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:53,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 86 transitions, 624 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:53,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:53,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:53,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:54,189 INFO L124 PetriNetUnfolderBase]: 335/589 cut-off events. [2024-06-04 14:39:54,190 INFO L125 PetriNetUnfolderBase]: For 18417/18417 co-relation queries the response was YES. [2024-06-04 14:39:54,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3239 conditions, 589 events. 335/589 cut-off events. For 18417/18417 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2328 event pairs, 54 based on Foata normal form. 3/591 useless extension candidates. Maximal degree in co-relation 3187. Up to 364 conditions per place. [2024-06-04 14:39:54,195 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 73 selfloop transitions, 42 changer transitions 0/117 dead transitions. [2024-06-04 14:39:54,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 117 transitions, 1012 flow [2024-06-04 14:39:54,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:39:54,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:39:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-04 14:39:54,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-04 14:39:54,200 INFO L175 Difference]: Start difference. First operand has 104 places, 86 transitions, 624 flow. Second operand 9 states and 124 transitions. [2024-06-04 14:39:54,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 117 transitions, 1012 flow [2024-06-04 14:39:54,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 117 transitions, 965 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-04 14:39:54,217 INFO L231 Difference]: Finished difference. Result has 108 places, 90 transitions, 698 flow [2024-06-04 14:39:54,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=698, PETRI_PLACES=108, PETRI_TRANSITIONS=90} [2024-06-04 14:39:54,218 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 76 predicate places. [2024-06-04 14:39:54,218 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 90 transitions, 698 flow [2024-06-04 14:39:54,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:54,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:54,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:54,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 14:39:54,219 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 14:39:54,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:54,219 INFO L85 PathProgramCache]: Analyzing trace with hash 726760747, now seen corresponding path program 2 times [2024-06-04 14:39:54,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:54,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216773602] [2024-06-04 14:39:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:54,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:54,849 INFO 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 14:39:54,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:54,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216773602] [2024-06-04 14:39:54,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216773602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:54,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:54,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:39:54,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998450754] [2024-06-04 14:39:54,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:54,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:39:54,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:54,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:39:54,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:39:54,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:54,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 90 transitions, 698 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:54,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:54,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:54,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:55,175 INFO L124 PetriNetUnfolderBase]: 359/628 cut-off events. [2024-06-04 14:39:55,175 INFO L125 PetriNetUnfolderBase]: For 21219/21219 co-relation queries the response was YES. [2024-06-04 14:39:55,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3647 conditions, 628 events. 359/628 cut-off events. For 21219/21219 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2526 event pairs, 54 based on Foata normal form. 3/630 useless extension candidates. Maximal degree in co-relation 3593. Up to 384 conditions per place. [2024-06-04 14:39:55,179 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 80 selfloop transitions, 39 changer transitions 0/121 dead transitions. [2024-06-04 14:39:55,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 121 transitions, 1166 flow [2024-06-04 14:39:55,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:39:55,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:39:55,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-04 14:39:55,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-04 14:39:55,180 INFO L175 Difference]: Start difference. First operand has 108 places, 90 transitions, 698 flow. Second operand 9 states and 126 transitions. [2024-06-04 14:39:55,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 121 transitions, 1166 flow [2024-06-04 14:39:55,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 121 transitions, 1100 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-04 14:39:55,200 INFO L231 Difference]: Finished difference. Result has 112 places, 94 transitions, 751 flow [2024-06-04 14:39:55,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=751, PETRI_PLACES=112, PETRI_TRANSITIONS=94} [2024-06-04 14:39:55,201 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 80 predicate places. [2024-06-04 14:39:55,201 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 94 transitions, 751 flow [2024-06-04 14:39:55,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:55,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:55,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:55,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 14:39:55,202 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 14:39:55,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:55,202 INFO L85 PathProgramCache]: Analyzing trace with hash 630000893, now seen corresponding path program 3 times [2024-06-04 14:39:55,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:55,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939219238] [2024-06-04 14:39:55,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:55,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:55,780 INFO 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 14:39:55,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:55,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939219238] [2024-06-04 14:39:55,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939219238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:55,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:55,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:39:55,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429063676] [2024-06-04 14:39:55,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:55,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:39:55,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:55,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:39:55,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:39:55,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:55,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 94 transitions, 751 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:55,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:55,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:55,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:56,113 INFO L124 PetriNetUnfolderBase]: 353/619 cut-off events. [2024-06-04 14:39:56,113 INFO L125 PetriNetUnfolderBase]: For 20947/20947 co-relation queries the response was YES. [2024-06-04 14:39:56,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3624 conditions, 619 events. 353/619 cut-off events. For 20947/20947 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2479 event pairs, 52 based on Foata normal form. 3/621 useless extension candidates. Maximal degree in co-relation 3568. Up to 380 conditions per place. [2024-06-04 14:39:56,117 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 76 selfloop transitions, 40 changer transitions 0/118 dead transitions. [2024-06-04 14:39:56,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 1109 flow [2024-06-04 14:39:56,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:39:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:39:56,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-04 14:39:56,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-04 14:39:56,118 INFO L175 Difference]: Start difference. First operand has 112 places, 94 transitions, 751 flow. Second operand 9 states and 122 transitions. [2024-06-04 14:39:56,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 1109 flow [2024-06-04 14:39:56,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 118 transitions, 1048 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-04 14:39:56,140 INFO L231 Difference]: Finished difference. Result has 116 places, 94 transitions, 775 flow [2024-06-04 14:39:56,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=775, PETRI_PLACES=116, PETRI_TRANSITIONS=94} [2024-06-04 14:39:56,140 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 84 predicate places. [2024-06-04 14:39:56,141 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 94 transitions, 775 flow [2024-06-04 14:39:56,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:56,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:56,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:56,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 14:39:56,141 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 14:39:56,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:56,141 INFO L85 PathProgramCache]: Analyzing trace with hash 726760561, now seen corresponding path program 3 times [2024-06-04 14:39:56,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:56,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951027922] [2024-06-04 14:39:56,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:56,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:56,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:39:56,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:56,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951027922] [2024-06-04 14:39:56,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951027922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:56,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:56,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:39:56,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564396839] [2024-06-04 14:39:56,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:56,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:39:56,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:56,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:39:56,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:39:56,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:56,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 94 transitions, 775 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:56,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:56,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:56,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:57,128 INFO L124 PetriNetUnfolderBase]: 356/624 cut-off events. [2024-06-04 14:39:57,128 INFO L125 PetriNetUnfolderBase]: For 21329/21329 co-relation queries the response was YES. [2024-06-04 14:39:57,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3719 conditions, 624 events. 356/624 cut-off events. For 21329/21329 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2483 event pairs, 69 based on Foata normal form. 1/624 useless extension candidates. Maximal degree in co-relation 3662. Up to 534 conditions per place. [2024-06-04 14:39:57,132 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 79 selfloop transitions, 31 changer transitions 0/112 dead transitions. [2024-06-04 14:39:57,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 112 transitions, 1117 flow [2024-06-04 14:39:57,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:39:57,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:39:57,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-04 14:39:57,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771043771043771 [2024-06-04 14:39:57,133 INFO L175 Difference]: Start difference. First operand has 116 places, 94 transitions, 775 flow. Second operand 9 states and 112 transitions. [2024-06-04 14:39:57,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 112 transitions, 1117 flow [2024-06-04 14:39:57,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 112 transitions, 1032 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 14:39:57,155 INFO L231 Difference]: Finished difference. Result has 117 places, 96 transitions, 775 flow [2024-06-04 14:39:57,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=775, PETRI_PLACES=117, PETRI_TRANSITIONS=96} [2024-06-04 14:39:57,156 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 85 predicate places. [2024-06-04 14:39:57,156 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 96 transitions, 775 flow [2024-06-04 14:39:57,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:57,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:57,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:57,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 14:39:57,156 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 14:39:57,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:57,157 INFO L85 PathProgramCache]: Analyzing trace with hash -321357931, now seen corresponding path program 4 times [2024-06-04 14:39:57,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:57,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502749593] [2024-06-04 14:39:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:57,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:57,755 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 14:39:57,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:57,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502749593] [2024-06-04 14:39:57,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502749593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:57,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:57,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:39:57,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789870886] [2024-06-04 14:39:57,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:57,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:39:57,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:57,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:39:57,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:39:57,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:57,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 96 transitions, 775 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:57,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:57,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:57,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:57,956 INFO L124 PetriNetUnfolderBase]: 359/629 cut-off events. [2024-06-04 14:39:57,956 INFO L125 PetriNetUnfolderBase]: For 22422/22422 co-relation queries the response was YES. [2024-06-04 14:39:57,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3729 conditions, 629 events. 359/629 cut-off events. For 22422/22422 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2518 event pairs, 73 based on Foata normal form. 1/629 useless extension candidates. Maximal degree in co-relation 3671. Up to 538 conditions per place. [2024-06-04 14:39:57,960 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 77 selfloop transitions, 32 changer transitions 0/111 dead transitions. [2024-06-04 14:39:57,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 111 transitions, 1113 flow [2024-06-04 14:39:57,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:39:57,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:39:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-04 14:39:57,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-04 14:39:57,989 INFO L175 Difference]: Start difference. First operand has 117 places, 96 transitions, 775 flow. Second operand 9 states and 110 transitions. [2024-06-04 14:39:57,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 111 transitions, 1113 flow [2024-06-04 14:39:58,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 111 transitions, 1055 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 14:39:58,013 INFO L231 Difference]: Finished difference. Result has 120 places, 98 transitions, 808 flow [2024-06-04 14:39:58,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=808, PETRI_PLACES=120, PETRI_TRANSITIONS=98} [2024-06-04 14:39:58,013 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 88 predicate places. [2024-06-04 14:39:58,014 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 98 transitions, 808 flow [2024-06-04 14:39:58,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:58,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:58,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:58,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 14:39:58,014 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 14:39:58,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:58,015 INFO L85 PathProgramCache]: Analyzing trace with hash -321351235, now seen corresponding path program 4 times [2024-06-04 14:39:58,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:58,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523812892] [2024-06-04 14:39:58,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:58,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:58,634 INFO 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 14:39:58,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:58,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523812892] [2024-06-04 14:39:58,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523812892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:58,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:58,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:39:58,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171183682] [2024-06-04 14:39:58,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:58,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:39:58,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:58,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:39:58,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:39:58,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:58,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 98 transitions, 808 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:58,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:58,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:58,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:58,905 INFO L124 PetriNetUnfolderBase]: 398/692 cut-off events. [2024-06-04 14:39:58,905 INFO L125 PetriNetUnfolderBase]: For 28752/28752 co-relation queries the response was YES. [2024-06-04 14:39:58,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4183 conditions, 692 events. 398/692 cut-off events. For 28752/28752 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2868 event pairs, 72 based on Foata normal form. 3/694 useless extension candidates. Maximal degree in co-relation 4124. Up to 422 conditions per place. [2024-06-04 14:39:58,910 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 85 selfloop transitions, 42 changer transitions 0/129 dead transitions. [2024-06-04 14:39:58,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 129 transitions, 1384 flow [2024-06-04 14:39:58,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:39:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:39:58,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-04 14:39:58,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-04 14:39:58,913 INFO L175 Difference]: Start difference. First operand has 120 places, 98 transitions, 808 flow. Second operand 9 states and 126 transitions. [2024-06-04 14:39:58,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 129 transitions, 1384 flow [2024-06-04 14:39:58,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 129 transitions, 1325 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 14:39:58,940 INFO L231 Difference]: Finished difference. Result has 123 places, 104 transitions, 886 flow [2024-06-04 14:39:58,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=886, PETRI_PLACES=123, PETRI_TRANSITIONS=104} [2024-06-04 14:39:58,940 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 91 predicate places. [2024-06-04 14:39:58,940 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 104 transitions, 886 flow [2024-06-04 14:39:58,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:58,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:58,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:58,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 14:39:58,941 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 14:39:58,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:58,941 INFO L85 PathProgramCache]: Analyzing trace with hash -321357745, now seen corresponding path program 5 times [2024-06-04 14:39:58,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:58,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248844430] [2024-06-04 14:39:58,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:58,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:39:59,654 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 14:39:59,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:39:59,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248844430] [2024-06-04 14:39:59,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248844430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:39:59,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:39:59,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:39:59,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521161323] [2024-06-04 14:39:59,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:39:59,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:39:59,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:39:59,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:39:59,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:39:59,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:39:59,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 104 transitions, 886 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:59,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:39:59,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:39:59,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:39:59,933 INFO L124 PetriNetUnfolderBase]: 392/683 cut-off events. [2024-06-04 14:39:59,933 INFO L125 PetriNetUnfolderBase]: For 28655/28655 co-relation queries the response was YES. [2024-06-04 14:39:59,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4160 conditions, 683 events. 392/683 cut-off events. For 28655/28655 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2818 event pairs, 70 based on Foata normal form. 3/685 useless extension candidates. Maximal degree in co-relation 4100. Up to 418 conditions per place. [2024-06-04 14:39:59,938 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 83 selfloop transitions, 43 changer transitions 0/128 dead transitions. [2024-06-04 14:39:59,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 128 transitions, 1344 flow [2024-06-04 14:39:59,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:39:59,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:39:59,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-04 14:39:59,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-04 14:39:59,939 INFO L175 Difference]: Start difference. First operand has 123 places, 104 transitions, 886 flow. Second operand 9 states and 124 transitions. [2024-06-04 14:39:59,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 128 transitions, 1344 flow [2024-06-04 14:39:59,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 128 transitions, 1280 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-04 14:39:59,967 INFO L231 Difference]: Finished difference. Result has 128 places, 104 transitions, 913 flow [2024-06-04 14:39:59,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=913, PETRI_PLACES=128, PETRI_TRANSITIONS=104} [2024-06-04 14:39:59,968 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 96 predicate places. [2024-06-04 14:39:59,968 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 104 transitions, 913 flow [2024-06-04 14:39:59,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:39:59,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:39:59,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:39:59,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 14:39:59,969 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 14:39:59,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:39:59,969 INFO L85 PathProgramCache]: Analyzing trace with hash -321120595, now seen corresponding path program 6 times [2024-06-04 14:39:59,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:39:59,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917962255] [2024-06-04 14:39:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:39:59,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:39:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:00,646 INFO 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 14:40:00,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:00,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917962255] [2024-06-04 14:40:00,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917962255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:00,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:00,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:00,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190508561] [2024-06-04 14:40:00,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:00,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:00,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:00,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:00,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:00,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:00,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 104 transitions, 913 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:00,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:00,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:00,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:00,952 INFO L124 PetriNetUnfolderBase]: 386/674 cut-off events. [2024-06-04 14:40:00,952 INFO L125 PetriNetUnfolderBase]: For 28249/28249 co-relation queries the response was YES. [2024-06-04 14:40:00,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4079 conditions, 674 events. 386/674 cut-off events. For 28249/28249 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2770 event pairs, 74 based on Foata normal form. 3/676 useless extension candidates. Maximal degree in co-relation 4018. Up to 414 conditions per place. [2024-06-04 14:40:00,957 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 78 selfloop transitions, 45 changer transitions 0/125 dead transitions. [2024-06-04 14:40:00,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 125 transitions, 1287 flow [2024-06-04 14:40:00,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:00,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-04 14:40:00,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-04 14:40:00,958 INFO L175 Difference]: Start difference. First operand has 128 places, 104 transitions, 913 flow. Second operand 9 states and 120 transitions. [2024-06-04 14:40:00,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 125 transitions, 1287 flow [2024-06-04 14:40:00,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 125 transitions, 1203 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:00,988 INFO L231 Difference]: Finished difference. Result has 130 places, 104 transitions, 924 flow [2024-06-04 14:40:00,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=924, PETRI_PLACES=130, PETRI_TRANSITIONS=104} [2024-06-04 14:40:00,989 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 98 predicate places. [2024-06-04 14:40:00,989 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 104 transitions, 924 flow [2024-06-04 14:40:00,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:00,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:00,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:00,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 14:40:00,990 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 14:40:00,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:00,990 INFO L85 PathProgramCache]: Analyzing trace with hash -894105845, now seen corresponding path program 7 times [2024-06-04 14:40:00,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:00,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845603525] [2024-06-04 14:40:00,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:00,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:01,602 INFO 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 14:40:01,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:01,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845603525] [2024-06-04 14:40:01,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845603525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:01,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:01,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:01,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374453590] [2024-06-04 14:40:01,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:01,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:01,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:01,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:01,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:01,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:01,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 104 transitions, 924 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:01,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:01,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:01,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:01,934 INFO L124 PetriNetUnfolderBase]: 410/713 cut-off events. [2024-06-04 14:40:01,935 INFO L125 PetriNetUnfolderBase]: For 32066/32066 co-relation queries the response was YES. [2024-06-04 14:40:01,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4395 conditions, 713 events. 410/713 cut-off events. For 32066/32066 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2961 event pairs, 78 based on Foata normal form. 3/715 useless extension candidates. Maximal degree in co-relation 4333. Up to 585 conditions per place. [2024-06-04 14:40:01,939 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 101 selfloop transitions, 24 changer transitions 0/127 dead transitions. [2024-06-04 14:40:01,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 127 transitions, 1418 flow [2024-06-04 14:40:01,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:01,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:01,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-04 14:40:01,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-04 14:40:01,941 INFO L175 Difference]: Start difference. First operand has 130 places, 104 transitions, 924 flow. Second operand 9 states and 114 transitions. [2024-06-04 14:40:01,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 127 transitions, 1418 flow [2024-06-04 14:40:01,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 127 transitions, 1304 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 14:40:01,975 INFO L231 Difference]: Finished difference. Result has 130 places, 108 transitions, 907 flow [2024-06-04 14:40:01,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=907, PETRI_PLACES=130, PETRI_TRANSITIONS=108} [2024-06-04 14:40:01,976 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 98 predicate places. [2024-06-04 14:40:01,976 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 108 transitions, 907 flow [2024-06-04 14:40:01,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:01,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:01,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:01,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 14:40:01,976 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 14:40:01,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:01,977 INFO L85 PathProgramCache]: Analyzing trace with hash -675346841, now seen corresponding path program 5 times [2024-06-04 14:40:01,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:01,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377615186] [2024-06-04 14:40:01,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:01,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:02,579 INFO 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 14:40:02,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:02,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377615186] [2024-06-04 14:40:02,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377615186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:02,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:02,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:02,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211906385] [2024-06-04 14:40:02,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:02,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:02,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:02,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:02,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:02,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:02,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 108 transitions, 907 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:02,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:02,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:02,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:02,843 INFO L124 PetriNetUnfolderBase]: 408/710 cut-off events. [2024-06-04 14:40:02,844 INFO L125 PetriNetUnfolderBase]: For 31283/31283 co-relation queries the response was YES. [2024-06-04 14:40:02,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4293 conditions, 710 events. 408/710 cut-off events. For 31283/31283 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2955 event pairs, 86 based on Foata normal form. 1/710 useless extension candidates. Maximal degree in co-relation 4230. Up to 686 conditions per place. [2024-06-04 14:40:02,848 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 101 selfloop transitions, 14 changer transitions 0/117 dead transitions. [2024-06-04 14:40:02,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 117 transitions, 1157 flow [2024-06-04 14:40:02,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:02,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 14:40:02,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32996632996632996 [2024-06-04 14:40:02,849 INFO L175 Difference]: Start difference. First operand has 130 places, 108 transitions, 907 flow. Second operand 9 states and 98 transitions. [2024-06-04 14:40:02,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 117 transitions, 1157 flow [2024-06-04 14:40:02,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 117 transitions, 1097 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:02,890 INFO L231 Difference]: Finished difference. Result has 133 places, 108 transitions, 880 flow [2024-06-04 14:40:02,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=847, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=880, PETRI_PLACES=133, PETRI_TRANSITIONS=108} [2024-06-04 14:40:02,891 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 101 predicate places. [2024-06-04 14:40:02,891 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 108 transitions, 880 flow [2024-06-04 14:40:02,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:02,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:02,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:02,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 14:40:02,892 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 14:40:02,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:02,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1763747097, now seen corresponding path program 8 times [2024-06-04 14:40:02,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:02,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715012437] [2024-06-04 14:40:02,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:02,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:03,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:03,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715012437] [2024-06-04 14:40:03,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715012437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:03,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:03,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:03,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673469935] [2024-06-04 14:40:03,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:03,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:03,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:03,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:03,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:03,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:03,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 108 transitions, 880 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:03,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:03,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:03,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:03,825 INFO L124 PetriNetUnfolderBase]: 417/725 cut-off events. [2024-06-04 14:40:03,826 INFO L125 PetriNetUnfolderBase]: For 34204/34204 co-relation queries the response was YES. [2024-06-04 14:40:03,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4315 conditions, 725 events. 417/725 cut-off events. For 34204/34204 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3046 event pairs, 66 based on Foata normal form. 3/727 useless extension candidates. Maximal degree in co-relation 4251. Up to 590 conditions per place. [2024-06-04 14:40:03,831 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 97 selfloop transitions, 29 changer transitions 0/128 dead transitions. [2024-06-04 14:40:03,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 128 transitions, 1274 flow [2024-06-04 14:40:03,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:03,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:03,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-04 14:40:03,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-04 14:40:03,832 INFO L175 Difference]: Start difference. First operand has 133 places, 108 transitions, 880 flow. Second operand 9 states and 111 transitions. [2024-06-04 14:40:03,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 128 transitions, 1274 flow [2024-06-04 14:40:03,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 128 transitions, 1202 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 14:40:03,876 INFO L231 Difference]: Finished difference. Result has 132 places, 110 transitions, 887 flow [2024-06-04 14:40:03,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=887, PETRI_PLACES=132, PETRI_TRANSITIONS=110} [2024-06-04 14:40:03,876 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 100 predicate places. [2024-06-04 14:40:03,876 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 110 transitions, 887 flow [2024-06-04 14:40:03,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:03,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:03,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:03,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 14:40:03,877 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 14:40:03,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:03,877 INFO L85 PathProgramCache]: Analyzing trace with hash 2059212065, now seen corresponding path program 1 times [2024-06-04 14:40:03,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:03,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604789442] [2024-06-04 14:40:03,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:03,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:04,627 INFO 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 14:40:04,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:04,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604789442] [2024-06-04 14:40:04,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604789442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:04,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:04,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:04,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513180860] [2024-06-04 14:40:04,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:04,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:04,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:04,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:04,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:04,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:04,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 110 transitions, 887 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:04,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:04,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:04,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:05,022 INFO L124 PetriNetUnfolderBase]: 413/719 cut-off events. [2024-06-04 14:40:05,022 INFO L125 PetriNetUnfolderBase]: For 33411/33411 co-relation queries the response was YES. [2024-06-04 14:40:05,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4303 conditions, 719 events. 413/719 cut-off events. For 33411/33411 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2999 event pairs, 80 based on Foata normal form. 2/720 useless extension candidates. Maximal degree in co-relation 4238. Up to 682 conditions per place. [2024-06-04 14:40:05,027 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 108 selfloop transitions, 14 changer transitions 0/124 dead transitions. [2024-06-04 14:40:05,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 124 transitions, 1177 flow [2024-06-04 14:40:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-04 14:40:05,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3400673400673401 [2024-06-04 14:40:05,028 INFO L175 Difference]: Start difference. First operand has 132 places, 110 transitions, 887 flow. Second operand 9 states and 101 transitions. [2024-06-04 14:40:05,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 124 transitions, 1177 flow [2024-06-04 14:40:05,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 124 transitions, 1067 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:05,078 INFO L231 Difference]: Finished difference. Result has 133 places, 112 transitions, 834 flow [2024-06-04 14:40:05,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=834, PETRI_PLACES=133, PETRI_TRANSITIONS=112} [2024-06-04 14:40:05,080 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 101 predicate places. [2024-06-04 14:40:05,080 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 112 transitions, 834 flow [2024-06-04 14:40:05,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:05,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:05,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:05,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 14:40:05,085 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 14:40:05,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:05,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1763753607, now seen corresponding path program 9 times [2024-06-04 14:40:05,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:05,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539058437] [2024-06-04 14:40:05,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:05,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:05,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:05,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:05,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539058437] [2024-06-04 14:40:05,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539058437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:05,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:05,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:05,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842858196] [2024-06-04 14:40:05,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:05,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:05,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:05,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:05,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:05,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:05,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 112 transitions, 834 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:05,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:05,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:05,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:06,121 INFO L124 PetriNetUnfolderBase]: 407/710 cut-off events. [2024-06-04 14:40:06,121 INFO L125 PetriNetUnfolderBase]: For 32769/32769 co-relation queries the response was YES. [2024-06-04 14:40:06,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4093 conditions, 710 events. 407/710 cut-off events. For 32769/32769 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2992 event pairs, 63 based on Foata normal form. 3/712 useless extension candidates. Maximal degree in co-relation 4027. Up to 580 conditions per place. [2024-06-04 14:40:06,125 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 101 selfloop transitions, 27 changer transitions 0/130 dead transitions. [2024-06-04 14:40:06,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 130 transitions, 1220 flow [2024-06-04 14:40:06,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:06,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-04 14:40:06,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771043771043771 [2024-06-04 14:40:06,126 INFO L175 Difference]: Start difference. First operand has 133 places, 112 transitions, 834 flow. Second operand 9 states and 112 transitions. [2024-06-04 14:40:06,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 130 transitions, 1220 flow [2024-06-04 14:40:06,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 130 transitions, 1175 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:06,178 INFO L231 Difference]: Finished difference. Result has 135 places, 112 transitions, 848 flow [2024-06-04 14:40:06,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=848, PETRI_PLACES=135, PETRI_TRANSITIONS=112} [2024-06-04 14:40:06,179 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 103 predicate places. [2024-06-04 14:40:06,179 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 112 transitions, 848 flow [2024-06-04 14:40:06,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:06,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:06,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:40:06,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 14:40:06,179 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 14:40:06,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:06,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2049084117, now seen corresponding path program 10 times [2024-06-04 14:40:06,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:06,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117249594] [2024-06-04 14:40:06,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:06,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:06,848 INFO 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 14:40:06,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:06,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117249594] [2024-06-04 14:40:06,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117249594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:06,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:06,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:06,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515476677] [2024-06-04 14:40:06,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:06,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:06,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:06,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:06,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:06,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:06,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 112 transitions, 848 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:06,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:06,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:06,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:07,172 INFO L124 PetriNetUnfolderBase]: 401/701 cut-off events. [2024-06-04 14:40:07,172 INFO L125 PetriNetUnfolderBase]: For 31740/31740 co-relation queries the response was YES. [2024-06-04 14:40:07,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4005 conditions, 701 events. 401/701 cut-off events. For 31740/31740 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2939 event pairs, 75 based on Foata normal form. 3/703 useless extension candidates. Maximal degree in co-relation 3938. Up to 651 conditions per place. [2024-06-04 14:40:07,177 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 111 selfloop transitions, 14 changer transitions 0/127 dead transitions. [2024-06-04 14:40:07,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 127 transitions, 1136 flow [2024-06-04 14:40:07,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:07,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:07,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 14:40:07,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-04 14:40:07,178 INFO L175 Difference]: Start difference. First operand has 135 places, 112 transitions, 848 flow. Second operand 9 states and 104 transitions. [2024-06-04 14:40:07,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 127 transitions, 1136 flow [2024-06-04 14:40:07,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 127 transitions, 1083 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:07,226 INFO L231 Difference]: Finished difference. Result has 137 places, 112 transitions, 828 flow [2024-06-04 14:40:07,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=828, PETRI_PLACES=137, PETRI_TRANSITIONS=112} [2024-06-04 14:40:07,226 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 105 predicate places. [2024-06-04 14:40:07,227 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 112 transitions, 828 flow [2024-06-04 14:40:07,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:07,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:07,227 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 14:40:07,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 14:40:07,227 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 14:40:07,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:07,228 INFO L85 PathProgramCache]: Analyzing trace with hash 907042122, now seen corresponding path program 1 times [2024-06-04 14:40:07,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:07,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588642202] [2024-06-04 14:40:07,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:07,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:08,048 INFO 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 14:40:08,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:08,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588642202] [2024-06-04 14:40:08,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588642202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:08,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:08,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:08,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180776614] [2024-06-04 14:40:08,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:08,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:08,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:08,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:08,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:08,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:08,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 112 transitions, 828 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:08,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:08,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:08,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:08,470 INFO L124 PetriNetUnfolderBase]: 404/706 cut-off events. [2024-06-04 14:40:08,470 INFO L125 PetriNetUnfolderBase]: For 31242/31242 co-relation queries the response was YES. [2024-06-04 14:40:08,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4037 conditions, 706 events. 404/706 cut-off events. For 31242/31242 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2967 event pairs, 82 based on Foata normal form. 1/706 useless extension candidates. Maximal degree in co-relation 3969. Up to 644 conditions per place. [2024-06-04 14:40:08,474 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 120 selfloop transitions, 18 changer transitions 0/140 dead transitions. [2024-06-04 14:40:08,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 140 transitions, 1186 flow [2024-06-04 14:40:08,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:08,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:08,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 14:40:08,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-04 14:40:08,476 INFO L175 Difference]: Start difference. First operand has 137 places, 112 transitions, 828 flow. Second operand 11 states and 131 transitions. [2024-06-04 14:40:08,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 140 transitions, 1186 flow [2024-06-04 14:40:08,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 140 transitions, 1125 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 14:40:08,533 INFO L231 Difference]: Finished difference. Result has 138 places, 114 transitions, 831 flow [2024-06-04 14:40:08,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=831, PETRI_PLACES=138, PETRI_TRANSITIONS=114} [2024-06-04 14:40:08,533 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 106 predicate places. [2024-06-04 14:40:08,534 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 114 transitions, 831 flow [2024-06-04 14:40:08,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:08,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:08,534 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 14:40:08,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 14:40:08,534 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 14:40:08,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:08,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1950521727, now seen corresponding path program 1 times [2024-06-04 14:40:08,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:08,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802374207] [2024-06-04 14:40:08,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:08,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:09,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:09,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802374207] [2024-06-04 14:40:09,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802374207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:09,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:09,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:09,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482062480] [2024-06-04 14:40:09,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:09,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:09,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:09,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:09,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:09,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:09,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 114 transitions, 831 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:09,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:09,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:09,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:09,674 INFO L124 PetriNetUnfolderBase]: 413/721 cut-off events. [2024-06-04 14:40:09,674 INFO L125 PetriNetUnfolderBase]: For 34641/34641 co-relation queries the response was YES. [2024-06-04 14:40:09,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4135 conditions, 721 events. 413/721 cut-off events. For 34641/34641 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3041 event pairs, 81 based on Foata normal form. 3/723 useless extension candidates. Maximal degree in co-relation 4066. Up to 664 conditions per place. [2024-06-04 14:40:09,679 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 122 selfloop transitions, 16 changer transitions 0/140 dead transitions. [2024-06-04 14:40:09,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 140 transitions, 1189 flow [2024-06-04 14:40:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:09,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-04 14:40:09,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-04 14:40:09,680 INFO L175 Difference]: Start difference. First operand has 138 places, 114 transitions, 831 flow. Second operand 10 states and 121 transitions. [2024-06-04 14:40:09,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 140 transitions, 1189 flow [2024-06-04 14:40:09,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 140 transitions, 1143 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 14:40:09,747 INFO L231 Difference]: Finished difference. Result has 139 places, 116 transitions, 848 flow [2024-06-04 14:40:09,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=848, PETRI_PLACES=139, PETRI_TRANSITIONS=116} [2024-06-04 14:40:09,748 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 107 predicate places. [2024-06-04 14:40:09,748 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 116 transitions, 848 flow [2024-06-04 14:40:09,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:09,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:09,748 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 14:40:09,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 14:40:09,749 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 14:40:09,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:09,749 INFO L85 PathProgramCache]: Analyzing trace with hash 910851557, now seen corresponding path program 2 times [2024-06-04 14:40:09,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:09,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209573984] [2024-06-04 14:40:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:09,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:10,481 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 14:40:10,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:10,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209573984] [2024-06-04 14:40:10,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209573984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:10,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:10,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:10,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612057606] [2024-06-04 14:40:10,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:10,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:10,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:10,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:10,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:10,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:10,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 116 transitions, 848 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:10,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:10,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:10,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:10,871 INFO L124 PetriNetUnfolderBase]: 447/776 cut-off events. [2024-06-04 14:40:10,871 INFO L125 PetriNetUnfolderBase]: For 41708/41708 co-relation queries the response was YES. [2024-06-04 14:40:10,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4677 conditions, 776 events. 447/776 cut-off events. For 41708/41708 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3354 event pairs, 56 based on Foata normal form. 3/778 useless extension candidates. Maximal degree in co-relation 4607. Up to 368 conditions per place. [2024-06-04 14:40:10,877 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 93 selfloop transitions, 60 changer transitions 0/155 dead transitions. [2024-06-04 14:40:10,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 155 transitions, 1502 flow [2024-06-04 14:40:10,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:10,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:10,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-04 14:40:10,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-04 14:40:10,879 INFO L175 Difference]: Start difference. First operand has 139 places, 116 transitions, 848 flow. Second operand 10 states and 142 transitions. [2024-06-04 14:40:10,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 155 transitions, 1502 flow [2024-06-04 14:40:10,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 155 transitions, 1455 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:10,959 INFO L231 Difference]: Finished difference. Result has 141 places, 122 transitions, 1008 flow [2024-06-04 14:40:10,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1008, PETRI_PLACES=141, PETRI_TRANSITIONS=122} [2024-06-04 14:40:10,960 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 109 predicate places. [2024-06-04 14:40:10,960 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 122 transitions, 1008 flow [2024-06-04 14:40:10,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:10,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:10,961 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 14:40:10,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 14:40:10,963 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 14:40:10,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:10,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1571462038, now seen corresponding path program 2 times [2024-06-04 14:40:10,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:10,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433173073] [2024-06-04 14:40:10,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:10,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:11,775 INFO 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 14:40:11,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:11,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433173073] [2024-06-04 14:40:11,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433173073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:11,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:11,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:11,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15645240] [2024-06-04 14:40:11,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:11,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:11,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:11,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:11,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:11,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:11,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 122 transitions, 1008 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:11,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:11,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:11,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:12,053 INFO L124 PetriNetUnfolderBase]: 450/781 cut-off events. [2024-06-04 14:40:12,054 INFO L125 PetriNetUnfolderBase]: For 41613/41613 co-relation queries the response was YES. [2024-06-04 14:40:12,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4894 conditions, 781 events. 450/781 cut-off events. For 41613/41613 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3348 event pairs, 97 based on Foata normal form. 1/781 useless extension candidates. Maximal degree in co-relation 4823. Up to 688 conditions per place. [2024-06-04 14:40:12,059 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 104 selfloop transitions, 37 changer transitions 0/143 dead transitions. [2024-06-04 14:40:12,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 143 transitions, 1358 flow [2024-06-04 14:40:12,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:12,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:12,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 14:40:12,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-04 14:40:12,065 INFO L175 Difference]: Start difference. First operand has 141 places, 122 transitions, 1008 flow. Second operand 10 states and 122 transitions. [2024-06-04 14:40:12,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 143 transitions, 1358 flow [2024-06-04 14:40:12,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 143 transitions, 1277 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-04 14:40:12,155 INFO L231 Difference]: Finished difference. Result has 146 places, 124 transitions, 1032 flow [2024-06-04 14:40:12,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1032, PETRI_PLACES=146, PETRI_TRANSITIONS=124} [2024-06-04 14:40:12,155 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 114 predicate places. [2024-06-04 14:40:12,155 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 124 transitions, 1032 flow [2024-06-04 14:40:12,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:12,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:12,156 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 14:40:12,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 14:40:12,156 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 14:40:12,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:12,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1950371997, now seen corresponding path program 3 times [2024-06-04 14:40:12,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:12,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914220609] [2024-06-04 14:40:12,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:12,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:12,857 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 14:40:12,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:12,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914220609] [2024-06-04 14:40:12,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914220609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:12,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:12,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:12,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652271606] [2024-06-04 14:40:12,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:12,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:12,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:12,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:12,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:12,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:12,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 124 transitions, 1032 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:12,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:12,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:12,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:13,172 INFO L124 PetriNetUnfolderBase]: 444/772 cut-off events. [2024-06-04 14:40:13,172 INFO L125 PetriNetUnfolderBase]: For 41987/41987 co-relation queries the response was YES. [2024-06-04 14:40:13,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4769 conditions, 772 events. 444/772 cut-off events. For 41987/41987 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3338 event pairs, 50 based on Foata normal form. 3/774 useless extension candidates. Maximal degree in co-relation 4696. Up to 369 conditions per place. [2024-06-04 14:40:13,177 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 91 selfloop transitions, 61 changer transitions 0/154 dead transitions. [2024-06-04 14:40:13,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 154 transitions, 1510 flow [2024-06-04 14:40:13,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:13,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-04 14:40:13,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-04 14:40:13,180 INFO L175 Difference]: Start difference. First operand has 146 places, 124 transitions, 1032 flow. Second operand 10 states and 138 transitions. [2024-06-04 14:40:13,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 154 transitions, 1510 flow [2024-06-04 14:40:13,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 154 transitions, 1407 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:13,241 INFO L231 Difference]: Finished difference. Result has 148 places, 124 transitions, 1056 flow [2024-06-04 14:40:13,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1056, PETRI_PLACES=148, PETRI_TRANSITIONS=124} [2024-06-04 14:40:13,241 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 116 predicate places. [2024-06-04 14:40:13,242 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 124 transitions, 1056 flow [2024-06-04 14:40:13,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:13,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:13,242 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 14:40:13,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 14:40:13,242 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 14:40:13,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:13,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1054949477, now seen corresponding path program 4 times [2024-06-04 14:40:13,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:13,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204010175] [2024-06-04 14:40:13,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:13,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:14,018 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 14:40:14,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:14,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204010175] [2024-06-04 14:40:14,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204010175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:14,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:14,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:14,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511232342] [2024-06-04 14:40:14,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:14,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:14,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:14,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:14,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:14,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:14,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 124 transitions, 1056 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:14,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:14,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:14,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:14,434 INFO L124 PetriNetUnfolderBase]: 468/811 cut-off events. [2024-06-04 14:40:14,435 INFO L125 PetriNetUnfolderBase]: For 47796/47796 co-relation queries the response was YES. [2024-06-04 14:40:14,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5232 conditions, 811 events. 468/811 cut-off events. For 47796/47796 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3556 event pairs, 70 based on Foata normal form. 3/813 useless extension candidates. Maximal degree in co-relation 5158. Up to 389 conditions per place. [2024-06-04 14:40:14,441 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 94 selfloop transitions, 60 changer transitions 0/156 dead transitions. [2024-06-04 14:40:14,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 156 transitions, 1692 flow [2024-06-04 14:40:14,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:14,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:14,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-04 14:40:14,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-04 14:40:14,442 INFO L175 Difference]: Start difference. First operand has 148 places, 124 transitions, 1056 flow. Second operand 10 states and 137 transitions. [2024-06-04 14:40:14,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 156 transitions, 1692 flow [2024-06-04 14:40:14,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 156 transitions, 1557 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 14:40:14,506 INFO L231 Difference]: Finished difference. Result has 149 places, 128 transitions, 1106 flow [2024-06-04 14:40:14,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1106, PETRI_PLACES=149, PETRI_TRANSITIONS=128} [2024-06-04 14:40:14,506 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 117 predicate places. [2024-06-04 14:40:14,506 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 128 transitions, 1106 flow [2024-06-04 14:40:14,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:14,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:14,507 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 14:40:14,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 14:40:14,507 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 14:40:14,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:14,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1054747667, now seen corresponding path program 5 times [2024-06-04 14:40:14,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:14,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827622340] [2024-06-04 14:40:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:14,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:15,182 INFO 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 14:40:15,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:15,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827622340] [2024-06-04 14:40:15,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827622340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:15,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:15,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:15,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617067326] [2024-06-04 14:40:15,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:15,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:15,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:15,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:15,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:15,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:15,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 128 transitions, 1106 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:15,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:15,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:15,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:15,580 INFO L124 PetriNetUnfolderBase]: 477/826 cut-off events. [2024-06-04 14:40:15,580 INFO L125 PetriNetUnfolderBase]: For 49871/49871 co-relation queries the response was YES. [2024-06-04 14:40:15,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5318 conditions, 826 events. 477/826 cut-off events. For 49871/49871 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3644 event pairs, 66 based on Foata normal form. 3/828 useless extension candidates. Maximal degree in co-relation 5243. Up to 397 conditions per place. [2024-06-04 14:40:15,586 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 99 selfloop transitions, 59 changer transitions 0/160 dead transitions. [2024-06-04 14:40:15,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 160 transitions, 1730 flow [2024-06-04 14:40:15,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:15,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:15,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-04 14:40:15,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-04 14:40:15,601 INFO L175 Difference]: Start difference. First operand has 149 places, 128 transitions, 1106 flow. Second operand 10 states and 141 transitions. [2024-06-04 14:40:15,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 160 transitions, 1730 flow [2024-06-04 14:40:15,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 160 transitions, 1633 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:15,692 INFO L231 Difference]: Finished difference. Result has 153 places, 130 transitions, 1162 flow [2024-06-04 14:40:15,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1162, PETRI_PLACES=153, PETRI_TRANSITIONS=130} [2024-06-04 14:40:15,693 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 121 predicate places. [2024-06-04 14:40:15,693 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 130 transitions, 1162 flow [2024-06-04 14:40:15,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:15,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:15,693 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 14:40:15,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 14:40:15,694 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 14:40:15,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:15,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1870587909, now seen corresponding path program 6 times [2024-06-04 14:40:15,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:15,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274203657] [2024-06-04 14:40:15,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:15,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:16,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:16,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274203657] [2024-06-04 14:40:16,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274203657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:16,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:16,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:16,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737038271] [2024-06-04 14:40:16,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:16,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:16,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:16,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:16,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:16,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:16,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 130 transitions, 1162 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:16,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:16,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:16,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:16,663 INFO L124 PetriNetUnfolderBase]: 471/817 cut-off events. [2024-06-04 14:40:16,663 INFO L125 PetriNetUnfolderBase]: For 48130/48130 co-relation queries the response was YES. [2024-06-04 14:40:16,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5159 conditions, 817 events. 471/817 cut-off events. For 48130/48130 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3606 event pairs, 64 based on Foata normal form. 3/819 useless extension candidates. Maximal degree in co-relation 5083. Up to 393 conditions per place. [2024-06-04 14:40:16,668 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 97 selfloop transitions, 60 changer transitions 0/159 dead transitions. [2024-06-04 14:40:16,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 159 transitions, 1654 flow [2024-06-04 14:40:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:16,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:16,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-04 14:40:16,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-04 14:40:16,669 INFO L175 Difference]: Start difference. First operand has 153 places, 130 transitions, 1162 flow. Second operand 10 states and 139 transitions. [2024-06-04 14:40:16,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 159 transitions, 1654 flow [2024-06-04 14:40:16,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 159 transitions, 1495 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:16,737 INFO L231 Difference]: Finished difference. Result has 155 places, 130 transitions, 1128 flow [2024-06-04 14:40:16,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1128, PETRI_PLACES=155, PETRI_TRANSITIONS=130} [2024-06-04 14:40:16,738 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 123 predicate places. [2024-06-04 14:40:16,738 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 130 transitions, 1128 flow [2024-06-04 14:40:16,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:16,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:16,738 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 14:40:16,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 14:40:16,739 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 14:40:16,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:16,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1870587754, now seen corresponding path program 3 times [2024-06-04 14:40:16,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:16,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630644254] [2024-06-04 14:40:16,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:16,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:17,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:17,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:17,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630644254] [2024-06-04 14:40:17,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630644254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:17,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:17,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:17,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593527535] [2024-06-04 14:40:17,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:17,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:17,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:17,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:17,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:17,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:17,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 130 transitions, 1128 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:17,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:17,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:17,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:17,758 INFO L124 PetriNetUnfolderBase]: 474/822 cut-off events. [2024-06-04 14:40:17,759 INFO L125 PetriNetUnfolderBase]: For 46904/46904 co-relation queries the response was YES. [2024-06-04 14:40:17,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5183 conditions, 822 events. 474/822 cut-off events. For 46904/46904 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3613 event pairs, 99 based on Foata normal form. 1/822 useless extension candidates. Maximal degree in co-relation 5106. Up to 729 conditions per place. [2024-06-04 14:40:17,764 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 111 selfloop transitions, 35 changer transitions 0/148 dead transitions. [2024-06-04 14:40:17,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 148 transitions, 1484 flow [2024-06-04 14:40:17,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:17,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:17,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 14:40:17,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:40:17,765 INFO L175 Difference]: Start difference. First operand has 155 places, 130 transitions, 1128 flow. Second operand 10 states and 120 transitions. [2024-06-04 14:40:17,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 148 transitions, 1484 flow [2024-06-04 14:40:17,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 148 transitions, 1359 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 14:40:17,853 INFO L231 Difference]: Finished difference. Result has 156 places, 132 transitions, 1108 flow [2024-06-04 14:40:17,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1108, PETRI_PLACES=156, PETRI_TRANSITIONS=132} [2024-06-04 14:40:17,853 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 124 predicate places. [2024-06-04 14:40:17,853 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 132 transitions, 1108 flow [2024-06-04 14:40:17,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:17,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:17,854 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 14:40:17,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 14:40:17,854 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 14:40:17,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:17,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1982671877, now seen corresponding path program 7 times [2024-06-04 14:40:17,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:17,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733660769] [2024-06-04 14:40:17,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:17,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:18,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:18,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733660769] [2024-06-04 14:40:18,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733660769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:18,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:18,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:18,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249717329] [2024-06-04 14:40:18,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:18,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:18,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:18,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:18,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:18,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:18,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 132 transitions, 1108 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:18,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:18,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:18,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:18,701 INFO L124 PetriNetUnfolderBase]: 498/861 cut-off events. [2024-06-04 14:40:18,701 INFO L125 PetriNetUnfolderBase]: For 55633/55633 co-relation queries the response was YES. [2024-06-04 14:40:18,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5485 conditions, 861 events. 498/861 cut-off events. For 55633/55633 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3815 event pairs, 92 based on Foata normal form. 3/863 useless extension candidates. Maximal degree in co-relation 5407. Up to 418 conditions per place. [2024-06-04 14:40:18,707 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 98 selfloop transitions, 63 changer transitions 0/163 dead transitions. [2024-06-04 14:40:18,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 163 transitions, 1768 flow [2024-06-04 14:40:18,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:18,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-04 14:40:18,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-04 14:40:18,708 INFO L175 Difference]: Start difference. First operand has 156 places, 132 transitions, 1108 flow. Second operand 10 states and 138 transitions. [2024-06-04 14:40:18,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 163 transitions, 1768 flow [2024-06-04 14:40:18,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 163 transitions, 1679 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:18,794 INFO L231 Difference]: Finished difference. Result has 158 places, 136 transitions, 1206 flow [2024-06-04 14:40:18,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1206, PETRI_PLACES=158, PETRI_TRANSITIONS=136} [2024-06-04 14:40:18,795 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 126 predicate places. [2024-06-04 14:40:18,795 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 136 transitions, 1206 flow [2024-06-04 14:40:18,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:18,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:18,795 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 14:40:18,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 14:40:18,796 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 14:40:18,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:18,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1743441510, now seen corresponding path program 1 times [2024-06-04 14:40:18,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:18,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774719869] [2024-06-04 14:40:18,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:18,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:20,004 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 14:40:20,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:20,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774719869] [2024-06-04 14:40:20,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774719869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:20,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:20,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:20,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052356198] [2024-06-04 14:40:20,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:20,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:20,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:20,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:20,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:20,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:40:20,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 136 transitions, 1206 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 14:40:20,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:20,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:40:20,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:20,426 INFO L124 PetriNetUnfolderBase]: 447/796 cut-off events. [2024-06-04 14:40:20,426 INFO L125 PetriNetUnfolderBase]: For 58810/58819 co-relation queries the response was YES. [2024-06-04 14:40:20,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5380 conditions, 796 events. 447/796 cut-off events. For 58810/58819 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3636 event pairs, 69 based on Foata normal form. 5/788 useless extension candidates. Maximal degree in co-relation 5301. Up to 696 conditions per place. [2024-06-04 14:40:20,432 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 121 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2024-06-04 14:40:20,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 155 transitions, 1550 flow [2024-06-04 14:40:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-04 14:40:20,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-04 14:40:20,434 INFO L175 Difference]: Start difference. First operand has 158 places, 136 transitions, 1206 flow. Second operand 9 states and 116 transitions. [2024-06-04 14:40:20,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 155 transitions, 1550 flow [2024-06-04 14:40:20,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 155 transitions, 1433 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:20,532 INFO L231 Difference]: Finished difference. Result has 162 places, 139 transitions, 1164 flow [2024-06-04 14:40:20,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1164, PETRI_PLACES=162, PETRI_TRANSITIONS=139} [2024-06-04 14:40:20,532 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 130 predicate places. [2024-06-04 14:40:20,532 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 139 transitions, 1164 flow [2024-06-04 14:40:20,532 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 14:40:20,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:20,533 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 14:40:20,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 14:40:20,533 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 14:40:20,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1982671722, now seen corresponding path program 4 times [2024-06-04 14:40:20,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:20,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891434889] [2024-06-04 14:40:20,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:20,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:21,336 INFO 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 14:40:21,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:21,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891434889] [2024-06-04 14:40:21,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891434889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:21,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:21,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:21,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991005407] [2024-06-04 14:40:21,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:21,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:21,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:21,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:21,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:21,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:21,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 139 transitions, 1164 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:21,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:21,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:21,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:21,624 INFO L124 PetriNetUnfolderBase]: 505/874 cut-off events. [2024-06-04 14:40:21,624 INFO L125 PetriNetUnfolderBase]: For 56908/56908 co-relation queries the response was YES. [2024-06-04 14:40:21,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5668 conditions, 874 events. 505/874 cut-off events. For 56908/56908 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3892 event pairs, 105 based on Foata normal form. 1/874 useless extension candidates. Maximal degree in co-relation 5587. Up to 781 conditions per place. [2024-06-04 14:40:21,631 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 118 selfloop transitions, 34 changer transitions 0/154 dead transitions. [2024-06-04 14:40:21,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 154 transitions, 1528 flow [2024-06-04 14:40:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:21,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 14:40:21,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-04 14:40:21,632 INFO L175 Difference]: Start difference. First operand has 162 places, 139 transitions, 1164 flow. Second operand 10 states and 118 transitions. [2024-06-04 14:40:21,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 154 transitions, 1528 flow [2024-06-04 14:40:21,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 154 transitions, 1482 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:21,742 INFO L231 Difference]: Finished difference. Result has 166 places, 141 transitions, 1225 flow [2024-06-04 14:40:21,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1225, PETRI_PLACES=166, PETRI_TRANSITIONS=141} [2024-06-04 14:40:21,743 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 134 predicate places. [2024-06-04 14:40:21,743 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 141 transitions, 1225 flow [2024-06-04 14:40:21,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:21,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:21,743 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 14:40:21,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 14:40:21,743 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 14:40:21,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:21,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1372154513, now seen corresponding path program 8 times [2024-06-04 14:40:21,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:21,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783416942] [2024-06-04 14:40:21,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:21,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:22,449 INFO 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 14:40:22,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:22,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783416942] [2024-06-04 14:40:22,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783416942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:22,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:22,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:22,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251014002] [2024-06-04 14:40:22,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:22,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:22,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:22,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:22,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:22,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:22,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 141 transitions, 1225 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:22,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:22,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:22,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:22,844 INFO L124 PetriNetUnfolderBase]: 514/889 cut-off events. [2024-06-04 14:40:22,844 INFO L125 PetriNetUnfolderBase]: For 62197/62197 co-relation queries the response was YES. [2024-06-04 14:40:22,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5812 conditions, 889 events. 514/889 cut-off events. For 62197/62197 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3974 event pairs, 92 based on Foata normal form. 3/891 useless extension candidates. Maximal degree in co-relation 5730. Up to 439 conditions per place. [2024-06-04 14:40:22,851 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 104 selfloop transitions, 64 changer transitions 0/170 dead transitions. [2024-06-04 14:40:22,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 170 transitions, 1895 flow [2024-06-04 14:40:22,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:22,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:22,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-04 14:40:22,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-04 14:40:22,852 INFO L175 Difference]: Start difference. First operand has 166 places, 141 transitions, 1225 flow. Second operand 10 states and 139 transitions. [2024-06-04 14:40:22,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 170 transitions, 1895 flow [2024-06-04 14:40:22,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 170 transitions, 1804 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:22,956 INFO L231 Difference]: Finished difference. Result has 168 places, 143 transitions, 1295 flow [2024-06-04 14:40:22,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1295, PETRI_PLACES=168, PETRI_TRANSITIONS=143} [2024-06-04 14:40:22,957 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 136 predicate places. [2024-06-04 14:40:22,957 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 143 transitions, 1295 flow [2024-06-04 14:40:22,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:22,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:22,957 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 14:40:22,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 14:40:22,957 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 14:40:22,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:22,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1371952703, now seen corresponding path program 9 times [2024-06-04 14:40:22,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:22,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907079532] [2024-06-04 14:40:22,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:22,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:23,709 INFO 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 14:40:23,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:23,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907079532] [2024-06-04 14:40:23,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907079532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:23,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:23,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:23,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74842394] [2024-06-04 14:40:23,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:23,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:23,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:23,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:23,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:23,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:23,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 143 transitions, 1295 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:23,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:23,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:23,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:24,096 INFO L124 PetriNetUnfolderBase]: 523/904 cut-off events. [2024-06-04 14:40:24,096 INFO L125 PetriNetUnfolderBase]: For 64892/64892 co-relation queries the response was YES. [2024-06-04 14:40:24,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6037 conditions, 904 events. 523/904 cut-off events. For 64892/64892 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4063 event pairs, 96 based on Foata normal form. 3/906 useless extension candidates. Maximal degree in co-relation 5954. Up to 447 conditions per place. [2024-06-04 14:40:24,103 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 105 selfloop transitions, 65 changer transitions 0/172 dead transitions. [2024-06-04 14:40:24,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 172 transitions, 1977 flow [2024-06-04 14:40:24,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:24,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:24,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-04 14:40:24,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-04 14:40:24,104 INFO L175 Difference]: Start difference. First operand has 168 places, 143 transitions, 1295 flow. Second operand 10 states and 140 transitions. [2024-06-04 14:40:24,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 172 transitions, 1977 flow [2024-06-04 14:40:24,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 172 transitions, 1844 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:24,221 INFO L231 Difference]: Finished difference. Result has 171 places, 145 transitions, 1329 flow [2024-06-04 14:40:24,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1329, PETRI_PLACES=171, PETRI_TRANSITIONS=145} [2024-06-04 14:40:24,221 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2024-06-04 14:40:24,221 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 145 transitions, 1329 flow [2024-06-04 14:40:24,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:24,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:24,222 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 14:40:24,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 14:40:24,222 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 14:40:24,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:24,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1364802863, now seen corresponding path program 10 times [2024-06-04 14:40:24,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:24,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759166477] [2024-06-04 14:40:24,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:24,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:24,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:24,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:24,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759166477] [2024-06-04 14:40:24,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759166477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:24,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:24,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:24,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568189969] [2024-06-04 14:40:24,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:24,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:24,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:24,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:24,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:25,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:25,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 145 transitions, 1329 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:25,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:25,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:25,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:25,275 INFO L124 PetriNetUnfolderBase]: 517/895 cut-off events. [2024-06-04 14:40:25,275 INFO L125 PetriNetUnfolderBase]: For 62000/62000 co-relation queries the response was YES. [2024-06-04 14:40:25,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5846 conditions, 895 events. 517/895 cut-off events. For 62000/62000 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4039 event pairs, 104 based on Foata normal form. 3/897 useless extension candidates. Maximal degree in co-relation 5762. Up to 443 conditions per place. [2024-06-04 14:40:25,282 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 96 selfloop transitions, 71 changer transitions 0/169 dead transitions. [2024-06-04 14:40:25,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 169 transitions, 1851 flow [2024-06-04 14:40:25,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:25,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:25,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-04 14:40:25,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-04 14:40:25,284 INFO L175 Difference]: Start difference. First operand has 171 places, 145 transitions, 1329 flow. Second operand 10 states and 134 transitions. [2024-06-04 14:40:25,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 169 transitions, 1851 flow [2024-06-04 14:40:25,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 169 transitions, 1705 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:25,399 INFO L231 Difference]: Finished difference. Result has 174 places, 145 transitions, 1330 flow [2024-06-04 14:40:25,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1330, PETRI_PLACES=174, PETRI_TRANSITIONS=145} [2024-06-04 14:40:25,399 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 142 predicate places. [2024-06-04 14:40:25,400 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 145 transitions, 1330 flow [2024-06-04 14:40:25,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:25,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:25,400 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 14:40:25,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 14:40:25,400 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 14:40:25,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:25,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2111647277, now seen corresponding path program 11 times [2024-06-04 14:40:25,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:25,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948813638] [2024-06-04 14:40:25,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:25,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:26,158 INFO 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 14:40:26,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:26,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948813638] [2024-06-04 14:40:26,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948813638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:26,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:26,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:26,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978442701] [2024-06-04 14:40:26,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:26,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:26,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:26,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:26,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:26,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:26,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 145 transitions, 1330 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:26,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:26,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:26,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:26,560 INFO L124 PetriNetUnfolderBase]: 541/934 cut-off events. [2024-06-04 14:40:26,560 INFO L125 PetriNetUnfolderBase]: For 69462/69462 co-relation queries the response was YES. [2024-06-04 14:40:26,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6246 conditions, 934 events. 541/934 cut-off events. For 69462/69462 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4254 event pairs, 106 based on Foata normal form. 3/936 useless extension candidates. Maximal degree in co-relation 6161. Up to 749 conditions per place. [2024-06-04 14:40:26,567 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 139 selfloop transitions, 30 changer transitions 0/171 dead transitions. [2024-06-04 14:40:26,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 171 transitions, 2038 flow [2024-06-04 14:40:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:26,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 14:40:26,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-04 14:40:26,568 INFO L175 Difference]: Start difference. First operand has 174 places, 145 transitions, 1330 flow. Second operand 10 states and 127 transitions. [2024-06-04 14:40:26,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 171 transitions, 2038 flow [2024-06-04 14:40:26,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 171 transitions, 1854 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-04 14:40:26,706 INFO L231 Difference]: Finished difference. Result has 173 places, 149 transitions, 1279 flow [2024-06-04 14:40:26,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1279, PETRI_PLACES=173, PETRI_TRANSITIONS=149} [2024-06-04 14:40:26,707 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 141 predicate places. [2024-06-04 14:40:26,707 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 149 transitions, 1279 flow [2024-06-04 14:40:26,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:26,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:26,707 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 14:40:26,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 14:40:26,708 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 14:40:26,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:26,708 INFO L85 PathProgramCache]: Analyzing trace with hash -620806904, now seen corresponding path program 2 times [2024-06-04 14:40:26,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:26,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49638653] [2024-06-04 14:40:26,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:26,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:27,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:27,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49638653] [2024-06-04 14:40:27,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49638653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:27,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:27,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:27,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676786957] [2024-06-04 14:40:27,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:27,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:27,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:27,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:27,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:27,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:40:27,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 149 transitions, 1279 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 14:40:27,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:27,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:40:27,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:28,095 INFO L124 PetriNetUnfolderBase]: 490/865 cut-off events. [2024-06-04 14:40:28,095 INFO L125 PetriNetUnfolderBase]: For 75865/75872 co-relation queries the response was YES. [2024-06-04 14:40:28,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5841 conditions, 865 events. 490/865 cut-off events. For 75865/75872 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4062 event pairs, 83 based on Foata normal form. 7/859 useless extension candidates. Maximal degree in co-relation 5755. Up to 790 conditions per place. [2024-06-04 14:40:28,101 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 135 selfloop transitions, 16 changer transitions 0/165 dead transitions. [2024-06-04 14:40:28,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 165 transitions, 1641 flow [2024-06-04 14:40:28,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:28,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:28,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-04 14:40:28,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-04 14:40:28,102 INFO L175 Difference]: Start difference. First operand has 173 places, 149 transitions, 1279 flow. Second operand 9 states and 111 transitions. [2024-06-04 14:40:28,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 165 transitions, 1641 flow [2024-06-04 14:40:28,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 165 transitions, 1562 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:28,217 INFO L231 Difference]: Finished difference. Result has 176 places, 152 transitions, 1271 flow [2024-06-04 14:40:28,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1271, PETRI_PLACES=176, PETRI_TRANSITIONS=152} [2024-06-04 14:40:28,218 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 144 predicate places. [2024-06-04 14:40:28,219 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 152 transitions, 1271 flow [2024-06-04 14:40:28,219 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 14:40:28,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:28,219 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 14:40:28,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 14:40:28,219 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 14:40:28,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:28,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1158413851, now seen corresponding path program 12 times [2024-06-04 14:40:28,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:28,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551794278] [2024-06-04 14:40:28,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:28,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:28,885 INFO 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 14:40:28,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:28,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551794278] [2024-06-04 14:40:28,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551794278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:28,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:28,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:28,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621430279] [2024-06-04 14:40:28,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:28,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:28,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:28,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:28,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:28,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:28,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 152 transitions, 1271 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:28,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:28,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:28,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:29,294 INFO L124 PetriNetUnfolderBase]: 569/981 cut-off events. [2024-06-04 14:40:29,294 INFO L125 PetriNetUnfolderBase]: For 79517/79517 co-relation queries the response was YES. [2024-06-04 14:40:29,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6557 conditions, 981 events. 569/981 cut-off events. For 79517/79517 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4533 event pairs, 86 based on Foata normal form. 3/983 useless extension candidates. Maximal degree in co-relation 6469. Up to 777 conditions per place. [2024-06-04 14:40:29,302 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 138 selfloop transitions, 38 changer transitions 0/178 dead transitions. [2024-06-04 14:40:29,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 178 transitions, 1999 flow [2024-06-04 14:40:29,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:29,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:29,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-04 14:40:29,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-04 14:40:29,304 INFO L175 Difference]: Start difference. First operand has 176 places, 152 transitions, 1271 flow. Second operand 10 states and 125 transitions. [2024-06-04 14:40:29,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 178 transitions, 1999 flow [2024-06-04 14:40:29,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 178 transitions, 1957 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:29,451 INFO L231 Difference]: Finished difference. Result has 180 places, 156 transitions, 1366 flow [2024-06-04 14:40:29,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1366, PETRI_PLACES=180, PETRI_TRANSITIONS=156} [2024-06-04 14:40:29,452 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2024-06-04 14:40:29,452 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 156 transitions, 1366 flow [2024-06-04 14:40:29,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:29,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:29,452 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 14:40:29,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 14:40:29,453 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 14:40:29,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:29,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1158419586, now seen corresponding path program 5 times [2024-06-04 14:40:29,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:29,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180059372] [2024-06-04 14:40:29,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:29,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:30,370 INFO 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 14:40:30,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:30,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180059372] [2024-06-04 14:40:30,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180059372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:30,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:30,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:30,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763414359] [2024-06-04 14:40:30,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:30,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:30,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:30,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:30,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:30,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:30,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 156 transitions, 1366 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:30,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:30,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:30,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:30,748 INFO L124 PetriNetUnfolderBase]: 567/978 cut-off events. [2024-06-04 14:40:30,749 INFO L125 PetriNetUnfolderBase]: For 76640/76640 co-relation queries the response was YES. [2024-06-04 14:40:30,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6592 conditions, 978 events. 567/978 cut-off events. For 76640/76640 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4536 event pairs, 122 based on Foata normal form. 1/978 useless extension candidates. Maximal degree in co-relation 6503. Up to 951 conditions per place. [2024-06-04 14:40:30,756 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 150 selfloop transitions, 16 changer transitions 0/168 dead transitions. [2024-06-04 14:40:30,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 168 transitions, 1754 flow [2024-06-04 14:40:30,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:30,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:30,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 14:40:30,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3242424242424242 [2024-06-04 14:40:30,758 INFO L175 Difference]: Start difference. First operand has 180 places, 156 transitions, 1366 flow. Second operand 10 states and 107 transitions. [2024-06-04 14:40:30,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 168 transitions, 1754 flow [2024-06-04 14:40:30,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 168 transitions, 1594 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:30,928 INFO L231 Difference]: Finished difference. Result has 182 places, 158 transitions, 1281 flow [2024-06-04 14:40:30,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1281, PETRI_PLACES=182, PETRI_TRANSITIONS=158} [2024-06-04 14:40:30,929 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 150 predicate places. [2024-06-04 14:40:30,929 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 158 transitions, 1281 flow [2024-06-04 14:40:30,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:30,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:30,929 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 14:40:30,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 14:40:30,930 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 14:40:30,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:30,930 INFO L85 PathProgramCache]: Analyzing trace with hash -628441181, now seen corresponding path program 13 times [2024-06-04 14:40:30,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:30,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712596019] [2024-06-04 14:40:30,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:30,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:31,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:31,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:31,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712596019] [2024-06-04 14:40:31,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712596019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:31,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:31,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:31,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320758242] [2024-06-04 14:40:31,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:31,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:31,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:31,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:31,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:31,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:31,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 158 transitions, 1281 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:31,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:31,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:31,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:32,049 INFO L124 PetriNetUnfolderBase]: 561/969 cut-off events. [2024-06-04 14:40:32,049 INFO L125 PetriNetUnfolderBase]: For 76251/76251 co-relation queries the response was YES. [2024-06-04 14:40:32,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6258 conditions, 969 events. 561/969 cut-off events. For 76251/76251 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4476 event pairs, 84 based on Foata normal form. 3/971 useless extension candidates. Maximal degree in co-relation 6168. Up to 770 conditions per place. [2024-06-04 14:40:32,055 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 136 selfloop transitions, 41 changer transitions 0/179 dead transitions. [2024-06-04 14:40:32,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 179 transitions, 1835 flow [2024-06-04 14:40:32,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:32,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:32,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 14:40:32,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-04 14:40:32,057 INFO L175 Difference]: Start difference. First operand has 182 places, 158 transitions, 1281 flow. Second operand 10 states and 123 transitions. [2024-06-04 14:40:32,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 179 transitions, 1835 flow [2024-06-04 14:40:32,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 179 transitions, 1762 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:32,197 INFO L231 Difference]: Finished difference. Result has 184 places, 158 transitions, 1295 flow [2024-06-04 14:40:32,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1295, PETRI_PLACES=184, PETRI_TRANSITIONS=158} [2024-06-04 14:40:32,198 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 152 predicate places. [2024-06-04 14:40:32,198 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 158 transitions, 1295 flow [2024-06-04 14:40:32,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:32,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:32,198 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 14:40:32,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 14:40:32,198 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 14:40:32,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:32,199 INFO L85 PathProgramCache]: Analyzing trace with hash -902623776, now seen corresponding path program 3 times [2024-06-04 14:40:32,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:32,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013765886] [2024-06-04 14:40:32,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:32,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:33,181 INFO 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 14:40:33,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:33,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013765886] [2024-06-04 14:40:33,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013765886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:33,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:33,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 14:40:33,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957537829] [2024-06-04 14:40:33,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:33,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 14:40:33,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:33,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 14:40:33,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 14:40:33,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:40:33,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 158 transitions, 1295 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 14:40:33,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:33,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:40:33,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:33,523 INFO L124 PetriNetUnfolderBase]: 510/900 cut-off events. [2024-06-04 14:40:33,524 INFO L125 PetriNetUnfolderBase]: For 83518/83525 co-relation queries the response was YES. [2024-06-04 14:40:33,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6081 conditions, 900 events. 510/900 cut-off events. For 83518/83525 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4313 event pairs, 87 based on Foata normal form. 7/894 useless extension candidates. Maximal degree in co-relation 5990. Up to 837 conditions per place. [2024-06-04 14:40:33,531 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 145 selfloop transitions, 13 changer transitions 0/172 dead transitions. [2024-06-04 14:40:33,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 172 transitions, 1666 flow [2024-06-04 14:40:33,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:33,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:33,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 14:40:33,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-04 14:40:33,532 INFO L175 Difference]: Start difference. First operand has 184 places, 158 transitions, 1295 flow. Second operand 9 states and 107 transitions. [2024-06-04 14:40:33,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 172 transitions, 1666 flow [2024-06-04 14:40:33,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 172 transitions, 1588 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:33,714 INFO L231 Difference]: Finished difference. Result has 186 places, 161 transitions, 1285 flow [2024-06-04 14:40:33,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1285, PETRI_PLACES=186, PETRI_TRANSITIONS=161} [2024-06-04 14:40:33,714 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 154 predicate places. [2024-06-04 14:40:33,715 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 161 transitions, 1285 flow [2024-06-04 14:40:33,715 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 14:40:33,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:33,715 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 14:40:33,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 14:40:33,715 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 14:40:33,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:33,715 INFO L85 PathProgramCache]: Analyzing trace with hash -47904406, now seen corresponding path program 4 times [2024-06-04 14:40:33,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:33,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396011937] [2024-06-04 14:40:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:33,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:34,641 INFO 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 14:40:34,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:34,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396011937] [2024-06-04 14:40:34,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396011937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:34,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:34,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:34,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118947792] [2024-06-04 14:40:34,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:34,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:34,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:34,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:34,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:34,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:40:34,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 161 transitions, 1285 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 14:40:34,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:34,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:40:34,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:35,100 INFO L124 PetriNetUnfolderBase]: 514/910 cut-off events. [2024-06-04 14:40:35,100 INFO L125 PetriNetUnfolderBase]: For 86151/86156 co-relation queries the response was YES. [2024-06-04 14:40:35,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6159 conditions, 910 events. 514/910 cut-off events. For 86151/86156 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4337 event pairs, 83 based on Foata normal form. 7/906 useless extension candidates. Maximal degree in co-relation 6066. Up to 840 conditions per place. [2024-06-04 14:40:35,107 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 147 selfloop transitions, 13 changer transitions 0/174 dead transitions. [2024-06-04 14:40:35,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 174 transitions, 1647 flow [2024-06-04 14:40:35,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:35,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:35,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 14:40:35,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:40:35,108 INFO L175 Difference]: Start difference. First operand has 186 places, 161 transitions, 1285 flow. Second operand 9 states and 108 transitions. [2024-06-04 14:40:35,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 174 transitions, 1647 flow [2024-06-04 14:40:35,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 174 transitions, 1607 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 14:40:35,245 INFO L231 Difference]: Finished difference. Result has 189 places, 162 transitions, 1293 flow [2024-06-04 14:40:35,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1293, PETRI_PLACES=189, PETRI_TRANSITIONS=162} [2024-06-04 14:40:35,245 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 157 predicate places. [2024-06-04 14:40:35,246 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 162 transitions, 1293 flow [2024-06-04 14:40:35,246 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 14:40:35,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:35,246 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 14:40:35,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 14:40:35,246 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 14:40:35,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:35,247 INFO L85 PathProgramCache]: Analyzing trace with hash -628233791, now seen corresponding path program 14 times [2024-06-04 14:40:35,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:35,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722365917] [2024-06-04 14:40:35,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:35,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:35,797 INFO 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 14:40:35,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:35,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722365917] [2024-06-04 14:40:35,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722365917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:35,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:35,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:35,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521452595] [2024-06-04 14:40:35,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:35,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:35,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:35,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:35,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:35,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:35,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 162 transitions, 1293 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:35,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:35,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:35,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:36,182 INFO L124 PetriNetUnfolderBase]: 563/976 cut-off events. [2024-06-04 14:40:36,182 INFO L125 PetriNetUnfolderBase]: For 77247/77247 co-relation queries the response was YES. [2024-06-04 14:40:36,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6255 conditions, 976 events. 563/976 cut-off events. For 77247/77247 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4557 event pairs, 108 based on Foata normal form. 3/978 useless extension candidates. Maximal degree in co-relation 6161. Up to 782 conditions per place. [2024-06-04 14:40:36,189 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 143 selfloop transitions, 37 changer transitions 0/182 dead transitions. [2024-06-04 14:40:36,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 182 transitions, 1859 flow [2024-06-04 14:40:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:36,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-04 14:40:36,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-04 14:40:36,190 INFO L175 Difference]: Start difference. First operand has 189 places, 162 transitions, 1293 flow. Second operand 10 states and 125 transitions. [2024-06-04 14:40:36,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 182 transitions, 1859 flow [2024-06-04 14:40:36,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 182 transitions, 1807 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:36,322 INFO L231 Difference]: Finished difference. Result has 192 places, 162 transitions, 1320 flow [2024-06-04 14:40:36,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1320, PETRI_PLACES=192, PETRI_TRANSITIONS=162} [2024-06-04 14:40:36,322 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 160 predicate places. [2024-06-04 14:40:36,322 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 162 transitions, 1320 flow [2024-06-04 14:40:36,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:36,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:36,322 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 14:40:36,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 14:40:36,323 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 14:40:36,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:36,323 INFO L85 PathProgramCache]: Analyzing trace with hash -902900823, now seen corresponding path program 15 times [2024-06-04 14:40:36,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:36,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930614092] [2024-06-04 14:40:36,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:36,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:36,917 INFO 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 14:40:36,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:36,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930614092] [2024-06-04 14:40:36,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930614092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:36,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:36,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:36,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997676265] [2024-06-04 14:40:36,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:36,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:36,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:36,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:36,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:36,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:36,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 162 transitions, 1320 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:36,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:36,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:36,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:37,270 INFO L124 PetriNetUnfolderBase]: 557/967 cut-off events. [2024-06-04 14:40:37,271 INFO L125 PetriNetUnfolderBase]: For 72762/72762 co-relation queries the response was YES. [2024-06-04 14:40:37,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6075 conditions, 967 events. 557/967 cut-off events. For 72762/72762 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4510 event pairs, 104 based on Foata normal form. 3/969 useless extension candidates. Maximal degree in co-relation 5980. Up to 904 conditions per place. [2024-06-04 14:40:37,280 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 160 selfloop transitions, 17 changer transitions 0/179 dead transitions. [2024-06-04 14:40:37,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 179 transitions, 1734 flow [2024-06-04 14:40:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:37,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 14:40:37,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 14:40:37,281 INFO L175 Difference]: Start difference. First operand has 192 places, 162 transitions, 1320 flow. Second operand 10 states and 115 transitions. [2024-06-04 14:40:37,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 179 transitions, 1734 flow [2024-06-04 14:40:37,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 179 transitions, 1650 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:37,421 INFO L231 Difference]: Finished difference. Result has 194 places, 162 transitions, 1275 flow [2024-06-04 14:40:37,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1275, PETRI_PLACES=194, PETRI_TRANSITIONS=162} [2024-06-04 14:40:37,422 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 162 predicate places. [2024-06-04 14:40:37,422 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 162 transitions, 1275 flow [2024-06-04 14:40:37,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:37,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:37,422 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 14:40:37,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 14:40:37,423 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 14:40:37,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:37,423 INFO L85 PathProgramCache]: Analyzing trace with hash -363379936, now seen corresponding path program 5 times [2024-06-04 14:40:37,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:37,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076934135] [2024-06-04 14:40:37,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:37,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:38,564 INFO 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 14:40:38,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:38,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076934135] [2024-06-04 14:40:38,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076934135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:38,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:38,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:38,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437279253] [2024-06-04 14:40:38,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:38,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:38,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:38,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:38,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:38,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-04 14:40:38,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 162 transitions, 1275 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 14:40:38,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:38,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-04 14:40:38,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:39,019 INFO L124 PetriNetUnfolderBase]: 499/887 cut-off events. [2024-06-04 14:40:39,020 INFO L125 PetriNetUnfolderBase]: For 73449/73454 co-relation queries the response was YES. [2024-06-04 14:40:39,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5564 conditions, 887 events. 499/887 cut-off events. For 73449/73454 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4241 event pairs, 77 based on Foata normal form. 7/883 useless extension candidates. Maximal degree in co-relation 5468. Up to 817 conditions per place. [2024-06-04 14:40:39,028 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 148 selfloop transitions, 12 changer transitions 0/174 dead transitions. [2024-06-04 14:40:39,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 174 transitions, 1621 flow [2024-06-04 14:40:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:40:39,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:40:39,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-04 14:40:39,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569023569023569 [2024-06-04 14:40:39,030 INFO L175 Difference]: Start difference. First operand has 194 places, 162 transitions, 1275 flow. Second operand 9 states and 106 transitions. [2024-06-04 14:40:39,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 174 transitions, 1621 flow [2024-06-04 14:40:39,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 174 transitions, 1528 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-04 14:40:39,157 INFO L231 Difference]: Finished difference. Result has 191 places, 162 transitions, 1210 flow [2024-06-04 14:40:39,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1210, PETRI_PLACES=191, PETRI_TRANSITIONS=162} [2024-06-04 14:40:39,158 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 159 predicate places. [2024-06-04 14:40:39,158 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 162 transitions, 1210 flow [2024-06-04 14:40:39,158 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 14:40:39,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:39,158 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 14:40:39,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 14:40:39,159 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 14:40:39,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:39,159 INFO L85 PathProgramCache]: Analyzing trace with hash -58956216, now seen corresponding path program 1 times [2024-06-04 14:40:39,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:39,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608955636] [2024-06-04 14:40:39,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:39,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:40,085 INFO 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 14:40:40,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:40,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608955636] [2024-06-04 14:40:40,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608955636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:40,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:40,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:40:40,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005098138] [2024-06-04 14:40:40,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:40,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:40:40,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:40,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:40:40,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:40:40,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:40,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 162 transitions, 1210 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:40,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:40,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:40,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:40,492 INFO L124 PetriNetUnfolderBase]: 561/974 cut-off events. [2024-06-04 14:40:40,493 INFO L125 PetriNetUnfolderBase]: For 67268/67268 co-relation queries the response was YES. [2024-06-04 14:40:40,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5814 conditions, 974 events. 561/974 cut-off events. For 67268/67268 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4555 event pairs, 100 based on Foata normal form. 2/975 useless extension candidates. Maximal degree in co-relation 5717. Up to 934 conditions per place. [2024-06-04 14:40:40,500 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 165 selfloop transitions, 16 changer transitions 0/183 dead transitions. [2024-06-04 14:40:40,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 183 transitions, 1654 flow [2024-06-04 14:40:40,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:40,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 14:40:40,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:40:40,501 INFO L175 Difference]: Start difference. First operand has 191 places, 162 transitions, 1210 flow. Second operand 10 states and 110 transitions. [2024-06-04 14:40:40,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 183 transitions, 1654 flow [2024-06-04 14:40:40,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 183 transitions, 1592 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:40,666 INFO L231 Difference]: Finished difference. Result has 196 places, 170 transitions, 1264 flow [2024-06-04 14:40:40,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1264, PETRI_PLACES=196, PETRI_TRANSITIONS=170} [2024-06-04 14:40:40,667 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 164 predicate places. [2024-06-04 14:40:40,667 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 170 transitions, 1264 flow [2024-06-04 14:40:40,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:40,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:40,667 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 14:40:40,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 14:40:40,667 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 14:40:40,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:40,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1946467028, now seen corresponding path program 1 times [2024-06-04 14:40:40,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:40,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936384264] [2024-06-04 14:40:40,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:40,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:41,554 INFO 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 14:40:41,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:41,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936384264] [2024-06-04 14:40:41,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936384264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:41,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:41,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:40:41,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795589137] [2024-06-04 14:40:41,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:41,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:40:41,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:41,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:40:41,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:40:41,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:41,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 170 transitions, 1264 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:41,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:41,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:41,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:41,977 INFO L124 PetriNetUnfolderBase]: 572/995 cut-off events. [2024-06-04 14:40:41,977 INFO L125 PetriNetUnfolderBase]: For 74311/74311 co-relation queries the response was YES. [2024-06-04 14:40:41,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6241 conditions, 995 events. 572/995 cut-off events. For 74311/74311 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4677 event pairs, 86 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 6140. Up to 898 conditions per place. [2024-06-04 14:40:41,986 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 180 selfloop transitions, 20 changer transitions 0/202 dead transitions. [2024-06-04 14:40:41,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 202 transitions, 1924 flow [2024-06-04 14:40:41,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:40:41,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:40:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-04 14:40:41,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35858585858585856 [2024-06-04 14:40:41,987 INFO L175 Difference]: Start difference. First operand has 196 places, 170 transitions, 1264 flow. Second operand 12 states and 142 transitions. [2024-06-04 14:40:41,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 202 transitions, 1924 flow [2024-06-04 14:40:42,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 202 transitions, 1855 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:42,156 INFO L231 Difference]: Finished difference. Result has 201 places, 172 transitions, 1289 flow [2024-06-04 14:40:42,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1289, PETRI_PLACES=201, PETRI_TRANSITIONS=172} [2024-06-04 14:40:42,158 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 169 predicate places. [2024-06-04 14:40:42,158 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 172 transitions, 1289 flow [2024-06-04 14:40:42,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:42,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:42,158 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 14:40:42,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 14:40:42,158 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 14:40:42,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:42,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1869919888, now seen corresponding path program 1 times [2024-06-04 14:40:42,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:42,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960085912] [2024-06-04 14:40:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:42,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:43,105 INFO 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 14:40:43,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:43,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960085912] [2024-06-04 14:40:43,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960085912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:43,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:43,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:40:43,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275792735] [2024-06-04 14:40:43,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:43,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:40:43,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:43,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:40:43,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:40:43,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:43,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 172 transitions, 1289 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:43,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:43,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:43,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:43,601 INFO L124 PetriNetUnfolderBase]: 581/1010 cut-off events. [2024-06-04 14:40:43,601 INFO L125 PetriNetUnfolderBase]: For 78700/78700 co-relation queries the response was YES. [2024-06-04 14:40:43,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6302 conditions, 1010 events. 581/1010 cut-off events. For 78700/78700 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4787 event pairs, 102 based on Foata normal form. 3/1012 useless extension candidates. Maximal degree in co-relation 6202. Up to 926 conditions per place. [2024-06-04 14:40:43,609 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 181 selfloop transitions, 23 changer transitions 0/206 dead transitions. [2024-06-04 14:40:43,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 206 transitions, 1825 flow [2024-06-04 14:40:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:40:43,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:40:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-04 14:40:43,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35664335664335667 [2024-06-04 14:40:43,611 INFO L175 Difference]: Start difference. First operand has 201 places, 172 transitions, 1289 flow. Second operand 13 states and 153 transitions. [2024-06-04 14:40:43,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 206 transitions, 1825 flow [2024-06-04 14:40:43,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 206 transitions, 1774 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:43,807 INFO L231 Difference]: Finished difference. Result has 206 places, 175 transitions, 1339 flow [2024-06-04 14:40:43,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1339, PETRI_PLACES=206, PETRI_TRANSITIONS=175} [2024-06-04 14:40:43,808 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 174 predicate places. [2024-06-04 14:40:43,808 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 175 transitions, 1339 flow [2024-06-04 14:40:43,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:43,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:43,809 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 14:40:43,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 14:40:43,809 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 14:40:43,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:43,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1869919764, now seen corresponding path program 2 times [2024-06-04 14:40:43,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:43,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413897885] [2024-06-04 14:40:43,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:43,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:44,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:44,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413897885] [2024-06-04 14:40:44,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413897885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:44,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:44,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:40:44,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915735472] [2024-06-04 14:40:44,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:44,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:40:44,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:44,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:40:44,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:40:44,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:44,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 175 transitions, 1339 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:44,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:44,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:44,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:45,175 INFO L124 PetriNetUnfolderBase]: 578/1005 cut-off events. [2024-06-04 14:40:45,176 INFO L125 PetriNetUnfolderBase]: For 73886/73886 co-relation queries the response was YES. [2024-06-04 14:40:45,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6254 conditions, 1005 events. 578/1005 cut-off events. For 73886/73886 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4752 event pairs, 103 based on Foata normal form. 2/1006 useless extension candidates. Maximal degree in co-relation 6152. Up to 937 conditions per place. [2024-06-04 14:40:45,184 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 182 selfloop transitions, 19 changer transitions 0/203 dead transitions. [2024-06-04 14:40:45,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 203 transitions, 1809 flow [2024-06-04 14:40:45,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:40:45,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:40:45,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-04 14:40:45,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-04 14:40:45,185 INFO L175 Difference]: Start difference. First operand has 206 places, 175 transitions, 1339 flow. Second operand 12 states and 140 transitions. [2024-06-04 14:40:45,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 203 transitions, 1809 flow [2024-06-04 14:40:45,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 203 transitions, 1718 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-04 14:40:45,352 INFO L231 Difference]: Finished difference. Result has 207 places, 175 transitions, 1290 flow [2024-06-04 14:40:45,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1290, PETRI_PLACES=207, PETRI_TRANSITIONS=175} [2024-06-04 14:40:45,352 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 175 predicate places. [2024-06-04 14:40:45,353 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 175 transitions, 1290 flow [2024-06-04 14:40:45,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:45,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:45,353 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 14:40:45,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 14:40:45,353 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 14:40:45,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:45,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1988007444, now seen corresponding path program 3 times [2024-06-04 14:40:45,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:45,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419359865] [2024-06-04 14:40:45,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:45,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:46,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:46,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419359865] [2024-06-04 14:40:46,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419359865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:46,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:46,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:40:46,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573878294] [2024-06-04 14:40:46,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:46,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:40:46,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:46,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:40:46,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:40:46,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:46,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 175 transitions, 1290 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:46,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:46,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:46,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:46,601 INFO L124 PetriNetUnfolderBase]: 582/1013 cut-off events. [2024-06-04 14:40:46,601 INFO L125 PetriNetUnfolderBase]: For 75883/75883 co-relation queries the response was YES. [2024-06-04 14:40:46,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6251 conditions, 1013 events. 582/1013 cut-off events. For 75883/75883 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4810 event pairs, 104 based on Foata normal form. 2/1014 useless extension candidates. Maximal degree in co-relation 6148. Up to 914 conditions per place. [2024-06-04 14:40:46,609 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 157 selfloop transitions, 38 changer transitions 0/197 dead transitions. [2024-06-04 14:40:46,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 197 transitions, 1754 flow [2024-06-04 14:40:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:46,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:46,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 14:40:46,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-04 14:40:46,610 INFO L175 Difference]: Start difference. First operand has 207 places, 175 transitions, 1290 flow. Second operand 11 states and 131 transitions. [2024-06-04 14:40:46,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 197 transitions, 1754 flow [2024-06-04 14:40:46,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 197 transitions, 1714 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-04 14:40:46,811 INFO L231 Difference]: Finished difference. Result has 207 places, 176 transitions, 1356 flow [2024-06-04 14:40:46,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1356, PETRI_PLACES=207, PETRI_TRANSITIONS=176} [2024-06-04 14:40:46,812 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 175 predicate places. [2024-06-04 14:40:46,812 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 176 transitions, 1356 flow [2024-06-04 14:40:46,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:46,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:46,813 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 14:40:46,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 14:40:46,813 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 14:40:46,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:46,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1988007568, now seen corresponding path program 2 times [2024-06-04 14:40:46,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:46,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184615587] [2024-06-04 14:40:46,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:46,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:47,623 INFO 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 14:40:47,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:47,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184615587] [2024-06-04 14:40:47,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184615587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:47,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:47,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:40:47,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416301758] [2024-06-04 14:40:47,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:47,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:40:47,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:47,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:40:47,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:40:47,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:47,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 176 transitions, 1356 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:47,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:47,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:47,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:48,060 INFO L124 PetriNetUnfolderBase]: 606/1052 cut-off events. [2024-06-04 14:40:48,060 INFO L125 PetriNetUnfolderBase]: For 89222/89222 co-relation queries the response was YES. [2024-06-04 14:40:48,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6795 conditions, 1052 events. 606/1052 cut-off events. For 89222/89222 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5056 event pairs, 53 based on Foata normal form. 3/1054 useless extension candidates. Maximal degree in co-relation 6691. Up to 546 conditions per place. [2024-06-04 14:40:48,068 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 122 selfloop transitions, 93 changer transitions 0/217 dead transitions. [2024-06-04 14:40:48,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 217 transitions, 2174 flow [2024-06-04 14:40:48,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:40:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:40:48,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-04 14:40:48,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-04 14:40:48,069 INFO L175 Difference]: Start difference. First operand has 207 places, 176 transitions, 1356 flow. Second operand 12 states and 164 transitions. [2024-06-04 14:40:48,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 217 transitions, 2174 flow [2024-06-04 14:40:48,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 217 transitions, 2078 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-04 14:40:48,280 INFO L231 Difference]: Finished difference. Result has 211 places, 182 transitions, 1564 flow [2024-06-04 14:40:48,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1564, PETRI_PLACES=211, PETRI_TRANSITIONS=182} [2024-06-04 14:40:48,281 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 179 predicate places. [2024-06-04 14:40:48,281 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 182 transitions, 1564 flow [2024-06-04 14:40:48,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:48,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:48,281 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 14:40:48,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 14:40:48,281 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 14:40:48,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:48,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1988185198, now seen corresponding path program 3 times [2024-06-04 14:40:48,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:48,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597760436] [2024-06-04 14:40:48,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:48,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:48,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:48,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597760436] [2024-06-04 14:40:48,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597760436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:48,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:48,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:40:48,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386826321] [2024-06-04 14:40:48,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:48,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:40:48,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:48,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:40:48,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:40:49,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:49,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 182 transitions, 1564 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:49,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:49,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:49,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:49,368 INFO L124 PetriNetUnfolderBase]: 600/1043 cut-off events. [2024-06-04 14:40:49,369 INFO L125 PetriNetUnfolderBase]: For 84075/84075 co-relation queries the response was YES. [2024-06-04 14:40:49,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6911 conditions, 1043 events. 600/1043 cut-off events. For 84075/84075 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5019 event pairs, 53 based on Foata normal form. 3/1045 useless extension candidates. Maximal degree in co-relation 6805. Up to 557 conditions per place. [2024-06-04 14:40:49,378 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 121 selfloop transitions, 89 changer transitions 0/212 dead transitions. [2024-06-04 14:40:49,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 212 transitions, 2120 flow [2024-06-04 14:40:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:49,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:49,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-04 14:40:49,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-04 14:40:49,379 INFO L175 Difference]: Start difference. First operand has 211 places, 182 transitions, 1564 flow. Second operand 11 states and 148 transitions. [2024-06-04 14:40:49,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 212 transitions, 2120 flow [2024-06-04 14:40:49,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 212 transitions, 1925 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-04 14:40:49,594 INFO L231 Difference]: Finished difference. Result has 214 places, 182 transitions, 1553 flow [2024-06-04 14:40:49,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1553, PETRI_PLACES=214, PETRI_TRANSITIONS=182} [2024-06-04 14:40:49,595 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 182 predicate places. [2024-06-04 14:40:49,595 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 182 transitions, 1553 flow [2024-06-04 14:40:49,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:49,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:49,595 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 14:40:49,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 14:40:49,595 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 14:40:49,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:49,596 INFO L85 PathProgramCache]: Analyzing trace with hash 373105174, now seen corresponding path program 4 times [2024-06-04 14:40:49,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:49,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411610540] [2024-06-04 14:40:49,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:49,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:50,514 INFO 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 14:40:50,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:50,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411610540] [2024-06-04 14:40:50,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411610540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:50,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:50,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:40:50,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942308907] [2024-06-04 14:40:50,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:50,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:40:50,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:50,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:40:50,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:40:50,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:50,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 182 transitions, 1553 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:50,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:50,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:50,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:50,917 INFO L124 PetriNetUnfolderBase]: 609/1058 cut-off events. [2024-06-04 14:40:50,917 INFO L125 PetriNetUnfolderBase]: For 86053/86053 co-relation queries the response was YES. [2024-06-04 14:40:50,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7116 conditions, 1058 events. 609/1058 cut-off events. For 86053/86053 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5079 event pairs, 81 based on Foata normal form. 3/1060 useless extension candidates. Maximal degree in co-relation 7008. Up to 572 conditions per place. [2024-06-04 14:40:50,926 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 126 selfloop transitions, 84 changer transitions 0/212 dead transitions. [2024-06-04 14:40:50,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 212 transitions, 2157 flow [2024-06-04 14:40:50,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:50,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:50,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-04 14:40:50,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-04 14:40:50,927 INFO L175 Difference]: Start difference. First operand has 214 places, 182 transitions, 1553 flow. Second operand 11 states and 146 transitions. [2024-06-04 14:40:50,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 212 transitions, 2157 flow [2024-06-04 14:40:51,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 212 transitions, 1974 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 14:40:51,166 INFO L231 Difference]: Finished difference. Result has 215 places, 185 transitions, 1606 flow [2024-06-04 14:40:51,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1370, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1606, PETRI_PLACES=215, PETRI_TRANSITIONS=185} [2024-06-04 14:40:51,166 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 183 predicate places. [2024-06-04 14:40:51,167 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 185 transitions, 1606 flow [2024-06-04 14:40:51,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:51,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:51,167 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 14:40:51,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 14:40:51,167 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 14:40:51,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:51,167 INFO L85 PathProgramCache]: Analyzing trace with hash -2134640590, now seen corresponding path program 1 times [2024-06-04 14:40:51,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:51,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050875949] [2024-06-04 14:40:51,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:51,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:52,394 INFO 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 14:40:52,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:52,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050875949] [2024-06-04 14:40:52,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050875949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:52,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:52,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:40:52,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129915762] [2024-06-04 14:40:52,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:52,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:40:52,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:52,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:40:52,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:40:52,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:52,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 185 transitions, 1606 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:52,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:52,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:52,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:52,868 INFO L124 PetriNetUnfolderBase]: 613/1066 cut-off events. [2024-06-04 14:40:52,868 INFO L125 PetriNetUnfolderBase]: For 85710/85710 co-relation queries the response was YES. [2024-06-04 14:40:52,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7245 conditions, 1066 events. 613/1066 cut-off events. For 85710/85710 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5133 event pairs, 66 based on Foata normal form. 2/1067 useless extension candidates. Maximal degree in co-relation 7136. Up to 902 conditions per place. [2024-06-04 14:40:52,877 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 163 selfloop transitions, 44 changer transitions 0/209 dead transitions. [2024-06-04 14:40:52,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 209 transitions, 2127 flow [2024-06-04 14:40:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:40:52,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:40:52,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-04 14:40:52,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-04 14:40:52,878 INFO L175 Difference]: Start difference. First operand has 215 places, 185 transitions, 1606 flow. Second operand 10 states and 125 transitions. [2024-06-04 14:40:52,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 209 transitions, 2127 flow [2024-06-04 14:40:53,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 209 transitions, 1911 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-04 14:40:53,127 INFO L231 Difference]: Finished difference. Result has 217 places, 188 transitions, 1526 flow [2024-06-04 14:40:53,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1526, PETRI_PLACES=217, PETRI_TRANSITIONS=188} [2024-06-04 14:40:53,134 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 185 predicate places. [2024-06-04 14:40:53,134 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 188 transitions, 1526 flow [2024-06-04 14:40:53,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:53,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:53,135 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 14:40:53,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 14:40:53,135 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 14:40:53,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:53,135 INFO L85 PathProgramCache]: Analyzing trace with hash -2141142964, now seen corresponding path program 5 times [2024-06-04 14:40:53,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:53,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622683536] [2024-06-04 14:40:53,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:53,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:54,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:54,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622683536] [2024-06-04 14:40:54,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622683536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:54,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:54,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:40:54,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060767143] [2024-06-04 14:40:54,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:54,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:40:54,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:54,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:40:54,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:40:54,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:54,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 188 transitions, 1526 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:54,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:54,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:54,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:54,520 INFO L124 PetriNetUnfolderBase]: 622/1081 cut-off events. [2024-06-04 14:40:54,520 INFO L125 PetriNetUnfolderBase]: For 91349/91349 co-relation queries the response was YES. [2024-06-04 14:40:54,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7282 conditions, 1081 events. 622/1081 cut-off events. For 91349/91349 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5238 event pairs, 73 based on Foata normal form. 3/1083 useless extension candidates. Maximal degree in co-relation 7171. Up to 595 conditions per place. [2024-06-04 14:40:54,530 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 136 selfloop transitions, 82 changer transitions 0/220 dead transitions. [2024-06-04 14:40:54,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 220 transitions, 2194 flow [2024-06-04 14:40:54,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:54,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:54,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-04 14:40:54,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132231404958678 [2024-06-04 14:40:54,531 INFO L175 Difference]: Start difference. First operand has 217 places, 188 transitions, 1526 flow. Second operand 11 states and 150 transitions. [2024-06-04 14:40:54,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 220 transitions, 2194 flow [2024-06-04 14:40:54,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 220 transitions, 2086 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:54,732 INFO L231 Difference]: Finished difference. Result has 221 places, 191 transitions, 1658 flow [2024-06-04 14:40:54,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1658, PETRI_PLACES=221, PETRI_TRANSITIONS=191} [2024-06-04 14:40:54,732 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 189 predicate places. [2024-06-04 14:40:54,733 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 191 transitions, 1658 flow [2024-06-04 14:40:54,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:54,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:54,733 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 14:40:54,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 14:40:54,733 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 14:40:54,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:54,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1662732650, now seen corresponding path program 6 times [2024-06-04 14:40:54,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:54,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339813227] [2024-06-04 14:40:54,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:54,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:55,627 INFO 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 14:40:55,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:55,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339813227] [2024-06-04 14:40:55,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339813227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:55,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:55,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:40:55,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70748209] [2024-06-04 14:40:55,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:55,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:40:55,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:55,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:40:55,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:40:55,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:55,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 191 transitions, 1658 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:55,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:55,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:55,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:56,089 INFO L124 PetriNetUnfolderBase]: 625/1086 cut-off events. [2024-06-04 14:40:56,089 INFO L125 PetriNetUnfolderBase]: For 88150/88150 co-relation queries the response was YES. [2024-06-04 14:40:56,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7558 conditions, 1086 events. 625/1086 cut-off events. For 88150/88150 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5330 event pairs, 67 based on Foata normal form. 1/1086 useless extension candidates. Maximal degree in co-relation 7446. Up to 888 conditions per place. [2024-06-04 14:40:56,099 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 190 selfloop transitions, 53 changer transitions 0/245 dead transitions. [2024-06-04 14:40:56,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 245 transitions, 2573 flow [2024-06-04 14:40:56,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:56,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:40:56,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-04 14:40:56,100 INFO L175 Difference]: Start difference. First operand has 221 places, 191 transitions, 1658 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:40:56,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 245 transitions, 2573 flow [2024-06-04 14:40:56,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 245 transitions, 2324 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-04 14:40:56,318 INFO L231 Difference]: Finished difference. Result has 228 places, 215 transitions, 1907 flow [2024-06-04 14:40:56,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1440, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1907, PETRI_PLACES=228, PETRI_TRANSITIONS=215} [2024-06-04 14:40:56,318 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 196 predicate places. [2024-06-04 14:40:56,319 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 215 transitions, 1907 flow [2024-06-04 14:40:56,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:56,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:56,319 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 14:40:56,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 14:40:56,319 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 14:40:56,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:56,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1662737300, now seen corresponding path program 7 times [2024-06-04 14:40:56,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:56,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246782706] [2024-06-04 14:40:56,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:56,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:57,173 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 14:40:57,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:57,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246782706] [2024-06-04 14:40:57,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246782706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:57,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:57,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:40:57,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865230483] [2024-06-04 14:40:57,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:57,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:40:57,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:57,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:40:57,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:40:57,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:57,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 215 transitions, 1907 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:57,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:57,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:57,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:57,665 INFO L124 PetriNetUnfolderBase]: 634/1101 cut-off events. [2024-06-04 14:40:57,666 INFO L125 PetriNetUnfolderBase]: For 97302/97302 co-relation queries the response was YES. [2024-06-04 14:40:57,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7783 conditions, 1101 events. 634/1101 cut-off events. For 97302/97302 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5354 event pairs, 85 based on Foata normal form. 3/1103 useless extension candidates. Maximal degree in co-relation 7665. Up to 587 conditions per place. [2024-06-04 14:40:57,675 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 132 selfloop transitions, 110 changer transitions 0/244 dead transitions. [2024-06-04 14:40:57,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 244 transitions, 2539 flow [2024-06-04 14:40:57,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:40:57,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:40:57,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-04 14:40:57,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-04 14:40:57,700 INFO L175 Difference]: Start difference. First operand has 228 places, 215 transitions, 1907 flow. Second operand 12 states and 161 transitions. [2024-06-04 14:40:57,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 244 transitions, 2539 flow [2024-06-04 14:40:57,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 244 transitions, 2348 flow, removed 79 selfloop flow, removed 7 redundant places. [2024-06-04 14:40:57,920 INFO L231 Difference]: Finished difference. Result has 233 places, 218 transitions, 2026 flow [2024-06-04 14:40:57,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1726, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2026, PETRI_PLACES=233, PETRI_TRANSITIONS=218} [2024-06-04 14:40:57,921 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 201 predicate places. [2024-06-04 14:40:57,921 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 218 transitions, 2026 flow [2024-06-04 14:40:57,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:57,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:57,921 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 14:40:57,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 14:40:57,922 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 14:40:57,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:57,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2141320718, now seen corresponding path program 4 times [2024-06-04 14:40:57,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:57,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368578954] [2024-06-04 14:40:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:57,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:40:58,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:40:58,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:40:58,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368578954] [2024-06-04 14:40:58,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368578954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:40:58,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:40:58,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:40:58,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948912608] [2024-06-04 14:40:58,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:40:58,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:40:58,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:40:58,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:40:58,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:40:58,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:40:58,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 218 transitions, 2026 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:58,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:40:58,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:40:58,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:40:59,262 INFO L124 PetriNetUnfolderBase]: 638/1109 cut-off events. [2024-06-04 14:40:59,262 INFO L125 PetriNetUnfolderBase]: For 92842/92842 co-relation queries the response was YES. [2024-06-04 14:40:59,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7484 conditions, 1109 events. 638/1109 cut-off events. For 92842/92842 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5411 event pairs, 108 based on Foata normal form. 2/1110 useless extension candidates. Maximal degree in co-relation 7368. Up to 1010 conditions per place. [2024-06-04 14:40:59,272 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 199 selfloop transitions, 36 changer transitions 0/237 dead transitions. [2024-06-04 14:40:59,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 237 transitions, 2564 flow [2024-06-04 14:40:59,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:40:59,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:40:59,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 14:40:59,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-04 14:40:59,273 INFO L175 Difference]: Start difference. First operand has 233 places, 218 transitions, 2026 flow. Second operand 11 states and 129 transitions. [2024-06-04 14:40:59,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 237 transitions, 2564 flow [2024-06-04 14:40:59,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 237 transitions, 2294 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-04 14:40:59,501 INFO L231 Difference]: Finished difference. Result has 234 places, 219 transitions, 1860 flow [2024-06-04 14:40:59,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1860, PETRI_PLACES=234, PETRI_TRANSITIONS=219} [2024-06-04 14:40:59,501 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 202 predicate places. [2024-06-04 14:40:59,501 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 219 transitions, 1860 flow [2024-06-04 14:40:59,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:40:59,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:40:59,502 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 14:40:59,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 14:40:59,502 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 14:40:59,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:40:59,502 INFO L85 PathProgramCache]: Analyzing trace with hash 891294392, now seen corresponding path program 8 times [2024-06-04 14:40:59,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:40:59,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510138505] [2024-06-04 14:40:59,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:40:59,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:40:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:00,316 INFO 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 14:41:00,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:00,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510138505] [2024-06-04 14:41:00,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510138505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:00,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:00,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:00,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814880177] [2024-06-04 14:41:00,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:00,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:00,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:00,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:00,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:00,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:00,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 219 transitions, 1860 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:00,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:00,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:00,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:00,682 INFO L124 PetriNetUnfolderBase]: 641/1114 cut-off events. [2024-06-04 14:41:00,682 INFO L125 PetriNetUnfolderBase]: For 88961/88961 co-relation queries the response was YES. [2024-06-04 14:41:00,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7240 conditions, 1114 events. 641/1114 cut-off events. For 88961/88961 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5467 event pairs, 83 based on Foata normal form. 1/1114 useless extension candidates. Maximal degree in co-relation 7123. Up to 916 conditions per place. [2024-06-04 14:41:00,692 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 194 selfloop transitions, 56 changer transitions 0/252 dead transitions. [2024-06-04 14:41:00,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 252 transitions, 2543 flow [2024-06-04 14:41:00,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:00,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 14:41:00,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-04 14:41:00,694 INFO L175 Difference]: Start difference. First operand has 234 places, 219 transitions, 1860 flow. Second operand 11 states and 133 transitions. [2024-06-04 14:41:00,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 252 transitions, 2543 flow [2024-06-04 14:41:00,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 252 transitions, 2449 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-04 14:41:00,933 INFO L231 Difference]: Finished difference. Result has 238 places, 230 transitions, 2006 flow [2024-06-04 14:41:00,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2006, PETRI_PLACES=238, PETRI_TRANSITIONS=230} [2024-06-04 14:41:00,933 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 206 predicate places. [2024-06-04 14:41:00,933 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 230 transitions, 2006 flow [2024-06-04 14:41:00,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:00,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:00,934 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 14:41:00,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 14:41:00,934 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 14:41:00,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:00,935 INFO L85 PathProgramCache]: Analyzing trace with hash 412884078, now seen corresponding path program 9 times [2024-06-04 14:41:00,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:00,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173080435] [2024-06-04 14:41:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:00,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:01,839 INFO 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 14:41:01,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:01,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173080435] [2024-06-04 14:41:01,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173080435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:01,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:01,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:01,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628804483] [2024-06-04 14:41:01,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:01,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:01,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:01,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:01,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:01,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:01,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 230 transitions, 2006 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:01,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:01,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:01,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:02,271 INFO L124 PetriNetUnfolderBase]: 650/1129 cut-off events. [2024-06-04 14:41:02,272 INFO L125 PetriNetUnfolderBase]: For 98072/98072 co-relation queries the response was YES. [2024-06-04 14:41:02,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7518 conditions, 1129 events. 650/1129 cut-off events. For 98072/98072 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5539 event pairs, 75 based on Foata normal form. 3/1131 useless extension candidates. Maximal degree in co-relation 7398. Up to 643 conditions per place. [2024-06-04 14:41:02,282 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 159 selfloop transitions, 95 changer transitions 0/256 dead transitions. [2024-06-04 14:41:02,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 256 transitions, 2661 flow [2024-06-04 14:41:02,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:02,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:02,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-04 14:41:02,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-04 14:41:02,283 INFO L175 Difference]: Start difference. First operand has 238 places, 230 transitions, 2006 flow. Second operand 11 states and 148 transitions. [2024-06-04 14:41:02,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 256 transitions, 2661 flow [2024-06-04 14:41:02,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 256 transitions, 2558 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-04 14:41:02,537 INFO L231 Difference]: Finished difference. Result has 245 places, 233 transitions, 2180 flow [2024-06-04 14:41:02,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2180, PETRI_PLACES=245, PETRI_TRANSITIONS=233} [2024-06-04 14:41:02,538 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 213 predicate places. [2024-06-04 14:41:02,538 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 233 transitions, 2180 flow [2024-06-04 14:41:02,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:02,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:02,539 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 14:41:02,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 14:41:02,539 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 14:41:02,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:02,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1127946656, now seen corresponding path program 2 times [2024-06-04 14:41:02,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:02,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891031960] [2024-06-04 14:41:02,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:02,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:03,623 INFO 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 14:41:03,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:03,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891031960] [2024-06-04 14:41:03,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891031960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:03,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:03,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:41:03,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321608682] [2024-06-04 14:41:03,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:03,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:41:03,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:03,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:41:03,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:41:03,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:03,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 233 transitions, 2180 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:03,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:03,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:03,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:03,981 INFO L124 PetriNetUnfolderBase]: 660/1147 cut-off events. [2024-06-04 14:41:03,981 INFO L125 PetriNetUnfolderBase]: For 97148/97148 co-relation queries the response was YES. [2024-06-04 14:41:03,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7757 conditions, 1147 events. 660/1147 cut-off events. For 97148/97148 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5655 event pairs, 71 based on Foata normal form. 2/1148 useless extension candidates. Maximal degree in co-relation 7636. Up to 996 conditions per place. [2024-06-04 14:41:03,991 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 212 selfloop transitions, 40 changer transitions 0/254 dead transitions. [2024-06-04 14:41:03,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 254 transitions, 2767 flow [2024-06-04 14:41:03,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:03,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:03,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 14:41:03,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-04 14:41:03,992 INFO L175 Difference]: Start difference. First operand has 245 places, 233 transitions, 2180 flow. Second operand 10 states and 122 transitions. [2024-06-04 14:41:03,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 254 transitions, 2767 flow [2024-06-04 14:41:04,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 254 transitions, 2512 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-04 14:41:04,245 INFO L231 Difference]: Finished difference. Result has 246 places, 236 transitions, 2044 flow [2024-06-04 14:41:04,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2044, PETRI_PLACES=246, PETRI_TRANSITIONS=236} [2024-06-04 14:41:04,246 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 214 predicate places. [2024-06-04 14:41:04,246 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 236 transitions, 2044 flow [2024-06-04 14:41:04,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:04,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:04,247 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 14:41:04,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 14:41:04,247 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 14:41:04,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:04,247 INFO L85 PathProgramCache]: Analyzing trace with hash 649373592, now seen corresponding path program 3 times [2024-06-04 14:41:04,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:04,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096872839] [2024-06-04 14:41:04,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:04,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:05,259 INFO 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 14:41:05,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:05,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096872839] [2024-06-04 14:41:05,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096872839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:05,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:05,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:05,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370080640] [2024-06-04 14:41:05,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:05,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:05,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:05,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:05,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:05,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:05,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 236 transitions, 2044 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:05,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:05,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:05,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:05,696 INFO L124 PetriNetUnfolderBase]: 671/1168 cut-off events. [2024-06-04 14:41:05,696 INFO L125 PetriNetUnfolderBase]: For 105909/105909 co-relation queries the response was YES. [2024-06-04 14:41:05,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7824 conditions, 1168 events. 671/1168 cut-off events. For 105909/105909 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5811 event pairs, 72 based on Foata normal form. 2/1169 useless extension candidates. Maximal degree in co-relation 7702. Up to 986 conditions per place. [2024-06-04 14:41:05,705 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 212 selfloop transitions, 43 changer transitions 0/257 dead transitions. [2024-06-04 14:41:05,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 257 transitions, 2800 flow [2024-06-04 14:41:05,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:05,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 14:41:05,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-04 14:41:05,707 INFO L175 Difference]: Start difference. First operand has 246 places, 236 transitions, 2044 flow. Second operand 10 states and 123 transitions. [2024-06-04 14:41:05,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 257 transitions, 2800 flow [2024-06-04 14:41:05,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 257 transitions, 2723 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:05,991 INFO L231 Difference]: Finished difference. Result has 250 places, 238 transitions, 2087 flow [2024-06-04 14:41:05,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1967, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2087, PETRI_PLACES=250, PETRI_TRANSITIONS=238} [2024-06-04 14:41:05,992 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 218 predicate places. [2024-06-04 14:41:05,992 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 238 transitions, 2087 flow [2024-06-04 14:41:05,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:05,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:05,993 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 14:41:05,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 14:41:05,993 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 14:41:05,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:05,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1982816404, now seen corresponding path program 4 times [2024-06-04 14:41:05,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:05,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555868959] [2024-06-04 14:41:05,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:05,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:07,135 INFO 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 14:41:07,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:07,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555868959] [2024-06-04 14:41:07,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555868959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:07,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:07,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:07,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942184014] [2024-06-04 14:41:07,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:07,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:07,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:07,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:07,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:07,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:07,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 238 transitions, 2087 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:07,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:07,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:07,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:07,626 INFO L124 PetriNetUnfolderBase]: 675/1176 cut-off events. [2024-06-04 14:41:07,626 INFO L125 PetriNetUnfolderBase]: For 108634/108634 co-relation queries the response was YES. [2024-06-04 14:41:07,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7898 conditions, 1176 events. 675/1176 cut-off events. For 108634/108634 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5870 event pairs, 73 based on Foata normal form. 2/1177 useless extension candidates. Maximal degree in co-relation 7776. Up to 1008 conditions per place. [2024-06-04 14:41:07,638 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 214 selfloop transitions, 43 changer transitions 0/259 dead transitions. [2024-06-04 14:41:07,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 259 transitions, 2681 flow [2024-06-04 14:41:07,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:07,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:07,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-04 14:41:07,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-04 14:41:07,638 INFO L175 Difference]: Start difference. First operand has 250 places, 238 transitions, 2087 flow. Second operand 10 states and 125 transitions. [2024-06-04 14:41:07,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 259 transitions, 2681 flow [2024-06-04 14:41:07,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 259 transitions, 2609 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:07,910 INFO L231 Difference]: Finished difference. Result has 255 places, 240 transitions, 2141 flow [2024-06-04 14:41:07,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2141, PETRI_PLACES=255, PETRI_TRANSITIONS=240} [2024-06-04 14:41:07,911 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 223 predicate places. [2024-06-04 14:41:07,911 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 240 transitions, 2141 flow [2024-06-04 14:41:07,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:07,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:07,911 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 14:41:07,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 14:41:07,911 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 14:41:07,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:07,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1983062668, now seen corresponding path program 10 times [2024-06-04 14:41:07,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:07,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026175921] [2024-06-04 14:41:07,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:07,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:08,812 INFO 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 14:41:08,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:08,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026175921] [2024-06-04 14:41:08,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026175921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:08,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:08,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:08,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750359740] [2024-06-04 14:41:08,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:08,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:08,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:08,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:08,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:08,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:08,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 240 transitions, 2141 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:08,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:08,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:08,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:09,355 INFO L124 PetriNetUnfolderBase]: 684/1191 cut-off events. [2024-06-04 14:41:09,355 INFO L125 PetriNetUnfolderBase]: For 115264/115264 co-relation queries the response was YES. [2024-06-04 14:41:09,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8150 conditions, 1191 events. 684/1191 cut-off events. For 115264/115264 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5965 event pairs, 82 based on Foata normal form. 3/1193 useless extension candidates. Maximal degree in co-relation 8025. Up to 697 conditions per place. [2024-06-04 14:41:09,368 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 162 selfloop transitions, 101 changer transitions 0/265 dead transitions. [2024-06-04 14:41:09,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 265 transitions, 2814 flow [2024-06-04 14:41:09,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:09,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-04 14:41:09,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-04 14:41:09,369 INFO L175 Difference]: Start difference. First operand has 255 places, 240 transitions, 2141 flow. Second operand 11 states and 144 transitions. [2024-06-04 14:41:09,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 265 transitions, 2814 flow [2024-06-04 14:41:09,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 265 transitions, 2724 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 14:41:09,685 INFO L231 Difference]: Finished difference. Result has 259 places, 243 transitions, 2344 flow [2024-06-04 14:41:09,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2344, PETRI_PLACES=259, PETRI_TRANSITIONS=243} [2024-06-04 14:41:09,686 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 227 predicate places. [2024-06-04 14:41:09,686 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 243 transitions, 2344 flow [2024-06-04 14:41:09,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:09,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:09,686 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 14:41:09,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 14:41:09,687 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 14:41:09,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:09,687 INFO L85 PathProgramCache]: Analyzing trace with hash 419386452, now seen corresponding path program 5 times [2024-06-04 14:41:09,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:09,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820020328] [2024-06-04 14:41:09,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:09,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:10,895 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 14:41:10,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:10,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820020328] [2024-06-04 14:41:10,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820020328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:10,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:10,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:10,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619041652] [2024-06-04 14:41:10,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:10,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:10,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:10,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:10,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:10,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:10,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 243 transitions, 2344 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:10,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:10,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:10,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:11,423 INFO L124 PetriNetUnfolderBase]: 681/1186 cut-off events. [2024-06-04 14:41:11,423 INFO L125 PetriNetUnfolderBase]: For 106758/106758 co-relation queries the response was YES. [2024-06-04 14:41:11,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8152 conditions, 1186 events. 681/1186 cut-off events. For 106758/106758 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5936 event pairs, 72 based on Foata normal form. 2/1187 useless extension candidates. Maximal degree in co-relation 8026. Up to 1018 conditions per place. [2024-06-04 14:41:11,434 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 218 selfloop transitions, 42 changer transitions 0/262 dead transitions. [2024-06-04 14:41:11,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 262 transitions, 2918 flow [2024-06-04 14:41:11,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:11,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:11,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-04 14:41:11,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-04 14:41:11,437 INFO L175 Difference]: Start difference. First operand has 259 places, 243 transitions, 2344 flow. Second operand 10 states and 126 transitions. [2024-06-04 14:41:11,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 262 transitions, 2918 flow [2024-06-04 14:41:11,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 262 transitions, 2645 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-04 14:41:11,741 INFO L231 Difference]: Finished difference. Result has 260 places, 243 transitions, 2159 flow [2024-06-04 14:41:11,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2071, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2159, PETRI_PLACES=260, PETRI_TRANSITIONS=243} [2024-06-04 14:41:11,742 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 228 predicate places. [2024-06-04 14:41:11,742 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 243 transitions, 2159 flow [2024-06-04 14:41:11,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:11,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:11,742 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 14:41:11,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 14:41:11,742 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 14:41:11,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:11,743 INFO L85 PathProgramCache]: Analyzing trace with hash 897723482, now seen corresponding path program 11 times [2024-06-04 14:41:11,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:11,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525207929] [2024-06-04 14:41:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:11,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:12,524 INFO 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 14:41:12,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:12,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525207929] [2024-06-04 14:41:12,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525207929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:12,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:12,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:12,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958627868] [2024-06-04 14:41:12,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:12,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:12,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:12,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:12,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:12,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:12,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 243 transitions, 2159 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:12,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:12,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:12,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:12,908 INFO L124 PetriNetUnfolderBase]: 684/1191 cut-off events. [2024-06-04 14:41:12,908 INFO L125 PetriNetUnfolderBase]: For 104725/104725 co-relation queries the response was YES. [2024-06-04 14:41:12,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7981 conditions, 1191 events. 684/1191 cut-off events. For 104725/104725 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6009 event pairs, 87 based on Foata normal form. 1/1191 useless extension candidates. Maximal degree in co-relation 7854. Up to 993 conditions per place. [2024-06-04 14:41:12,920 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 211 selfloop transitions, 58 changer transitions 0/271 dead transitions. [2024-06-04 14:41:12,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 271 transitions, 2872 flow [2024-06-04 14:41:12,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:12,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:12,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:41:12,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-04 14:41:12,921 INFO L175 Difference]: Start difference. First operand has 260 places, 243 transitions, 2159 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:41:12,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 271 transitions, 2872 flow [2024-06-04 14:41:13,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 271 transitions, 2750 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 14:41:13,235 INFO L231 Difference]: Finished difference. Result has 261 places, 249 transitions, 2246 flow [2024-06-04 14:41:13,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2246, PETRI_PLACES=261, PETRI_TRANSITIONS=249} [2024-06-04 14:41:13,236 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 229 predicate places. [2024-06-04 14:41:13,236 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 249 transitions, 2246 flow [2024-06-04 14:41:13,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:13,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:13,236 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 14:41:13,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 14:41:13,236 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 14:41:13,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:13,237 INFO L85 PathProgramCache]: Analyzing trace with hash 891289618, now seen corresponding path program 5 times [2024-06-04 14:41:13,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:13,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293417955] [2024-06-04 14:41:13,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:13,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:14,095 INFO 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 14:41:14,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:14,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293417955] [2024-06-04 14:41:14,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293417955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:14,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:14,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:14,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038799446] [2024-06-04 14:41:14,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:14,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:14,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:14,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:14,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:14,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:14,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 249 transitions, 2246 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:14,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:14,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:14,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:14,531 INFO L124 PetriNetUnfolderBase]: 688/1199 cut-off events. [2024-06-04 14:41:14,531 INFO L125 PetriNetUnfolderBase]: For 111344/111344 co-relation queries the response was YES. [2024-06-04 14:41:14,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8103 conditions, 1199 events. 688/1199 cut-off events. For 111344/111344 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6006 event pairs, 102 based on Foata normal form. 2/1200 useless extension candidates. Maximal degree in co-relation 7976. Up to 1100 conditions per place. [2024-06-04 14:41:14,541 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 228 selfloop transitions, 35 changer transitions 0/265 dead transitions. [2024-06-04 14:41:14,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 265 transitions, 2834 flow [2024-06-04 14:41:14,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:14,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:14,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:41:14,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-04 14:41:14,543 INFO L175 Difference]: Start difference. First operand has 261 places, 249 transitions, 2246 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:41:14,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 265 transitions, 2834 flow [2024-06-04 14:41:14,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 265 transitions, 2699 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:14,837 INFO L231 Difference]: Finished difference. Result has 267 places, 250 transitions, 2215 flow [2024-06-04 14:41:14,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2215, PETRI_PLACES=267, PETRI_TRANSITIONS=250} [2024-06-04 14:41:14,837 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 235 predicate places. [2024-06-04 14:41:14,838 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 250 transitions, 2215 flow [2024-06-04 14:41:14,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:14,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:14,838 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 14:41:14,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 14:41:14,838 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 14:41:14,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:14,838 INFO L85 PathProgramCache]: Analyzing trace with hash 891289742, now seen corresponding path program 12 times [2024-06-04 14:41:14,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:14,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515425354] [2024-06-04 14:41:14,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:14,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:15,686 INFO 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 14:41:15,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:15,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515425354] [2024-06-04 14:41:15,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515425354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:15,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:15,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:15,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204384166] [2024-06-04 14:41:15,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:15,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:15,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:15,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:15,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:15,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:15,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 250 transitions, 2215 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:15,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:15,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:15,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:16,253 INFO L124 PetriNetUnfolderBase]: 707/1230 cut-off events. [2024-06-04 14:41:16,254 INFO L125 PetriNetUnfolderBase]: For 126739/126739 co-relation queries the response was YES. [2024-06-04 14:41:16,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8556 conditions, 1230 events. 707/1230 cut-off events. For 126739/126739 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6192 event pairs, 79 based on Foata normal form. 3/1232 useless extension candidates. Maximal degree in co-relation 8428. Up to 694 conditions per place. [2024-06-04 14:41:16,265 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 162 selfloop transitions, 115 changer transitions 0/279 dead transitions. [2024-06-04 14:41:16,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 279 transitions, 3169 flow [2024-06-04 14:41:16,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:16,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-04 14:41:16,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-04 14:41:16,267 INFO L175 Difference]: Start difference. First operand has 267 places, 250 transitions, 2215 flow. Second operand 12 states and 160 transitions. [2024-06-04 14:41:16,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 279 transitions, 3169 flow [2024-06-04 14:41:16,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 279 transitions, 3075 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 14:41:16,615 INFO L231 Difference]: Finished difference. Result has 270 places, 255 transitions, 2519 flow [2024-06-04 14:41:16,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2121, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2519, PETRI_PLACES=270, PETRI_TRANSITIONS=255} [2024-06-04 14:41:16,616 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 238 predicate places. [2024-06-04 14:41:16,616 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 255 transitions, 2519 flow [2024-06-04 14:41:16,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:16,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:16,616 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 14:41:16,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 14:41:16,616 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 14:41:16,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:16,617 INFO L85 PathProgramCache]: Analyzing trace with hash 346470484, now seen corresponding path program 6 times [2024-06-04 14:41:16,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:16,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824267494] [2024-06-04 14:41:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:16,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:17,694 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 14:41:17,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:17,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824267494] [2024-06-04 14:41:17,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824267494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:17,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:17,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:17,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321719526] [2024-06-04 14:41:17,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:17,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:17,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:17,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:17,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:17,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:17,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 255 transitions, 2519 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:17,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:17,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:17,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:18,270 INFO L124 PetriNetUnfolderBase]: 718/1251 cut-off events. [2024-06-04 14:41:18,270 INFO L125 PetriNetUnfolderBase]: For 134125/134125 co-relation queries the response was YES. [2024-06-04 14:41:18,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9101 conditions, 1251 events. 718/1251 cut-off events. For 134125/134125 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6333 event pairs, 103 based on Foata normal form. 2/1252 useless extension candidates. Maximal degree in co-relation 8972. Up to 1183 conditions per place. [2024-06-04 14:41:18,283 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 249 selfloop transitions, 20 changer transitions 0/271 dead transitions. [2024-06-04 14:41:18,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 271 transitions, 3303 flow [2024-06-04 14:41:18,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:18,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:18,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 14:41:18,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-04 14:41:18,284 INFO L175 Difference]: Start difference. First operand has 270 places, 255 transitions, 2519 flow. Second operand 10 states and 112 transitions. [2024-06-04 14:41:18,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 271 transitions, 3303 flow [2024-06-04 14:41:18,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 271 transitions, 3092 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-04 14:41:18,657 INFO L231 Difference]: Finished difference. Result has 272 places, 257 transitions, 2386 flow [2024-06-04 14:41:18,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2308, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2386, PETRI_PLACES=272, PETRI_TRANSITIONS=257} [2024-06-04 14:41:18,658 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 240 predicate places. [2024-06-04 14:41:18,658 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 257 transitions, 2386 flow [2024-06-04 14:41:18,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:18,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:18,658 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 14:41:18,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 14:41:18,658 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 14:41:18,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:18,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1314610708, now seen corresponding path program 7 times [2024-06-04 14:41:18,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:18,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561024044] [2024-06-04 14:41:18,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:18,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:19,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:19,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561024044] [2024-06-04 14:41:19,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561024044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:19,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:19,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:19,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87792179] [2024-06-04 14:41:19,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:19,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:19,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:19,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:19,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:19,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:19,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 257 transitions, 2386 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:19,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:19,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:19,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:20,190 INFO L124 PetriNetUnfolderBase]: 728/1269 cut-off events. [2024-06-04 14:41:20,191 INFO L125 PetriNetUnfolderBase]: For 136035/136035 co-relation queries the response was YES. [2024-06-04 14:41:20,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9075 conditions, 1269 events. 728/1269 cut-off events. For 136035/136035 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6486 event pairs, 99 based on Foata normal form. 2/1270 useless extension candidates. Maximal degree in co-relation 8944. Up to 1185 conditions per place. [2024-06-04 14:41:20,203 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 250 selfloop transitions, 26 changer transitions 0/278 dead transitions. [2024-06-04 14:41:20,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 278 transitions, 3038 flow [2024-06-04 14:41:20,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:20,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:20,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:41:20,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-04 14:41:20,204 INFO L175 Difference]: Start difference. First operand has 272 places, 257 transitions, 2386 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:41:20,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 278 transitions, 3038 flow [2024-06-04 14:41:20,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 278 transitions, 2995 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:20,571 INFO L231 Difference]: Finished difference. Result has 277 places, 263 transitions, 2467 flow [2024-06-04 14:41:20,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2343, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2467, PETRI_PLACES=277, PETRI_TRANSITIONS=263} [2024-06-04 14:41:20,572 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 245 predicate places. [2024-06-04 14:41:20,572 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 263 transitions, 2467 flow [2024-06-04 14:41:20,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:20,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:20,572 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 14:41:20,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 14:41:20,572 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 14:41:20,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:20,576 INFO L85 PathProgramCache]: Analyzing trace with hash 2083136414, now seen corresponding path program 8 times [2024-06-04 14:41:20,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:20,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121995341] [2024-06-04 14:41:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:20,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:21,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:21,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121995341] [2024-06-04 14:41:21,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121995341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:21,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:21,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 14:41:21,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707939715] [2024-06-04 14:41:21,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:21,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 14:41:21,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:21,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 14:41:21,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 14:41:21,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:21,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 263 transitions, 2467 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:21,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:21,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:21,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:22,117 INFO L124 PetriNetUnfolderBase]: 738/1287 cut-off events. [2024-06-04 14:41:22,117 INFO L125 PetriNetUnfolderBase]: For 138958/138958 co-relation queries the response was YES. [2024-06-04 14:41:22,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9269 conditions, 1287 events. 738/1287 cut-off events. For 138958/138958 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6593 event pairs, 105 based on Foata normal form. 2/1288 useless extension candidates. Maximal degree in co-relation 9135. Up to 1240 conditions per place. [2024-06-04 14:41:22,131 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 261 selfloop transitions, 18 changer transitions 0/281 dead transitions. [2024-06-04 14:41:22,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 281 transitions, 3117 flow [2024-06-04 14:41:22,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:22,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:41:22,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-04 14:41:22,132 INFO L175 Difference]: Start difference. First operand has 277 places, 263 transitions, 2467 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:41:22,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 281 transitions, 3117 flow [2024-06-04 14:41:22,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 281 transitions, 3062 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:22,571 INFO L231 Difference]: Finished difference. Result has 283 places, 268 transitions, 2520 flow [2024-06-04 14:41:22,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2520, PETRI_PLACES=283, PETRI_TRANSITIONS=268} [2024-06-04 14:41:22,571 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 251 predicate places. [2024-06-04 14:41:22,572 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 268 transitions, 2520 flow [2024-06-04 14:41:22,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:22,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:22,572 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 14:41:22,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 14:41:22,572 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 14:41:22,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:22,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2065143912, now seen corresponding path program 9 times [2024-06-04 14:41:22,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:22,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231994942] [2024-06-04 14:41:22,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:22,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:23,736 INFO 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 14:41:23,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:23,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231994942] [2024-06-04 14:41:23,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231994942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:23,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:23,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:23,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197549726] [2024-06-04 14:41:23,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:23,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:23,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:23,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:23,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:23,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:23,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 268 transitions, 2520 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:23,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:23,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:23,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:24,278 INFO L124 PetriNetUnfolderBase]: 749/1308 cut-off events. [2024-06-04 14:41:24,279 INFO L125 PetriNetUnfolderBase]: For 151005/151005 co-relation queries the response was YES. [2024-06-04 14:41:24,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9619 conditions, 1308 events. 749/1308 cut-off events. For 151005/151005 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6756 event pairs, 104 based on Foata normal form. 2/1309 useless extension candidates. Maximal degree in co-relation 9483. Up to 1195 conditions per place. [2024-06-04 14:41:24,292 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 252 selfloop transitions, 31 changer transitions 0/285 dead transitions. [2024-06-04 14:41:24,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 285 transitions, 3354 flow [2024-06-04 14:41:24,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:24,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 14:41:24,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-04 14:41:24,293 INFO L175 Difference]: Start difference. First operand has 283 places, 268 transitions, 2520 flow. Second operand 10 states and 117 transitions. [2024-06-04 14:41:24,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 285 transitions, 3354 flow [2024-06-04 14:41:24,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 285 transitions, 3313 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-04 14:41:24,813 INFO L231 Difference]: Finished difference. Result has 288 places, 270 transitions, 2591 flow [2024-06-04 14:41:24,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2479, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2591, PETRI_PLACES=288, PETRI_TRANSITIONS=270} [2024-06-04 14:41:24,813 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 256 predicate places. [2024-06-04 14:41:24,814 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 270 transitions, 2591 flow [2024-06-04 14:41:24,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:24,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:24,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:24,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 14:41:24,814 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 14:41:24,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:24,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1322942578, now seen corresponding path program 10 times [2024-06-04 14:41:24,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:24,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038524401] [2024-06-04 14:41:24,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:24,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:26,048 INFO 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 14:41:26,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:26,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038524401] [2024-06-04 14:41:26,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038524401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:26,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:26,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:26,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281563668] [2024-06-04 14:41:26,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:26,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:26,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:26,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:26,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:26,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:26,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 270 transitions, 2591 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:26,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:26,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:26,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:26,587 INFO L124 PetriNetUnfolderBase]: 753/1316 cut-off events. [2024-06-04 14:41:26,588 INFO L125 PetriNetUnfolderBase]: For 154497/154497 co-relation queries the response was YES. [2024-06-04 14:41:26,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9736 conditions, 1316 events. 753/1316 cut-off events. For 154497/154497 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6825 event pairs, 104 based on Foata normal form. 2/1317 useless extension candidates. Maximal degree in co-relation 9599. Up to 1211 conditions per place. [2024-06-04 14:41:26,600 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 252 selfloop transitions, 33 changer transitions 0/287 dead transitions. [2024-06-04 14:41:26,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 287 transitions, 3236 flow [2024-06-04 14:41:26,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:26,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:26,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 14:41:26,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-04 14:41:26,601 INFO L175 Difference]: Start difference. First operand has 288 places, 270 transitions, 2591 flow. Second operand 10 states and 119 transitions. [2024-06-04 14:41:26,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 287 transitions, 3236 flow [2024-06-04 14:41:27,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 287 transitions, 3163 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-04 14:41:27,180 INFO L231 Difference]: Finished difference. Result has 293 places, 272 transitions, 2633 flow [2024-06-04 14:41:27,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2633, PETRI_PLACES=293, PETRI_TRANSITIONS=272} [2024-06-04 14:41:27,180 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 261 predicate places. [2024-06-04 14:41:27,180 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 272 transitions, 2633 flow [2024-06-04 14:41:27,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:27,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:27,181 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 14:41:27,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 14:41:27,181 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 14:41:27,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:27,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1544833882, now seen corresponding path program 13 times [2024-06-04 14:41:27,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:27,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780185922] [2024-06-04 14:41:27,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:27,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:28,023 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 14:41:28,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:28,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780185922] [2024-06-04 14:41:28,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780185922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:28,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:28,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:28,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101979471] [2024-06-04 14:41:28,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:28,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:28,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:28,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:28,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:28,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:28,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 272 transitions, 2633 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:28,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:28,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:28,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:28,518 INFO L124 PetriNetUnfolderBase]: 762/1331 cut-off events. [2024-06-04 14:41:28,518 INFO L125 PetriNetUnfolderBase]: For 162661/162661 co-relation queries the response was YES. [2024-06-04 14:41:28,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9962 conditions, 1331 events. 762/1331 cut-off events. For 162661/162661 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6916 event pairs, 96 based on Foata normal form. 3/1333 useless extension candidates. Maximal degree in co-relation 9822. Up to 1115 conditions per place. [2024-06-04 14:41:28,533 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 245 selfloop transitions, 48 changer transitions 0/295 dead transitions. [2024-06-04 14:41:28,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 295 transitions, 3391 flow [2024-06-04 14:41:28,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:28,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 14:41:28,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-04 14:41:28,544 INFO L175 Difference]: Start difference. First operand has 293 places, 272 transitions, 2633 flow. Second operand 11 states and 135 transitions. [2024-06-04 14:41:28,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 295 transitions, 3391 flow [2024-06-04 14:41:29,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 295 transitions, 3317 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 14:41:29,123 INFO L231 Difference]: Finished difference. Result has 297 places, 275 transitions, 2762 flow [2024-06-04 14:41:29,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2559, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2762, PETRI_PLACES=297, PETRI_TRANSITIONS=275} [2024-06-04 14:41:29,136 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 265 predicate places. [2024-06-04 14:41:29,137 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 275 transitions, 2762 flow [2024-06-04 14:41:29,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:29,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:29,137 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 14:41:29,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 14:41:29,137 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 14:41:29,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:29,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1544587618, now seen corresponding path program 11 times [2024-06-04 14:41:29,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:29,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157656682] [2024-06-04 14:41:29,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:29,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:30,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:30,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:30,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157656682] [2024-06-04 14:41:30,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157656682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:30,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:30,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:30,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706169110] [2024-06-04 14:41:30,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:30,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:30,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:30,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:30,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:30,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:30,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 275 transitions, 2762 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:30,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:30,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:30,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:30,828 INFO L124 PetriNetUnfolderBase]: 759/1326 cut-off events. [2024-06-04 14:41:30,829 INFO L125 PetriNetUnfolderBase]: For 151884/151884 co-relation queries the response was YES. [2024-06-04 14:41:30,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9842 conditions, 1326 events. 759/1326 cut-off events. For 151884/151884 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6884 event pairs, 101 based on Foata normal form. 2/1327 useless extension candidates. Maximal degree in co-relation 9701. Up to 1221 conditions per place. [2024-06-04 14:41:30,843 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 251 selfloop transitions, 36 changer transitions 0/289 dead transitions. [2024-06-04 14:41:30,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 289 transitions, 3372 flow [2024-06-04 14:41:30,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 14:41:30,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-04 14:41:30,844 INFO L175 Difference]: Start difference. First operand has 297 places, 275 transitions, 2762 flow. Second operand 10 states and 116 transitions. [2024-06-04 14:41:30,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 289 transitions, 3372 flow [2024-06-04 14:41:31,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 289 transitions, 3183 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-04 14:41:31,395 INFO L231 Difference]: Finished difference. Result has 298 places, 275 transitions, 2649 flow [2024-06-04 14:41:31,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2573, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2649, PETRI_PLACES=298, PETRI_TRANSITIONS=275} [2024-06-04 14:41:31,395 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 266 predicate places. [2024-06-04 14:41:31,395 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 275 transitions, 2649 flow [2024-06-04 14:41:31,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:31,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:31,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:31,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 14:41:31,396 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 14:41:31,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:31,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1323188842, now seen corresponding path program 14 times [2024-06-04 14:41:31,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:31,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74543974] [2024-06-04 14:41:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:31,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:32,256 INFO 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 14:41:32,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:32,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74543974] [2024-06-04 14:41:32,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74543974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:32,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:32,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:32,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796482042] [2024-06-04 14:41:32,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:32,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:32,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:32,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:32,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:32,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:32,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 275 transitions, 2649 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:32,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:32,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:32,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:32,767 INFO L124 PetriNetUnfolderBase]: 768/1341 cut-off events. [2024-06-04 14:41:32,768 INFO L125 PetriNetUnfolderBase]: For 159605/159605 co-relation queries the response was YES. [2024-06-04 14:41:32,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9877 conditions, 1341 events. 768/1341 cut-off events. For 159605/159605 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6976 event pairs, 105 based on Foata normal form. 3/1343 useless extension candidates. Maximal degree in co-relation 9735. Up to 1125 conditions per place. [2024-06-04 14:41:32,782 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 249 selfloop transitions, 47 changer transitions 0/298 dead transitions. [2024-06-04 14:41:32,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 298 transitions, 3419 flow [2024-06-04 14:41:32,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:32,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:32,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 14:41:32,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-04 14:41:32,783 INFO L175 Difference]: Start difference. First operand has 298 places, 275 transitions, 2649 flow. Second operand 11 states and 136 transitions. [2024-06-04 14:41:32,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 298 transitions, 3419 flow [2024-06-04 14:41:33,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 298 transitions, 3322 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 14:41:33,243 INFO L231 Difference]: Finished difference. Result has 299 places, 278 transitions, 2759 flow [2024-06-04 14:41:33,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2552, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2759, PETRI_PLACES=299, PETRI_TRANSITIONS=278} [2024-06-04 14:41:33,244 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 267 predicate places. [2024-06-04 14:41:33,244 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 278 transitions, 2759 flow [2024-06-04 14:41:33,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:33,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:33,244 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 14:41:33,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 14:41:33,245 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 14:41:33,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:33,245 INFO L85 PathProgramCache]: Analyzing trace with hash -468042048, now seen corresponding path program 15 times [2024-06-04 14:41:33,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:33,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767849422] [2024-06-04 14:41:33,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:33,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:34,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:34,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767849422] [2024-06-04 14:41:34,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767849422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:34,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:34,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:34,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983203664] [2024-06-04 14:41:34,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:34,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:34,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:34,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:34,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:34,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:34,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 278 transitions, 2759 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:34,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:34,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:34,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:34,689 INFO L124 PetriNetUnfolderBase]: 777/1356 cut-off events. [2024-06-04 14:41:34,690 INFO L125 PetriNetUnfolderBase]: For 164027/164027 co-relation queries the response was YES. [2024-06-04 14:41:34,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10156 conditions, 1356 events. 777/1356 cut-off events. For 164027/164027 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7063 event pairs, 91 based on Foata normal form. 3/1358 useless extension candidates. Maximal degree in co-relation 10014. Up to 1140 conditions per place. [2024-06-04 14:41:34,705 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 244 selfloop transitions, 54 changer transitions 0/300 dead transitions. [2024-06-04 14:41:34,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 300 transitions, 3529 flow [2024-06-04 14:41:34,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:34,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:34,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 14:41:34,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3691460055096419 [2024-06-04 14:41:34,706 INFO L175 Difference]: Start difference. First operand has 299 places, 278 transitions, 2759 flow. Second operand 11 states and 134 transitions. [2024-06-04 14:41:34,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 300 transitions, 3529 flow [2024-06-04 14:41:35,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 300 transitions, 3346 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-04 14:41:35,316 INFO L231 Difference]: Finished difference. Result has 301 places, 281 transitions, 2803 flow [2024-06-04 14:41:35,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2576, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2803, PETRI_PLACES=301, PETRI_TRANSITIONS=281} [2024-06-04 14:41:35,316 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 269 predicate places. [2024-06-04 14:41:35,317 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 281 transitions, 2803 flow [2024-06-04 14:41:35,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:35,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:35,317 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 14:41:35,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 14:41:35,317 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 14:41:35,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:35,317 INFO L85 PathProgramCache]: Analyzing trace with hash -814570286, now seen corresponding path program 12 times [2024-06-04 14:41:35,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:35,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857236122] [2024-06-04 14:41:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:35,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:36,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:36,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:36,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857236122] [2024-06-04 14:41:36,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857236122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:36,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:36,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:36,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906702940] [2024-06-04 14:41:36,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:36,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:36,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:36,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:36,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:36,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:36,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 281 transitions, 2803 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:36,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:36,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:36,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:36,871 INFO L124 PetriNetUnfolderBase]: 781/1364 cut-off events. [2024-06-04 14:41:36,872 INFO L125 PetriNetUnfolderBase]: For 161233/161233 co-relation queries the response was YES. [2024-06-04 14:41:36,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10138 conditions, 1364 events. 781/1364 cut-off events. For 161233/161233 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7118 event pairs, 113 based on Foata normal form. 2/1365 useless extension candidates. Maximal degree in co-relation 9995. Up to 1326 conditions per place. [2024-06-04 14:41:36,887 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 278 selfloop transitions, 15 changer transitions 0/295 dead transitions. [2024-06-04 14:41:36,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 295 transitions, 3433 flow [2024-06-04 14:41:36,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:36,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:36,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 14:41:36,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-06-04 14:41:36,888 INFO L175 Difference]: Start difference. First operand has 301 places, 281 transitions, 2803 flow. Second operand 10 states and 109 transitions. [2024-06-04 14:41:36,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 295 transitions, 3433 flow [2024-06-04 14:41:37,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 295 transitions, 3230 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-06-04 14:41:37,416 INFO L231 Difference]: Finished difference. Result has 302 places, 282 transitions, 2648 flow [2024-06-04 14:41:37,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2648, PETRI_PLACES=302, PETRI_TRANSITIONS=282} [2024-06-04 14:41:37,416 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 270 predicate places. [2024-06-04 14:41:37,416 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 282 transitions, 2648 flow [2024-06-04 14:41:37,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:37,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:37,417 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 14:41:37,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 14:41:37,417 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 14:41:37,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:37,417 INFO L85 PathProgramCache]: Analyzing trace with hash -814867514, now seen corresponding path program 1 times [2024-06-04 14:41:37,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:37,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682715757] [2024-06-04 14:41:37,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:37,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:38,388 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 14:41:38,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:38,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682715757] [2024-06-04 14:41:38,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682715757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:38,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:38,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:38,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944717096] [2024-06-04 14:41:38,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:38,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:38,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:38,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:38,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:38,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:38,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 282 transitions, 2648 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:38,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:38,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:38,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:38,943 INFO L124 PetriNetUnfolderBase]: 778/1360 cut-off events. [2024-06-04 14:41:38,943 INFO L125 PetriNetUnfolderBase]: For 153351/153351 co-relation queries the response was YES. [2024-06-04 14:41:38,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9693 conditions, 1360 events. 778/1360 cut-off events. For 153351/153351 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7096 event pairs, 110 based on Foata normal form. 2/1361 useless extension candidates. Maximal degree in co-relation 9549. Up to 1296 conditions per place. [2024-06-04 14:41:38,956 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 275 selfloop transitions, 25 changer transitions 0/302 dead transitions. [2024-06-04 14:41:38,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 302 transitions, 3592 flow [2024-06-04 14:41:38,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-04 14:41:38,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-04 14:41:38,957 INFO L175 Difference]: Start difference. First operand has 302 places, 282 transitions, 2648 flow. Second operand 11 states and 122 transitions. [2024-06-04 14:41:38,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 302 transitions, 3592 flow [2024-06-04 14:41:39,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 302 transitions, 3556 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 14:41:39,511 INFO L231 Difference]: Finished difference. Result has 306 places, 286 transitions, 2780 flow [2024-06-04 14:41:39,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2612, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2780, PETRI_PLACES=306, PETRI_TRANSITIONS=286} [2024-06-04 14:41:39,511 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 274 predicate places. [2024-06-04 14:41:39,511 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 286 transitions, 2780 flow [2024-06-04 14:41:39,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:39,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:39,512 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 14:41:39,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 14:41:39,512 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 14:41:39,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:39,512 INFO L85 PathProgramCache]: Analyzing trace with hash -468219678, now seen corresponding path program 16 times [2024-06-04 14:41:39,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:39,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375250096] [2024-06-04 14:41:39,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:39,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:40,540 INFO 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 14:41:40,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:40,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375250096] [2024-06-04 14:41:40,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375250096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:40,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:40,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:40,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527602366] [2024-06-04 14:41:40,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:40,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:40,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:40,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:40,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:40,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:40,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 286 transitions, 2780 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:40,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:40,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:40,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:41,226 INFO L124 PetriNetUnfolderBase]: 797/1391 cut-off events. [2024-06-04 14:41:41,227 INFO L125 PetriNetUnfolderBase]: For 174114/174114 co-relation queries the response was YES. [2024-06-04 14:41:41,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10405 conditions, 1391 events. 797/1391 cut-off events. For 174114/174114 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7287 event pairs, 88 based on Foata normal form. 3/1393 useless extension candidates. Maximal degree in co-relation 10259. Up to 1122 conditions per place. [2024-06-04 14:41:41,242 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 241 selfloop transitions, 71 changer transitions 0/314 dead transitions. [2024-06-04 14:41:41,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 314 transitions, 3912 flow [2024-06-04 14:41:41,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:41:41,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:41:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 14:41:41,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-06-04 14:41:41,243 INFO L175 Difference]: Start difference. First operand has 306 places, 286 transitions, 2780 flow. Second operand 12 states and 146 transitions. [2024-06-04 14:41:41,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 314 transitions, 3912 flow [2024-06-04 14:41:41,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 314 transitions, 3823 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-04 14:41:41,782 INFO L231 Difference]: Finished difference. Result has 311 places, 292 transitions, 3075 flow [2024-06-04 14:41:41,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2691, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3075, PETRI_PLACES=311, PETRI_TRANSITIONS=292} [2024-06-04 14:41:41,783 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 279 predicate places. [2024-06-04 14:41:41,783 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 292 transitions, 3075 flow [2024-06-04 14:41:41,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:41,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:41,783 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 14:41:41,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 14:41:41,783 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 14:41:41,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:41,784 INFO L85 PathProgramCache]: Analyzing trace with hash -274404816, now seen corresponding path program 13 times [2024-06-04 14:41:41,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:41,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676421100] [2024-06-04 14:41:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:41,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:43,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:41:43,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:43,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676421100] [2024-06-04 14:41:43,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676421100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:43,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:43,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:43,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788291240] [2024-06-04 14:41:43,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:43,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:43,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:43,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:43,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:43,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 292 transitions, 3075 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:43,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:43,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:43,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:43,536 INFO L124 PetriNetUnfolderBase]: 801/1399 cut-off events. [2024-06-04 14:41:43,537 INFO L125 PetriNetUnfolderBase]: For 172217/172217 co-relation queries the response was YES. [2024-06-04 14:41:43,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10621 conditions, 1399 events. 801/1399 cut-off events. For 172217/172217 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7325 event pairs, 115 based on Foata normal form. 2/1400 useless extension candidates. Maximal degree in co-relation 10473. Up to 1356 conditions per place. [2024-06-04 14:41:43,553 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 289 selfloop transitions, 16 changer transitions 0/307 dead transitions. [2024-06-04 14:41:43,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 307 transitions, 3748 flow [2024-06-04 14:41:43,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:43,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:43,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-04 14:41:43,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3140495867768595 [2024-06-04 14:41:43,554 INFO L175 Difference]: Start difference. First operand has 311 places, 292 transitions, 3075 flow. Second operand 11 states and 114 transitions. [2024-06-04 14:41:43,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 307 transitions, 3748 flow [2024-06-04 14:41:44,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 307 transitions, 3541 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-04 14:41:44,064 INFO L231 Difference]: Finished difference. Result has 315 places, 295 transitions, 2948 flow [2024-06-04 14:41:44,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2869, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2948, PETRI_PLACES=315, PETRI_TRANSITIONS=295} [2024-06-04 14:41:44,064 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2024-06-04 14:41:44,064 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 295 transitions, 2948 flow [2024-06-04 14:41:44,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:44,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:44,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:44,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 14:41:44,065 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 14:41:44,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:44,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1551267746, now seen corresponding path program 6 times [2024-06-04 14:41:44,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:44,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264967709] [2024-06-04 14:41:44,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:44,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:44,971 INFO 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 14:41:44,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:44,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264967709] [2024-06-04 14:41:44,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264967709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:44,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:44,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:44,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929233555] [2024-06-04 14:41:44,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:44,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:44,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:44,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:44,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:45,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:45,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 295 transitions, 2948 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:45,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:45,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:45,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:45,410 INFO L124 PetriNetUnfolderBase]: 798/1394 cut-off events. [2024-06-04 14:41:45,411 INFO L125 PetriNetUnfolderBase]: For 163055/163055 co-relation queries the response was YES. [2024-06-04 14:41:45,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10160 conditions, 1394 events. 798/1394 cut-off events. For 163055/163055 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7302 event pairs, 120 based on Foata normal form. 2/1395 useless extension candidates. Maximal degree in co-relation 10009. Up to 1361 conditions per place. [2024-06-04 14:41:45,426 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 286 selfloop transitions, 18 changer transitions 0/306 dead transitions. [2024-06-04 14:41:45,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 306 transitions, 3580 flow [2024-06-04 14:41:45,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:45,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 14:41:45,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-04 14:41:45,428 INFO L175 Difference]: Start difference. First operand has 315 places, 295 transitions, 2948 flow. Second operand 11 states and 116 transitions. [2024-06-04 14:41:45,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 306 transitions, 3580 flow [2024-06-04 14:41:45,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 306 transitions, 3530 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-04 14:41:45,945 INFO L231 Difference]: Finished difference. Result has 318 places, 295 transitions, 2938 flow [2024-06-04 14:41:45,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2898, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2938, PETRI_PLACES=318, PETRI_TRANSITIONS=295} [2024-06-04 14:41:45,946 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 286 predicate places. [2024-06-04 14:41:45,946 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 295 transitions, 2938 flow [2024-06-04 14:41:45,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:45,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:45,946 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 14:41:45,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 14:41:45,947 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 14:41:45,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:45,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2083434944, now seen corresponding path program 14 times [2024-06-04 14:41:45,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:45,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107536129] [2024-06-04 14:41:45,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:45,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:47,070 INFO 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 14:41:47,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:47,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107536129] [2024-06-04 14:41:47,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107536129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:47,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:47,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:47,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837061546] [2024-06-04 14:41:47,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:47,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:47,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:47,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:47,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:47,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:47,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 295 transitions, 2938 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:47,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:47,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:47,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:47,561 INFO L124 PetriNetUnfolderBase]: 802/1402 cut-off events. [2024-06-04 14:41:47,561 INFO L125 PetriNetUnfolderBase]: For 166170/166170 co-relation queries the response was YES. [2024-06-04 14:41:47,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10219 conditions, 1402 events. 802/1402 cut-off events. For 166170/166170 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7390 event pairs, 116 based on Foata normal form. 2/1403 useless extension candidates. Maximal degree in co-relation 10067. Up to 1332 conditions per place. [2024-06-04 14:41:47,577 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 286 selfloop transitions, 21 changer transitions 0/309 dead transitions. [2024-06-04 14:41:47,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 309 transitions, 3818 flow [2024-06-04 14:41:47,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:47,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 14:41:47,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-04 14:41:47,578 INFO L175 Difference]: Start difference. First operand has 318 places, 295 transitions, 2938 flow. Second operand 10 states and 112 transitions. [2024-06-04 14:41:47,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 309 transitions, 3818 flow [2024-06-04 14:41:48,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 309 transitions, 3714 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-04 14:41:48,111 INFO L231 Difference]: Finished difference. Result has 317 places, 296 transitions, 2906 flow [2024-06-04 14:41:48,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2834, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2906, PETRI_PLACES=317, PETRI_TRANSITIONS=296} [2024-06-04 14:41:48,111 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 285 predicate places. [2024-06-04 14:41:48,111 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 296 transitions, 2906 flow [2024-06-04 14:41:48,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:48,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:48,112 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 14:41:48,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 14:41:48,112 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 14:41:48,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:48,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1324549410, now seen corresponding path program 15 times [2024-06-04 14:41:48,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:48,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37723407] [2024-06-04 14:41:48,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:48,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:49,334 INFO 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 14:41:49,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:49,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37723407] [2024-06-04 14:41:49,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37723407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:49,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:49,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:49,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458030247] [2024-06-04 14:41:49,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:49,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:49,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:49,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:49,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:49,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:49,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 296 transitions, 2906 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:49,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:49,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:49,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:49,921 INFO L124 PetriNetUnfolderBase]: 799/1397 cut-off events. [2024-06-04 14:41:49,921 INFO L125 PetriNetUnfolderBase]: For 157725/157725 co-relation queries the response was YES. [2024-06-04 14:41:49,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9931 conditions, 1397 events. 799/1397 cut-off events. For 157725/157725 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7358 event pairs, 111 based on Foata normal form. 2/1398 useless extension candidates. Maximal degree in co-relation 9779. Up to 1333 conditions per place. [2024-06-04 14:41:49,936 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 283 selfloop transitions, 24 changer transitions 0/309 dead transitions. [2024-06-04 14:41:49,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 309 transitions, 3554 flow [2024-06-04 14:41:49,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:49,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:49,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-04 14:41:49,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-04 14:41:49,939 INFO L175 Difference]: Start difference. First operand has 317 places, 296 transitions, 2906 flow. Second operand 10 states and 113 transitions. [2024-06-04 14:41:49,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 309 transitions, 3554 flow [2024-06-04 14:41:50,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 309 transitions, 3357 flow, removed 25 selfloop flow, removed 13 redundant places. [2024-06-04 14:41:50,433 INFO L231 Difference]: Finished difference. Result has 314 places, 296 transitions, 2761 flow [2024-06-04 14:41:50,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2761, PETRI_PLACES=314, PETRI_TRANSITIONS=296} [2024-06-04 14:41:50,433 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 282 predicate places. [2024-06-04 14:41:50,433 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 296 transitions, 2761 flow [2024-06-04 14:41:50,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:50,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:50,434 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 14:41:50,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 14:41:50,434 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 14:41:50,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:50,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1324303146, now seen corresponding path program 17 times [2024-06-04 14:41:50,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:50,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443537219] [2024-06-04 14:41:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:50,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:51,231 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 14:41:51,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:51,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443537219] [2024-06-04 14:41:51,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443537219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:51,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:51,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:51,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598079029] [2024-06-04 14:41:51,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:51,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:51,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:51,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:51,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:51,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:51,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 296 transitions, 2761 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:51,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:51,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:51,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:51,711 INFO L124 PetriNetUnfolderBase]: 793/1388 cut-off events. [2024-06-04 14:41:51,711 INFO L125 PetriNetUnfolderBase]: For 148615/148615 co-relation queries the response was YES. [2024-06-04 14:41:51,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9161 conditions, 1388 events. 793/1388 cut-off events. For 148615/148615 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7312 event pairs, 112 based on Foata normal form. 3/1390 useless extension candidates. Maximal degree in co-relation 9014. Up to 1306 conditions per place. [2024-06-04 14:41:51,726 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 286 selfloop transitions, 25 changer transitions 0/313 dead transitions. [2024-06-04 14:41:51,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 313 transitions, 3445 flow [2024-06-04 14:41:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:41:51,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:41:51,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 14:41:51,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-04 14:41:51,728 INFO L175 Difference]: Start difference. First operand has 314 places, 296 transitions, 2761 flow. Second operand 11 states and 126 transitions. [2024-06-04 14:41:51,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 313 transitions, 3445 flow [2024-06-04 14:41:52,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 313 transitions, 3294 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-04 14:41:52,213 INFO L231 Difference]: Finished difference. Result has 316 places, 296 transitions, 2667 flow [2024-06-04 14:41:52,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2610, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2667, PETRI_PLACES=316, PETRI_TRANSITIONS=296} [2024-06-04 14:41:52,213 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 284 predicate places. [2024-06-04 14:41:52,213 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 296 transitions, 2667 flow [2024-06-04 14:41:52,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:52,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:52,214 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 14:41:52,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 14:41:52,214 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 14:41:52,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:52,214 INFO L85 PathProgramCache]: Analyzing trace with hash -734502764, now seen corresponding path program 1 times [2024-06-04 14:41:52,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:52,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191042855] [2024-06-04 14:41:52,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:52,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:53,142 INFO 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 14:41:53,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:53,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191042855] [2024-06-04 14:41:53,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191042855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:53,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:53,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:53,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895985413] [2024-06-04 14:41:53,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:53,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:53,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:53,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:53,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:53,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:53,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 296 transitions, 2667 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:53,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:53,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:53,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:53,686 INFO L124 PetriNetUnfolderBase]: 790/1383 cut-off events. [2024-06-04 14:41:53,686 INFO L125 PetriNetUnfolderBase]: For 132704/132704 co-relation queries the response was YES. [2024-06-04 14:41:53,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8845 conditions, 1383 events. 790/1383 cut-off events. For 132704/132704 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7298 event pairs, 114 based on Foata normal form. 1/1383 useless extension candidates. Maximal degree in co-relation 8698. Up to 1331 conditions per place. [2024-06-04 14:41:53,702 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 282 selfloop transitions, 24 changer transitions 0/308 dead transitions. [2024-06-04 14:41:53,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 308 transitions, 3311 flow [2024-06-04 14:41:53,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:53,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:53,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 14:41:53,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-04 14:41:53,703 INFO L175 Difference]: Start difference. First operand has 316 places, 296 transitions, 2667 flow. Second operand 10 states and 111 transitions. [2024-06-04 14:41:53,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 308 transitions, 3311 flow [2024-06-04 14:41:54,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 308 transitions, 3197 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-04 14:41:54,252 INFO L231 Difference]: Finished difference. Result has 316 places, 296 transitions, 2609 flow [2024-06-04 14:41:54,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2553, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2609, PETRI_PLACES=316, PETRI_TRANSITIONS=296} [2024-06-04 14:41:54,253 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 284 predicate places. [2024-06-04 14:41:54,253 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 296 transitions, 2609 flow [2024-06-04 14:41:54,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:54,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:54,253 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 14:41:54,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 14:41:54,254 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 14:41:54,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:54,254 INFO L85 PathProgramCache]: Analyzing trace with hash -734502454, now seen corresponding path program 16 times [2024-06-04 14:41:54,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:54,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336725581] [2024-06-04 14:41:54,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:54,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:55,273 INFO 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 14:41:55,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:55,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336725581] [2024-06-04 14:41:55,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336725581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:55,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:55,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:41:55,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606975999] [2024-06-04 14:41:55,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:55,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:41:55,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:55,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:41:55,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:41:55,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:55,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 296 transitions, 2609 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:55,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:55,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:55,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:55,916 INFO L124 PetriNetUnfolderBase]: 787/1378 cut-off events. [2024-06-04 14:41:55,916 INFO L125 PetriNetUnfolderBase]: For 129014/129014 co-relation queries the response was YES. [2024-06-04 14:41:55,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8546 conditions, 1378 events. 787/1378 cut-off events. For 129014/129014 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7280 event pairs, 113 based on Foata normal form. 2/1379 useless extension candidates. Maximal degree in co-relation 8398. Up to 1325 conditions per place. [2024-06-04 14:41:55,929 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 284 selfloop transitions, 22 changer transitions 0/308 dead transitions. [2024-06-04 14:41:55,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 308 transitions, 3251 flow [2024-06-04 14:41:55,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:41:55,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:41:55,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 14:41:55,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:41:55,930 INFO L175 Difference]: Start difference. First operand has 316 places, 296 transitions, 2609 flow. Second operand 10 states and 110 transitions. [2024-06-04 14:41:55,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 308 transitions, 3251 flow [2024-06-04 14:41:56,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 308 transitions, 3195 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 14:41:56,359 INFO L231 Difference]: Finished difference. Result has 317 places, 296 transitions, 2603 flow [2024-06-04 14:41:56,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2553, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2603, PETRI_PLACES=317, PETRI_TRANSITIONS=296} [2024-06-04 14:41:56,360 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 285 predicate places. [2024-06-04 14:41:56,360 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 296 transitions, 2603 flow [2024-06-04 14:41:56,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:56,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:56,360 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 14:41:56,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 14:41:56,361 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 14:41:56,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:56,361 INFO L85 PathProgramCache]: Analyzing trace with hash -212722008, now seen corresponding path program 1 times [2024-06-04 14:41:56,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:56,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751945346] [2024-06-04 14:41:56,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:56,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:57,397 INFO 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 14:41:57,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:57,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751945346] [2024-06-04 14:41:57,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751945346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:57,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:57,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:41:57,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921827409] [2024-06-04 14:41:57,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:57,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:41:57,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:41:57,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:41:57,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:57,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 296 transitions, 2603 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:57,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:57,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:57,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:41:58,021 INFO L124 PetriNetUnfolderBase]: 834/1471 cut-off events. [2024-06-04 14:41:58,022 INFO L125 PetriNetUnfolderBase]: For 216144/216144 co-relation queries the response was YES. [2024-06-04 14:41:58,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10719 conditions, 1471 events. 834/1471 cut-off events. For 216144/216144 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7834 event pairs, 116 based on Foata normal form. 2/1472 useless extension candidates. Maximal degree in co-relation 10570. Up to 1254 conditions per place. [2024-06-04 14:41:58,038 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 309 selfloop transitions, 26 changer transitions 0/337 dead transitions. [2024-06-04 14:41:58,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 337 transitions, 3762 flow [2024-06-04 14:41:58,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:41:58,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:41:58,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-04 14:41:58,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37995337995337997 [2024-06-04 14:41:58,039 INFO L175 Difference]: Start difference. First operand has 317 places, 296 transitions, 2603 flow. Second operand 13 states and 163 transitions. [2024-06-04 14:41:58,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 337 transitions, 3762 flow [2024-06-04 14:41:58,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 337 transitions, 3658 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 14:41:58,790 INFO L231 Difference]: Finished difference. Result has 320 places, 298 transitions, 2627 flow [2024-06-04 14:41:58,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2627, PETRI_PLACES=320, PETRI_TRANSITIONS=298} [2024-06-04 14:41:58,791 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 288 predicate places. [2024-06-04 14:41:58,791 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 298 transitions, 2627 flow [2024-06-04 14:41:58,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:58,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:41:58,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:41:58,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 14:41:58,791 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 14:41:58,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:41:58,792 INFO L85 PathProgramCache]: Analyzing trace with hash -210848058, now seen corresponding path program 2 times [2024-06-04 14:41:58,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:41:58,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490795848] [2024-06-04 14:41:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:41:58,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:41:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:41:59,667 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 14:41:59,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:41:59,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490795848] [2024-06-04 14:41:59,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490795848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:41:59,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:41:59,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:41:59,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878601437] [2024-06-04 14:41:59,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:41:59,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:41:59,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:41:59,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:41:59,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:41:59,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:41:59,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 298 transitions, 2627 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:41:59,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:41:59,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:41:59,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:00,360 INFO L124 PetriNetUnfolderBase]: 838/1479 cut-off events. [2024-06-04 14:42:00,361 INFO L125 PetriNetUnfolderBase]: For 216546/216546 co-relation queries the response was YES. [2024-06-04 14:42:00,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10788 conditions, 1479 events. 838/1479 cut-off events. For 216546/216546 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7899 event pairs, 124 based on Foata normal form. 2/1480 useless extension candidates. Maximal degree in co-relation 10638. Up to 1292 conditions per place. [2024-06-04 14:42:00,376 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 309 selfloop transitions, 26 changer transitions 0/337 dead transitions. [2024-06-04 14:42:00,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 337 transitions, 3752 flow [2024-06-04 14:42:00,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:42:00,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:42:00,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-04 14:42:00,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776223776223776 [2024-06-04 14:42:00,377 INFO L175 Difference]: Start difference. First operand has 320 places, 298 transitions, 2627 flow. Second operand 13 states and 162 transitions. [2024-06-04 14:42:00,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 337 transitions, 3752 flow [2024-06-04 14:42:01,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 337 transitions, 3677 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 14:42:01,099 INFO L231 Difference]: Finished difference. Result has 324 places, 299 transitions, 2644 flow [2024-06-04 14:42:01,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2644, PETRI_PLACES=324, PETRI_TRANSITIONS=299} [2024-06-04 14:42:01,100 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-04 14:42:01,100 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 299 transitions, 2644 flow [2024-06-04 14:42:01,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:01,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:01,100 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 14:42:01,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 14:42:01,101 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 14:42:01,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:01,101 INFO L85 PathProgramCache]: Analyzing trace with hash -210844338, now seen corresponding path program 3 times [2024-06-04 14:42:01,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:01,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952203432] [2024-06-04 14:42:01,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:01,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:02,153 INFO 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 14:42:02,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:02,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952203432] [2024-06-04 14:42:02,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952203432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:02,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:02,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:02,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632292242] [2024-06-04 14:42:02,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:02,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:02,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:02,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:02,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:02,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:02,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 299 transitions, 2644 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:02,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:02,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:02,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:02,945 INFO L124 PetriNetUnfolderBase]: 819/1446 cut-off events. [2024-06-04 14:42:02,945 INFO L125 PetriNetUnfolderBase]: For 209934/209934 co-relation queries the response was YES. [2024-06-04 14:42:02,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9039 conditions, 1446 events. 819/1446 cut-off events. For 209934/209934 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7733 event pairs, 115 based on Foata normal form. 14/1459 useless extension candidates. Maximal degree in co-relation 8887. Up to 1304 conditions per place. [2024-06-04 14:42:02,961 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 300 selfloop transitions, 23 changer transitions 11/336 dead transitions. [2024-06-04 14:42:02,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 336 transitions, 3509 flow [2024-06-04 14:42:02,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:42:02,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:42:02,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 167 transitions. [2024-06-04 14:42:02,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36147186147186144 [2024-06-04 14:42:02,963 INFO L175 Difference]: Start difference. First operand has 324 places, 299 transitions, 2644 flow. Second operand 14 states and 167 transitions. [2024-06-04 14:42:02,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 336 transitions, 3509 flow [2024-06-04 14:42:03,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 336 transitions, 3425 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-04 14:42:03,459 INFO L231 Difference]: Finished difference. Result has 327 places, 296 transitions, 2586 flow [2024-06-04 14:42:03,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2586, PETRI_PLACES=327, PETRI_TRANSITIONS=296} [2024-06-04 14:42:03,459 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 295 predicate places. [2024-06-04 14:42:03,459 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 296 transitions, 2586 flow [2024-06-04 14:42:03,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:03,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:03,460 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 14:42:03,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 14:42:03,460 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 14:42:03,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:03,460 INFO L85 PathProgramCache]: Analyzing trace with hash -210844183, now seen corresponding path program 1 times [2024-06-04 14:42:03,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:03,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106197762] [2024-06-04 14:42:03,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:03,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:04,486 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 14:42:04,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:04,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106197762] [2024-06-04 14:42:04,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106197762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:04,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:04,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:04,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558990419] [2024-06-04 14:42:04,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:04,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:04,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:04,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:04,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:04,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:04,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 296 transitions, 2586 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:04,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:04,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:04,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:05,128 INFO L124 PetriNetUnfolderBase]: 809/1422 cut-off events. [2024-06-04 14:42:05,128 INFO L125 PetriNetUnfolderBase]: For 153604/153604 co-relation queries the response was YES. [2024-06-04 14:42:05,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9258 conditions, 1422 events. 809/1422 cut-off events. For 153604/153604 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7581 event pairs, 111 based on Foata normal form. 2/1423 useless extension candidates. Maximal degree in co-relation 9105. Up to 1327 conditions per place. [2024-06-04 14:42:05,142 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 305 selfloop transitions, 27 changer transitions 2/336 dead transitions. [2024-06-04 14:42:05,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 336 transitions, 3774 flow [2024-06-04 14:42:05,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:42:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:42:05,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-04 14:42:05,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36596736596736595 [2024-06-04 14:42:05,143 INFO L175 Difference]: Start difference. First operand has 327 places, 296 transitions, 2586 flow. Second operand 13 states and 157 transitions. [2024-06-04 14:42:05,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 336 transitions, 3774 flow [2024-06-04 14:42:05,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 336 transitions, 3693 flow, removed 12 selfloop flow, removed 13 redundant places. [2024-06-04 14:42:05,694 INFO L231 Difference]: Finished difference. Result has 329 places, 304 transitions, 2777 flow [2024-06-04 14:42:05,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2777, PETRI_PLACES=329, PETRI_TRANSITIONS=304} [2024-06-04 14:42:05,695 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 297 predicate places. [2024-06-04 14:42:05,695 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 304 transitions, 2777 flow [2024-06-04 14:42:05,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:05,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:05,695 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 14:42:05,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 14:42:05,695 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 14:42:05,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:05,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1341731495, now seen corresponding path program 2 times [2024-06-04 14:42:05,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:05,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772654470] [2024-06-04 14:42:05,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:05,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:06,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:06,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:06,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772654470] [2024-06-04 14:42:06,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772654470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:06,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:06,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:06,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026735976] [2024-06-04 14:42:06,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:06,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:06,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:06,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:06,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:06,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:06,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 304 transitions, 2777 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:06,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:06,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:06,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:07,340 INFO L124 PetriNetUnfolderBase]: 856/1508 cut-off events. [2024-06-04 14:42:07,341 INFO L125 PetriNetUnfolderBase]: For 171971/171971 co-relation queries the response was YES. [2024-06-04 14:42:07,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10163 conditions, 1508 events. 856/1508 cut-off events. For 171971/171971 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8132 event pairs, 129 based on Foata normal form. 2/1509 useless extension candidates. Maximal degree in co-relation 10007. Up to 1440 conditions per place. [2024-06-04 14:42:07,358 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 316 selfloop transitions, 25 changer transitions 2/345 dead transitions. [2024-06-04 14:42:07,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 345 transitions, 4088 flow [2024-06-04 14:42:07,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:42:07,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:42:07,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-04 14:42:07,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:42:07,359 INFO L175 Difference]: Start difference. First operand has 329 places, 304 transitions, 2777 flow. Second operand 13 states and 143 transitions. [2024-06-04 14:42:07,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 345 transitions, 4088 flow [2024-06-04 14:42:07,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 345 transitions, 3918 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-06-04 14:42:07,885 INFO L231 Difference]: Finished difference. Result has 342 places, 323 transitions, 3045 flow [2024-06-04 14:42:07,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2657, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3045, PETRI_PLACES=342, PETRI_TRANSITIONS=323} [2024-06-04 14:42:07,885 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 310 predicate places. [2024-06-04 14:42:07,886 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 323 transitions, 3045 flow [2024-06-04 14:42:07,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:07,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:07,886 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 14:42:07,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 14:42:07,886 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 14:42:07,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:07,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2075188449, now seen corresponding path program 3 times [2024-06-04 14:42:07,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:07,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133066447] [2024-06-04 14:42:07,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:07,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:08,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:08,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133066447] [2024-06-04 14:42:08,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133066447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:08,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:08,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:08,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320946574] [2024-06-04 14:42:08,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:08,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:08,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:08,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:08,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:09,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:09,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 323 transitions, 3045 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:09,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:09,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:09,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:09,617 INFO L124 PetriNetUnfolderBase]: 861/1515 cut-off events. [2024-06-04 14:42:09,618 INFO L125 PetriNetUnfolderBase]: For 175333/175336 co-relation queries the response was YES. [2024-06-04 14:42:09,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9960 conditions, 1515 events. 861/1515 cut-off events. For 175333/175336 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8211 event pairs, 111 based on Foata normal form. 6/1520 useless extension candidates. Maximal degree in co-relation 9795. Up to 1410 conditions per place. [2024-06-04 14:42:09,632 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 316 selfloop transitions, 33 changer transitions 2/353 dead transitions. [2024-06-04 14:42:09,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 353 transitions, 3919 flow [2024-06-04 14:42:09,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:09,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:09,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-04 14:42:09,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351010101010101 [2024-06-04 14:42:09,634 INFO L175 Difference]: Start difference. First operand has 342 places, 323 transitions, 3045 flow. Second operand 12 states and 139 transitions. [2024-06-04 14:42:09,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 353 transitions, 3919 flow [2024-06-04 14:42:10,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 353 transitions, 3789 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-06-04 14:42:10,273 INFO L231 Difference]: Finished difference. Result has 352 places, 327 transitions, 3094 flow [2024-06-04 14:42:10,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2915, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3094, PETRI_PLACES=352, PETRI_TRANSITIONS=327} [2024-06-04 14:42:10,274 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 320 predicate places. [2024-06-04 14:42:10,274 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 327 transitions, 3094 flow [2024-06-04 14:42:10,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:10,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:10,274 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 14:42:10,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 14:42:10,275 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 14:42:10,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:10,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1498689796, now seen corresponding path program 4 times [2024-06-04 14:42:10,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:10,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715101043] [2024-06-04 14:42:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:10,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:11,370 INFO 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 14:42:11,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:11,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715101043] [2024-06-04 14:42:11,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715101043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:11,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:11,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:11,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141355288] [2024-06-04 14:42:11,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:11,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:11,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:11,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:11,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:11,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:11,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 327 transitions, 3094 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:11,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:11,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:11,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:12,025 INFO L124 PetriNetUnfolderBase]: 908/1608 cut-off events. [2024-06-04 14:42:12,026 INFO L125 PetriNetUnfolderBase]: For 256647/256650 co-relation queries the response was YES. [2024-06-04 14:42:12,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12172 conditions, 1608 events. 908/1608 cut-off events. For 256647/256650 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8834 event pairs, 76 based on Foata normal form. 4/1611 useless extension candidates. Maximal degree in co-relation 12004. Up to 933 conditions per place. [2024-06-04 14:42:12,047 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 235 selfloop transitions, 127 changer transitions 0/364 dead transitions. [2024-06-04 14:42:12,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 364 transitions, 4317 flow [2024-06-04 14:42:12,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:12,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:12,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 166 transitions. [2024-06-04 14:42:12,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-04 14:42:12,048 INFO L175 Difference]: Start difference. First operand has 352 places, 327 transitions, 3094 flow. Second operand 12 states and 166 transitions. [2024-06-04 14:42:12,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 364 transitions, 4317 flow [2024-06-04 14:42:12,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 364 transitions, 4189 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-04 14:42:12,932 INFO L231 Difference]: Finished difference. Result has 355 places, 329 transitions, 3298 flow [2024-06-04 14:42:12,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2966, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3298, PETRI_PLACES=355, PETRI_TRANSITIONS=329} [2024-06-04 14:42:12,933 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 323 predicate places. [2024-06-04 14:42:12,933 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 329 transitions, 3298 flow [2024-06-04 14:42:12,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:12,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:12,933 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 14:42:12,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 14:42:12,934 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 14:42:12,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:12,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1498693671, now seen corresponding path program 4 times [2024-06-04 14:42:12,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:12,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190078753] [2024-06-04 14:42:12,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:12,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:14,069 INFO 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 14:42:14,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:14,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190078753] [2024-06-04 14:42:14,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190078753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:14,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:14,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:14,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013252635] [2024-06-04 14:42:14,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:14,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:14,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:14,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:14,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:14,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:14,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 329 transitions, 3298 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:14,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:14,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:14,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:14,788 INFO L124 PetriNetUnfolderBase]: 927/1639 cut-off events. [2024-06-04 14:42:14,788 INFO L125 PetriNetUnfolderBase]: For 276255/276258 co-relation queries the response was YES. [2024-06-04 14:42:14,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12987 conditions, 1639 events. 927/1639 cut-off events. For 276255/276258 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9015 event pairs, 78 based on Foata normal form. 4/1642 useless extension candidates. Maximal degree in co-relation 12818. Up to 1012 conditions per place. [2024-06-04 14:42:14,807 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 219 selfloop transitions, 143 changer transitions 0/364 dead transitions. [2024-06-04 14:42:14,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 364 transitions, 4535 flow [2024-06-04 14:42:14,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:14,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:14,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-04 14:42:14,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-04 14:42:14,808 INFO L175 Difference]: Start difference. First operand has 355 places, 329 transitions, 3298 flow. Second operand 12 states and 163 transitions. [2024-06-04 14:42:14,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 364 transitions, 4535 flow [2024-06-04 14:42:15,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 364 transitions, 4313 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-04 14:42:15,775 INFO L231 Difference]: Finished difference. Result has 359 places, 335 transitions, 3566 flow [2024-06-04 14:42:15,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3078, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3566, PETRI_PLACES=359, PETRI_TRANSITIONS=335} [2024-06-04 14:42:15,776 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 327 predicate places. [2024-06-04 14:42:15,776 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 335 transitions, 3566 flow [2024-06-04 14:42:15,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:15,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:15,776 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 14:42:15,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 14:42:15,777 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 14:42:15,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:15,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1498693516, now seen corresponding path program 5 times [2024-06-04 14:42:15,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:15,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637309222] [2024-06-04 14:42:15,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:15,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:16,895 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 14:42:16,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:16,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637309222] [2024-06-04 14:42:16,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637309222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:16,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:16,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:16,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820564430] [2024-06-04 14:42:16,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:16,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:16,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:16,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:16,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:17,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:17,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 335 transitions, 3566 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:17,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:17,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:17,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:17,698 INFO L124 PetriNetUnfolderBase]: 951/1691 cut-off events. [2024-06-04 14:42:17,698 INFO L125 PetriNetUnfolderBase]: For 362759/362762 co-relation queries the response was YES. [2024-06-04 14:42:17,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13571 conditions, 1691 events. 951/1691 cut-off events. For 362759/362762 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9415 event pairs, 91 based on Foata normal form. 16/1706 useless extension candidates. Maximal degree in co-relation 13400. Up to 1068 conditions per place. [2024-06-04 14:42:17,719 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 234 selfloop transitions, 126 changer transitions 11/373 dead transitions. [2024-06-04 14:42:17,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 373 transitions, 4554 flow [2024-06-04 14:42:17,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:42:17,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:42:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 177 transitions. [2024-06-04 14:42:17,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125874125874126 [2024-06-04 14:42:17,720 INFO L175 Difference]: Start difference. First operand has 359 places, 335 transitions, 3566 flow. Second operand 13 states and 177 transitions. [2024-06-04 14:42:17,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 373 transitions, 4554 flow [2024-06-04 14:42:18,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 373 transitions, 4248 flow, removed 57 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:18,788 INFO L231 Difference]: Finished difference. Result has 364 places, 333 transitions, 3529 flow [2024-06-04 14:42:18,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3266, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3529, PETRI_PLACES=364, PETRI_TRANSITIONS=333} [2024-06-04 14:42:18,788 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 332 predicate places. [2024-06-04 14:42:18,789 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 333 transitions, 3529 flow [2024-06-04 14:42:18,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:18,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:18,794 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 14:42:18,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 14:42:18,794 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 14:42:18,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:18,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1498837821, now seen corresponding path program 5 times [2024-06-04 14:42:18,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:18,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397265732] [2024-06-04 14:42:18,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:18,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:20,088 INFO 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 14:42:20,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:20,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397265732] [2024-06-04 14:42:20,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397265732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:20,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:20,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:20,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126895287] [2024-06-04 14:42:20,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:20,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:20,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:20,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:20,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:20,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:20,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 333 transitions, 3529 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:20,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:20,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:20,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:20,830 INFO L124 PetriNetUnfolderBase]: 925/1641 cut-off events. [2024-06-04 14:42:20,830 INFO L125 PetriNetUnfolderBase]: For 284435/284438 co-relation queries the response was YES. [2024-06-04 14:42:20,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13317 conditions, 1641 events. 925/1641 cut-off events. For 284435/284438 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9113 event pairs, 87 based on Foata normal form. 4/1644 useless extension candidates. Maximal degree in co-relation 13145. Up to 1097 conditions per place. [2024-06-04 14:42:20,854 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 240 selfloop transitions, 120 changer transitions 3/365 dead transitions. [2024-06-04 14:42:20,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 365 transitions, 4427 flow [2024-06-04 14:42:20,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:42:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:42:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-04 14:42:20,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-04 14:42:20,855 INFO L175 Difference]: Start difference. First operand has 364 places, 333 transitions, 3529 flow. Second operand 13 states and 165 transitions. [2024-06-04 14:42:20,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 365 transitions, 4427 flow [2024-06-04 14:42:22,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 365 transitions, 4150 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-04 14:42:22,354 INFO L231 Difference]: Finished difference. Result has 367 places, 335 transitions, 3579 flow [2024-06-04 14:42:22,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3252, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3579, PETRI_PLACES=367, PETRI_TRANSITIONS=335} [2024-06-04 14:42:22,355 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 335 predicate places. [2024-06-04 14:42:22,355 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 335 transitions, 3579 flow [2024-06-04 14:42:22,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:22,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:22,355 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 14:42:22,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 14:42:22,355 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 14:42:22,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:22,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1504415527, now seen corresponding path program 1 times [2024-06-04 14:42:22,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:22,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681892371] [2024-06-04 14:42:22,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:22,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:23,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:23,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681892371] [2024-06-04 14:42:23,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681892371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:23,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:23,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:23,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470789396] [2024-06-04 14:42:23,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:23,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:23,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:23,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:23,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:23,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:23,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 335 transitions, 3579 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:23,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:23,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:23,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:23,992 INFO L124 PetriNetUnfolderBase]: 927/1643 cut-off events. [2024-06-04 14:42:23,993 INFO L125 PetriNetUnfolderBase]: For 288900/288903 co-relation queries the response was YES. [2024-06-04 14:42:24,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13322 conditions, 1643 events. 927/1643 cut-off events. For 288900/288903 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9089 event pairs, 95 based on Foata normal form. 4/1646 useless extension candidates. Maximal degree in co-relation 13148. Up to 1318 conditions per place. [2024-06-04 14:42:24,014 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 275 selfloop transitions, 86 changer transitions 0/363 dead transitions. [2024-06-04 14:42:24,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 363 transitions, 4407 flow [2024-06-04 14:42:24,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:42:24,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:42:24,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 14:42:24,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-04 14:42:24,015 INFO L175 Difference]: Start difference. First operand has 367 places, 335 transitions, 3579 flow. Second operand 11 states and 140 transitions. [2024-06-04 14:42:24,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 363 transitions, 4407 flow [2024-06-04 14:42:25,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 363 transitions, 4094 flow, removed 34 selfloop flow, removed 11 redundant places. [2024-06-04 14:42:25,004 INFO L231 Difference]: Finished difference. Result has 367 places, 338 transitions, 3475 flow [2024-06-04 14:42:25,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3268, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3475, PETRI_PLACES=367, PETRI_TRANSITIONS=338} [2024-06-04 14:42:25,005 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 335 predicate places. [2024-06-04 14:42:25,005 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 338 transitions, 3475 flow [2024-06-04 14:42:25,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:25,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:25,005 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 14:42:25,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 14:42:25,006 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 14:42:25,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:25,006 INFO L85 PathProgramCache]: Analyzing trace with hash -839586869, now seen corresponding path program 6 times [2024-06-04 14:42:25,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:25,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246820575] [2024-06-04 14:42:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:25,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:26,376 INFO 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 14:42:26,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:26,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246820575] [2024-06-04 14:42:26,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246820575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:26,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:26,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:26,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916906551] [2024-06-04 14:42:26,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:26,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:26,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:26,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:26,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:26,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:26,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 338 transitions, 3475 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:26,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:26,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:26,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:27,025 INFO L124 PetriNetUnfolderBase]: 926/1642 cut-off events. [2024-06-04 14:42:27,026 INFO L125 PetriNetUnfolderBase]: For 277504/277507 co-relation queries the response was YES. [2024-06-04 14:42:27,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12911 conditions, 1642 events. 926/1642 cut-off events. For 277504/277507 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9062 event pairs, 70 based on Foata normal form. 4/1645 useless extension candidates. Maximal degree in co-relation 12736. Up to 1063 conditions per place. [2024-06-04 14:42:27,047 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 234 selfloop transitions, 131 changer transitions 1/368 dead transitions. [2024-06-04 14:42:27,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 368 transitions, 4310 flow [2024-06-04 14:42:27,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:27,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:27,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-04 14:42:27,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-04 14:42:27,048 INFO L175 Difference]: Start difference. First operand has 367 places, 338 transitions, 3475 flow. Second operand 12 states and 159 transitions. [2024-06-04 14:42:27,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 368 transitions, 4310 flow [2024-06-04 14:42:28,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 368 transitions, 4072 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-04 14:42:28,003 INFO L231 Difference]: Finished difference. Result has 372 places, 340 transitions, 3596 flow [2024-06-04 14:42:28,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3237, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3596, PETRI_PLACES=372, PETRI_TRANSITIONS=340} [2024-06-04 14:42:28,004 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 340 predicate places. [2024-06-04 14:42:28,004 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 340 transitions, 3596 flow [2024-06-04 14:42:28,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:28,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:28,004 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 14:42:28,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 14:42:28,005 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 14:42:28,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:28,005 INFO L85 PathProgramCache]: Analyzing trace with hash -839587024, now seen corresponding path program 6 times [2024-06-04 14:42:28,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:28,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510955402] [2024-06-04 14:42:28,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:28,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:28,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:28,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:28,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510955402] [2024-06-04 14:42:28,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510955402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:28,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:28,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:28,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581584559] [2024-06-04 14:42:28,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:28,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:28,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:28,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:28,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:29,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:29,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 340 transitions, 3596 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:29,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:29,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:29,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:29,523 INFO L124 PetriNetUnfolderBase]: 923/1637 cut-off events. [2024-06-04 14:42:29,523 INFO L125 PetriNetUnfolderBase]: For 267063/267066 co-relation queries the response was YES. [2024-06-04 14:42:29,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12817 conditions, 1637 events. 923/1637 cut-off events. For 267063/267066 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9064 event pairs, 125 based on Foata normal form. 4/1640 useless extension candidates. Maximal degree in co-relation 12640. Up to 1403 conditions per place. [2024-06-04 14:42:29,545 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 282 selfloop transitions, 82 changer transitions 1/367 dead transitions. [2024-06-04 14:42:29,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 367 transitions, 4431 flow [2024-06-04 14:42:29,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:29,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 14:42:29,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-04 14:42:29,546 INFO L175 Difference]: Start difference. First operand has 372 places, 340 transitions, 3596 flow. Second operand 12 states and 145 transitions. [2024-06-04 14:42:29,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 367 transitions, 4431 flow [2024-06-04 14:42:30,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 367 transitions, 4145 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 14:42:30,565 INFO L231 Difference]: Finished difference. Result has 374 places, 341 transitions, 3493 flow [2024-06-04 14:42:30,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3314, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3493, PETRI_PLACES=374, PETRI_TRANSITIONS=341} [2024-06-04 14:42:30,566 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 342 predicate places. [2024-06-04 14:42:30,566 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 341 transitions, 3493 flow [2024-06-04 14:42:30,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:30,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:30,566 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 14:42:30,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 14:42:30,567 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 14:42:30,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:30,567 INFO L85 PathProgramCache]: Analyzing trace with hash 375070727, now seen corresponding path program 2 times [2024-06-04 14:42:30,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:30,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7148962] [2024-06-04 14:42:30,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:30,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:31,836 INFO 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 14:42:31,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:31,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7148962] [2024-06-04 14:42:31,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7148962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:31,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:31,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:31,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573684370] [2024-06-04 14:42:31,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:31,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:31,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:31,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:31,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:31,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:31,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 341 transitions, 3493 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:31,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:31,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:31,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:32,537 INFO L124 PetriNetUnfolderBase]: 929/1643 cut-off events. [2024-06-04 14:42:32,538 INFO L125 PetriNetUnfolderBase]: For 271416/271419 co-relation queries the response was YES. [2024-06-04 14:42:32,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12616 conditions, 1643 events. 929/1643 cut-off events. For 271416/271419 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9025 event pairs, 77 based on Foata normal form. 4/1646 useless extension candidates. Maximal degree in co-relation 12438. Up to 1289 conditions per place. [2024-06-04 14:42:32,559 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 283 selfloop transitions, 81 changer transitions 0/366 dead transitions. [2024-06-04 14:42:32,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 366 transitions, 4323 flow [2024-06-04 14:42:32,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:42:32,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:42:32,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 14:42:32,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-04 14:42:32,560 INFO L175 Difference]: Start difference. First operand has 374 places, 341 transitions, 3493 flow. Second operand 11 states and 139 transitions. [2024-06-04 14:42:32,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 366 transitions, 4323 flow [2024-06-04 14:42:33,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 366 transitions, 4142 flow, removed 22 selfloop flow, removed 13 redundant places. [2024-06-04 14:42:33,619 INFO L231 Difference]: Finished difference. Result has 372 places, 344 transitions, 3515 flow [2024-06-04 14:42:33,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3317, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3515, PETRI_PLACES=372, PETRI_TRANSITIONS=344} [2024-06-04 14:42:33,619 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 340 predicate places. [2024-06-04 14:42:33,620 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 344 transitions, 3515 flow [2024-06-04 14:42:33,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:33,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:33,620 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 14:42:33,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 14:42:33,620 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 14:42:33,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:33,620 INFO L85 PathProgramCache]: Analyzing trace with hash 194198244, now seen corresponding path program 7 times [2024-06-04 14:42:33,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:33,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954176825] [2024-06-04 14:42:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:33,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:34,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:34,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954176825] [2024-06-04 14:42:34,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954176825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:34,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:34,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:34,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263880575] [2024-06-04 14:42:34,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:34,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:34,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:34,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:34,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:34,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:34,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 344 transitions, 3515 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:34,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:34,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:34,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:35,124 INFO L124 PetriNetUnfolderBase]: 933/1651 cut-off events. [2024-06-04 14:42:35,125 INFO L125 PetriNetUnfolderBase]: For 275887/275890 co-relation queries the response was YES. [2024-06-04 14:42:35,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12650 conditions, 1651 events. 933/1651 cut-off events. For 275887/275890 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9101 event pairs, 137 based on Foata normal form. 4/1654 useless extension candidates. Maximal degree in co-relation 12476. Up to 1417 conditions per place. [2024-06-04 14:42:35,146 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 289 selfloop transitions, 79 changer transitions 0/370 dead transitions. [2024-06-04 14:42:35,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 370 transitions, 4387 flow [2024-06-04 14:42:35,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:35,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:35,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-04 14:42:35,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-04 14:42:35,148 INFO L175 Difference]: Start difference. First operand has 372 places, 344 transitions, 3515 flow. Second operand 12 states and 143 transitions. [2024-06-04 14:42:35,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 370 transitions, 4387 flow [2024-06-04 14:42:36,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 370 transitions, 4221 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 14:42:36,223 INFO L231 Difference]: Finished difference. Result has 378 places, 348 transitions, 3580 flow [2024-06-04 14:42:36,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3358, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3580, PETRI_PLACES=378, PETRI_TRANSITIONS=348} [2024-06-04 14:42:36,224 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 346 predicate places. [2024-06-04 14:42:36,224 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 348 transitions, 3580 flow [2024-06-04 14:42:36,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:36,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:36,224 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 14:42:36,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 14:42:36,224 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 14:42:36,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:36,225 INFO L85 PathProgramCache]: Analyzing trace with hash 173722007, now seen corresponding path program 3 times [2024-06-04 14:42:36,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:36,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436421107] [2024-06-04 14:42:36,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:36,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:37,217 INFO 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 14:42:37,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:37,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436421107] [2024-06-04 14:42:37,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436421107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:37,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:37,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:42:37,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255714870] [2024-06-04 14:42:37,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:37,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:42:37,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:37,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:42:37,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:42:37,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:37,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 348 transitions, 3580 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:37,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:37,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:37,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:37,733 INFO L124 PetriNetUnfolderBase]: 937/1659 cut-off events. [2024-06-04 14:42:37,733 INFO L125 PetriNetUnfolderBase]: For 280350/280353 co-relation queries the response was YES. [2024-06-04 14:42:37,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12691 conditions, 1659 events. 937/1659 cut-off events. For 280350/280353 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9185 event pairs, 103 based on Foata normal form. 4/1662 useless extension candidates. Maximal degree in co-relation 12516. Up to 1330 conditions per place. [2024-06-04 14:42:37,756 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 297 selfloop transitions, 73 changer transitions 0/372 dead transitions. [2024-06-04 14:42:37,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 372 transitions, 4405 flow [2024-06-04 14:42:37,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:42:37,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:42:37,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 14:42:37,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-04 14:42:37,757 INFO L175 Difference]: Start difference. First operand has 378 places, 348 transitions, 3580 flow. Second operand 11 states and 141 transitions. [2024-06-04 14:42:37,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 372 transitions, 4405 flow [2024-06-04 14:42:38,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 372 transitions, 4241 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-04 14:42:38,822 INFO L231 Difference]: Finished difference. Result has 383 places, 349 transitions, 3582 flow [2024-06-04 14:42:38,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3418, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3582, PETRI_PLACES=383, PETRI_TRANSITIONS=349} [2024-06-04 14:42:38,823 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 351 predicate places. [2024-06-04 14:42:38,823 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 349 transitions, 3582 flow [2024-06-04 14:42:38,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:38,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:38,823 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 14:42:38,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 14:42:38,824 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 14:42:38,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:38,824 INFO L85 PathProgramCache]: Analyzing trace with hash 201832335, now seen corresponding path program 4 times [2024-06-04 14:42:38,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:38,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380808587] [2024-06-04 14:42:38,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:38,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:39,900 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 14:42:39,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:39,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380808587] [2024-06-04 14:42:39,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380808587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:39,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:39,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:39,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774614423] [2024-06-04 14:42:39,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:39,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:39,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:39,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:39,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:39,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:39,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 349 transitions, 3582 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:39,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:39,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:39,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:40,494 INFO L124 PetriNetUnfolderBase]: 948/1680 cut-off events. [2024-06-04 14:42:40,494 INFO L125 PetriNetUnfolderBase]: For 300015/300018 co-relation queries the response was YES. [2024-06-04 14:42:40,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13050 conditions, 1680 events. 948/1680 cut-off events. For 300015/300018 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9335 event pairs, 104 based on Foata normal form. 4/1683 useless extension candidates. Maximal degree in co-relation 12874. Up to 1316 conditions per place. [2024-06-04 14:42:40,516 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 292 selfloop transitions, 80 changer transitions 0/374 dead transitions. [2024-06-04 14:42:40,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 374 transitions, 4671 flow [2024-06-04 14:42:40,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:42:40,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:42:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 14:42:40,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-04 14:42:40,520 INFO L175 Difference]: Start difference. First operand has 383 places, 349 transitions, 3582 flow. Second operand 11 states and 139 transitions. [2024-06-04 14:42:40,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 374 transitions, 4671 flow [2024-06-04 14:42:41,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 374 transitions, 4502 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 14:42:41,529 INFO L231 Difference]: Finished difference. Result has 384 places, 351 transitions, 3607 flow [2024-06-04 14:42:41,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3413, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3607, PETRI_PLACES=384, PETRI_TRANSITIONS=351} [2024-06-04 14:42:41,547 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 352 predicate places. [2024-06-04 14:42:41,547 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 351 transitions, 3607 flow [2024-06-04 14:42:41,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:41,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:41,548 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 14:42:41,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 14:42:41,548 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 14:42:41,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:41,548 INFO L85 PathProgramCache]: Analyzing trace with hash 194413725, now seen corresponding path program 5 times [2024-06-04 14:42:41,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:41,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514489845] [2024-06-04 14:42:41,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:41,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:42,708 INFO 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 14:42:42,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:42,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514489845] [2024-06-04 14:42:42,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514489845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:42,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:42,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:42,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715449740] [2024-06-04 14:42:42,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:42,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:42,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:42,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:42,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:42,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:42,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 351 transitions, 3607 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:42,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:42,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:42,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:43,340 INFO L124 PetriNetUnfolderBase]: 945/1675 cut-off events. [2024-06-04 14:42:43,340 INFO L125 PetriNetUnfolderBase]: For 288708/288711 co-relation queries the response was YES. [2024-06-04 14:42:43,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12819 conditions, 1675 events. 945/1675 cut-off events. For 288708/288711 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9292 event pairs, 79 based on Foata normal form. 4/1678 useless extension candidates. Maximal degree in co-relation 12642. Up to 1321 conditions per place. [2024-06-04 14:42:43,361 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 292 selfloop transitions, 80 changer transitions 0/374 dead transitions. [2024-06-04 14:42:43,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 374 transitions, 4422 flow [2024-06-04 14:42:43,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:42:43,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:42:43,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 14:42:43,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-04 14:42:43,362 INFO L175 Difference]: Start difference. First operand has 384 places, 351 transitions, 3607 flow. Second operand 11 states and 141 transitions. [2024-06-04 14:42:43,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 374 transitions, 4422 flow [2024-06-04 14:42:44,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 374 transitions, 4304 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 14:42:44,452 INFO L231 Difference]: Finished difference. Result has 388 places, 351 transitions, 3653 flow [2024-06-04 14:42:44,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3489, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3653, PETRI_PLACES=388, PETRI_TRANSITIONS=351} [2024-06-04 14:42:44,452 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 356 predicate places. [2024-06-04 14:42:44,453 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 351 transitions, 3653 flow [2024-06-04 14:42:44,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:44,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:44,453 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 14:42:44,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 14:42:44,453 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 14:42:44,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:44,453 INFO L85 PathProgramCache]: Analyzing trace with hash -5251416, now seen corresponding path program 8 times [2024-06-04 14:42:44,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:44,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106591289] [2024-06-04 14:42:44,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:44,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:45,638 INFO 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 14:42:45,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:45,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106591289] [2024-06-04 14:42:45,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106591289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:45,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:45,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:45,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466346695] [2024-06-04 14:42:45,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:45,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:45,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:45,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:45,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:45,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:45,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 351 transitions, 3653 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:45,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:45,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:45,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:46,353 INFO L124 PetriNetUnfolderBase]: 956/1696 cut-off events. [2024-06-04 14:42:46,354 INFO L125 PetriNetUnfolderBase]: For 310647/310650 co-relation queries the response was YES. [2024-06-04 14:42:46,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13447 conditions, 1696 events. 956/1696 cut-off events. For 310647/310650 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9461 event pairs, 132 based on Foata normal form. 4/1699 useless extension candidates. Maximal degree in co-relation 13268. Up to 1337 conditions per place. [2024-06-04 14:42:46,377 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 279 selfloop transitions, 105 changer transitions 0/386 dead transitions. [2024-06-04 14:42:46,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 386 transitions, 4893 flow [2024-06-04 14:42:46,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:42:46,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:42:46,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 14:42:46,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-04 14:42:46,378 INFO L175 Difference]: Start difference. First operand has 388 places, 351 transitions, 3653 flow. Second operand 11 states and 140 transitions. [2024-06-04 14:42:46,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 386 transitions, 4893 flow [2024-06-04 14:42:47,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 386 transitions, 4695 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:42:47,436 INFO L231 Difference]: Finished difference. Result has 390 places, 363 transitions, 3894 flow [2024-06-04 14:42:47,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3463, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3894, PETRI_PLACES=390, PETRI_TRANSITIONS=363} [2024-06-04 14:42:47,436 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 358 predicate places. [2024-06-04 14:42:47,436 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 363 transitions, 3894 flow [2024-06-04 14:42:47,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:47,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:47,437 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 14:42:47,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 14:42:47,437 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 14:42:47,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:47,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1756981827, now seen corresponding path program 7 times [2024-06-04 14:42:47,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:47,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204771887] [2024-06-04 14:42:47,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:47,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:48,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:42:48,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:48,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204771887] [2024-06-04 14:42:48,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204771887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:48,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:48,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:48,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572340673] [2024-06-04 14:42:48,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:48,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:48,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:48,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:48,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:48,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:48,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 363 transitions, 3894 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:48,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:48,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:48,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:49,347 INFO L124 PetriNetUnfolderBase]: 968/1716 cut-off events. [2024-06-04 14:42:49,347 INFO L125 PetriNetUnfolderBase]: For 317035/317038 co-relation queries the response was YES. [2024-06-04 14:42:49,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13878 conditions, 1716 events. 968/1716 cut-off events. For 317035/317038 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9605 event pairs, 90 based on Foata normal form. 4/1719 useless extension candidates. Maximal degree in co-relation 13696. Up to 1166 conditions per place. [2024-06-04 14:42:49,370 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 275 selfloop transitions, 116 changer transitions 0/393 dead transitions. [2024-06-04 14:42:49,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 393 transitions, 4864 flow [2024-06-04 14:42:49,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:42:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:42:49,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-04 14:42:49,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38694638694638694 [2024-06-04 14:42:49,373 INFO L175 Difference]: Start difference. First operand has 390 places, 363 transitions, 3894 flow. Second operand 13 states and 166 transitions. [2024-06-04 14:42:49,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 393 transitions, 4864 flow [2024-06-04 14:42:50,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 393 transitions, 4756 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-04 14:42:50,577 INFO L231 Difference]: Finished difference. Result has 398 places, 367 transitions, 4137 flow [2024-06-04 14:42:50,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3786, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4137, PETRI_PLACES=398, PETRI_TRANSITIONS=367} [2024-06-04 14:42:50,589 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 366 predicate places. [2024-06-04 14:42:50,589 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 367 transitions, 4137 flow [2024-06-04 14:42:50,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:50,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:50,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:42:50,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 14:42:50,589 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 14:42:50,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:50,590 INFO L85 PathProgramCache]: Analyzing trace with hash 258834, now seen corresponding path program 9 times [2024-06-04 14:42:50,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:50,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127377753] [2024-06-04 14:42:50,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:50,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:51,641 INFO 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 14:42:51,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:51,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127377753] [2024-06-04 14:42:51,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127377753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:51,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:51,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:51,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544926396] [2024-06-04 14:42:51,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:51,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:51,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:51,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:51,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:51,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:51,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 367 transitions, 4137 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:51,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:51,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:51,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:52,203 INFO L124 PetriNetUnfolderBase]: 972/1724 cut-off events. [2024-06-04 14:42:52,203 INFO L125 PetriNetUnfolderBase]: For 321842/321845 co-relation queries the response was YES. [2024-06-04 14:42:52,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14181 conditions, 1724 events. 972/1724 cut-off events. For 321842/321845 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9654 event pairs, 132 based on Foata normal form. 4/1727 useless extension candidates. Maximal degree in co-relation 13997. Up to 1490 conditions per place. [2024-06-04 14:42:52,226 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 312 selfloop transitions, 76 changer transitions 0/390 dead transitions. [2024-06-04 14:42:52,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 390 transitions, 5023 flow [2024-06-04 14:42:52,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:52,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:52,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 14:42:52,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-04 14:42:52,228 INFO L175 Difference]: Start difference. First operand has 398 places, 367 transitions, 4137 flow. Second operand 12 states and 145 transitions. [2024-06-04 14:42:52,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 390 transitions, 5023 flow [2024-06-04 14:42:53,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 390 transitions, 4712 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-06-04 14:42:53,426 INFO L231 Difference]: Finished difference. Result has 400 places, 368 transitions, 4016 flow [2024-06-04 14:42:53,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4016, PETRI_PLACES=400, PETRI_TRANSITIONS=368} [2024-06-04 14:42:53,426 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 368 predicate places. [2024-06-04 14:42:53,426 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 368 transitions, 4016 flow [2024-06-04 14:42:53,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:53,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:53,427 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 14:42:53,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 14:42:53,427 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 14:42:53,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:53,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1956283617, now seen corresponding path program 8 times [2024-06-04 14:42:53,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:53,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095033260] [2024-06-04 14:42:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:53,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:54,700 INFO 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 14:42:54,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:54,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095033260] [2024-06-04 14:42:54,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095033260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:54,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:54,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:54,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931726335] [2024-06-04 14:42:54,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:54,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:54,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:54,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:54,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:54,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:54,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 368 transitions, 4016 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:54,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:54,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:54,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:55,559 INFO L124 PetriNetUnfolderBase]: 978/1734 cut-off events. [2024-06-04 14:42:55,559 INFO L125 PetriNetUnfolderBase]: For 326694/326697 co-relation queries the response was YES. [2024-06-04 14:42:55,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14148 conditions, 1734 events. 978/1734 cut-off events. For 326694/326697 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9757 event pairs, 100 based on Foata normal form. 4/1737 useless extension candidates. Maximal degree in co-relation 13963. Up to 1188 conditions per place. [2024-06-04 14:42:55,581 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 279 selfloop transitions, 115 changer transitions 0/396 dead transitions. [2024-06-04 14:42:55,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 396 transitions, 4972 flow [2024-06-04 14:42:55,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:42:55,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:42:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-04 14:42:55,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38927738927738925 [2024-06-04 14:42:55,582 INFO L175 Difference]: Start difference. First operand has 400 places, 368 transitions, 4016 flow. Second operand 13 states and 167 transitions. [2024-06-04 14:42:55,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 396 transitions, 4972 flow [2024-06-04 14:42:56,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 396 transitions, 4772 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-04 14:42:56,779 INFO L231 Difference]: Finished difference. Result has 403 places, 370 transitions, 4145 flow [2024-06-04 14:42:56,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3816, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4145, PETRI_PLACES=403, PETRI_TRANSITIONS=370} [2024-06-04 14:42:56,779 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 371 predicate places. [2024-06-04 14:42:56,779 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 370 transitions, 4145 flow [2024-06-04 14:42:56,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:56,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:56,780 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 14:42:56,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 14:42:56,780 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 14:42:56,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:56,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1956283772, now seen corresponding path program 10 times [2024-06-04 14:42:56,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:56,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565308230] [2024-06-04 14:42:56,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:56,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:42:57,812 INFO 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 14:42:57,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:42:57,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565308230] [2024-06-04 14:42:57,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565308230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:42:57,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:42:57,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:42:57,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426026478] [2024-06-04 14:42:57,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:42:57,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:42:57,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:42:57,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:42:57,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:42:57,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:42:57,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 370 transitions, 4145 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:57,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:42:57,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:42:57,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:42:58,517 INFO L124 PetriNetUnfolderBase]: 1002/1786 cut-off events. [2024-06-04 14:42:58,518 INFO L125 PetriNetUnfolderBase]: For 433515/433518 co-relation queries the response was YES. [2024-06-04 14:42:58,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14632 conditions, 1786 events. 1002/1786 cut-off events. For 433515/433518 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10129 event pairs, 98 based on Foata normal form. 16/1801 useless extension candidates. Maximal degree in co-relation 14446. Up to 1188 conditions per place. [2024-06-04 14:42:58,541 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 278 selfloop transitions, 109 changer transitions 12/401 dead transitions. [2024-06-04 14:42:58,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 401 transitions, 5163 flow [2024-06-04 14:42:58,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:42:58,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:42:58,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-04 14:42:58,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-04 14:42:58,542 INFO L175 Difference]: Start difference. First operand has 403 places, 370 transitions, 4145 flow. Second operand 12 states and 163 transitions. [2024-06-04 14:42:58,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 401 transitions, 5163 flow [2024-06-04 14:42:59,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 401 transitions, 4850 flow, removed 44 selfloop flow, removed 11 redundant places. [2024-06-04 14:42:59,906 INFO L231 Difference]: Finished difference. Result has 404 places, 366 transitions, 4046 flow [2024-06-04 14:42:59,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3832, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4046, PETRI_PLACES=404, PETRI_TRANSITIONS=366} [2024-06-04 14:42:59,907 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 372 predicate places. [2024-06-04 14:42:59,907 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 366 transitions, 4046 flow [2024-06-04 14:42:59,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:42:59,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:42:59,907 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 14:42:59,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 14:42:59,907 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 14:42:59,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:42:59,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1950921237, now seen corresponding path program 9 times [2024-06-04 14:42:59,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:42:59,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118011751] [2024-06-04 14:42:59,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:42:59,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:42:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:00,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:00,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118011751] [2024-06-04 14:43:00,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118011751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:00,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:00,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:43:00,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814093456] [2024-06-04 14:43:00,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:00,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:43:00,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:00,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:43:00,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:43:01,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:43:01,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 366 transitions, 4046 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:01,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:01,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:43:01,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:01,654 INFO L124 PetriNetUnfolderBase]: 974/1730 cut-off events. [2024-06-04 14:43:01,655 INFO L125 PetriNetUnfolderBase]: For 336903/336906 co-relation queries the response was YES. [2024-06-04 14:43:01,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14288 conditions, 1730 events. 974/1730 cut-off events. For 336903/336906 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9724 event pairs, 81 based on Foata normal form. 4/1733 useless extension candidates. Maximal degree in co-relation 14102. Up to 1142 conditions per place. [2024-06-04 14:43:01,681 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 268 selfloop transitions, 123 changer transitions 0/393 dead transitions. [2024-06-04 14:43:01,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 393 transitions, 4998 flow [2024-06-04 14:43:01,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:43:01,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:43:01,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-04 14:43:01,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:43:01,682 INFO L175 Difference]: Start difference. First operand has 404 places, 366 transitions, 4046 flow. Second operand 12 states and 162 transitions. [2024-06-04 14:43:01,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 393 transitions, 4998 flow [2024-06-04 14:43:02,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 393 transitions, 4735 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-04 14:43:02,925 INFO L231 Difference]: Finished difference. Result has 403 places, 368 transitions, 4132 flow [2024-06-04 14:43:02,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3783, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4132, PETRI_PLACES=403, PETRI_TRANSITIONS=368} [2024-06-04 14:43:02,925 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 371 predicate places. [2024-06-04 14:43:02,925 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 368 transitions, 4132 flow [2024-06-04 14:43:02,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:02,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:02,926 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 14:43:02,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 14:43:02,926 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 14:43:02,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:02,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1956427767, now seen corresponding path program 10 times [2024-06-04 14:43:02,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:02,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048264807] [2024-06-04 14:43:02,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:02,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:03,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:03,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048264807] [2024-06-04 14:43:03,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048264807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:03,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:03,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:43:03,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651369401] [2024-06-04 14:43:03,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:03,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:43:03,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:03,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:43:03,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:43:04,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:43:04,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 368 transitions, 4132 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:04,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:04,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:43:04,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:04,718 INFO L124 PetriNetUnfolderBase]: 980/1740 cut-off events. [2024-06-04 14:43:04,718 INFO L125 PetriNetUnfolderBase]: For 342850/342853 co-relation queries the response was YES. [2024-06-04 14:43:04,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14492 conditions, 1740 events. 980/1740 cut-off events. For 342850/342853 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9771 event pairs, 79 based on Foata normal form. 4/1743 useless extension candidates. Maximal degree in co-relation 14305. Up to 1110 conditions per place. [2024-06-04 14:43:04,741 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 254 selfloop transitions, 138 changer transitions 0/394 dead transitions. [2024-06-04 14:43:04,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 394 transitions, 5086 flow [2024-06-04 14:43:04,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:43:04,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:43:04,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-04 14:43:04,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-04 14:43:04,742 INFO L175 Difference]: Start difference. First operand has 403 places, 368 transitions, 4132 flow. Second operand 12 states and 160 transitions. [2024-06-04 14:43:04,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 394 transitions, 5086 flow [2024-06-04 14:43:05,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 394 transitions, 4753 flow, removed 45 selfloop flow, removed 10 redundant places. [2024-06-04 14:43:05,960 INFO L231 Difference]: Finished difference. Result has 405 places, 370 transitions, 4182 flow [2024-06-04 14:43:05,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3799, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4182, PETRI_PLACES=405, PETRI_TRANSITIONS=370} [2024-06-04 14:43:05,960 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 373 predicate places. [2024-06-04 14:43:05,960 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 370 transitions, 4182 flow [2024-06-04 14:43:05,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:05,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:05,961 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 14:43:05,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 14:43:05,961 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 14:43:05,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:05,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1956427922, now seen corresponding path program 11 times [2024-06-04 14:43:05,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:05,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250476777] [2024-06-04 14:43:05,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:05,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:06,980 INFO 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 14:43:06,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:06,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250476777] [2024-06-04 14:43:06,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250476777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:06,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:06,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:43:06,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175882559] [2024-06-04 14:43:06,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:06,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:43:06,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:06,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:43:06,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:43:07,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:43:07,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 370 transitions, 4182 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:07,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:07,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:43:07,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:07,727 INFO L124 PetriNetUnfolderBase]: 977/1735 cut-off events. [2024-06-04 14:43:07,728 INFO L125 PetriNetUnfolderBase]: For 328744/328747 co-relation queries the response was YES. [2024-06-04 14:43:07,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14164 conditions, 1735 events. 977/1735 cut-off events. For 328744/328747 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9765 event pairs, 91 based on Foata normal form. 4/1738 useless extension candidates. Maximal degree in co-relation 13976. Up to 1165 conditions per place. [2024-06-04 14:43:07,751 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 271 selfloop transitions, 122 changer transitions 0/395 dead transitions. [2024-06-04 14:43:07,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 395 transitions, 5040 flow [2024-06-04 14:43:07,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:43:07,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:43:07,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-04 14:43:07,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-04 14:43:07,753 INFO L175 Difference]: Start difference. First operand has 405 places, 370 transitions, 4182 flow. Second operand 13 states and 165 transitions. [2024-06-04 14:43:07,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 395 transitions, 5040 flow [2024-06-04 14:43:09,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 395 transitions, 4587 flow, removed 62 selfloop flow, removed 12 redundant places. [2024-06-04 14:43:09,145 INFO L231 Difference]: Finished difference. Result has 406 places, 370 transitions, 3979 flow [2024-06-04 14:43:09,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3729, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3979, PETRI_PLACES=406, PETRI_TRANSITIONS=370} [2024-06-04 14:43:09,146 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 374 predicate places. [2024-06-04 14:43:09,146 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 370 transitions, 3979 flow [2024-06-04 14:43:09,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:09,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:09,146 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 14:43:09,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 14:43:09,147 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 14:43:09,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:09,147 INFO L85 PathProgramCache]: Analyzing trace with hash -91004668, now seen corresponding path program 12 times [2024-06-04 14:43:09,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:09,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871047275] [2024-06-04 14:43:09,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:09,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:10,139 INFO 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 14:43:10,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:10,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871047275] [2024-06-04 14:43:10,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871047275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:10,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:10,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:43:10,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350558943] [2024-06-04 14:43:10,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:10,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:43:10,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:10,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:43:10,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:43:10,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:43:10,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 370 transitions, 3979 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:10,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:10,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:43:10,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:10,946 INFO L124 PetriNetUnfolderBase]: 1024/1830 cut-off events. [2024-06-04 14:43:10,946 INFO L125 PetriNetUnfolderBase]: For 457933/457933 co-relation queries the response was YES. [2024-06-04 14:43:10,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16433 conditions, 1830 events. 1024/1830 cut-off events. For 457933/457933 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10352 event pairs, 122 based on Foata normal form. 2/1831 useless extension candidates. Maximal degree in co-relation 16246. Up to 1114 conditions per place. [2024-06-04 14:43:10,970 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 273 selfloop transitions, 126 changer transitions 0/401 dead transitions. [2024-06-04 14:43:10,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 401 transitions, 5579 flow [2024-06-04 14:43:10,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:43:10,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:43:10,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-04 14:43:10,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-04 14:43:10,972 INFO L175 Difference]: Start difference. First operand has 406 places, 370 transitions, 3979 flow. Second operand 12 states and 163 transitions. [2024-06-04 14:43:10,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 401 transitions, 5579 flow [2024-06-04 14:43:12,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 401 transitions, 5319 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 14:43:12,689 INFO L231 Difference]: Finished difference. Result has 406 places, 372 transitions, 4057 flow [2024-06-04 14:43:12,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3723, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4057, PETRI_PLACES=406, PETRI_TRANSITIONS=372} [2024-06-04 14:43:12,690 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 374 predicate places. [2024-06-04 14:43:12,690 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 372 transitions, 4057 flow [2024-06-04 14:43:12,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:12,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:12,690 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 14:43:12,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 14:43:12,691 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 14:43:12,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:12,691 INFO L85 PathProgramCache]: Analyzing trace with hash -90856798, now seen corresponding path program 13 times [2024-06-04 14:43:12,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:12,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135154807] [2024-06-04 14:43:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:12,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:13,697 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 14:43:13,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:13,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135154807] [2024-06-04 14:43:13,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135154807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:13,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:13,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:43:13,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998030306] [2024-06-04 14:43:13,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:13,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:43:13,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:13,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:43:13,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:43:13,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:43:13,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 372 transitions, 4057 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:13,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:13,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:43:13,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:14,430 INFO L124 PetriNetUnfolderBase]: 1048/1882 cut-off events. [2024-06-04 14:43:14,431 INFO L125 PetriNetUnfolderBase]: For 566373/566373 co-relation queries the response was YES. [2024-06-04 14:43:14,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16845 conditions, 1882 events. 1048/1882 cut-off events. For 566373/566373 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 10784 event pairs, 135 based on Foata normal form. 14/1895 useless extension candidates. Maximal degree in co-relation 16657. Up to 1288 conditions per place. [2024-06-04 14:43:14,456 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 280 selfloop transitions, 106 changer transitions 12/400 dead transitions. [2024-06-04 14:43:14,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 400 transitions, 5077 flow [2024-06-04 14:43:14,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:43:14,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:43:14,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-04 14:43:14,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-04 14:43:14,457 INFO L175 Difference]: Start difference. First operand has 406 places, 372 transitions, 4057 flow. Second operand 12 states and 161 transitions. [2024-06-04 14:43:14,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 400 transitions, 5077 flow [2024-06-04 14:43:16,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 400 transitions, 4868 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-04 14:43:16,296 INFO L231 Difference]: Finished difference. Result has 410 places, 368 transitions, 4056 flow [2024-06-04 14:43:16,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3854, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4056, PETRI_PLACES=410, PETRI_TRANSITIONS=368} [2024-06-04 14:43:16,296 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 378 predicate places. [2024-06-04 14:43:16,296 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 368 transitions, 4056 flow [2024-06-04 14:43:16,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:16,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:16,297 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 14:43:16,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 14:43:16,297 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 14:43:16,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:16,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1602868569, now seen corresponding path program 6 times [2024-06-04 14:43:16,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:16,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311094291] [2024-06-04 14:43:16,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:16,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:17,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:17,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311094291] [2024-06-04 14:43:17,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311094291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:17,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:17,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:43:17,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044015122] [2024-06-04 14:43:17,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:17,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:43:17,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:17,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:43:17,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:43:17,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:43:17,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 368 transitions, 4056 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:17,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:17,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:43:17,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:18,295 INFO L124 PetriNetUnfolderBase]: 1030/1844 cut-off events. [2024-06-04 14:43:18,295 INFO L125 PetriNetUnfolderBase]: For 463790/463790 co-relation queries the response was YES. [2024-06-04 14:43:18,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16705 conditions, 1844 events. 1030/1844 cut-off events. For 463790/463790 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10488 event pairs, 107 based on Foata normal form. 2/1845 useless extension candidates. Maximal degree in co-relation 16515. Up to 1505 conditions per place. [2024-06-04 14:43:18,322 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 316 selfloop transitions, 75 changer transitions 0/393 dead transitions. [2024-06-04 14:43:18,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 393 transitions, 4971 flow [2024-06-04 14:43:18,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:43:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:43:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 14:43:18,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-04 14:43:18,323 INFO L175 Difference]: Start difference. First operand has 410 places, 368 transitions, 4056 flow. Second operand 11 states and 139 transitions. [2024-06-04 14:43:18,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 393 transitions, 4971 flow [2024-06-04 14:43:19,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 393 transitions, 4721 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-04 14:43:19,888 INFO L231 Difference]: Finished difference. Result has 410 places, 373 transitions, 4032 flow [2024-06-04 14:43:19,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3814, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4032, PETRI_PLACES=410, PETRI_TRANSITIONS=373} [2024-06-04 14:43:19,889 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 378 predicate places. [2024-06-04 14:43:19,889 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 373 transitions, 4032 flow [2024-06-04 14:43:19,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:19,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:19,889 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 14:43:19,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 14:43:19,889 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 14:43:19,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:19,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1860179433, now seen corresponding path program 11 times [2024-06-04 14:43:19,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:19,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529137973] [2024-06-04 14:43:19,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:19,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:20,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:20,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:20,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529137973] [2024-06-04 14:43:20,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529137973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:20,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:20,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:43:20,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997760773] [2024-06-04 14:43:20,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:20,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:43:20,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:20,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:43:20,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:43:21,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:43:21,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 373 transitions, 4032 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:21,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:21,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:43:21,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:21,638 INFO L124 PetriNetUnfolderBase]: 1046/1870 cut-off events. [2024-06-04 14:43:21,639 INFO L125 PetriNetUnfolderBase]: For 487878/487878 co-relation queries the response was YES. [2024-06-04 14:43:21,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17331 conditions, 1870 events. 1046/1870 cut-off events. For 487878/487878 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10668 event pairs, 125 based on Foata normal form. 2/1871 useless extension candidates. Maximal degree in co-relation 17140. Up to 1221 conditions per place. [2024-06-04 14:43:21,659 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 261 selfloop transitions, 136 changer transitions 0/399 dead transitions. [2024-06-04 14:43:21,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 399 transitions, 5368 flow [2024-06-04 14:43:21,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:43:21,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:43:21,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-04 14:43:21,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-04 14:43:21,660 INFO L175 Difference]: Start difference. First operand has 410 places, 373 transitions, 4032 flow. Second operand 12 states and 159 transitions. [2024-06-04 14:43:21,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 399 transitions, 5368 flow [2024-06-04 14:43:23,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 399 transitions, 5219 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 14:43:23,575 INFO L231 Difference]: Finished difference. Result has 416 places, 377 transitions, 4368 flow [2024-06-04 14:43:23,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3883, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4368, PETRI_PLACES=416, PETRI_TRANSITIONS=377} [2024-06-04 14:43:23,575 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 384 predicate places. [2024-06-04 14:43:23,575 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 377 transitions, 4368 flow [2024-06-04 14:43:23,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:23,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:23,575 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 14:43:23,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 14:43:23,576 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 14:43:23,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:23,576 INFO L85 PathProgramCache]: Analyzing trace with hash 2059840699, now seen corresponding path program 7 times [2024-06-04 14:43:23,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:23,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968507519] [2024-06-04 14:43:23,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:23,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:43:24,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:24,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968507519] [2024-06-04 14:43:24,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968507519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:24,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:24,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:43:24,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150998523] [2024-06-04 14:43:24,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:24,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:43:24,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:24,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:43:24,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:43:24,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:43:24,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 377 transitions, 4368 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:24,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:24,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:43:24,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:25,378 INFO L124 PetriNetUnfolderBase]: 1056/1888 cut-off events. [2024-06-04 14:43:25,379 INFO L125 PetriNetUnfolderBase]: For 501230/501230 co-relation queries the response was YES. [2024-06-04 14:43:25,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17669 conditions, 1888 events. 1056/1888 cut-off events. For 501230/501230 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10809 event pairs, 118 based on Foata normal form. 2/1889 useless extension candidates. Maximal degree in co-relation 17477. Up to 1520 conditions per place. [2024-06-04 14:43:25,404 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 320 selfloop transitions, 79 changer transitions 0/401 dead transitions. [2024-06-04 14:43:25,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 401 transitions, 5278 flow [2024-06-04 14:43:25,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:43:25,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:43:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 14:43:25,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-04 14:43:25,406 INFO L175 Difference]: Start difference. First operand has 416 places, 377 transitions, 4368 flow. Second operand 11 states and 143 transitions. [2024-06-04 14:43:25,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 401 transitions, 5278 flow [2024-06-04 14:43:27,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 401 transitions, 4996 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-04 14:43:27,305 INFO L231 Difference]: Finished difference. Result has 419 places, 380 transitions, 4295 flow [2024-06-04 14:43:27,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4089, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4295, PETRI_PLACES=419, PETRI_TRANSITIONS=380} [2024-06-04 14:43:27,305 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 387 predicate places. [2024-06-04 14:43:27,305 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 380 transitions, 4295 flow [2024-06-04 14:43:27,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:27,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:27,306 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 14:43:27,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 14:43:27,306 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 14:43:27,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:27,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1860179278, now seen corresponding path program 14 times [2024-06-04 14:43:27,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:27,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807525919] [2024-06-04 14:43:27,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:27,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:28,590 INFO 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 14:43:28,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:28,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807525919] [2024-06-04 14:43:28,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807525919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:28,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:28,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:43:28,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006752223] [2024-06-04 14:43:28,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:28,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:43:28,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:28,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:43:28,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:43:28,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:43:28,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 380 transitions, 4295 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:28,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:28,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:43:28,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:29,473 INFO L124 PetriNetUnfolderBase]: 1060/1896 cut-off events. [2024-06-04 14:43:29,473 INFO L125 PetriNetUnfolderBase]: For 505841/505841 co-relation queries the response was YES. [2024-06-04 14:43:29,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17697 conditions, 1896 events. 1060/1896 cut-off events. For 505841/505841 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10891 event pairs, 160 based on Foata normal form. 2/1897 useless extension candidates. Maximal degree in co-relation 17503. Up to 1556 conditions per place. [2024-06-04 14:43:29,500 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 295 selfloop transitions, 102 changer transitions 0/399 dead transitions. [2024-06-04 14:43:29,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 399 transitions, 5199 flow [2024-06-04 14:43:29,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:43:29,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:43:29,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 14:43:29,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-04 14:43:29,501 INFO L175 Difference]: Start difference. First operand has 419 places, 380 transitions, 4295 flow. Second operand 11 states and 137 transitions. [2024-06-04 14:43:29,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 399 transitions, 5199 flow [2024-06-04 14:43:31,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 399 transitions, 5019 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 14:43:31,467 INFO L231 Difference]: Finished difference. Result has 422 places, 381 transitions, 4371 flow [2024-06-04 14:43:31,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4123, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4371, PETRI_PLACES=422, PETRI_TRANSITIONS=381} [2024-06-04 14:43:31,467 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 390 predicate places. [2024-06-04 14:43:31,467 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 381 transitions, 4371 flow [2024-06-04 14:43:31,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:31,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:31,468 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 14:43:31,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 14:43:31,468 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 14:43:31,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:31,469 INFO L85 PathProgramCache]: Analyzing trace with hash 340902347, now seen corresponding path program 8 times [2024-06-04 14:43:31,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:31,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967472738] [2024-06-04 14:43:31,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:31,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:32,717 INFO 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 14:43:32,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:32,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967472738] [2024-06-04 14:43:32,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967472738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:32,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:32,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:43:32,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125776205] [2024-06-04 14:43:32,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:32,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:43:32,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:32,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:43:32,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:43:32,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:43:32,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 381 transitions, 4371 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:32,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:32,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:43:32,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:33,312 INFO L124 PetriNetUnfolderBase]: 1064/1904 cut-off events. [2024-06-04 14:43:33,312 INFO L125 PetriNetUnfolderBase]: For 508302/508302 co-relation queries the response was YES. [2024-06-04 14:43:33,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17805 conditions, 1904 events. 1064/1904 cut-off events. For 508302/508302 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10946 event pairs, 112 based on Foata normal form. 2/1905 useless extension candidates. Maximal degree in co-relation 17610. Up to 1536 conditions per place. [2024-06-04 14:43:33,339 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 317 selfloop transitions, 83 changer transitions 0/402 dead transitions. [2024-06-04 14:43:33,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 402 transitions, 5256 flow [2024-06-04 14:43:33,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:43:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:43:33,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 14:43:33,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-04 14:43:33,340 INFO L175 Difference]: Start difference. First operand has 422 places, 381 transitions, 4371 flow. Second operand 11 states and 139 transitions. [2024-06-04 14:43:33,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 402 transitions, 5256 flow [2024-06-04 14:43:35,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 402 transitions, 5068 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-04 14:43:35,297 INFO L231 Difference]: Finished difference. Result has 426 places, 382 transitions, 4376 flow [2024-06-04 14:43:35,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4184, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4376, PETRI_PLACES=426, PETRI_TRANSITIONS=382} [2024-06-04 14:43:35,305 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 394 predicate places. [2024-06-04 14:43:35,306 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 382 transitions, 4376 flow [2024-06-04 14:43:35,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:35,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:35,306 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 14:43:35,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 14:43:35,306 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 14:43:35,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:35,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2067250009, now seen corresponding path program 9 times [2024-06-04 14:43:35,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:35,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781828075] [2024-06-04 14:43:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:35,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:36,674 INFO 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 14:43:36,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:36,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781828075] [2024-06-04 14:43:36,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781828075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:36,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:36,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:43:36,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489579799] [2024-06-04 14:43:36,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:36,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:43:36,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:36,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:43:36,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:43:36,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:43:36,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 382 transitions, 4376 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:36,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:36,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:43:36,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:37,531 INFO L124 PetriNetUnfolderBase]: 1068/1912 cut-off events. [2024-06-04 14:43:37,531 INFO L125 PetriNetUnfolderBase]: For 512873/512873 co-relation queries the response was YES. [2024-06-04 14:43:37,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17814 conditions, 1912 events. 1068/1912 cut-off events. For 512873/512873 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 11006 event pairs, 112 based on Foata normal form. 2/1913 useless extension candidates. Maximal degree in co-relation 17618. Up to 1544 conditions per place. [2024-06-04 14:43:37,560 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 321 selfloop transitions, 80 changer transitions 0/403 dead transitions. [2024-06-04 14:43:37,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 403 transitions, 5264 flow [2024-06-04 14:43:37,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:43:37,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:43:37,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 14:43:37,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-04 14:43:37,561 INFO L175 Difference]: Start difference. First operand has 426 places, 382 transitions, 4376 flow. Second operand 11 states and 141 transitions. [2024-06-04 14:43:37,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 403 transitions, 5264 flow [2024-06-04 14:43:39,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 403 transitions, 5078 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-04 14:43:39,473 INFO L231 Difference]: Finished difference. Result has 428 places, 383 transitions, 4378 flow [2024-06-04 14:43:39,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4190, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4378, PETRI_PLACES=428, PETRI_TRANSITIONS=383} [2024-06-04 14:43:39,473 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 396 predicate places. [2024-06-04 14:43:39,473 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 383 transitions, 4378 flow [2024-06-04 14:43:39,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:39,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:39,474 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 14:43:39,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 14:43:39,475 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 14:43:39,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:39,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1865901289, now seen corresponding path program 10 times [2024-06-04 14:43:39,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:39,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623739288] [2024-06-04 14:43:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:39,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:40,441 INFO 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 14:43:40,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:40,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623739288] [2024-06-04 14:43:40,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623739288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:40,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:40,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 14:43:40,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517573999] [2024-06-04 14:43:40,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:40,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 14:43:40,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:40,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 14:43:40,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-04 14:43:40,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:43:40,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 383 transitions, 4378 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:40,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:40,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:43:40,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:41,173 INFO L124 PetriNetUnfolderBase]: 1072/1920 cut-off events. [2024-06-04 14:43:41,173 INFO L125 PetriNetUnfolderBase]: For 520074/520074 co-relation queries the response was YES. [2024-06-04 14:43:41,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17891 conditions, 1920 events. 1072/1920 cut-off events. For 520074/520074 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 11080 event pairs, 123 based on Foata normal form. 2/1921 useless extension candidates. Maximal degree in co-relation 17694. Up to 1577 conditions per place. [2024-06-04 14:43:41,203 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 325 selfloop transitions, 77 changer transitions 0/404 dead transitions. [2024-06-04 14:43:41,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 404 transitions, 5270 flow [2024-06-04 14:43:41,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:43:41,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:43:41,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 14:43:41,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-04 14:43:41,204 INFO L175 Difference]: Start difference. First operand has 428 places, 383 transitions, 4378 flow. Second operand 11 states and 139 transitions. [2024-06-04 14:43:41,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 404 transitions, 5270 flow [2024-06-04 14:43:43,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 404 transitions, 5101 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-04 14:43:43,182 INFO L231 Difference]: Finished difference. Result has 432 places, 384 transitions, 4393 flow [2024-06-04 14:43:43,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4209, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4393, PETRI_PLACES=432, PETRI_TRANSITIONS=384} [2024-06-04 14:43:43,187 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 400 predicate places. [2024-06-04 14:43:43,187 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 384 transitions, 4393 flow [2024-06-04 14:43:43,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:43,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:43,188 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 14:43:43,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 14:43:43,188 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 14:43:43,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:43,197 INFO L85 PathProgramCache]: Analyzing trace with hash 348320957, now seen corresponding path program 11 times [2024-06-04 14:43:43,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:43,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845099348] [2024-06-04 14:43:43,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:43,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:44,198 INFO 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 14:43:44,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:44,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845099348] [2024-06-04 14:43:44,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845099348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:44,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:44,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:43:44,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095735351] [2024-06-04 14:43:44,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:44,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:43:44,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:44,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:43:44,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:43:44,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:43:44,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 384 transitions, 4393 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:44,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:44,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:43:44,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:44,903 INFO L124 PetriNetUnfolderBase]: 1076/1928 cut-off events. [2024-06-04 14:43:44,903 INFO L125 PetriNetUnfolderBase]: For 527421/527421 co-relation queries the response was YES. [2024-06-04 14:43:44,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17974 conditions, 1928 events. 1076/1928 cut-off events. For 527421/527421 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 11130 event pairs, 116 based on Foata normal form. 2/1929 useless extension candidates. Maximal degree in co-relation 17776. Up to 1565 conditions per place. [2024-06-04 14:43:44,933 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 324 selfloop transitions, 79 changer transitions 0/405 dead transitions. [2024-06-04 14:43:44,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 405 transitions, 5287 flow [2024-06-04 14:43:44,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:43:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:43:44,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-04 14:43:44,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-04 14:43:44,936 INFO L175 Difference]: Start difference. First operand has 432 places, 384 transitions, 4393 flow. Second operand 11 states and 139 transitions. [2024-06-04 14:43:44,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 405 transitions, 5287 flow [2024-06-04 14:43:46,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 405 transitions, 5099 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-04 14:43:46,540 INFO L231 Difference]: Finished difference. Result has 433 places, 385 transitions, 4395 flow [2024-06-04 14:43:46,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4205, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4395, PETRI_PLACES=433, PETRI_TRANSITIONS=385} [2024-06-04 14:43:46,541 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 401 predicate places. [2024-06-04 14:43:46,541 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 385 transitions, 4395 flow [2024-06-04 14:43:46,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:46,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:46,541 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 14:43:46,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 14:43:46,542 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 14:43:46,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:46,542 INFO L85 PathProgramCache]: Analyzing trace with hash -85494418, now seen corresponding path program 15 times [2024-06-04 14:43:46,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:46,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110282375] [2024-06-04 14:43:46,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:46,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:46,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:47,481 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 14:43:47,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:47,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110282375] [2024-06-04 14:43:47,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110282375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:47,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:47,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:43:47,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172819291] [2024-06-04 14:43:47,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:47,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:43:47,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:47,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:43:47,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:43:47,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:43:47,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 385 transitions, 4395 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:47,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:47,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:43:47,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:48,206 INFO L124 PetriNetUnfolderBase]: 1100/1980 cut-off events. [2024-06-04 14:43:48,207 INFO L125 PetriNetUnfolderBase]: For 650895/650895 co-relation queries the response was YES. [2024-06-04 14:43:48,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18381 conditions, 1980 events. 1100/1980 cut-off events. For 650895/650895 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 11548 event pairs, 143 based on Foata normal form. 14/1993 useless extension candidates. Maximal degree in co-relation 18182. Up to 1368 conditions per place. [2024-06-04 14:43:48,235 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 296 selfloop transitions, 102 changer transitions 13/413 dead transitions. [2024-06-04 14:43:48,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 413 transitions, 5437 flow [2024-06-04 14:43:48,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:43:48,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:43:48,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-04 14:43:48,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:43:48,236 INFO L175 Difference]: Start difference. First operand has 433 places, 385 transitions, 4395 flow. Second operand 12 states and 162 transitions. [2024-06-04 14:43:48,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 413 transitions, 5437 flow [2024-06-04 14:43:50,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 413 transitions, 5257 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-04 14:43:50,176 INFO L231 Difference]: Finished difference. Result has 436 places, 380 transitions, 4395 flow [2024-06-04 14:43:50,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4215, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4395, PETRI_PLACES=436, PETRI_TRANSITIONS=380} [2024-06-04 14:43:50,177 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 404 predicate places. [2024-06-04 14:43:50,177 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 380 transitions, 4395 flow [2024-06-04 14:43:50,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:50,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:50,177 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 14:43:50,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 14:43:50,177 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 14:43:50,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:50,178 INFO L85 PathProgramCache]: Analyzing trace with hash -90856643, now seen corresponding path program 12 times [2024-06-04 14:43:50,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:50,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882285375] [2024-06-04 14:43:50,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:50,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:51,586 INFO 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 14:43:51,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:51,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882285375] [2024-06-04 14:43:51,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882285375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:51,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:51,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:43:51,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716048210] [2024-06-04 14:43:51,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:51,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:43:51,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:43:51,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:43:51,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:43:51,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 380 transitions, 4395 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:51,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:51,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:43:51,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:52,478 INFO L124 PetriNetUnfolderBase]: 1068/1920 cut-off events. [2024-06-04 14:43:52,478 INFO L125 PetriNetUnfolderBase]: For 544239/544239 co-relation queries the response was YES. [2024-06-04 14:43:52,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18118 conditions, 1920 events. 1068/1920 cut-off events. For 544239/544239 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 11137 event pairs, 132 based on Foata normal form. 2/1921 useless extension candidates. Maximal degree in co-relation 17918. Up to 1378 conditions per place. [2024-06-04 14:43:52,508 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 290 selfloop transitions, 110 changer transitions 0/402 dead transitions. [2024-06-04 14:43:52,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 402 transitions, 5343 flow [2024-06-04 14:43:52,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:43:52,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:43:52,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 14:43:52,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-04 14:43:52,509 INFO L175 Difference]: Start difference. First operand has 436 places, 380 transitions, 4395 flow. Second operand 12 states and 152 transitions. [2024-06-04 14:43:52,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 402 transitions, 5343 flow [2024-06-04 14:43:54,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 402 transitions, 5101 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-04 14:43:54,088 INFO L231 Difference]: Finished difference. Result has 437 places, 382 transitions, 4472 flow [2024-06-04 14:43:54,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4153, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4472, PETRI_PLACES=437, PETRI_TRANSITIONS=382} [2024-06-04 14:43:54,089 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 405 predicate places. [2024-06-04 14:43:54,089 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 382 transitions, 4472 flow [2024-06-04 14:43:54,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:54,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:54,089 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 14:43:54,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 14:43:54,089 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 14:43:54,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:54,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1157557965, now seen corresponding path program 13 times [2024-06-04 14:43:54,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:54,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924106735] [2024-06-04 14:43:54,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:54,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:55,130 INFO 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 14:43:55,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:55,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924106735] [2024-06-04 14:43:55,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924106735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:55,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:55,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:43:55,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984926511] [2024-06-04 14:43:55,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:55,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:43:55,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:55,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:43:55,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:43:55,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:43:55,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 382 transitions, 4472 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:55,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:55,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:43:55,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:55,907 INFO L124 PetriNetUnfolderBase]: 1080/1940 cut-off events. [2024-06-04 14:43:55,907 INFO L125 PetriNetUnfolderBase]: For 547337/547337 co-relation queries the response was YES. [2024-06-04 14:43:55,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18382 conditions, 1940 events. 1080/1940 cut-off events. For 547337/547337 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11335 event pairs, 131 based on Foata normal form. 2/1941 useless extension candidates. Maximal degree in co-relation 18181. Up to 1382 conditions per place. [2024-06-04 14:43:55,940 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 292 selfloop transitions, 115 changer transitions 0/409 dead transitions. [2024-06-04 14:43:55,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 409 transitions, 5479 flow [2024-06-04 14:43:55,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:43:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:43:55,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-04 14:43:55,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822843822843823 [2024-06-04 14:43:55,941 INFO L175 Difference]: Start difference. First operand has 437 places, 382 transitions, 4472 flow. Second operand 13 states and 164 transitions. [2024-06-04 14:43:55,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 409 transitions, 5479 flow [2024-06-04 14:43:57,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 409 transitions, 5176 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-06-04 14:43:57,676 INFO L231 Difference]: Finished difference. Result has 440 places, 386 transitions, 4533 flow [2024-06-04 14:43:57,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4173, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4533, PETRI_PLACES=440, PETRI_TRANSITIONS=386} [2024-06-04 14:43:57,676 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 408 predicate places. [2024-06-04 14:43:57,676 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 386 transitions, 4533 flow [2024-06-04 14:43:57,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:57,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:43:57,677 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 14:43:57,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 14:43:57,677 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 14:43:57,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:43:57,677 INFO L85 PathProgramCache]: Analyzing trace with hash -85494263, now seen corresponding path program 14 times [2024-06-04 14:43:57,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:43:57,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056030351] [2024-06-04 14:43:57,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:43:57,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:43:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:43:58,631 INFO 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 14:43:58,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:43:58,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056030351] [2024-06-04 14:43:58,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056030351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:43:58,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:43:58,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:43:58,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464585549] [2024-06-04 14:43:58,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:43:58,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:43:58,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:43:58,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:43:58,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:43:58,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:43:58,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 386 transitions, 4533 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:43:58,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:43:58,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:43:58,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:43:59,346 INFO L124 PetriNetUnfolderBase]: 1086/1950 cut-off events. [2024-06-04 14:43:59,346 INFO L125 PetriNetUnfolderBase]: For 555075/555075 co-relation queries the response was YES. [2024-06-04 14:43:59,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18494 conditions, 1950 events. 1086/1950 cut-off events. For 555075/555075 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 11372 event pairs, 131 based on Foata normal form. 2/1951 useless extension candidates. Maximal degree in co-relation 18292. Up to 1356 conditions per place. [2024-06-04 14:43:59,427 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 289 selfloop transitions, 117 changer transitions 0/408 dead transitions. [2024-06-04 14:43:59,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 408 transitions, 5501 flow [2024-06-04 14:43:59,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:43:59,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:43:59,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-04 14:43:59,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-06-04 14:43:59,428 INFO L175 Difference]: Start difference. First operand has 440 places, 386 transitions, 4533 flow. Second operand 12 states and 155 transitions. [2024-06-04 14:43:59,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 408 transitions, 5501 flow [2024-06-04 14:44:01,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 408 transitions, 5188 flow, removed 44 selfloop flow, removed 10 redundant places. [2024-06-04 14:44:01,194 INFO L231 Difference]: Finished difference. Result has 442 places, 388 transitions, 4561 flow [2024-06-04 14:44:01,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4220, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4561, PETRI_PLACES=442, PETRI_TRANSITIONS=388} [2024-06-04 14:44:01,194 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 410 predicate places. [2024-06-04 14:44:01,194 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 388 transitions, 4561 flow [2024-06-04 14:44:01,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:01,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:01,195 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 14:44:01,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 14:44:01,195 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 14:44:01,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:01,196 INFO L85 PathProgramCache]: Analyzing trace with hash 116079083, now seen corresponding path program 12 times [2024-06-04 14:44:01,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:01,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088258392] [2024-06-04 14:44:01,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:01,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:02,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:02,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088258392] [2024-06-04 14:44:02,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088258392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:02,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:02,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:44:02,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866968773] [2024-06-04 14:44:02,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:02,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:44:02,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:02,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:44:02,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:44:02,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:44:02,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 388 transitions, 4561 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:02,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:02,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:44:02,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:03,105 INFO L124 PetriNetUnfolderBase]: 1090/1958 cut-off events. [2024-06-04 14:44:03,106 INFO L125 PetriNetUnfolderBase]: For 561671/561671 co-relation queries the response was YES. [2024-06-04 14:44:03,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18494 conditions, 1958 events. 1090/1958 cut-off events. For 561671/561671 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 11458 event pairs, 135 based on Foata normal form. 2/1959 useless extension candidates. Maximal degree in co-relation 18291. Up to 1589 conditions per place. [2024-06-04 14:44:03,134 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 330 selfloop transitions, 77 changer transitions 0/409 dead transitions. [2024-06-04 14:44:03,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 409 transitions, 5465 flow [2024-06-04 14:44:03,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:44:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:44:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-04 14:44:03,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-04 14:44:03,135 INFO L175 Difference]: Start difference. First operand has 442 places, 388 transitions, 4561 flow. Second operand 11 states and 140 transitions. [2024-06-04 14:44:03,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 409 transitions, 5465 flow [2024-06-04 14:44:05,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 409 transitions, 5144 flow, removed 45 selfloop flow, removed 10 redundant places. [2024-06-04 14:44:05,137 INFO L231 Difference]: Finished difference. Result has 443 places, 389 transitions, 4428 flow [2024-06-04 14:44:05,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4240, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4428, PETRI_PLACES=443, PETRI_TRANSITIONS=389} [2024-06-04 14:44:05,139 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 411 predicate places. [2024-06-04 14:44:05,139 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 389 transitions, 4428 flow [2024-06-04 14:44:05,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:05,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:05,139 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 14:44:05,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 14:44:05,139 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 14:44:05,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:05,140 INFO L85 PathProgramCache]: Analyzing trace with hash 115802377, now seen corresponding path program 15 times [2024-06-04 14:44:05,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:05,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117130058] [2024-06-04 14:44:05,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:05,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:06,840 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 14:44:06,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:06,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117130058] [2024-06-04 14:44:06,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117130058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:06,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:06,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:44:06,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551870480] [2024-06-04 14:44:06,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:06,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:44:06,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:06,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:44:06,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:44:07,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:44:07,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 389 transitions, 4428 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:07,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:07,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:44:07,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:07,895 INFO L124 PetriNetUnfolderBase]: 1102/1978 cut-off events. [2024-06-04 14:44:07,895 INFO L125 PetriNetUnfolderBase]: For 569698/569698 co-relation queries the response was YES. [2024-06-04 14:44:07,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18537 conditions, 1978 events. 1102/1978 cut-off events. For 569698/569698 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 11548 event pairs, 137 based on Foata normal form. 2/1979 useless extension candidates. Maximal degree in co-relation 18333. Up to 1418 conditions per place. [2024-06-04 14:44:07,926 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 308 selfloop transitions, 107 changer transitions 0/417 dead transitions. [2024-06-04 14:44:07,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 417 transitions, 5713 flow [2024-06-04 14:44:07,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:44:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:44:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-04 14:44:07,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38927738927738925 [2024-06-04 14:44:07,927 INFO L175 Difference]: Start difference. First operand has 443 places, 389 transitions, 4428 flow. Second operand 13 states and 167 transitions. [2024-06-04 14:44:07,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 417 transitions, 5713 flow [2024-06-04 14:44:09,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 417 transitions, 5535 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 14:44:09,940 INFO L231 Difference]: Finished difference. Result has 447 places, 393 transitions, 4558 flow [2024-06-04 14:44:09,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4250, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4558, PETRI_PLACES=447, PETRI_TRANSITIONS=393} [2024-06-04 14:44:09,941 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 415 predicate places. [2024-06-04 14:44:09,941 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 393 transitions, 4558 flow [2024-06-04 14:44:09,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:09,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:09,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:09,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 14:44:09,941 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 14:44:09,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:09,942 INFO L85 PathProgramCache]: Analyzing trace with hash 108652537, now seen corresponding path program 16 times [2024-06-04 14:44:09,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:09,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399249861] [2024-06-04 14:44:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:09,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:11,320 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 14:44:11,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:11,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399249861] [2024-06-04 14:44:11,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399249861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:11,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:11,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:44:11,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249968479] [2024-06-04 14:44:11,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:11,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:44:11,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:11,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:44:11,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:44:11,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:44:11,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 393 transitions, 4558 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:11,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:11,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:44:11,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:12,297 INFO L124 PetriNetUnfolderBase]: 1114/1998 cut-off events. [2024-06-04 14:44:12,297 INFO L125 PetriNetUnfolderBase]: For 575716/575716 co-relation queries the response was YES. [2024-06-04 14:44:12,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18799 conditions, 1998 events. 1114/1998 cut-off events. For 575716/575716 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 11705 event pairs, 138 based on Foata normal form. 2/1999 useless extension candidates. Maximal degree in co-relation 18594. Up to 1445 conditions per place. [2024-06-04 14:44:12,323 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 311 selfloop transitions, 106 changer transitions 0/419 dead transitions. [2024-06-04 14:44:12,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 419 transitions, 5555 flow [2024-06-04 14:44:12,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:44:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:44:12,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-04 14:44:12,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-04 14:44:12,324 INFO L175 Difference]: Start difference. First operand has 447 places, 393 transitions, 4558 flow. Second operand 12 states and 159 transitions. [2024-06-04 14:44:12,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 419 transitions, 5555 flow [2024-06-04 14:44:14,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 419 transitions, 5276 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-04 14:44:14,228 INFO L231 Difference]: Finished difference. Result has 450 places, 397 transitions, 4597 flow [2024-06-04 14:44:14,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4287, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4597, PETRI_PLACES=450, PETRI_TRANSITIONS=397} [2024-06-04 14:44:14,229 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 418 predicate places. [2024-06-04 14:44:14,229 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 397 transitions, 4597 flow [2024-06-04 14:44:14,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:14,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:14,229 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 14:44:14,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 14:44:14,230 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 14:44:14,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:14,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1418470979, now seen corresponding path program 17 times [2024-06-04 14:44:14,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:14,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151375578] [2024-06-04 14:44:14,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:14,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:15,303 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 14:44:15,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:15,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151375578] [2024-06-04 14:44:15,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151375578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:15,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:15,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:44:15,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758194373] [2024-06-04 14:44:15,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:15,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:44:15,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:15,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:44:15,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:44:15,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:44:15,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 397 transitions, 4597 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:15,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:15,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:44:15,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:16,169 INFO L124 PetriNetUnfolderBase]: 1110/1992 cut-off events. [2024-06-04 14:44:16,170 INFO L125 PetriNetUnfolderBase]: For 566080/566080 co-relation queries the response was YES. [2024-06-04 14:44:16,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18366 conditions, 1992 events. 1110/1992 cut-off events. For 566080/566080 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11656 event pairs, 136 based on Foata normal form. 2/1993 useless extension candidates. Maximal degree in co-relation 18160. Up to 1411 conditions per place. [2024-06-04 14:44:16,200 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 305 selfloop transitions, 115 changer transitions 0/422 dead transitions. [2024-06-04 14:44:16,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 422 transitions, 5811 flow [2024-06-04 14:44:16,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:44:16,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:44:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 170 transitions. [2024-06-04 14:44:16,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962703962703963 [2024-06-04 14:44:16,201 INFO L175 Difference]: Start difference. First operand has 450 places, 397 transitions, 4597 flow. Second operand 13 states and 170 transitions. [2024-06-04 14:44:16,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 422 transitions, 5811 flow [2024-06-04 14:44:17,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 422 transitions, 5549 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-04 14:44:17,918 INFO L231 Difference]: Finished difference. Result has 454 places, 397 transitions, 4570 flow [2024-06-04 14:44:17,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4335, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4570, PETRI_PLACES=454, PETRI_TRANSITIONS=397} [2024-06-04 14:44:17,918 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 422 predicate places. [2024-06-04 14:44:17,919 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 397 transitions, 4570 flow [2024-06-04 14:44:17,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:17,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:17,922 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 14:44:17,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 14:44:17,922 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 14:44:17,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:17,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1610493360, now seen corresponding path program 16 times [2024-06-04 14:44:17,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:17,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651720967] [2024-06-04 14:44:17,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:17,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:18,748 INFO 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 14:44:18,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:18,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651720967] [2024-06-04 14:44:18,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651720967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:18,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:18,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:44:18,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163091543] [2024-06-04 14:44:18,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:18,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:44:18,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:18,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:44:18,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:44:18,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:44:18,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 397 transitions, 4570 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:18,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:18,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:44:18,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:19,401 INFO L124 PetriNetUnfolderBase]: 1114/2000 cut-off events. [2024-06-04 14:44:19,401 INFO L125 PetriNetUnfolderBase]: For 573694/573694 co-relation queries the response was YES. [2024-06-04 14:44:19,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18464 conditions, 2000 events. 1114/2000 cut-off events. For 573694/573694 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 11767 event pairs, 169 based on Foata normal form. 2/2001 useless extension candidates. Maximal degree in co-relation 18257. Up to 1764 conditions per place. [2024-06-04 14:44:19,431 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 339 selfloop transitions, 76 changer transitions 0/417 dead transitions. [2024-06-04 14:44:19,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 417 transitions, 5506 flow [2024-06-04 14:44:19,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:44:19,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:44:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 14:44:19,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-04 14:44:19,433 INFO L175 Difference]: Start difference. First operand has 454 places, 397 transitions, 4570 flow. Second operand 12 states and 141 transitions. [2024-06-04 14:44:19,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 417 transitions, 5506 flow [2024-06-04 14:44:21,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 417 transitions, 5051 flow, removed 47 selfloop flow, removed 14 redundant places. [2024-06-04 14:44:21,197 INFO L231 Difference]: Finished difference. Result has 452 places, 398 transitions, 4311 flow [2024-06-04 14:44:21,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4115, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4311, PETRI_PLACES=452, PETRI_TRANSITIONS=398} [2024-06-04 14:44:21,198 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 420 predicate places. [2024-06-04 14:44:21,198 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 398 transitions, 4311 flow [2024-06-04 14:44:21,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:21,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:21,198 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 14:44:21,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 14:44:21,199 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 14:44:21,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:21,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1423470571, now seen corresponding path program 13 times [2024-06-04 14:44:21,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:21,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667476342] [2024-06-04 14:44:21,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:21,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:22,315 INFO 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 14:44:22,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:22,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667476342] [2024-06-04 14:44:22,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667476342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:22,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:22,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:44:22,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570849064] [2024-06-04 14:44:22,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:22,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:44:22,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:22,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:44:22,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:44:22,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:44:22,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 398 transitions, 4311 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:22,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:22,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:44:22,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:23,158 INFO L124 PetriNetUnfolderBase]: 1118/2008 cut-off events. [2024-06-04 14:44:23,158 INFO L125 PetriNetUnfolderBase]: For 579294/579294 co-relation queries the response was YES. [2024-06-04 14:44:23,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18096 conditions, 2008 events. 1118/2008 cut-off events. For 579294/579294 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 11800 event pairs, 119 based on Foata normal form. 2/2009 useless extension candidates. Maximal degree in co-relation 17889. Up to 1640 conditions per place. [2024-06-04 14:44:23,188 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 328 selfloop transitions, 88 changer transitions 0/418 dead transitions. [2024-06-04 14:44:23,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 418 transitions, 5235 flow [2024-06-04 14:44:23,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:44:23,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:44:23,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-04 14:44:23,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-04 14:44:23,189 INFO L175 Difference]: Start difference. First operand has 452 places, 398 transitions, 4311 flow. Second operand 11 states and 137 transitions. [2024-06-04 14:44:23,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 418 transitions, 5235 flow [2024-06-04 14:44:25,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 418 transitions, 4992 flow, removed 17 selfloop flow, removed 13 redundant places. [2024-06-04 14:44:25,024 INFO L231 Difference]: Finished difference. Result has 450 places, 399 transitions, 4282 flow [2024-06-04 14:44:25,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4070, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4282, PETRI_PLACES=450, PETRI_TRANSITIONS=399} [2024-06-04 14:44:25,025 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 418 predicate places. [2024-06-04 14:44:25,025 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 399 transitions, 4282 flow [2024-06-04 14:44:25,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:25,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:25,025 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 14:44:25,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 14:44:25,026 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 14:44:25,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:25,026 INFO L85 PathProgramCache]: Analyzing trace with hash 108444992, now seen corresponding path program 17 times [2024-06-04 14:44:25,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:25,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702694419] [2024-06-04 14:44:25,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:25,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:25,994 INFO 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 14:44:25,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:25,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702694419] [2024-06-04 14:44:25,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702694419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:25,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:25,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:44:25,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745564041] [2024-06-04 14:44:25,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:25,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:44:25,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:25,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:44:25,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:44:26,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:44:26,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 399 transitions, 4282 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:26,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:26,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:44:26,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:26,611 INFO L124 PetriNetUnfolderBase]: 1115/2003 cut-off events. [2024-06-04 14:44:26,612 INFO L125 PetriNetUnfolderBase]: For 556996/556996 co-relation queries the response was YES. [2024-06-04 14:44:26,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17747 conditions, 2003 events. 1115/2003 cut-off events. For 556996/556996 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 11780 event pairs, 175 based on Foata normal form. 2/2004 useless extension candidates. Maximal degree in co-relation 17539. Up to 1767 conditions per place. [2024-06-04 14:44:26,642 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 346 selfloop transitions, 70 changer transitions 0/418 dead transitions. [2024-06-04 14:44:26,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 418 transitions, 5190 flow [2024-06-04 14:44:26,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:44:26,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:44:26,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-04 14:44:26,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:44:26,643 INFO L175 Difference]: Start difference. First operand has 450 places, 399 transitions, 4282 flow. Second operand 12 states and 144 transitions. [2024-06-04 14:44:26,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 418 transitions, 5190 flow [2024-06-04 14:44:28,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 418 transitions, 4954 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-04 14:44:28,451 INFO L231 Difference]: Finished difference. Result has 451 places, 399 transitions, 4198 flow [2024-06-04 14:44:28,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4054, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4198, PETRI_PLACES=451, PETRI_TRANSITIONS=399} [2024-06-04 14:44:28,452 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 419 predicate places. [2024-06-04 14:44:28,452 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 399 transitions, 4198 flow [2024-06-04 14:44:28,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:28,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:28,452 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 14:44:28,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 14:44:28,452 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 14:44:28,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:28,453 INFO L85 PathProgramCache]: Analyzing trace with hash 108450727, now seen corresponding path program 18 times [2024-06-04 14:44:28,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:28,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514227650] [2024-06-04 14:44:28,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:28,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:29,323 INFO 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 14:44:29,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:29,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514227650] [2024-06-04 14:44:29,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514227650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:29,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:29,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:44:29,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536135759] [2024-06-04 14:44:29,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:29,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:44:29,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:29,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:44:29,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:44:29,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:44:29,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 399 transitions, 4198 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:29,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:29,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:44:29,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:30,045 INFO L124 PetriNetUnfolderBase]: 1111/1997 cut-off events. [2024-06-04 14:44:30,046 INFO L125 PetriNetUnfolderBase]: For 543763/543763 co-relation queries the response was YES. [2024-06-04 14:44:30,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17284 conditions, 1997 events. 1111/1997 cut-off events. For 543763/543763 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 11765 event pairs, 134 based on Foata normal form. 2/1998 useless extension candidates. Maximal degree in co-relation 17076. Up to 1444 conditions per place. [2024-06-04 14:44:30,075 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 312 selfloop transitions, 107 changer transitions 0/421 dead transitions. [2024-06-04 14:44:30,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 421 transitions, 5102 flow [2024-06-04 14:44:30,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:44:30,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:44:30,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-04 14:44:30,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-04 14:44:30,076 INFO L175 Difference]: Start difference. First operand has 451 places, 399 transitions, 4198 flow. Second operand 12 states and 158 transitions. [2024-06-04 14:44:30,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 421 transitions, 5102 flow [2024-06-04 14:44:31,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 421 transitions, 4853 flow, removed 43 selfloop flow, removed 11 redundant places. [2024-06-04 14:44:31,890 INFO L231 Difference]: Finished difference. Result has 452 places, 399 transitions, 4168 flow [2024-06-04 14:44:31,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3949, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4168, PETRI_PLACES=452, PETRI_TRANSITIONS=399} [2024-06-04 14:44:31,891 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 420 predicate places. [2024-06-04 14:44:31,891 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 399 transitions, 4168 flow [2024-06-04 14:44:31,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:31,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:31,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:44:31,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-04 14:44:31,892 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 14:44:31,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:31,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1423479871, now seen corresponding path program 14 times [2024-06-04 14:44:31,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:31,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258443568] [2024-06-04 14:44:31,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:31,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:32,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:32,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258443568] [2024-06-04 14:44:32,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258443568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:32,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:32,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:44:32,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332086845] [2024-06-04 14:44:32,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:32,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:44:32,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:32,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:44:32,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:44:33,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:44:33,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 399 transitions, 4168 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:33,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:33,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:44:33,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:33,745 INFO L124 PetriNetUnfolderBase]: 1115/2005 cut-off events. [2024-06-04 14:44:33,745 INFO L125 PetriNetUnfolderBase]: For 552110/552110 co-relation queries the response was YES. [2024-06-04 14:44:33,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17311 conditions, 2005 events. 1115/2005 cut-off events. For 552110/552110 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 11825 event pairs, 117 based on Foata normal form. 2/2006 useless extension candidates. Maximal degree in co-relation 17102. Up to 1623 conditions per place. [2024-06-04 14:44:33,775 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 328 selfloop transitions, 89 changer transitions 0/419 dead transitions. [2024-06-04 14:44:33,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 419 transitions, 5092 flow [2024-06-04 14:44:33,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:44:33,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:44:33,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 14:44:33,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-04 14:44:33,776 INFO L175 Difference]: Start difference. First operand has 452 places, 399 transitions, 4168 flow. Second operand 11 states and 138 transitions. [2024-06-04 14:44:33,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 419 transitions, 5092 flow [2024-06-04 14:44:35,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 419 transitions, 4871 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:44:35,668 INFO L231 Difference]: Finished difference. Result has 452 places, 400 transitions, 4163 flow [2024-06-04 14:44:35,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3947, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4163, PETRI_PLACES=452, PETRI_TRANSITIONS=400} [2024-06-04 14:44:35,668 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 420 predicate places. [2024-06-04 14:44:35,669 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 400 transitions, 4163 flow [2024-06-04 14:44:35,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:35,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:35,669 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 14:44:35,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-04 14:44:35,669 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 14:44:35,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:35,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1344254169, now seen corresponding path program 15 times [2024-06-04 14:44:35,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:35,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789503914] [2024-06-04 14:44:35,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:35,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:36,834 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 14:44:36,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:36,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789503914] [2024-06-04 14:44:36,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789503914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:36,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:36,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:44:36,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130641207] [2024-06-04 14:44:36,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:36,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:44:36,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:36,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:44:36,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:44:36,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:44:36,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 400 transitions, 4163 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:36,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:36,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:44:36,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:37,558 INFO L124 PetriNetUnfolderBase]: 1119/2013 cut-off events. [2024-06-04 14:44:37,558 INFO L125 PetriNetUnfolderBase]: For 559831/559831 co-relation queries the response was YES. [2024-06-04 14:44:37,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17406 conditions, 2013 events. 1119/2013 cut-off events. For 559831/559831 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 11877 event pairs, 118 based on Foata normal form. 2/2014 useless extension candidates. Maximal degree in co-relation 17196. Up to 1538 conditions per place. [2024-06-04 14:44:37,584 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 321 selfloop transitions, 97 changer transitions 0/420 dead transitions. [2024-06-04 14:44:37,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 420 transitions, 5089 flow [2024-06-04 14:44:37,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:44:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:44:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-04 14:44:37,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-04 14:44:37,585 INFO L175 Difference]: Start difference. First operand has 452 places, 400 transitions, 4163 flow. Second operand 11 states and 136 transitions. [2024-06-04 14:44:37,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 420 transitions, 5089 flow [2024-06-04 14:44:39,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 420 transitions, 4883 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 14:44:39,301 INFO L231 Difference]: Finished difference. Result has 454 places, 401 transitions, 4191 flow [2024-06-04 14:44:39,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3957, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4191, PETRI_PLACES=454, PETRI_TRANSITIONS=401} [2024-06-04 14:44:39,302 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 422 predicate places. [2024-06-04 14:44:39,302 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 401 transitions, 4191 flow [2024-06-04 14:44:39,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:39,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:39,302 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 14:44:39,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-04 14:44:39,303 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 14:44:39,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:39,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1081140971, now seen corresponding path program 16 times [2024-06-04 14:44:39,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:39,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258554595] [2024-06-04 14:44:39,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:39,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:40,436 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 14:44:40,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:40,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258554595] [2024-06-04 14:44:40,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258554595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:40,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:40,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:44:40,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562010216] [2024-06-04 14:44:40,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:40,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:44:40,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:40,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:44:40,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:44:40,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:44:40,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 401 transitions, 4191 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:40,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:40,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:44:40,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:41,157 INFO L124 PetriNetUnfolderBase]: 1129/2031 cut-off events. [2024-06-04 14:44:41,157 INFO L125 PetriNetUnfolderBase]: For 567344/567344 co-relation queries the response was YES. [2024-06-04 14:44:41,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17593 conditions, 2031 events. 1129/2031 cut-off events. For 567344/567344 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 12006 event pairs, 174 based on Foata normal form. 2/2032 useless extension candidates. Maximal degree in co-relation 17382. Up to 1877 conditions per place. [2024-06-04 14:44:41,187 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 385 selfloop transitions, 36 changer transitions 0/423 dead transitions. [2024-06-04 14:44:41,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 423 transitions, 5169 flow [2024-06-04 14:44:41,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:44:41,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:44:41,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 14:44:41,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-04 14:44:41,189 INFO L175 Difference]: Start difference. First operand has 454 places, 401 transitions, 4191 flow. Second operand 11 states and 131 transitions. [2024-06-04 14:44:41,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 423 transitions, 5169 flow [2024-06-04 14:44:43,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 423 transitions, 4941 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-04 14:44:43,187 INFO L231 Difference]: Finished difference. Result has 457 places, 405 transitions, 4121 flow [2024-06-04 14:44:43,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4121, PETRI_PLACES=457, PETRI_TRANSITIONS=405} [2024-06-04 14:44:43,187 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 425 predicate places. [2024-06-04 14:44:43,188 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 405 transitions, 4121 flow [2024-06-04 14:44:43,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:43,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:43,188 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 14:44:43,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-04 14:44:43,188 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 14:44:43,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:43,188 INFO L85 PathProgramCache]: Analyzing trace with hash 152711053, now seen corresponding path program 17 times [2024-06-04 14:44:43,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:43,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686043730] [2024-06-04 14:44:43,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:43,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:44,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:44,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686043730] [2024-06-04 14:44:44,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686043730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:44,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:44,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:44:44,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679425609] [2024-06-04 14:44:44,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:44,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:44:44,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:44,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:44:44,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:44:44,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:44:44,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 405 transitions, 4121 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:44,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:44,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:44:44,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:45,252 INFO L124 PetriNetUnfolderBase]: 1139/2049 cut-off events. [2024-06-04 14:44:45,252 INFO L125 PetriNetUnfolderBase]: For 574416/574416 co-relation queries the response was YES. [2024-06-04 14:44:45,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17593 conditions, 2049 events. 1139/2049 cut-off events. For 574416/574416 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 12164 event pairs, 182 based on Foata normal form. 2/2050 useless extension candidates. Maximal degree in co-relation 17380. Up to 1978 conditions per place. [2024-06-04 14:44:45,283 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 399 selfloop transitions, 23 changer transitions 0/424 dead transitions. [2024-06-04 14:44:45,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 424 transitions, 5087 flow [2024-06-04 14:44:45,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:44:45,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:44:45,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:44:45,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:44:45,284 INFO L175 Difference]: Start difference. First operand has 457 places, 405 transitions, 4121 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:44:45,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 424 transitions, 5087 flow [2024-06-04 14:44:47,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 424 transitions, 4979 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 14:44:47,467 INFO L231 Difference]: Finished difference. Result has 461 places, 410 transitions, 4158 flow [2024-06-04 14:44:47,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4019, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4158, PETRI_PLACES=461, PETRI_TRANSITIONS=410} [2024-06-04 14:44:47,467 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 429 predicate places. [2024-06-04 14:44:47,467 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 410 transitions, 4158 flow [2024-06-04 14:44:47,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:47,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:47,468 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 14:44:47,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-04 14:44:47,468 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 14:44:47,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:47,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1290243093, now seen corresponding path program 18 times [2024-06-04 14:44:47,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:47,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366468765] [2024-06-04 14:44:47,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:47,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:48,511 INFO 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 14:44:48,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:48,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366468765] [2024-06-04 14:44:48,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366468765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:48,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:48,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:44:48,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772421696] [2024-06-04 14:44:48,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:48,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:44:48,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:48,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:44:48,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:44:48,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:44:48,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 410 transitions, 4158 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:48,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:48,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:44:48,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:49,399 INFO L124 PetriNetUnfolderBase]: 1149/2067 cut-off events. [2024-06-04 14:44:49,400 INFO L125 PetriNetUnfolderBase]: For 581354/581354 co-relation queries the response was YES. [2024-06-04 14:44:49,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17715 conditions, 2067 events. 1149/2067 cut-off events. For 581354/581354 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 12276 event pairs, 177 based on Foata normal form. 2/2068 useless extension candidates. Maximal degree in co-relation 17500. Up to 1905 conditions per place. [2024-06-04 14:44:49,425 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 385 selfloop transitions, 45 changer transitions 0/432 dead transitions. [2024-06-04 14:44:49,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 432 transitions, 5161 flow [2024-06-04 14:44:49,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:44:49,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:44:49,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 14:44:49,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-04 14:44:49,426 INFO L175 Difference]: Start difference. First operand has 461 places, 410 transitions, 4158 flow. Second operand 11 states and 129 transitions. [2024-06-04 14:44:49,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 432 transitions, 5161 flow [2024-06-04 14:44:51,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 432 transitions, 5095 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:51,698 INFO L231 Difference]: Finished difference. Result has 467 places, 417 transitions, 4304 flow [2024-06-04 14:44:51,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4092, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4304, PETRI_PLACES=467, PETRI_TRANSITIONS=417} [2024-06-04 14:44:51,699 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 435 predicate places. [2024-06-04 14:44:51,699 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 417 transitions, 4304 flow [2024-06-04 14:44:51,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:51,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:51,699 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 14:44:51,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-04 14:44:51,700 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 14:44:51,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:51,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1579433767, now seen corresponding path program 19 times [2024-06-04 14:44:51,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:51,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955334113] [2024-06-04 14:44:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:51,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:44:52,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:52,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955334113] [2024-06-04 14:44:52,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955334113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:52,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:52,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:44:52,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597763570] [2024-06-04 14:44:52,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:52,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:44:52,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:52,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:44:52,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:44:53,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:44:53,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 417 transitions, 4304 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:53,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:53,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:44:53,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:53,668 INFO L124 PetriNetUnfolderBase]: 1153/2075 cut-off events. [2024-06-04 14:44:53,668 INFO L125 PetriNetUnfolderBase]: For 588806/588806 co-relation queries the response was YES. [2024-06-04 14:44:53,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17891 conditions, 2075 events. 1153/2075 cut-off events. For 588806/588806 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 12351 event pairs, 181 based on Foata normal form. 2/2076 useless extension candidates. Maximal degree in co-relation 17674. Up to 2021 conditions per place. [2024-06-04 14:44:53,699 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 414 selfloop transitions, 16 changer transitions 0/432 dead transitions. [2024-06-04 14:44:53,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 432 transitions, 5236 flow [2024-06-04 14:44:53,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:44:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:44:53,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 14:44:53,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31955922865013775 [2024-06-04 14:44:53,700 INFO L175 Difference]: Start difference. First operand has 467 places, 417 transitions, 4304 flow. Second operand 11 states and 116 transitions. [2024-06-04 14:44:53,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 432 transitions, 5236 flow [2024-06-04 14:44:55,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 432 transitions, 5139 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-04 14:44:55,938 INFO L231 Difference]: Finished difference. Result has 472 places, 418 transitions, 4287 flow [2024-06-04 14:44:55,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4207, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4287, PETRI_PLACES=472, PETRI_TRANSITIONS=418} [2024-06-04 14:44:55,938 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 440 predicate places. [2024-06-04 14:44:55,939 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 418 transitions, 4287 flow [2024-06-04 14:44:55,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:55,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:44:55,939 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 14:44:55,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-04 14:44:55,939 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 14:44:55,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:44:55,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1208535817, now seen corresponding path program 20 times [2024-06-04 14:44:55,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:44:55,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756384076] [2024-06-04 14:44:55,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:44:55,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:44:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:44:57,040 INFO 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 14:44:57,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:44:57,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756384076] [2024-06-04 14:44:57,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756384076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:44:57,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:44:57,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:44:57,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017302277] [2024-06-04 14:44:57,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:44:57,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:44:57,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:44:57,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:44:57,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:44:57,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:44:57,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 418 transitions, 4287 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:44:57,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:44:57,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:44:57,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:44:57,830 INFO L124 PetriNetUnfolderBase]: 1164/2096 cut-off events. [2024-06-04 14:44:57,830 INFO L125 PetriNetUnfolderBase]: For 623341/623341 co-relation queries the response was YES. [2024-06-04 14:44:57,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18392 conditions, 2096 events. 1164/2096 cut-off events. For 623341/623341 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 12547 event pairs, 185 based on Foata normal form. 2/2097 useless extension candidates. Maximal degree in co-relation 18174. Up to 1986 conditions per place. [2024-06-04 14:44:57,862 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 409 selfloop transitions, 24 changer transitions 0/435 dead transitions. [2024-06-04 14:44:57,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 435 transitions, 5597 flow [2024-06-04 14:44:57,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:44:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:44:57,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:44:57,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:44:57,863 INFO L175 Difference]: Start difference. First operand has 472 places, 418 transitions, 4287 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:44:57,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 435 transitions, 5597 flow [2024-06-04 14:45:00,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 435 transitions, 5527 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 14:45:00,056 INFO L231 Difference]: Finished difference. Result has 474 places, 420 transitions, 4359 flow [2024-06-04 14:45:00,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4217, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4359, PETRI_PLACES=474, PETRI_TRANSITIONS=420} [2024-06-04 14:45:00,057 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 442 predicate places. [2024-06-04 14:45:00,057 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 420 transitions, 4359 flow [2024-06-04 14:45:00,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:00,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:00,058 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 14:45:00,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-04 14:45:00,058 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 14:45:00,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:00,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1938444701, now seen corresponding path program 21 times [2024-06-04 14:45:00,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:00,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636636777] [2024-06-04 14:45:00,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:00,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:01,219 INFO 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 14:45:01,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:01,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636636777] [2024-06-04 14:45:01,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636636777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:01,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:01,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:45:01,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634125498] [2024-06-04 14:45:01,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:01,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:45:01,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:01,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:45:01,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:45:01,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:45:01,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 420 transitions, 4359 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:01,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:01,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:45:01,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:01,942 INFO L124 PetriNetUnfolderBase]: 1168/2104 cut-off events. [2024-06-04 14:45:01,942 INFO L125 PetriNetUnfolderBase]: For 631396/631396 co-relation queries the response was YES. [2024-06-04 14:45:01,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18497 conditions, 2104 events. 1168/2104 cut-off events. For 631396/631396 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 12567 event pairs, 181 based on Foata normal form. 2/2105 useless extension candidates. Maximal degree in co-relation 18278. Up to 1917 conditions per place. [2024-06-04 14:45:01,975 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 387 selfloop transitions, 48 changer transitions 0/437 dead transitions. [2024-06-04 14:45:01,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 437 transitions, 5319 flow [2024-06-04 14:45:01,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:01,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:01,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 14:45:01,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-04 14:45:01,977 INFO L175 Difference]: Start difference. First operand has 474 places, 420 transitions, 4359 flow. Second operand 11 states and 133 transitions. [2024-06-04 14:45:01,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 437 transitions, 5319 flow [2024-06-04 14:45:04,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 437 transitions, 5233 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 14:45:04,391 INFO L231 Difference]: Finished difference. Result has 477 places, 421 transitions, 4421 flow [2024-06-04 14:45:04,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4275, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4421, PETRI_PLACES=477, PETRI_TRANSITIONS=421} [2024-06-04 14:45:04,391 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 445 predicate places. [2024-06-04 14:45:04,391 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 421 transitions, 4421 flow [2024-06-04 14:45:04,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:04,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:04,392 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 14:45:04,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-04 14:45:04,392 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 14:45:04,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:04,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1930819910, now seen corresponding path program 18 times [2024-06-04 14:45:04,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:04,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538013061] [2024-06-04 14:45:04,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:04,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:05,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:05,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:05,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538013061] [2024-06-04 14:45:05,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538013061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:05,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:05,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:45:05,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275451932] [2024-06-04 14:45:05,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:05,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:45:05,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:05,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:45:05,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:45:05,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:45:05,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 421 transitions, 4421 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:05,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:05,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:45:05,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:06,137 INFO L124 PetriNetUnfolderBase]: 1172/2112 cut-off events. [2024-06-04 14:45:06,138 INFO L125 PetriNetUnfolderBase]: For 638694/638694 co-relation queries the response was YES. [2024-06-04 14:45:06,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18625 conditions, 2112 events. 1172/2112 cut-off events. For 638694/638694 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 12651 event pairs, 193 based on Foata normal form. 2/2113 useless extension candidates. Maximal degree in co-relation 18405. Up to 2031 conditions per place. [2024-06-04 14:45:06,170 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 399 selfloop transitions, 35 changer transitions 0/436 dead transitions. [2024-06-04 14:45:06,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 436 transitions, 5387 flow [2024-06-04 14:45:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:45:06,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:45:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-04 14:45:06,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33585858585858586 [2024-06-04 14:45:06,171 INFO L175 Difference]: Start difference. First operand has 477 places, 421 transitions, 4421 flow. Second operand 12 states and 133 transitions. [2024-06-04 14:45:06,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 436 transitions, 5387 flow [2024-06-04 14:45:08,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 436 transitions, 5262 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-04 14:45:08,343 INFO L231 Difference]: Finished difference. Result has 482 places, 424 transitions, 4444 flow [2024-06-04 14:45:08,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4296, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4444, PETRI_PLACES=482, PETRI_TRANSITIONS=424} [2024-06-04 14:45:08,343 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 450 predicate places. [2024-06-04 14:45:08,343 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 424 transitions, 4444 flow [2024-06-04 14:45:08,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:08,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:08,344 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 14:45:08,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-04 14:45:08,344 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 14:45:08,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:08,344 INFO L85 PathProgramCache]: Analyzing trace with hash 146444027, now seen corresponding path program 22 times [2024-06-04 14:45:08,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:08,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216799422] [2024-06-04 14:45:08,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:08,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:09,482 INFO 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 14:45:09,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:09,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216799422] [2024-06-04 14:45:09,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216799422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:09,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:09,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:45:09,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826940826] [2024-06-04 14:45:09,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:09,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:45:09,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:09,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:45:09,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:45:09,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:45:09,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 424 transitions, 4444 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:09,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:09,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:45:09,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:10,244 INFO L124 PetriNetUnfolderBase]: 1176/2120 cut-off events. [2024-06-04 14:45:10,244 INFO L125 PetriNetUnfolderBase]: For 646605/646605 co-relation queries the response was YES. [2024-06-04 14:45:10,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18674 conditions, 2120 events. 1176/2120 cut-off events. For 646605/646605 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 12731 event pairs, 181 based on Foata normal form. 2/2121 useless extension candidates. Maximal degree in co-relation 18453. Up to 1938 conditions per place. [2024-06-04 14:45:10,277 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 394 selfloop transitions, 45 changer transitions 0/441 dead transitions. [2024-06-04 14:45:10,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 441 transitions, 5410 flow [2024-06-04 14:45:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 14:45:10,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 14:45:10,278 INFO L175 Difference]: Start difference. First operand has 482 places, 424 transitions, 4444 flow. Second operand 11 states and 132 transitions. [2024-06-04 14:45:10,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 441 transitions, 5410 flow [2024-06-04 14:45:12,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 441 transitions, 5254 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:12,718 INFO L231 Difference]: Finished difference. Result has 483 places, 425 transitions, 4430 flow [2024-06-04 14:45:12,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4288, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4430, PETRI_PLACES=483, PETRI_TRANSITIONS=425} [2024-06-04 14:45:12,718 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 451 predicate places. [2024-06-04 14:45:12,719 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 425 transitions, 4430 flow [2024-06-04 14:45:12,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:12,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:12,719 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 14:45:12,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-04 14:45:12,719 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 14:45:12,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:12,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1865373079, now seen corresponding path program 23 times [2024-06-04 14:45:12,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:12,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406698535] [2024-06-04 14:45:12,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:12,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:13,851 INFO 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 14:45:13,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:13,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406698535] [2024-06-04 14:45:13,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406698535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:13,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:13,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:45:13,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341483744] [2024-06-04 14:45:13,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:13,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:45:13,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:13,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:45:13,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:45:13,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:45:13,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 425 transitions, 4430 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:13,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:13,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:45:13,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:14,629 INFO L124 PetriNetUnfolderBase]: 1186/2138 cut-off events. [2024-06-04 14:45:14,629 INFO L125 PetriNetUnfolderBase]: For 654484/654484 co-relation queries the response was YES. [2024-06-04 14:45:14,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18807 conditions, 2138 events. 1186/2138 cut-off events. For 654484/654484 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 12868 event pairs, 175 based on Foata normal form. 2/2139 useless extension candidates. Maximal degree in co-relation 18586. Up to 1947 conditions per place. [2024-06-04 14:45:14,662 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 388 selfloop transitions, 53 changer transitions 0/443 dead transitions. [2024-06-04 14:45:14,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 443 transitions, 5428 flow [2024-06-04 14:45:14,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:14,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:14,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 14:45:14,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-04 14:45:14,663 INFO L175 Difference]: Start difference. First operand has 483 places, 425 transitions, 4430 flow. Second operand 11 states and 129 transitions. [2024-06-04 14:45:14,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 443 transitions, 5428 flow [2024-06-04 14:45:17,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 443 transitions, 5292 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-04 14:45:17,018 INFO L231 Difference]: Finished difference. Result has 485 places, 428 transitions, 4482 flow [2024-06-04 14:45:17,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4298, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4482, PETRI_PLACES=485, PETRI_TRANSITIONS=428} [2024-06-04 14:45:17,018 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 453 predicate places. [2024-06-04 14:45:17,018 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 428 transitions, 4482 flow [2024-06-04 14:45:17,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:17,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:17,019 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 14:45:17,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-04 14:45:17,019 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 14:45:17,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:17,019 INFO L85 PathProgramCache]: Analyzing trace with hash 138810091, now seen corresponding path program 19 times [2024-06-04 14:45:17,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:17,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33875072] [2024-06-04 14:45:17,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:17,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:18,202 INFO 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 14:45:18,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:18,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33875072] [2024-06-04 14:45:18,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33875072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:18,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:18,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:45:18,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276578874] [2024-06-04 14:45:18,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:18,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:45:18,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:18,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:45:18,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:45:18,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:45:18,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 428 transitions, 4482 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:18,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:18,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:45:18,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:19,152 INFO L124 PetriNetUnfolderBase]: 1198/2158 cut-off events. [2024-06-04 14:45:19,153 INFO L125 PetriNetUnfolderBase]: For 663567/663567 co-relation queries the response was YES. [2024-06-04 14:45:19,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19040 conditions, 2158 events. 1198/2158 cut-off events. For 663567/663567 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13020 event pairs, 177 based on Foata normal form. 2/2159 useless extension candidates. Maximal degree in co-relation 18818. Up to 1893 conditions per place. [2024-06-04 14:45:19,185 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 388 selfloop transitions, 62 changer transitions 0/452 dead transitions. [2024-06-04 14:45:19,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 452 transitions, 5569 flow [2024-06-04 14:45:19,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:45:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:45:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 163 transitions. [2024-06-04 14:45:19,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3528138528138528 [2024-06-04 14:45:19,186 INFO L175 Difference]: Start difference. First operand has 485 places, 428 transitions, 4482 flow. Second operand 14 states and 163 transitions. [2024-06-04 14:45:19,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 452 transitions, 5569 flow [2024-06-04 14:45:21,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 452 transitions, 5406 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-04 14:45:21,572 INFO L231 Difference]: Finished difference. Result has 491 places, 432 transitions, 4581 flow [2024-06-04 14:45:21,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4319, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4581, PETRI_PLACES=491, PETRI_TRANSITIONS=432} [2024-06-04 14:45:21,573 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 459 predicate places. [2024-06-04 14:45:21,573 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 432 transitions, 4581 flow [2024-06-04 14:45:21,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:21,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:21,574 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 14:45:21,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-04 14:45:21,574 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 14:45:21,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:21,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1658446653, now seen corresponding path program 20 times [2024-06-04 14:45:21,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:21,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547051701] [2024-06-04 14:45:21,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:21,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:22,967 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 14:45:22,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:22,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547051701] [2024-06-04 14:45:22,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547051701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:22,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:22,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:45:22,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020001565] [2024-06-04 14:45:22,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:22,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:45:22,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:22,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:45:22,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:45:23,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:45:23,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 432 transitions, 4581 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:23,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:23,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:45:23,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:23,959 INFO L124 PetriNetUnfolderBase]: 1207/2173 cut-off events. [2024-06-04 14:45:23,959 INFO L125 PetriNetUnfolderBase]: For 672022/672022 co-relation queries the response was YES. [2024-06-04 14:45:23,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19261 conditions, 2173 events. 1207/2173 cut-off events. For 672022/672022 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 13142 event pairs, 167 based on Foata normal form. 2/2174 useless extension candidates. Maximal degree in co-relation 19038. Up to 1912 conditions per place. [2024-06-04 14:45:23,987 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 378 selfloop transitions, 76 changer transitions 0/456 dead transitions. [2024-06-04 14:45:23,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 456 transitions, 5679 flow [2024-06-04 14:45:23,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:45:23,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:45:23,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-04 14:45:23,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351981351981352 [2024-06-04 14:45:23,989 INFO L175 Difference]: Start difference. First operand has 491 places, 432 transitions, 4581 flow. Second operand 13 states and 151 transitions. [2024-06-04 14:45:23,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 456 transitions, 5679 flow [2024-06-04 14:45:26,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 456 transitions, 5460 flow, removed 50 selfloop flow, removed 11 redundant places. [2024-06-04 14:45:26,378 INFO L231 Difference]: Finished difference. Result has 495 places, 437 transitions, 4674 flow [2024-06-04 14:45:26,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4362, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4674, PETRI_PLACES=495, PETRI_TRANSITIONS=437} [2024-06-04 14:45:26,378 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 463 predicate places. [2024-06-04 14:45:26,378 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 437 transitions, 4674 flow [2024-06-04 14:45:26,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:26,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:26,379 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 14:45:26,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-04 14:45:26,379 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 14:45:26,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:26,379 INFO L85 PathProgramCache]: Analyzing trace with hash 404731997, now seen corresponding path program 24 times [2024-06-04 14:45:26,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:26,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420054206] [2024-06-04 14:45:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:26,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:27,357 INFO 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 14:45:27,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:27,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420054206] [2024-06-04 14:45:27,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420054206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:27,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:27,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:45:27,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939509946] [2024-06-04 14:45:27,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:27,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:45:27,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:27,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:45:27,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:45:27,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:45:27,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 437 transitions, 4674 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:27,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:27,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:45:27,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:28,184 INFO L124 PetriNetUnfolderBase]: 1211/2181 cut-off events. [2024-06-04 14:45:28,185 INFO L125 PetriNetUnfolderBase]: For 679287/679287 co-relation queries the response was YES. [2024-06-04 14:45:28,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19394 conditions, 2181 events. 1211/2181 cut-off events. For 679287/679287 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 13184 event pairs, 185 based on Foata normal form. 2/2182 useless extension candidates. Maximal degree in co-relation 19168. Up to 2001 conditions per place. [2024-06-04 14:45:28,218 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 403 selfloop transitions, 48 changer transitions 0/453 dead transitions. [2024-06-04 14:45:28,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 453 transitions, 5664 flow [2024-06-04 14:45:28,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:28,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:28,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 14:45:28,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-04 14:45:28,220 INFO L175 Difference]: Start difference. First operand has 495 places, 437 transitions, 4674 flow. Second operand 11 states and 130 transitions. [2024-06-04 14:45:28,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 453 transitions, 5664 flow [2024-06-04 14:45:30,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 453 transitions, 5417 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-04 14:45:30,763 INFO L231 Difference]: Finished difference. Result has 497 places, 438 transitions, 4579 flow [2024-06-04 14:45:30,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4427, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4579, PETRI_PLACES=497, PETRI_TRANSITIONS=438} [2024-06-04 14:45:30,764 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 465 predicate places. [2024-06-04 14:45:30,764 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 438 transitions, 4579 flow [2024-06-04 14:45:30,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:30,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:30,764 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 14:45:30,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-04 14:45:30,764 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 14:45:30,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:30,764 INFO L85 PathProgramCache]: Analyzing trace with hash -30941431, now seen corresponding path program 25 times [2024-06-04 14:45:30,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:30,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153259875] [2024-06-04 14:45:30,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:30,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:32,037 INFO 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 14:45:32,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:32,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153259875] [2024-06-04 14:45:32,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153259875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:32,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:32,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:45:32,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290412681] [2024-06-04 14:45:32,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:32,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:45:32,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:32,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:45:32,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:45:32,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:45:32,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 438 transitions, 4579 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:32,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:32,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:45:32,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:32,935 INFO L124 PetriNetUnfolderBase]: 1215/2189 cut-off events. [2024-06-04 14:45:32,935 INFO L125 PetriNetUnfolderBase]: For 686412/686412 co-relation queries the response was YES. [2024-06-04 14:45:32,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19341 conditions, 2189 events. 1215/2189 cut-off events. For 686412/686412 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 13256 event pairs, 179 based on Foata normal form. 2/2190 useless extension candidates. Maximal degree in co-relation 19114. Up to 2023 conditions per place. [2024-06-04 14:45:32,971 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 400 selfloop transitions, 53 changer transitions 0/455 dead transitions. [2024-06-04 14:45:32,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 455 transitions, 5592 flow [2024-06-04 14:45:32,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:32,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:45:32,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-04 14:45:32,972 INFO L175 Difference]: Start difference. First operand has 497 places, 438 transitions, 4579 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:45:32,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 455 transitions, 5592 flow [2024-06-04 14:45:35,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 455 transitions, 5448 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-04 14:45:35,602 INFO L231 Difference]: Finished difference. Result has 500 places, 440 transitions, 4619 flow [2024-06-04 14:45:35,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4437, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4619, PETRI_PLACES=500, PETRI_TRANSITIONS=440} [2024-06-04 14:45:35,603 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 468 predicate places. [2024-06-04 14:45:35,603 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 440 transitions, 4619 flow [2024-06-04 14:45:35,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:35,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:35,603 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 14:45:35,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-04 14:45:35,603 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 14:45:35,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:35,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1411806997, now seen corresponding path program 26 times [2024-06-04 14:45:35,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:35,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543811652] [2024-06-04 14:45:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:35,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:36,931 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 14:45:36,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:36,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543811652] [2024-06-04 14:45:36,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543811652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:36,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:36,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:45:36,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858203385] [2024-06-04 14:45:36,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:36,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:45:36,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:36,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:45:36,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:45:37,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:45:37,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 440 transitions, 4619 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:37,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:37,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:45:37,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:37,847 INFO L124 PetriNetUnfolderBase]: 1226/2210 cut-off events. [2024-06-04 14:45:37,847 INFO L125 PetriNetUnfolderBase]: For 724817/724817 co-relation queries the response was YES. [2024-06-04 14:45:37,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19971 conditions, 2210 events. 1226/2210 cut-off events. For 724817/724817 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 13427 event pairs, 192 based on Foata normal form. 2/2211 useless extension candidates. Maximal degree in co-relation 19742. Up to 1951 conditions per place. [2024-06-04 14:45:37,885 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 400 selfloop transitions, 56 changer transitions 0/458 dead transitions. [2024-06-04 14:45:37,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 458 transitions, 6017 flow [2024-06-04 14:45:37,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:37,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:37,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 14:45:37,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-04 14:45:37,886 INFO L175 Difference]: Start difference. First operand has 500 places, 440 transitions, 4619 flow. Second operand 11 states and 130 transitions. [2024-06-04 14:45:37,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 458 transitions, 6017 flow [2024-06-04 14:45:40,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 458 transitions, 5865 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-04 14:45:40,840 INFO L231 Difference]: Finished difference. Result has 503 places, 442 transitions, 4693 flow [2024-06-04 14:45:40,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4467, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4693, PETRI_PLACES=503, PETRI_TRANSITIONS=442} [2024-06-04 14:45:40,840 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 471 predicate places. [2024-06-04 14:45:40,841 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 442 transitions, 4693 flow [2024-06-04 14:45:40,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:40,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:40,841 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 14:45:40,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-04 14:45:40,841 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 14:45:40,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:40,841 INFO L85 PathProgramCache]: Analyzing trace with hash -839148444, now seen corresponding path program 19 times [2024-06-04 14:45:40,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:40,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021871157] [2024-06-04 14:45:40,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:40,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:41,875 INFO 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 14:45:41,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:41,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021871157] [2024-06-04 14:45:41,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021871157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:41,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:41,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:45:41,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66751466] [2024-06-04 14:45:41,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:41,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:45:41,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:41,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:45:41,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:45:42,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:45:42,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 442 transitions, 4693 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:42,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:42,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:45:42,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:42,801 INFO L124 PetriNetUnfolderBase]: 1250/2262 cut-off events. [2024-06-04 14:45:42,801 INFO L125 PetriNetUnfolderBase]: For 904891/904891 co-relation queries the response was YES. [2024-06-04 14:45:42,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20368 conditions, 2262 events. 1250/2262 cut-off events. For 904891/904891 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13817 event pairs, 177 based on Foata normal form. 14/2275 useless extension candidates. Maximal degree in co-relation 20138. Up to 1949 conditions per place. [2024-06-04 14:45:42,839 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 393 selfloop transitions, 59 changer transitions 13/467 dead transitions. [2024-06-04 14:45:42,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 467 transitions, 5857 flow [2024-06-04 14:45:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:45:42,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:45:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-04 14:45:42,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-04 14:45:42,840 INFO L175 Difference]: Start difference. First operand has 503 places, 442 transitions, 4693 flow. Second operand 12 states and 148 transitions. [2024-06-04 14:45:42,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 467 transitions, 5857 flow [2024-06-04 14:45:45,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 467 transitions, 5739 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-04 14:45:45,981 INFO L231 Difference]: Finished difference. Result has 508 places, 438 transitions, 4692 flow [2024-06-04 14:45:45,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4575, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4692, PETRI_PLACES=508, PETRI_TRANSITIONS=438} [2024-06-04 14:45:45,982 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-04 14:45:45,982 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 438 transitions, 4692 flow [2024-06-04 14:45:45,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:45,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:45,982 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 14:45:45,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-04 14:45:45,982 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:45:45,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:45,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1208209387, now seen corresponding path program 27 times [2024-06-04 14:45:45,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:45,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146157131] [2024-06-04 14:45:45,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:45,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:47,176 INFO 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 14:45:47,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:47,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146157131] [2024-06-04 14:45:47,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146157131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:47,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:47,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:45:47,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170378959] [2024-06-04 14:45:47,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:47,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:45:47,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:47,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:45:47,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:45:47,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:45:47,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 438 transitions, 4692 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:47,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:47,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:45:47,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:48,073 INFO L124 PetriNetUnfolderBase]: 1218/2206 cut-off events. [2024-06-04 14:45:48,073 INFO L125 PetriNetUnfolderBase]: For 740429/740429 co-relation queries the response was YES. [2024-06-04 14:45:48,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20057 conditions, 2206 events. 1218/2206 cut-off events. For 740429/740429 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13462 event pairs, 198 based on Foata normal form. 2/2207 useless extension candidates. Maximal degree in co-relation 19825. Up to 2143 conditions per place. [2024-06-04 14:45:48,109 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 425 selfloop transitions, 26 changer transitions 0/453 dead transitions. [2024-06-04 14:45:48,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 453 transitions, 5670 flow [2024-06-04 14:45:48,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:45:48,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:45:48,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-04 14:45:48,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3207070707070707 [2024-06-04 14:45:48,111 INFO L175 Difference]: Start difference. First operand has 508 places, 438 transitions, 4692 flow. Second operand 12 states and 127 transitions. [2024-06-04 14:45:48,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 453 transitions, 5670 flow [2024-06-04 14:45:51,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 453 transitions, 5514 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:51,240 INFO L231 Difference]: Finished difference. Result has 510 places, 439 transitions, 4635 flow [2024-06-04 14:45:51,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4536, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4635, PETRI_PLACES=510, PETRI_TRANSITIONS=439} [2024-06-04 14:45:51,240 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 478 predicate places. [2024-06-04 14:45:51,240 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 439 transitions, 4635 flow [2024-06-04 14:45:51,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:51,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:51,241 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 14:45:51,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-04 14:45:51,241 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 14:45:51,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:51,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1865382379, now seen corresponding path program 28 times [2024-06-04 14:45:51,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:51,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907214755] [2024-06-04 14:45:51,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:51,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:45:52,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:52,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907214755] [2024-06-04 14:45:52,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907214755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:52,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:52,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:45:52,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972376353] [2024-06-04 14:45:52,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:52,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:45:52,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:52,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:45:52,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:45:52,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:45:52,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 439 transitions, 4635 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:52,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:52,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:45:52,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:53,262 INFO L124 PetriNetUnfolderBase]: 1222/2214 cut-off events. [2024-06-04 14:45:53,262 INFO L125 PetriNetUnfolderBase]: For 749548/749548 co-relation queries the response was YES. [2024-06-04 14:45:53,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20065 conditions, 2214 events. 1222/2214 cut-off events. For 749548/749548 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 13547 event pairs, 186 based on Foata normal form. 2/2215 useless extension candidates. Maximal degree in co-relation 19832. Up to 2019 conditions per place. [2024-06-04 14:45:53,292 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 404 selfloop transitions, 50 changer transitions 0/456 dead transitions. [2024-06-04 14:45:53,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 456 transitions, 5979 flow [2024-06-04 14:45:53,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:53,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:53,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 14:45:53,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-04 14:45:53,294 INFO L175 Difference]: Start difference. First operand has 510 places, 439 transitions, 4635 flow. Second operand 11 states and 129 transitions. [2024-06-04 14:45:53,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 456 transitions, 5979 flow [2024-06-04 14:45:56,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 456 transitions, 5894 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-04 14:45:56,370 INFO L231 Difference]: Finished difference. Result has 511 places, 440 transitions, 4704 flow [2024-06-04 14:45:56,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4550, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4704, PETRI_PLACES=511, PETRI_TRANSITIONS=440} [2024-06-04 14:45:56,371 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 479 predicate places. [2024-06-04 14:45:56,371 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 440 transitions, 4704 flow [2024-06-04 14:45:56,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:56,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:45:56,371 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 14:45:56,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-04 14:45:56,371 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 14:45:56,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:45:56,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1857963769, now seen corresponding path program 29 times [2024-06-04 14:45:56,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:45:56,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030658752] [2024-06-04 14:45:56,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:45:56,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:45:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:45:57,634 INFO 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 14:45:57,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:45:57,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030658752] [2024-06-04 14:45:57,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030658752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:45:57,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:45:57,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:45:57,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913620823] [2024-06-04 14:45:57,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:45:57,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:45:57,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:45:57,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:45:57,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:45:57,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:45:57,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 440 transitions, 4704 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:45:57,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:45:57,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:45:57,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:45:58,505 INFO L124 PetriNetUnfolderBase]: 1219/2209 cut-off events. [2024-06-04 14:45:58,506 INFO L125 PetriNetUnfolderBase]: For 727500/727500 co-relation queries the response was YES. [2024-06-04 14:45:58,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19713 conditions, 2209 events. 1219/2209 cut-off events. For 727500/727500 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 13505 event pairs, 185 based on Foata normal form. 2/2210 useless extension candidates. Maximal degree in co-relation 19479. Up to 2043 conditions per place. [2024-06-04 14:45:58,549 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 408 selfloop transitions, 46 changer transitions 0/456 dead transitions. [2024-06-04 14:45:58,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 456 transitions, 5656 flow [2024-06-04 14:45:58,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:45:58,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:45:58,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 14:45:58,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3581267217630854 [2024-06-04 14:45:58,550 INFO L175 Difference]: Start difference. First operand has 511 places, 440 transitions, 4704 flow. Second operand 11 states and 130 transitions. [2024-06-04 14:45:58,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 456 transitions, 5656 flow [2024-06-04 14:46:01,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 456 transitions, 5458 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-04 14:46:01,492 INFO L231 Difference]: Finished difference. Result has 513 places, 440 transitions, 4602 flow [2024-06-04 14:46:01,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4506, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4602, PETRI_PLACES=513, PETRI_TRANSITIONS=440} [2024-06-04 14:46:01,493 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 481 predicate places. [2024-06-04 14:46:01,493 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 440 transitions, 4602 flow [2024-06-04 14:46:01,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:01,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:01,493 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 14:46:01,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-04 14:46:01,493 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 14:46:01,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:01,494 INFO L85 PathProgramCache]: Analyzing trace with hash -645208879, now seen corresponding path program 21 times [2024-06-04 14:46:01,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:01,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134830309] [2024-06-04 14:46:01,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:01,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:02,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:02,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134830309] [2024-06-04 14:46:02,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134830309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:02,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:02,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:46:02,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758076832] [2024-06-04 14:46:02,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:02,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:46:02,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:02,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:46:02,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:46:02,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:46:02,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 440 transitions, 4602 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:02,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:02,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:46:02,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:03,537 INFO L124 PetriNetUnfolderBase]: 1231/2229 cut-off events. [2024-06-04 14:46:03,537 INFO L125 PetriNetUnfolderBase]: For 735610/735610 co-relation queries the response was YES. [2024-06-04 14:46:03,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19822 conditions, 2229 events. 1231/2229 cut-off events. For 735610/735610 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 13680 event pairs, 179 based on Foata normal form. 2/2230 useless extension candidates. Maximal degree in co-relation 19587. Up to 1964 conditions per place. [2024-06-04 14:46:03,572 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 400 selfloop transitions, 62 changer transitions 1/465 dead transitions. [2024-06-04 14:46:03,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 465 transitions, 5737 flow [2024-06-04 14:46:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:46:03,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:46:03,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 162 transitions. [2024-06-04 14:46:03,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35064935064935066 [2024-06-04 14:46:03,574 INFO L175 Difference]: Start difference. First operand has 513 places, 440 transitions, 4602 flow. Second operand 14 states and 162 transitions. [2024-06-04 14:46:03,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 465 transitions, 5737 flow [2024-06-04 14:46:06,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 465 transitions, 5624 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:46:06,268 INFO L231 Difference]: Finished difference. Result has 516 places, 444 transitions, 4759 flow [2024-06-04 14:46:06,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4489, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4759, PETRI_PLACES=516, PETRI_TRANSITIONS=444} [2024-06-04 14:46:06,269 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 484 predicate places. [2024-06-04 14:46:06,269 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 444 transitions, 4759 flow [2024-06-04 14:46:06,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:06,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:06,269 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 14:46:06,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-04 14:46:06,270 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 14:46:06,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:06,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1888649591, now seen corresponding path program 30 times [2024-06-04 14:46:06,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:06,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483100261] [2024-06-04 14:46:06,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:06,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:07,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:07,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483100261] [2024-06-04 14:46:07,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483100261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:07,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:07,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:46:07,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014224285] [2024-06-04 14:46:07,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:07,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:46:07,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:07,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:46:07,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:46:07,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:46:07,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 444 transitions, 4759 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:07,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:07,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:46:07,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:08,263 INFO L124 PetriNetUnfolderBase]: 1239/2241 cut-off events. [2024-06-04 14:46:08,264 INFO L125 PetriNetUnfolderBase]: For 745076/745076 co-relation queries the response was YES. [2024-06-04 14:46:08,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20096 conditions, 2241 events. 1239/2241 cut-off events. For 745076/745076 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 13722 event pairs, 189 based on Foata normal form. 2/2242 useless extension candidates. Maximal degree in co-relation 19861. Up to 2141 conditions per place. [2024-06-04 14:46:08,300 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 429 selfloop transitions, 31 changer transitions 0/462 dead transitions. [2024-06-04 14:46:08,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 462 transitions, 5803 flow [2024-06-04 14:46:08,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:46:08,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:46:08,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 14:46:08,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3443526170798898 [2024-06-04 14:46:08,301 INFO L175 Difference]: Start difference. First operand has 516 places, 444 transitions, 4759 flow. Second operand 11 states and 125 transitions. [2024-06-04 14:46:08,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 462 transitions, 5803 flow [2024-06-04 14:46:11,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 462 transitions, 5555 flow, removed 56 selfloop flow, removed 13 redundant places. [2024-06-04 14:46:11,646 INFO L231 Difference]: Finished difference. Result has 514 places, 447 transitions, 4663 flow [2024-06-04 14:46:11,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4513, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4663, PETRI_PLACES=514, PETRI_TRANSITIONS=447} [2024-06-04 14:46:11,646 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 482 predicate places. [2024-06-04 14:46:11,646 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 447 transitions, 4663 flow [2024-06-04 14:46:11,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:11,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:11,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:46:11,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-04 14:46:11,647 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 14:46:11,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:11,647 INFO L85 PathProgramCache]: Analyzing trace with hash -645209034, now seen corresponding path program 20 times [2024-06-04 14:46:11,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:11,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982678837] [2024-06-04 14:46:11,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:11,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:12,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:12,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:12,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982678837] [2024-06-04 14:46:12,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982678837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:12,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:12,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:46:12,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912171226] [2024-06-04 14:46:12,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:12,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:46:12,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:12,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:46:12,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:46:12,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:46:12,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 447 transitions, 4663 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:12,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:12,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:46:12,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:13,274 INFO L124 PetriNetUnfolderBase]: 1243/2249 cut-off events. [2024-06-04 14:46:13,275 INFO L125 PetriNetUnfolderBase]: For 752057/752057 co-relation queries the response was YES. [2024-06-04 14:46:13,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19992 conditions, 2249 events. 1243/2249 cut-off events. For 752057/752057 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 13805 event pairs, 203 based on Foata normal form. 2/2250 useless extension candidates. Maximal degree in co-relation 19758. Up to 2168 conditions per place. [2024-06-04 14:46:13,314 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 420 selfloop transitions, 38 changer transitions 0/460 dead transitions. [2024-06-04 14:46:13,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 460 transitions, 5649 flow [2024-06-04 14:46:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:46:13,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:46:13,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 14:46:13,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:46:13,315 INFO L175 Difference]: Start difference. First operand has 514 places, 447 transitions, 4663 flow. Second operand 12 states and 132 transitions. [2024-06-04 14:46:13,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 460 transitions, 5649 flow [2024-06-04 14:46:16,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 460 transitions, 5546 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-04 14:46:16,489 INFO L231 Difference]: Finished difference. Result has 519 places, 448 transitions, 4686 flow [2024-06-04 14:46:16,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4560, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4686, PETRI_PLACES=519, PETRI_TRANSITIONS=448} [2024-06-04 14:46:16,489 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 487 predicate places. [2024-06-04 14:46:16,490 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 448 transitions, 4686 flow [2024-06-04 14:46:16,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:16,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:16,490 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 14:46:16,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-04 14:46:16,490 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 14:46:16,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:16,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1630352321, now seen corresponding path program 31 times [2024-06-04 14:46:16,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:16,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973739322] [2024-06-04 14:46:16,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:16,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:17,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:17,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:17,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973739322] [2024-06-04 14:46:17,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973739322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:17,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:17,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:46:17,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520646248] [2024-06-04 14:46:17,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:17,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:46:17,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:17,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:46:17,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:46:17,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:46:17,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 448 transitions, 4686 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:17,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:17,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:46:17,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:18,547 INFO L124 PetriNetUnfolderBase]: 1247/2257 cut-off events. [2024-06-04 14:46:18,547 INFO L125 PetriNetUnfolderBase]: For 760564/760564 co-relation queries the response was YES. [2024-06-04 14:46:18,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20083 conditions, 2257 events. 1247/2257 cut-off events. For 760564/760564 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 13883 event pairs, 195 based on Foata normal form. 2/2258 useless extension candidates. Maximal degree in co-relation 19848. Up to 2143 conditions per place. [2024-06-04 14:46:18,584 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 431 selfloop transitions, 31 changer transitions 0/464 dead transitions. [2024-06-04 14:46:18,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 464 transitions, 5706 flow [2024-06-04 14:46:18,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:46:18,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:46:18,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 14:46:18,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-04 14:46:18,585 INFO L175 Difference]: Start difference. First operand has 519 places, 448 transitions, 4686 flow. Second operand 11 states and 127 transitions. [2024-06-04 14:46:18,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 464 transitions, 5706 flow [2024-06-04 14:46:21,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 464 transitions, 5543 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-04 14:46:21,723 INFO L231 Difference]: Finished difference. Result has 520 places, 449 transitions, 4649 flow [2024-06-04 14:46:21,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4523, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4649, PETRI_PLACES=520, PETRI_TRANSITIONS=449} [2024-06-04 14:46:21,723 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 488 predicate places. [2024-06-04 14:46:21,723 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 449 transitions, 4649 flow [2024-06-04 14:46:21,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:21,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:21,724 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 14:46:21,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-04 14:46:21,724 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 14:46:21,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:21,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1658302348, now seen corresponding path program 21 times [2024-06-04 14:46:21,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:21,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319561428] [2024-06-04 14:46:21,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:21,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:22,705 INFO 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 14:46:22,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:22,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319561428] [2024-06-04 14:46:22,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319561428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:22,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:22,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:46:22,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648281365] [2024-06-04 14:46:22,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:22,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:46:22,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:22,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:46:22,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:46:22,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:46:22,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 449 transitions, 4649 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:22,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:22,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:46:22,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:23,748 INFO L124 PetriNetUnfolderBase]: 1271/2309 cut-off events. [2024-06-04 14:46:23,749 INFO L125 PetriNetUnfolderBase]: For 957667/957667 co-relation queries the response was YES. [2024-06-04 14:46:23,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20470 conditions, 2309 events. 1271/2309 cut-off events. For 957667/957667 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 14235 event pairs, 181 based on Foata normal form. 14/2322 useless extension candidates. Maximal degree in co-relation 20234. Up to 1942 conditions per place. [2024-06-04 14:46:23,783 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 372 selfloop transitions, 89 changer transitions 12/475 dead transitions. [2024-06-04 14:46:23,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 475 transitions, 5829 flow [2024-06-04 14:46:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:46:23,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:46:23,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 159 transitions. [2024-06-04 14:46:23,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706293706293706 [2024-06-04 14:46:23,784 INFO L175 Difference]: Start difference. First operand has 520 places, 449 transitions, 4649 flow. Second operand 13 states and 159 transitions. [2024-06-04 14:46:23,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 475 transitions, 5829 flow [2024-06-04 14:46:27,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 475 transitions, 5713 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-04 14:46:27,008 INFO L231 Difference]: Finished difference. Result has 524 places, 445 transitions, 4711 flow [2024-06-04 14:46:27,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4533, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4711, PETRI_PLACES=524, PETRI_TRANSITIONS=445} [2024-06-04 14:46:27,008 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 492 predicate places. [2024-06-04 14:46:27,008 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 445 transitions, 4711 flow [2024-06-04 14:46:27,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:27,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:27,009 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 14:46:27,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-04 14:46:27,009 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 14:46:27,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:27,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1658302503, now seen corresponding path program 22 times [2024-06-04 14:46:27,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:27,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420339891] [2024-06-04 14:46:27,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:27,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:28,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:28,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420339891] [2024-06-04 14:46:28,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420339891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:28,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:28,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:46:28,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526481339] [2024-06-04 14:46:28,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:28,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:46:28,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:28,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:46:28,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:46:28,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:46:28,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 445 transitions, 4711 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:28,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:28,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:46:28,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:29,326 INFO L124 PetriNetUnfolderBase]: 1253/2269 cut-off events. [2024-06-04 14:46:29,326 INFO L125 PetriNetUnfolderBase]: For 812518/812518 co-relation queries the response was YES. [2024-06-04 14:46:29,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20937 conditions, 2269 events. 1253/2269 cut-off events. For 812518/812518 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 13981 event pairs, 179 based on Foata normal form. 2/2270 useless extension candidates. Maximal degree in co-relation 20700. Up to 1941 conditions per place. [2024-06-04 14:46:29,363 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 372 selfloop transitions, 94 changer transitions 0/468 dead transitions. [2024-06-04 14:46:29,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 468 transitions, 6283 flow [2024-06-04 14:46:29,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:46:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:46:29,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-04 14:46:29,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351981351981352 [2024-06-04 14:46:29,364 INFO L175 Difference]: Start difference. First operand has 524 places, 445 transitions, 4711 flow. Second operand 13 states and 151 transitions. [2024-06-04 14:46:29,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 468 transitions, 6283 flow [2024-06-04 14:46:33,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 468 transitions, 6064 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-04 14:46:33,058 INFO L231 Difference]: Finished difference. Result has 525 places, 449 transitions, 4920 flow [2024-06-04 14:46:33,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4492, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4920, PETRI_PLACES=525, PETRI_TRANSITIONS=449} [2024-06-04 14:46:33,058 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 493 predicate places. [2024-06-04 14:46:33,059 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 449 transitions, 4920 flow [2024-06-04 14:46:33,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:33,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:33,059 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 14:46:33,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-04 14:46:33,059 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 14:46:33,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:33,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1658298628, now seen corresponding path program 22 times [2024-06-04 14:46:33,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:33,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983460474] [2024-06-04 14:46:33,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:33,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:33,980 INFO 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 14:46:33,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:33,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983460474] [2024-06-04 14:46:33,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983460474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:33,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:33,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:46:33,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700081637] [2024-06-04 14:46:33,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:33,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:46:33,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:33,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:46:33,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:46:34,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:46:34,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 449 transitions, 4920 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:34,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:34,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:46:34,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:34,914 INFO L124 PetriNetUnfolderBase]: 1293/2349 cut-off events. [2024-06-04 14:46:34,914 INFO L125 PetriNetUnfolderBase]: For 1016066/1016066 co-relation queries the response was YES. [2024-06-04 14:46:34,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23782 conditions, 2349 events. 1293/2349 cut-off events. For 1016066/1016066 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 14489 event pairs, 191 based on Foata normal form. 2/2350 useless extension candidates. Maximal degree in co-relation 23544. Up to 1907 conditions per place. [2024-06-04 14:46:34,956 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 379 selfloop transitions, 93 changer transitions 0/474 dead transitions. [2024-06-04 14:46:34,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 474 transitions, 6460 flow [2024-06-04 14:46:34,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:46:34,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:46:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-04 14:46:34,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-04 14:46:34,957 INFO L175 Difference]: Start difference. First operand has 525 places, 449 transitions, 4920 flow. Second operand 12 states and 148 transitions. [2024-06-04 14:46:34,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 474 transitions, 6460 flow [2024-06-04 14:46:39,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 474 transitions, 6232 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-06-04 14:46:39,501 INFO L231 Difference]: Finished difference. Result has 528 places, 450 transitions, 4930 flow [2024-06-04 14:46:39,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4692, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4930, PETRI_PLACES=528, PETRI_TRANSITIONS=450} [2024-06-04 14:46:39,502 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 496 predicate places. [2024-06-04 14:46:39,502 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 450 transitions, 4930 flow [2024-06-04 14:46:39,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:39,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:39,502 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 14:46:39,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-04 14:46:39,503 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 14:46:39,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:39,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1624400393, now seen corresponding path program 23 times [2024-06-04 14:46:39,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:39,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766118632] [2024-06-04 14:46:39,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:39,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:40,468 INFO 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 14:46:40,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:40,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766118632] [2024-06-04 14:46:40,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766118632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:40,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:40,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:46:40,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741942438] [2024-06-04 14:46:40,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:40,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:46:40,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:40,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:46:40,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:46:40,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:46:40,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 450 transitions, 4930 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:40,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:40,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:46:40,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:41,453 INFO L124 PetriNetUnfolderBase]: 1299/2359 cut-off events. [2024-06-04 14:46:41,453 INFO L125 PetriNetUnfolderBase]: For 1026123/1026123 co-relation queries the response was YES. [2024-06-04 14:46:41,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23976 conditions, 2359 events. 1299/2359 cut-off events. For 1026123/1026123 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 14603 event pairs, 193 based on Foata normal form. 2/2360 useless extension candidates. Maximal degree in co-relation 23736. Up to 2062 conditions per place. [2024-06-04 14:46:41,494 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 389 selfloop transitions, 77 changer transitions 0/468 dead transitions. [2024-06-04 14:46:41,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 468 transitions, 6008 flow [2024-06-04 14:46:41,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:46:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:46:41,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 14:46:41,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-04 14:46:41,495 INFO L175 Difference]: Start difference. First operand has 528 places, 450 transitions, 4930 flow. Second operand 12 states and 141 transitions. [2024-06-04 14:46:41,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 468 transitions, 6008 flow [2024-06-04 14:46:45,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 468 transitions, 5530 flow, removed 27 selfloop flow, removed 13 redundant places. [2024-06-04 14:46:45,963 INFO L231 Difference]: Finished difference. Result has 527 places, 452 transitions, 4717 flow [2024-06-04 14:46:45,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4452, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4717, PETRI_PLACES=527, PETRI_TRANSITIONS=452} [2024-06-04 14:46:45,963 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 495 predicate places. [2024-06-04 14:46:45,963 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 452 transitions, 4717 flow [2024-06-04 14:46:45,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:45,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:45,964 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 14:46:45,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-04 14:46:45,964 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 14:46:45,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:45,964 INFO L85 PathProgramCache]: Analyzing trace with hash 822887799, now seen corresponding path program 32 times [2024-06-04 14:46:45,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:45,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983895746] [2024-06-04 14:46:45,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:45,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:46,959 INFO 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 14:46:46,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:46,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983895746] [2024-06-04 14:46:46,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983895746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:46,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:46,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:46:46,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662345981] [2024-06-04 14:46:46,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:46,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:46:46,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:46,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:46:46,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:46:47,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:46:47,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 452 transitions, 4717 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:47,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:47,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:46:47,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:47,759 INFO L124 PetriNetUnfolderBase]: 1224/2210 cut-off events. [2024-06-04 14:46:47,759 INFO L125 PetriNetUnfolderBase]: For 606996/606996 co-relation queries the response was YES. [2024-06-04 14:46:47,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17451 conditions, 2210 events. 1224/2210 cut-off events. For 606996/606996 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 13560 event pairs, 174 based on Foata normal form. 2/2211 useless extension candidates. Maximal degree in co-relation 17214. Up to 2123 conditions per place. [2024-06-04 14:46:47,794 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 438 selfloop transitions, 26 changer transitions 0/466 dead transitions. [2024-06-04 14:46:47,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 466 transitions, 5679 flow [2024-06-04 14:46:47,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:46:47,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:46:47,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-04 14:46:47,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:46:47,795 INFO L175 Difference]: Start difference. First operand has 527 places, 452 transitions, 4717 flow. Second operand 11 states and 121 transitions. [2024-06-04 14:46:47,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 466 transitions, 5679 flow [2024-06-04 14:46:50,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 466 transitions, 5398 flow, removed 65 selfloop flow, removed 10 redundant places. [2024-06-04 14:46:50,498 INFO L231 Difference]: Finished difference. Result has 528 places, 452 transitions, 4493 flow [2024-06-04 14:46:50,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4436, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4493, PETRI_PLACES=528, PETRI_TRANSITIONS=452} [2024-06-04 14:46:50,499 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 496 predicate places. [2024-06-04 14:46:50,499 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 452 transitions, 4493 flow [2024-06-04 14:46:50,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:50,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:50,499 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 14:46:50,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-04 14:46:50,499 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 14:46:50,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:50,500 INFO L85 PathProgramCache]: Analyzing trace with hash 969692957, now seen corresponding path program 24 times [2024-06-04 14:46:50,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:50,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100168210] [2024-06-04 14:46:50,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:50,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:46:51,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:51,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100168210] [2024-06-04 14:46:51,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100168210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:51,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:51,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:46:51,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327270820] [2024-06-04 14:46:51,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:51,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:46:51,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:51,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:46:51,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:46:51,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:46:51,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 452 transitions, 4493 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:51,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:51,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:46:51,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:52,570 INFO L124 PetriNetUnfolderBase]: 1220/2204 cut-off events. [2024-06-04 14:46:52,570 INFO L125 PetriNetUnfolderBase]: For 578016/578016 co-relation queries the response was YES. [2024-06-04 14:46:52,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16687 conditions, 2204 events. 1220/2204 cut-off events. For 578016/578016 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 13519 event pairs, 174 based on Foata normal form. 2/2205 useless extension candidates. Maximal degree in co-relation 16449. Up to 2128 conditions per place. [2024-06-04 14:46:52,606 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 438 selfloop transitions, 30 changer transitions 0/470 dead transitions. [2024-06-04 14:46:52,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 470 transitions, 5591 flow [2024-06-04 14:46:52,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:46:52,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:46:52,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-04 14:46:52,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33080808080808083 [2024-06-04 14:46:52,607 INFO L175 Difference]: Start difference. First operand has 528 places, 452 transitions, 4493 flow. Second operand 12 states and 131 transitions. [2024-06-04 14:46:52,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 470 transitions, 5591 flow [2024-06-04 14:46:54,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 470 transitions, 5531 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 14:46:54,984 INFO L231 Difference]: Finished difference. Result has 530 places, 454 transitions, 4621 flow [2024-06-04 14:46:54,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4433, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4621, PETRI_PLACES=530, PETRI_TRANSITIONS=454} [2024-06-04 14:46:54,985 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 498 predicate places. [2024-06-04 14:46:54,985 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 454 transitions, 4621 flow [2024-06-04 14:46:54,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:54,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:54,985 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 14:46:54,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-04 14:46:54,985 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 14:46:54,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:54,986 INFO L85 PathProgramCache]: Analyzing trace with hash -104048927, now seen corresponding path program 33 times [2024-06-04 14:46:54,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:54,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862903034] [2024-06-04 14:46:54,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:54,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:46:56,147 INFO 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 14:46:56,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:46:56,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862903034] [2024-06-04 14:46:56,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862903034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:46:56,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:46:56,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:46:56,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219603862] [2024-06-04 14:46:56,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:46:56,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:46:56,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:46:56,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:46:56,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:46:56,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:46:56,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 454 transitions, 4621 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:56,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:46:56,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:46:56,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:46:57,040 INFO L124 PetriNetUnfolderBase]: 1224/2212 cut-off events. [2024-06-04 14:46:57,040 INFO L125 PetriNetUnfolderBase]: For 585490/585490 co-relation queries the response was YES. [2024-06-04 14:46:57,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16880 conditions, 2212 events. 1224/2212 cut-off events. For 585490/585490 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 13605 event pairs, 174 based on Foata normal form. 2/2213 useless extension candidates. Maximal degree in co-relation 16641. Up to 2137 conditions per place. [2024-06-04 14:46:57,071 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 442 selfloop transitions, 26 changer transitions 0/470 dead transitions. [2024-06-04 14:46:57,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 470 transitions, 5657 flow [2024-06-04 14:46:57,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:46:57,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:46:57,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 14:46:57,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-06-04 14:46:57,072 INFO L175 Difference]: Start difference. First operand has 530 places, 454 transitions, 4621 flow. Second operand 11 states and 123 transitions. [2024-06-04 14:46:57,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 470 transitions, 5657 flow [2024-06-04 14:46:59,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 470 transitions, 5487 flow, removed 57 selfloop flow, removed 10 redundant places. [2024-06-04 14:46:59,343 INFO L231 Difference]: Finished difference. Result has 531 places, 455 transitions, 4569 flow [2024-06-04 14:46:59,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4451, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4569, PETRI_PLACES=531, PETRI_TRANSITIONS=455} [2024-06-04 14:46:59,344 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 499 predicate places. [2024-06-04 14:46:59,344 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 455 transitions, 4569 flow [2024-06-04 14:46:59,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:46:59,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:46:59,344 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 14:46:59,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-04 14:46:59,344 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 14:46:59,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:46:59,345 INFO L85 PathProgramCache]: Analyzing trace with hash 253393255, now seen corresponding path program 25 times [2024-06-04 14:46:59,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:46:59,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113528641] [2024-06-04 14:46:59,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:46:59,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:46:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:00,305 INFO 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 14:47:00,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:00,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113528641] [2024-06-04 14:47:00,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113528641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:00,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:00,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:47:00,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062151816] [2024-06-04 14:47:00,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:00,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:47:00,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:00,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:47:00,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:47:00,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:47:00,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 455 transitions, 4569 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:00,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:00,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:47:00,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:01,284 INFO L124 PetriNetUnfolderBase]: 1220/2206 cut-off events. [2024-06-04 14:47:01,285 INFO L125 PetriNetUnfolderBase]: For 555194/555194 co-relation queries the response was YES. [2024-06-04 14:47:01,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16290 conditions, 2206 events. 1220/2206 cut-off events. For 555194/555194 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 13605 event pairs, 165 based on Foata normal form. 2/2207 useless extension candidates. Maximal degree in co-relation 16050. Up to 2041 conditions per place. [2024-06-04 14:47:01,316 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 417 selfloop transitions, 53 changer transitions 0/472 dead transitions. [2024-06-04 14:47:01,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 472 transitions, 5557 flow [2024-06-04 14:47:01,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:47:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:47:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 14:47:01,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-04 14:47:01,317 INFO L175 Difference]: Start difference. First operand has 531 places, 455 transitions, 4569 flow. Second operand 12 states and 138 transitions. [2024-06-04 14:47:01,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 472 transitions, 5557 flow [2024-06-04 14:47:03,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 472 transitions, 5377 flow, removed 63 selfloop flow, removed 9 redundant places. [2024-06-04 14:47:03,668 INFO L231 Difference]: Finished difference. Result has 534 places, 455 transitions, 4500 flow [2024-06-04 14:47:03,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4389, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4500, PETRI_PLACES=534, PETRI_TRANSITIONS=455} [2024-06-04 14:47:03,669 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 502 predicate places. [2024-06-04 14:47:03,669 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 455 transitions, 4500 flow [2024-06-04 14:47:03,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:03,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:03,669 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 14:47:03,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-04 14:47:03,669 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 14:47:03,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:03,670 INFO L85 PathProgramCache]: Analyzing trace with hash 261027191, now seen corresponding path program 34 times [2024-06-04 14:47:03,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:03,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686029411] [2024-06-04 14:47:03,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:03,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:04,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:04,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686029411] [2024-06-04 14:47:04,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686029411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:04,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:04,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:47:04,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289673165] [2024-06-04 14:47:04,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:04,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:47:04,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:04,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:47:04,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:47:05,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:47:05,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 455 transitions, 4500 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:05,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:05,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:47:05,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:05,860 INFO L124 PetriNetUnfolderBase]: 1224/2214 cut-off events. [2024-06-04 14:47:05,860 INFO L125 PetriNetUnfolderBase]: For 559274/559274 co-relation queries the response was YES. [2024-06-04 14:47:05,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16311 conditions, 2214 events. 1224/2214 cut-off events. For 559274/559274 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 13670 event pairs, 175 based on Foata normal form. 2/2215 useless extension candidates. Maximal degree in co-relation 16070. Up to 2119 conditions per place. [2024-06-04 14:47:05,896 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 442 selfloop transitions, 27 changer transitions 0/471 dead transitions. [2024-06-04 14:47:05,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 471 transitions, 5538 flow [2024-06-04 14:47:05,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:47:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:47:05,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 14:47:05,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-04 14:47:05,897 INFO L175 Difference]: Start difference. First operand has 534 places, 455 transitions, 4500 flow. Second operand 11 states and 124 transitions. [2024-06-04 14:47:05,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 471 transitions, 5538 flow [2024-06-04 14:47:08,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 471 transitions, 5375 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-04 14:47:08,212 INFO L231 Difference]: Finished difference. Result has 534 places, 456 transitions, 4459 flow [2024-06-04 14:47:08,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4337, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4459, PETRI_PLACES=534, PETRI_TRANSITIONS=456} [2024-06-04 14:47:08,213 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 502 predicate places. [2024-06-04 14:47:08,213 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 456 transitions, 4459 flow [2024-06-04 14:47:08,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:08,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:08,213 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 14:47:08,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-04 14:47:08,213 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 14:47:08,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:08,214 INFO L85 PathProgramCache]: Analyzing trace with hash 253393100, now seen corresponding path program 23 times [2024-06-04 14:47:08,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:08,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136213029] [2024-06-04 14:47:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:08,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:09,098 INFO 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 14:47:09,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:09,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136213029] [2024-06-04 14:47:09,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136213029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:09,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:09,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:47:09,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106180450] [2024-06-04 14:47:09,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:09,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:47:09,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:09,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:47:09,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:47:09,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:47:09,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 456 transitions, 4459 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:09,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:09,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:47:09,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:09,871 INFO L124 PetriNetUnfolderBase]: 1221/2209 cut-off events. [2024-06-04 14:47:09,871 INFO L125 PetriNetUnfolderBase]: For 529850/529850 co-relation queries the response was YES. [2024-06-04 14:47:09,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15790 conditions, 2209 events. 1221/2209 cut-off events. For 529850/529850 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 13618 event pairs, 182 based on Foata normal form. 2/2210 useless extension candidates. Maximal degree in co-relation 15548. Up to 2170 conditions per place. [2024-06-04 14:47:09,902 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 446 selfloop transitions, 20 changer transitions 0/468 dead transitions. [2024-06-04 14:47:09,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 468 transitions, 5417 flow [2024-06-04 14:47:09,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:47:09,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:47:09,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-04 14:47:09,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31565656565656564 [2024-06-04 14:47:09,903 INFO L175 Difference]: Start difference. First operand has 534 places, 456 transitions, 4459 flow. Second operand 12 states and 125 transitions. [2024-06-04 14:47:09,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 468 transitions, 5417 flow [2024-06-04 14:47:12,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 468 transitions, 5301 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-04 14:47:12,024 INFO L231 Difference]: Finished difference. Result has 537 places, 456 transitions, 4387 flow [2024-06-04 14:47:12,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4343, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4387, PETRI_PLACES=537, PETRI_TRANSITIONS=456} [2024-06-04 14:47:12,025 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 505 predicate places. [2024-06-04 14:47:12,025 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 456 transitions, 4387 flow [2024-06-04 14:47:12,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:12,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:12,025 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 14:47:12,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-04 14:47:12,026 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 14:47:12,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:12,026 INFO L85 PathProgramCache]: Analyzing trace with hash 519632291, now seen corresponding path program 35 times [2024-06-04 14:47:12,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:12,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437928606] [2024-06-04 14:47:12,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:12,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:13,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:13,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:13,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437928606] [2024-06-04 14:47:13,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437928606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:13,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:13,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:47:13,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647536418] [2024-06-04 14:47:13,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:13,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:47:13,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:13,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:47:13,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:47:13,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:47:13,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 456 transitions, 4387 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:13,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:13,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:47:13,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:14,100 INFO L124 PetriNetUnfolderBase]: 1218/2204 cut-off events. [2024-06-04 14:47:14,100 INFO L125 PetriNetUnfolderBase]: For 497949/497949 co-relation queries the response was YES. [2024-06-04 14:47:14,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15225 conditions, 2204 events. 1218/2204 cut-off events. For 497949/497949 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 13593 event pairs, 175 based on Foata normal form. 2/2205 useless extension candidates. Maximal degree in co-relation 14982. Up to 2067 conditions per place. [2024-06-04 14:47:14,136 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 437 selfloop transitions, 31 changer transitions 0/470 dead transitions. [2024-06-04 14:47:14,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 470 transitions, 5355 flow [2024-06-04 14:47:14,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:47:14,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:47:14,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-04 14:47:14,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3282828282828283 [2024-06-04 14:47:14,138 INFO L175 Difference]: Start difference. First operand has 537 places, 456 transitions, 4387 flow. Second operand 12 states and 130 transitions. [2024-06-04 14:47:14,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 470 transitions, 5355 flow [2024-06-04 14:47:16,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 470 transitions, 4923 flow, removed 20 selfloop flow, removed 21 redundant places. [2024-06-04 14:47:16,315 INFO L231 Difference]: Finished difference. Result has 528 places, 456 transitions, 4021 flow [2024-06-04 14:47:16,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3955, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4021, PETRI_PLACES=528, PETRI_TRANSITIONS=456} [2024-06-04 14:47:16,316 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 496 predicate places. [2024-06-04 14:47:16,316 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 456 transitions, 4021 flow [2024-06-04 14:47:16,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:16,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:16,316 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 14:47:16,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-04 14:47:16,316 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 14:47:16,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:16,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1707345707, now seen corresponding path program 26 times [2024-06-04 14:47:16,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:16,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536573165] [2024-06-04 14:47:16,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:16,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:17,803 INFO 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 14:47:17,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:17,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536573165] [2024-06-04 14:47:17,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536573165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:17,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:17,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:47:17,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853380987] [2024-06-04 14:47:17,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:17,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:47:17,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:17,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:47:17,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:47:18,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:47:18,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 456 transitions, 4021 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:18,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:18,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:47:18,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:18,926 INFO L124 PetriNetUnfolderBase]: 1227/2211 cut-off events. [2024-06-04 14:47:18,927 INFO L125 PetriNetUnfolderBase]: For 290527/290530 co-relation queries the response was YES. [2024-06-04 14:47:18,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12708 conditions, 2211 events. 1227/2211 cut-off events. For 290527/290530 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 13681 event pairs, 143 based on Foata normal form. 4/2214 useless extension candidates. Maximal degree in co-relation 12465. Up to 2099 conditions per place. [2024-06-04 14:47:18,962 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 460 selfloop transitions, 40 changer transitions 0/502 dead transitions. [2024-06-04 14:47:18,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 502 transitions, 5385 flow [2024-06-04 14:47:18,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:47:18,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:47:18,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 156 transitions. [2024-06-04 14:47:18,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33766233766233766 [2024-06-04 14:47:18,964 INFO L175 Difference]: Start difference. First operand has 528 places, 456 transitions, 4021 flow. Second operand 14 states and 156 transitions. [2024-06-04 14:47:18,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 502 transitions, 5385 flow [2024-06-04 14:47:20,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 502 transitions, 4992 flow, removed 33 selfloop flow, removed 15 redundant places. [2024-06-04 14:47:20,517 INFO L231 Difference]: Finished difference. Result has 534 places, 479 transitions, 4080 flow [2024-06-04 14:47:20,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3633, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4080, PETRI_PLACES=534, PETRI_TRANSITIONS=479} [2024-06-04 14:47:20,517 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 502 predicate places. [2024-06-04 14:47:20,518 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 479 transitions, 4080 flow [2024-06-04 14:47:20,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:20,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:20,518 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 14:47:20,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-04 14:47:20,518 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 14:47:20,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:20,518 INFO L85 PathProgramCache]: Analyzing trace with hash -15701205, now seen corresponding path program 27 times [2024-06-04 14:47:20,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:20,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846992396] [2024-06-04 14:47:20,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:20,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:21,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:21,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:21,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846992396] [2024-06-04 14:47:21,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846992396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:21,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:21,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:47:21,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257866817] [2024-06-04 14:47:21,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:21,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:47:21,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:21,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:47:21,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:47:22,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:47:22,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 479 transitions, 4080 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:22,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:22,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:47:22,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:22,855 INFO L124 PetriNetUnfolderBase]: 1252/2254 cut-off events. [2024-06-04 14:47:22,856 INFO L125 PetriNetUnfolderBase]: For 293134/293134 co-relation queries the response was YES. [2024-06-04 14:47:22,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12526 conditions, 2254 events. 1252/2254 cut-off events. For 293134/293134 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 14003 event pairs, 147 based on Foata normal form. 2/2255 useless extension candidates. Maximal degree in co-relation 12279. Up to 2142 conditions per place. [2024-06-04 14:47:22,893 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 475 selfloop transitions, 41 changer transitions 0/518 dead transitions. [2024-06-04 14:47:22,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 518 transitions, 5437 flow [2024-06-04 14:47:22,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:47:22,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:47:22,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 156 transitions. [2024-06-04 14:47:22,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33766233766233766 [2024-06-04 14:47:22,894 INFO L175 Difference]: Start difference. First operand has 534 places, 479 transitions, 4080 flow. Second operand 14 states and 156 transitions. [2024-06-04 14:47:22,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 518 transitions, 5437 flow [2024-06-04 14:47:24,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 518 transitions, 5221 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-04 14:47:24,698 INFO L231 Difference]: Finished difference. Result has 551 places, 497 transitions, 4293 flow [2024-06-04 14:47:24,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3868, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4293, PETRI_PLACES=551, PETRI_TRANSITIONS=497} [2024-06-04 14:47:24,699 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 519 predicate places. [2024-06-04 14:47:24,699 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 497 transitions, 4293 flow [2024-06-04 14:47:24,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:24,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:24,699 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 14:47:24,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-04 14:47:24,699 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 14:47:24,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:24,700 INFO L85 PathProgramCache]: Analyzing trace with hash -960275039, now seen corresponding path program 28 times [2024-06-04 14:47:24,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:24,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018877234] [2024-06-04 14:47:24,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:24,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:25,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:25,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018877234] [2024-06-04 14:47:25,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018877234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:25,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:25,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:47:25,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498522561] [2024-06-04 14:47:25,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:25,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:47:25,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:25,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:47:25,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:47:25,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:47:25,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 497 transitions, 4293 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:25,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:25,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:47:25,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:26,397 INFO L124 PetriNetUnfolderBase]: 1281/2304 cut-off events. [2024-06-04 14:47:26,397 INFO L125 PetriNetUnfolderBase]: For 297021/297021 co-relation queries the response was YES. [2024-06-04 14:47:26,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12802 conditions, 2304 events. 1281/2304 cut-off events. For 297021/297021 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 14380 event pairs, 153 based on Foata normal form. 2/2305 useless extension candidates. Maximal degree in co-relation 12547. Up to 2166 conditions per place. [2024-06-04 14:47:26,444 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 480 selfloop transitions, 56 changer transitions 0/538 dead transitions. [2024-06-04 14:47:26,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 538 transitions, 5718 flow [2024-06-04 14:47:26,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:47:26,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:47:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 160 transitions. [2024-06-04 14:47:26,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463203463203463 [2024-06-04 14:47:26,445 INFO L175 Difference]: Start difference. First operand has 551 places, 497 transitions, 4293 flow. Second operand 14 states and 160 transitions. [2024-06-04 14:47:26,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 538 transitions, 5718 flow [2024-06-04 14:47:28,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 538 transitions, 5548 flow, removed 68 selfloop flow, removed 3 redundant places. [2024-06-04 14:47:28,185 INFO L231 Difference]: Finished difference. Result has 565 places, 511 transitions, 4544 flow [2024-06-04 14:47:28,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4125, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4544, PETRI_PLACES=565, PETRI_TRANSITIONS=511} [2024-06-04 14:47:28,185 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 533 predicate places. [2024-06-04 14:47:28,186 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 511 transitions, 4544 flow [2024-06-04 14:47:28,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:28,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:28,186 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 14:47:28,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-04 14:47:28,186 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 14:47:28,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:28,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1523926651, now seen corresponding path program 29 times [2024-06-04 14:47:28,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:28,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698313555] [2024-06-04 14:47:28,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:28,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:29,236 INFO 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 14:47:29,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:29,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698313555] [2024-06-04 14:47:29,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698313555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:29,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:29,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:47:29,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175223795] [2024-06-04 14:47:29,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:29,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:47:29,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:29,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:47:29,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:47:29,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:47:29,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 511 transitions, 4544 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:29,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:29,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:47:29,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:30,334 INFO L124 PetriNetUnfolderBase]: 1277/2298 cut-off events. [2024-06-04 14:47:30,334 INFO L125 PetriNetUnfolderBase]: For 261820/261820 co-relation queries the response was YES. [2024-06-04 14:47:30,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12309 conditions, 2298 events. 1277/2298 cut-off events. For 261820/261820 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 14355 event pairs, 158 based on Foata normal form. 2/2299 useless extension candidates. Maximal degree in co-relation 12050. Up to 2184 conditions per place. [2024-06-04 14:47:30,372 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 487 selfloop transitions, 48 changer transitions 0/537 dead transitions. [2024-06-04 14:47:30,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 537 transitions, 5715 flow [2024-06-04 14:47:30,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:47:30,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:47:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 156 transitions. [2024-06-04 14:47:30,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33766233766233766 [2024-06-04 14:47:30,374 INFO L175 Difference]: Start difference. First operand has 565 places, 511 transitions, 4544 flow. Second operand 14 states and 156 transitions. [2024-06-04 14:47:30,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 537 transitions, 5715 flow [2024-06-04 14:47:32,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 537 transitions, 5445 flow, removed 93 selfloop flow, removed 7 redundant places. [2024-06-04 14:47:32,065 INFO L231 Difference]: Finished difference. Result has 576 places, 515 transitions, 4460 flow [2024-06-04 14:47:32,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4276, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4460, PETRI_PLACES=576, PETRI_TRANSITIONS=515} [2024-06-04 14:47:32,066 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 544 predicate places. [2024-06-04 14:47:32,066 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 515 transitions, 4460 flow [2024-06-04 14:47:32,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:32,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:32,066 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 14:47:32,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-04 14:47:32,067 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 14:47:32,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:32,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1638508689, now seen corresponding path program 1 times [2024-06-04 14:47:32,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:32,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086085976] [2024-06-04 14:47:32,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:32,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:33,411 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 14:47:33,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:33,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086085976] [2024-06-04 14:47:33,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086085976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:33,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:33,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:47:33,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320973530] [2024-06-04 14:47:33,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:33,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:47:33,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:33,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:47:33,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:47:33,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:47:33,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 515 transitions, 4460 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:33,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:33,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:47:33,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:34,466 INFO L124 PetriNetUnfolderBase]: 1318/2385 cut-off events. [2024-06-04 14:47:34,467 INFO L125 PetriNetUnfolderBase]: For 552556/552556 co-relation queries the response was YES. [2024-06-04 14:47:34,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14699 conditions, 2385 events. 1318/2385 cut-off events. For 552556/552556 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 14887 event pairs, 157 based on Foata normal form. 8/2392 useless extension candidates. Maximal degree in co-relation 14435. Up to 1881 conditions per place. [2024-06-04 14:47:34,511 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 448 selfloop transitions, 86 changer transitions 16/552 dead transitions. [2024-06-04 14:47:34,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 552 transitions, 6212 flow [2024-06-04 14:47:34,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:47:34,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:47:34,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 170 transitions. [2024-06-04 14:47:34,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36796536796536794 [2024-06-04 14:47:34,513 INFO L175 Difference]: Start difference. First operand has 576 places, 515 transitions, 4460 flow. Second operand 14 states and 170 transitions. [2024-06-04 14:47:34,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 552 transitions, 6212 flow [2024-06-04 14:47:37,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 552 transitions, 5899 flow, removed 56 selfloop flow, removed 20 redundant places. [2024-06-04 14:47:37,100 INFO L231 Difference]: Finished difference. Result has 570 places, 511 transitions, 4301 flow [2024-06-04 14:47:37,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4147, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4301, PETRI_PLACES=570, PETRI_TRANSITIONS=511} [2024-06-04 14:47:37,100 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 538 predicate places. [2024-06-04 14:47:37,100 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 511 transitions, 4301 flow [2024-06-04 14:47:37,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:37,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:37,101 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 14:47:37,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-04 14:47:37,101 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 14:47:37,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:37,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1696601139, now seen corresponding path program 2 times [2024-06-04 14:47:37,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:37,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332281124] [2024-06-04 14:47:37,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:37,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:38,212 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 14:47:38,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:38,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332281124] [2024-06-04 14:47:38,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332281124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:38,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:38,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:47:38,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792894323] [2024-06-04 14:47:38,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:38,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:47:38,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:38,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:47:38,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:47:38,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:47:38,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 511 transitions, 4301 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:38,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:38,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:47:38,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:39,337 INFO L124 PetriNetUnfolderBase]: 1339/2430 cut-off events. [2024-06-04 14:47:39,337 INFO L125 PetriNetUnfolderBase]: For 743447/743447 co-relation queries the response was YES. [2024-06-04 14:47:39,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16900 conditions, 2430 events. 1339/2430 cut-off events. For 743447/743447 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 15184 event pairs, 174 based on Foata normal form. 8/2437 useless extension candidates. Maximal degree in co-relation 16647. Up to 2054 conditions per place. [2024-06-04 14:47:39,381 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 450 selfloop transitions, 86 changer transitions 10/548 dead transitions. [2024-06-04 14:47:39,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 548 transitions, 6045 flow [2024-06-04 14:47:39,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:47:39,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:47:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 169 transitions. [2024-06-04 14:47:39,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3658008658008658 [2024-06-04 14:47:39,382 INFO L175 Difference]: Start difference. First operand has 570 places, 511 transitions, 4301 flow. Second operand 14 states and 169 transitions. [2024-06-04 14:47:39,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 548 transitions, 6045 flow [2024-06-04 14:47:42,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 548 transitions, 5896 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-04 14:47:42,643 INFO L231 Difference]: Finished difference. Result has 567 places, 510 transitions, 4332 flow [2024-06-04 14:47:42,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4160, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4332, PETRI_PLACES=567, PETRI_TRANSITIONS=510} [2024-06-04 14:47:42,644 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 535 predicate places. [2024-06-04 14:47:42,644 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 510 transitions, 4332 flow [2024-06-04 14:47:42,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:42,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:42,644 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 14:47:42,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-04 14:47:42,644 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 14:47:42,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:42,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1696716459, now seen corresponding path program 3 times [2024-06-04 14:47:42,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:42,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511299097] [2024-06-04 14:47:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:42,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:43,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:43,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:43,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511299097] [2024-06-04 14:47:43,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511299097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:43,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:43,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:47:43,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034502253] [2024-06-04 14:47:43,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:43,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:47:43,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:43,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:47:43,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:47:43,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:47:43,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 510 transitions, 4332 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:43,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:43,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:47:43,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:44,773 INFO L124 PetriNetUnfolderBase]: 1329/2412 cut-off events. [2024-06-04 14:47:44,773 INFO L125 PetriNetUnfolderBase]: For 720806/720806 co-relation queries the response was YES. [2024-06-04 14:47:44,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16859 conditions, 2412 events. 1329/2412 cut-off events. For 720806/720806 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 15048 event pairs, 168 based on Foata normal form. 8/2419 useless extension candidates. Maximal degree in co-relation 16607. Up to 2054 conditions per place. [2024-06-04 14:47:44,817 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 449 selfloop transitions, 86 changer transitions 7/544 dead transitions. [2024-06-04 14:47:44,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 544 transitions, 6053 flow [2024-06-04 14:47:44,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:47:44,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:47:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 166 transitions. [2024-06-04 14:47:44,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3593073593073593 [2024-06-04 14:47:44,845 INFO L175 Difference]: Start difference. First operand has 567 places, 510 transitions, 4332 flow. Second operand 14 states and 166 transitions. [2024-06-04 14:47:44,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 544 transitions, 6053 flow [2024-06-04 14:47:48,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 544 transitions, 5873 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 14:47:48,147 INFO L231 Difference]: Finished difference. Result has 567 places, 509 transitions, 4323 flow [2024-06-04 14:47:48,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4154, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4323, PETRI_PLACES=567, PETRI_TRANSITIONS=509} [2024-06-04 14:47:48,148 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 535 predicate places. [2024-06-04 14:47:48,148 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 509 transitions, 4323 flow [2024-06-04 14:47:48,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:48,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:48,148 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 14:47:48,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-04 14:47:48,148 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 14:47:48,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:48,149 INFO L85 PathProgramCache]: Analyzing trace with hash -763132231, now seen corresponding path program 4 times [2024-06-04 14:47:48,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:48,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35040910] [2024-06-04 14:47:48,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:48,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:49,138 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 14:47:49,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:49,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35040910] [2024-06-04 14:47:49,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35040910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:49,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:49,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:47:49,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099144367] [2024-06-04 14:47:49,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:49,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:47:49,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:49,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:47:49,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:47:49,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:47:49,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 509 transitions, 4323 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:49,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:49,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:47:49,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:50,207 INFO L124 PetriNetUnfolderBase]: 1298/2351 cut-off events. [2024-06-04 14:47:50,207 INFO L125 PetriNetUnfolderBase]: For 578803/578803 co-relation queries the response was YES. [2024-06-04 14:47:50,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14580 conditions, 2351 events. 1298/2351 cut-off events. For 578803/578803 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 14657 event pairs, 161 based on Foata normal form. 10/2360 useless extension candidates. Maximal degree in co-relation 14329. Up to 2054 conditions per place. [2024-06-04 14:47:50,247 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 435 selfloop transitions, 76 changer transitions 24/537 dead transitions. [2024-06-04 14:47:50,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 537 transitions, 5577 flow [2024-06-04 14:47:50,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:47:50,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:47:50,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 160 transitions. [2024-06-04 14:47:50,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463203463203463 [2024-06-04 14:47:50,248 INFO L175 Difference]: Start difference. First operand has 567 places, 509 transitions, 4323 flow. Second operand 14 states and 160 transitions. [2024-06-04 14:47:50,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 537 transitions, 5577 flow [2024-06-04 14:47:52,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 537 transitions, 5401 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-04 14:47:52,642 INFO L231 Difference]: Finished difference. Result has 567 places, 497 transitions, 4146 flow [2024-06-04 14:47:52,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4147, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4146, PETRI_PLACES=567, PETRI_TRANSITIONS=497} [2024-06-04 14:47:52,642 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 535 predicate places. [2024-06-04 14:47:52,642 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 497 transitions, 4146 flow [2024-06-04 14:47:52,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:52,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:52,643 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 14:47:52,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-04 14:47:52,643 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 14:47:52,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:52,644 INFO L85 PathProgramCache]: Analyzing trace with hash -780076757, now seen corresponding path program 5 times [2024-06-04 14:47:52,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:52,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020164679] [2024-06-04 14:47:52,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:52,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:53,773 INFO 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 14:47:53,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:53,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020164679] [2024-06-04 14:47:53,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020164679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:53,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:53,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:47:53,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367882293] [2024-06-04 14:47:53,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:53,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:47:53,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:53,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:47:53,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:47:53,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:47:53,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 497 transitions, 4146 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:53,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:53,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:47:53,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:47:54,875 INFO L124 PetriNetUnfolderBase]: 1301/2371 cut-off events. [2024-06-04 14:47:54,876 INFO L125 PetriNetUnfolderBase]: For 720434/720434 co-relation queries the response was YES. [2024-06-04 14:47:54,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16515 conditions, 2371 events. 1301/2371 cut-off events. For 720434/720434 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 14843 event pairs, 179 based on Foata normal form. 8/2378 useless extension candidates. Maximal degree in co-relation 16265. Up to 2074 conditions per place. [2024-06-04 14:47:54,908 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 459 selfloop transitions, 55 changer transitions 11/527 dead transitions. [2024-06-04 14:47:54,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 527 transitions, 5821 flow [2024-06-04 14:47:54,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:47:54,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:47:54,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 149 transitions. [2024-06-04 14:47:54,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3473193473193473 [2024-06-04 14:47:54,909 INFO L175 Difference]: Start difference. First operand has 567 places, 497 transitions, 4146 flow. Second operand 13 states and 149 transitions. [2024-06-04 14:47:54,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 527 transitions, 5821 flow [2024-06-04 14:47:58,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 527 transitions, 5638 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-04 14:47:58,292 INFO L231 Difference]: Finished difference. Result has 556 places, 492 transitions, 4038 flow [2024-06-04 14:47:58,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3971, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4038, PETRI_PLACES=556, PETRI_TRANSITIONS=492} [2024-06-04 14:47:58,292 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 524 predicate places. [2024-06-04 14:47:58,293 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 492 transitions, 4038 flow [2024-06-04 14:47:58,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:58,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:47:58,293 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 14:47:58,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-04 14:47:58,293 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 14:47:58,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:47:58,293 INFO L85 PathProgramCache]: Analyzing trace with hash 93668573, now seen corresponding path program 6 times [2024-06-04 14:47:58,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:47:58,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678036020] [2024-06-04 14:47:58,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:47:58,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:47:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:47:59,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:47:59,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:47:59,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678036020] [2024-06-04 14:47:59,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678036020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:47:59,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:47:59,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:47:59,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698325731] [2024-06-04 14:47:59,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:47:59,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:47:59,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:47:59,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:47:59,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:47:59,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:47:59,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 492 transitions, 4038 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:47:59,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:47:59,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:47:59,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:00,559 INFO L124 PetriNetUnfolderBase]: 1262/2302 cut-off events. [2024-06-04 14:48:00,559 INFO L125 PetriNetUnfolderBase]: For 566314/566314 co-relation queries the response was YES. [2024-06-04 14:48:00,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14040 conditions, 2302 events. 1262/2302 cut-off events. For 566314/566314 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 14421 event pairs, 170 based on Foata normal form. 10/2311 useless extension candidates. Maximal degree in co-relation 13794. Up to 2074 conditions per place. [2024-06-04 14:48:00,597 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 445 selfloop transitions, 36 changer transitions 33/516 dead transitions. [2024-06-04 14:48:00,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 516 transitions, 5236 flow [2024-06-04 14:48:00,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:48:00,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:48:00,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-04 14:48:00,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 14:48:00,598 INFO L175 Difference]: Start difference. First operand has 556 places, 492 transitions, 4038 flow. Second operand 13 states and 143 transitions. [2024-06-04 14:48:00,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 516 transitions, 5236 flow [2024-06-04 14:48:03,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 516 transitions, 5122 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:48:03,475 INFO L231 Difference]: Finished difference. Result has 556 places, 469 transitions, 3771 flow [2024-06-04 14:48:03,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3924, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3771, PETRI_PLACES=556, PETRI_TRANSITIONS=469} [2024-06-04 14:48:03,476 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 524 predicate places. [2024-06-04 14:48:03,476 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 469 transitions, 3771 flow [2024-06-04 14:48:03,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:03,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:03,476 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 14:48:03,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-04 14:48:03,476 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 14:48:03,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:03,477 INFO L85 PathProgramCache]: Analyzing trace with hash 89199923, now seen corresponding path program 7 times [2024-06-04 14:48:03,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:03,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271457454] [2024-06-04 14:48:03,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:03,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:04,861 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 14:48:04,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:04,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271457454] [2024-06-04 14:48:04,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271457454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:04,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:04,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:48:04,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011318323] [2024-06-04 14:48:04,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:04,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:48:04,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:04,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:48:04,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:48:05,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:48:05,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 469 transitions, 3771 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:05,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:05,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:48:05,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:05,832 INFO L124 PetriNetUnfolderBase]: 1212/2212 cut-off events. [2024-06-04 14:48:05,832 INFO L125 PetriNetUnfolderBase]: For 565991/565991 co-relation queries the response was YES. [2024-06-04 14:48:05,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13529 conditions, 2212 events. 1212/2212 cut-off events. For 565991/565991 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 13734 event pairs, 195 based on Foata normal form. 10/2221 useless extension candidates. Maximal degree in co-relation 13284. Up to 2122 conditions per place. [2024-06-04 14:48:05,868 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 461 selfloop transitions, 17 changer transitions 11/491 dead transitions. [2024-06-04 14:48:05,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 491 transitions, 4917 flow [2024-06-04 14:48:05,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:48:05,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:48:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 147 transitions. [2024-06-04 14:48:05,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-04 14:48:05,869 INFO L175 Difference]: Start difference. First operand has 556 places, 469 transitions, 3771 flow. Second operand 14 states and 147 transitions. [2024-06-04 14:48:05,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 491 transitions, 4917 flow [2024-06-04 14:48:08,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 491 transitions, 4775 flow, removed 15 selfloop flow, removed 18 redundant places. [2024-06-04 14:48:08,063 INFO L231 Difference]: Finished difference. Result has 541 places, 466 transitions, 3648 flow [2024-06-04 14:48:08,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3629, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3648, PETRI_PLACES=541, PETRI_TRANSITIONS=466} [2024-06-04 14:48:08,063 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 509 predicate places. [2024-06-04 14:48:08,063 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 466 transitions, 3648 flow [2024-06-04 14:48:08,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:08,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:08,064 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 14:48:08,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-04 14:48:08,064 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 14:48:08,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:08,065 INFO L85 PathProgramCache]: Analyzing trace with hash 446240135, now seen corresponding path program 8 times [2024-06-04 14:48:08,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:08,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85551181] [2024-06-04 14:48:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:08,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:09,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:09,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85551181] [2024-06-04 14:48:09,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85551181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:09,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:09,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:48:09,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88911026] [2024-06-04 14:48:09,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:09,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:48:09,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:09,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:48:09,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:48:09,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:48:09,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 466 transitions, 3648 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:09,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:09,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:48:09,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:10,110 INFO L124 PetriNetUnfolderBase]: 1204/2200 cut-off events. [2024-06-04 14:48:10,110 INFO L125 PetriNetUnfolderBase]: For 528037/528037 co-relation queries the response was YES. [2024-06-04 14:48:10,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13249 conditions, 2200 events. 1204/2200 cut-off events. For 528037/528037 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 13648 event pairs, 193 based on Foata normal form. 8/2207 useless extension candidates. Maximal degree in co-relation 13011. Up to 2120 conditions per place. [2024-06-04 14:48:10,145 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 460 selfloop transitions, 15 changer transitions 11/488 dead transitions. [2024-06-04 14:48:10,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 488 transitions, 4731 flow [2024-06-04 14:48:10,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:48:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:48:10,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 144 transitions. [2024-06-04 14:48:10,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3116883116883117 [2024-06-04 14:48:10,146 INFO L175 Difference]: Start difference. First operand has 541 places, 466 transitions, 3648 flow. Second operand 14 states and 144 transitions. [2024-06-04 14:48:10,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 488 transitions, 4731 flow [2024-06-04 14:48:12,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 488 transitions, 4691 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-04 14:48:12,324 INFO L231 Difference]: Finished difference. Result has 539 places, 464 transitions, 3630 flow [2024-06-04 14:48:12,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3608, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3630, PETRI_PLACES=539, PETRI_TRANSITIONS=464} [2024-06-04 14:48:12,325 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 507 predicate places. [2024-06-04 14:48:12,325 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 464 transitions, 3630 flow [2024-06-04 14:48:12,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:12,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:12,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:12,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-04 14:48:12,325 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 14:48:12,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:12,326 INFO L85 PathProgramCache]: Analyzing trace with hash 89079953, now seen corresponding path program 9 times [2024-06-04 14:48:12,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:12,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079110675] [2024-06-04 14:48:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:12,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:13,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:13,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079110675] [2024-06-04 14:48:13,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079110675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:13,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:13,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:48:13,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985334335] [2024-06-04 14:48:13,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:13,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:48:13,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:13,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:48:13,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:48:13,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:48:13,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 464 transitions, 3630 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:13,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:13,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:48:13,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:14,326 INFO L124 PetriNetUnfolderBase]: 1197/2187 cut-off events. [2024-06-04 14:48:14,326 INFO L125 PetriNetUnfolderBase]: For 517355/517355 co-relation queries the response was YES. [2024-06-04 14:48:14,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13164 conditions, 2187 events. 1197/2187 cut-off events. For 517355/517355 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 13514 event pairs, 149 based on Foata normal form. 8/2194 useless extension candidates. Maximal degree in co-relation 12927. Up to 1881 conditions per place. [2024-06-04 14:48:14,360 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 430 selfloop transitions, 45 changer transitions 17/494 dead transitions. [2024-06-04 14:48:14,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 494 transitions, 5228 flow [2024-06-04 14:48:14,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:48:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:48:14,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 151 transitions. [2024-06-04 14:48:14,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351981351981352 [2024-06-04 14:48:14,361 INFO L175 Difference]: Start difference. First operand has 539 places, 464 transitions, 3630 flow. Second operand 13 states and 151 transitions. [2024-06-04 14:48:14,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 494 transitions, 5228 flow [2024-06-04 14:48:16,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 494 transitions, 5192 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 14:48:16,304 INFO L231 Difference]: Finished difference. Result has 536 places, 454 transitions, 3607 flow [2024-06-04 14:48:16,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3596, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3607, PETRI_PLACES=536, PETRI_TRANSITIONS=454} [2024-06-04 14:48:16,305 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 504 predicate places. [2024-06-04 14:48:16,305 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 454 transitions, 3607 flow [2024-06-04 14:48:16,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:16,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:16,305 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 14:48:16,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-04 14:48:16,306 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 14:48:16,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:16,306 INFO L85 PathProgramCache]: Analyzing trace with hash -785255373, now seen corresponding path program 10 times [2024-06-04 14:48:16,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:16,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254037788] [2024-06-04 14:48:16,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:16,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:17,633 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 14:48:17,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:17,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254037788] [2024-06-04 14:48:17,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254037788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:17,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:17,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:48:17,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569504711] [2024-06-04 14:48:17,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:17,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:48:17,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:17,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:48:17,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:48:17,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:48:17,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 454 transitions, 3607 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:17,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:17,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:48:17,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:18,577 INFO L124 PetriNetUnfolderBase]: 1211/2222 cut-off events. [2024-06-04 14:48:18,577 INFO L125 PetriNetUnfolderBase]: For 722807/722807 co-relation queries the response was YES. [2024-06-04 14:48:18,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15840 conditions, 2222 events. 1211/2222 cut-off events. For 722807/722807 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 13733 event pairs, 127 based on Foata normal form. 8/2229 useless extension candidates. Maximal degree in co-relation 15604. Up to 1138 conditions per place. [2024-06-04 14:48:18,616 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 289 selfloop transitions, 185 changer transitions 10/486 dead transitions. [2024-06-04 14:48:18,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 486 transitions, 5209 flow [2024-06-04 14:48:18,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:48:18,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:48:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-04 14:48:18,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-04 14:48:18,617 INFO L175 Difference]: Start difference. First operand has 536 places, 454 transitions, 3607 flow. Second operand 12 states and 164 transitions. [2024-06-04 14:48:18,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 486 transitions, 5209 flow [2024-06-04 14:48:21,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 486 transitions, 5119 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 14:48:21,830 INFO L231 Difference]: Finished difference. Result has 529 places, 451 transitions, 3881 flow [2024-06-04 14:48:21,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3523, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3881, PETRI_PLACES=529, PETRI_TRANSITIONS=451} [2024-06-04 14:48:21,831 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 497 predicate places. [2024-06-04 14:48:21,831 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 451 transitions, 3881 flow [2024-06-04 14:48:21,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:21,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:21,831 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 14:48:21,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-04 14:48:21,831 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 14:48:21,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:21,832 INFO L85 PathProgramCache]: Analyzing trace with hash -652904357, now seen corresponding path program 11 times [2024-06-04 14:48:21,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:21,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481353326] [2024-06-04 14:48:21,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:21,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:23,093 INFO 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 14:48:23,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:23,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481353326] [2024-06-04 14:48:23,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481353326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:23,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:23,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:48:23,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653868423] [2024-06-04 14:48:23,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:23,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:48:23,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:23,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:48:23,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:48:23,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:48:23,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 451 transitions, 3881 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:23,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:23,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:48:23,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:24,183 INFO L124 PetriNetUnfolderBase]: 1205/2212 cut-off events. [2024-06-04 14:48:24,183 INFO L125 PetriNetUnfolderBase]: For 743965/743965 co-relation queries the response was YES. [2024-06-04 14:48:24,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16239 conditions, 2212 events. 1205/2212 cut-off events. For 743965/743965 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 13662 event pairs, 127 based on Foata normal form. 10/2221 useless extension candidates. Maximal degree in co-relation 16005. Up to 1484 conditions per place. [2024-06-04 14:48:24,212 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 308 selfloop transitions, 158 changer transitions 11/479 dead transitions. [2024-06-04 14:48:24,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 479 transitions, 5023 flow [2024-06-04 14:48:24,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:48:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:48:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 170 transitions. [2024-06-04 14:48:24,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962703962703963 [2024-06-04 14:48:24,213 INFO L175 Difference]: Start difference. First operand has 529 places, 451 transitions, 3881 flow. Second operand 13 states and 170 transitions. [2024-06-04 14:48:24,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 479 transitions, 5023 flow [2024-06-04 14:48:26,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 479 transitions, 4659 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:48:26,868 INFO L231 Difference]: Finished difference. Result has 527 places, 448 transitions, 3818 flow [2024-06-04 14:48:26,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3517, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3818, PETRI_PLACES=527, PETRI_TRANSITIONS=448} [2024-06-04 14:48:26,869 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 495 predicate places. [2024-06-04 14:48:26,869 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 448 transitions, 3818 flow [2024-06-04 14:48:26,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:26,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:26,869 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 14:48:26,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-04 14:48:26,870 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 14:48:26,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:26,870 INFO L85 PathProgramCache]: Analyzing trace with hash -428095191, now seen corresponding path program 12 times [2024-06-04 14:48:26,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:26,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430342513] [2024-06-04 14:48:26,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:26,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:28,308 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 14:48:28,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:28,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430342513] [2024-06-04 14:48:28,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430342513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:28,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:28,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:48:28,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072392952] [2024-06-04 14:48:28,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:28,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:48:28,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:28,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:48:28,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:48:28,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:48:28,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 448 transitions, 3818 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:28,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:28,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:48:28,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:29,324 INFO L124 PetriNetUnfolderBase]: 1468/2673 cut-off events. [2024-06-04 14:48:29,325 INFO L125 PetriNetUnfolderBase]: For 859150/859150 co-relation queries the response was YES. [2024-06-04 14:48:29,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20297 conditions, 2673 events. 1468/2673 cut-off events. For 859150/859150 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 17005 event pairs, 285 based on Foata normal form. 8/2680 useless extension candidates. Maximal degree in co-relation 20065. Up to 1981 conditions per place. [2024-06-04 14:48:29,366 INFO L140 encePairwiseOnDemand]: 18/33 looper letters, 449 selfloop transitions, 132 changer transitions 10/593 dead transitions. [2024-06-04 14:48:29,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 593 transitions, 6594 flow [2024-06-04 14:48:29,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-04 14:48:29,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-04 14:48:29,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 186 transitions. [2024-06-04 14:48:29,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-04 14:48:29,368 INFO L175 Difference]: Start difference. First operand has 527 places, 448 transitions, 3818 flow. Second operand 15 states and 186 transitions. [2024-06-04 14:48:29,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 593 transitions, 6594 flow [2024-06-04 14:48:32,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 593 transitions, 6130 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:48:32,601 INFO L231 Difference]: Finished difference. Result has 536 places, 515 transitions, 4678 flow [2024-06-04 14:48:32,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3498, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4678, PETRI_PLACES=536, PETRI_TRANSITIONS=515} [2024-06-04 14:48:32,601 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 504 predicate places. [2024-06-04 14:48:32,601 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 515 transitions, 4678 flow [2024-06-04 14:48:32,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:32,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:32,602 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 14:48:32,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-04 14:48:32,602 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 14:48:32,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:32,602 INFO L85 PathProgramCache]: Analyzing trace with hash -780666753, now seen corresponding path program 13 times [2024-06-04 14:48:32,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:32,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766061467] [2024-06-04 14:48:32,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:32,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:33,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:33,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766061467] [2024-06-04 14:48:33,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766061467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:33,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:33,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:48:33,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126903963] [2024-06-04 14:48:33,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:33,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:48:33,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:33,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:48:33,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:48:33,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:48:33,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 515 transitions, 4678 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:33,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:33,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:48:33,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:34,697 INFO L124 PetriNetUnfolderBase]: 1449/2640 cut-off events. [2024-06-04 14:48:34,698 INFO L125 PetriNetUnfolderBase]: For 884517/884517 co-relation queries the response was YES. [2024-06-04 14:48:34,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18597 conditions, 2640 events. 1449/2640 cut-off events. For 884517/884517 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 16746 event pairs, 131 based on Foata normal form. 20/2659 useless extension candidates. Maximal degree in co-relation 18357. Up to 1630 conditions per place. [2024-06-04 14:48:34,743 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 317 selfloop transitions, 207 changer transitions 16/542 dead transitions. [2024-06-04 14:48:34,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 542 transitions, 5942 flow [2024-06-04 14:48:34,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:48:34,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:48:34,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-04 14:48:34,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38694638694638694 [2024-06-04 14:48:34,744 INFO L175 Difference]: Start difference. First operand has 536 places, 515 transitions, 4678 flow. Second operand 13 states and 166 transitions. [2024-06-04 14:48:34,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 542 transitions, 5942 flow [2024-06-04 14:48:38,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 542 transitions, 5699 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 14:48:38,221 INFO L231 Difference]: Finished difference. Result has 541 places, 507 transitions, 4782 flow [2024-06-04 14:48:38,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4435, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4782, PETRI_PLACES=541, PETRI_TRANSITIONS=507} [2024-06-04 14:48:38,222 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 509 predicate places. [2024-06-04 14:48:38,222 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 507 transitions, 4782 flow [2024-06-04 14:48:38,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:38,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:38,222 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 14:48:38,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-04 14:48:38,222 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 14:48:38,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:38,223 INFO L85 PathProgramCache]: Analyzing trace with hash -199756349, now seen corresponding path program 1 times [2024-06-04 14:48:38,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:38,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654535277] [2024-06-04 14:48:38,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:38,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:39,371 INFO 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 14:48:39,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:39,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654535277] [2024-06-04 14:48:39,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654535277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:39,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:39,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:48:39,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003946002] [2024-06-04 14:48:39,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:39,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:48:39,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:39,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:48:39,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:48:39,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:48:39,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 507 transitions, 4782 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:39,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:39,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:48:39,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:40,254 INFO L124 PetriNetUnfolderBase]: 1414/2563 cut-off events. [2024-06-04 14:48:40,254 INFO L125 PetriNetUnfolderBase]: For 592158/592158 co-relation queries the response was YES. [2024-06-04 14:48:40,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18212 conditions, 2563 events. 1414/2563 cut-off events. For 592158/592158 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 16215 event pairs, 141 based on Foata normal form. 2/2564 useless extension candidates. Maximal degree in co-relation 17973. Up to 1693 conditions per place. [2024-06-04 14:48:40,303 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 336 selfloop transitions, 196 changer transitions 0/534 dead transitions. [2024-06-04 14:48:40,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 534 transitions, 5974 flow [2024-06-04 14:48:40,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:48:40,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:48:40,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 14:48:40,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-04 14:48:40,305 INFO L175 Difference]: Start difference. First operand has 541 places, 507 transitions, 4782 flow. Second operand 12 states and 152 transitions. [2024-06-04 14:48:40,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 534 transitions, 5974 flow [2024-06-04 14:48:43,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 534 transitions, 5540 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-04 14:48:43,433 INFO L231 Difference]: Finished difference. Result has 533 places, 512 transitions, 4813 flow [2024-06-04 14:48:43,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4356, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4813, PETRI_PLACES=533, PETRI_TRANSITIONS=512} [2024-06-04 14:48:43,433 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 501 predicate places. [2024-06-04 14:48:43,434 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 512 transitions, 4813 flow [2024-06-04 14:48:43,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:43,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:43,434 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 14:48:43,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-04 14:48:43,434 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 14:48:43,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:43,435 INFO L85 PathProgramCache]: Analyzing trace with hash -193269599, now seen corresponding path program 2 times [2024-06-04 14:48:43,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:43,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359804902] [2024-06-04 14:48:43,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:43,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:44,460 INFO 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 14:48:44,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:44,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359804902] [2024-06-04 14:48:44,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359804902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:44,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:44,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:48:44,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408162288] [2024-06-04 14:48:44,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:44,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:48:44,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:44,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:48:44,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:48:44,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:48:44,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 512 transitions, 4813 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:44,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:44,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:48:44,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:45,269 INFO L124 PetriNetUnfolderBase]: 1411/2558 cut-off events. [2024-06-04 14:48:45,269 INFO L125 PetriNetUnfolderBase]: For 552220/552220 co-relation queries the response was YES. [2024-06-04 14:48:45,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17767 conditions, 2558 events. 1411/2558 cut-off events. For 552220/552220 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 16187 event pairs, 140 based on Foata normal form. 2/2559 useless extension candidates. Maximal degree in co-relation 17531. Up to 1688 conditions per place. [2024-06-04 14:48:45,312 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 337 selfloop transitions, 195 changer transitions 0/534 dead transitions. [2024-06-04 14:48:45,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 534 transitions, 5949 flow [2024-06-04 14:48:45,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:48:45,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:48:45,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-04 14:48:45,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-04 14:48:45,313 INFO L175 Difference]: Start difference. First operand has 533 places, 512 transitions, 4813 flow. Second operand 12 states and 150 transitions. [2024-06-04 14:48:45,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 534 transitions, 5949 flow [2024-06-04 14:48:48,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 534 transitions, 5548 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 14:48:48,218 INFO L231 Difference]: Finished difference. Result has 536 places, 513 transitions, 4823 flow [2024-06-04 14:48:48,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4412, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4823, PETRI_PLACES=536, PETRI_TRANSITIONS=513} [2024-06-04 14:48:48,219 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 504 predicate places. [2024-06-04 14:48:48,219 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 513 transitions, 4823 flow [2024-06-04 14:48:48,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:48,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:48,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:48:48,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-04 14:48:48,220 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 14:48:48,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:48,220 INFO L85 PathProgramCache]: Analyzing trace with hash -607757929, now seen corresponding path program 3 times [2024-06-04 14:48:48,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:48,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265205135] [2024-06-04 14:48:48,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:48,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:48:49,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:49,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265205135] [2024-06-04 14:48:49,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265205135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:49,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:49,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:48:49,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066420931] [2024-06-04 14:48:49,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:49,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:48:49,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:49,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:48:49,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:48:49,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:48:49,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 513 transitions, 4823 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:49,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:49,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:48:49,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:50,551 INFO L124 PetriNetUnfolderBase]: 1427/2590 cut-off events. [2024-06-04 14:48:50,552 INFO L125 PetriNetUnfolderBase]: For 559257/559257 co-relation queries the response was YES. [2024-06-04 14:48:50,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17922 conditions, 2590 events. 1427/2590 cut-off events. For 559257/559257 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 16481 event pairs, 277 based on Foata normal form. 2/2591 useless extension candidates. Maximal degree in co-relation 17685. Up to 2011 conditions per place. [2024-06-04 14:48:50,592 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 444 selfloop transitions, 129 changer transitions 0/575 dead transitions. [2024-06-04 14:48:50,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 575 transitions, 6256 flow [2024-06-04 14:48:50,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:48:50,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:48:50,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-06-04 14:48:50,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358974358974359 [2024-06-04 14:48:50,594 INFO L175 Difference]: Start difference. First operand has 536 places, 513 transitions, 4823 flow. Second operand 13 states and 154 transitions. [2024-06-04 14:48:50,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 575 transitions, 6256 flow [2024-06-04 14:48:53,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 575 transitions, 5799 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-04 14:48:53,517 INFO L231 Difference]: Finished difference. Result has 541 places, 520 transitions, 4714 flow [2024-06-04 14:48:53,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4389, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4714, PETRI_PLACES=541, PETRI_TRANSITIONS=520} [2024-06-04 14:48:53,517 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 509 predicate places. [2024-06-04 14:48:53,518 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 520 transitions, 4714 flow [2024-06-04 14:48:53,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:53,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:53,518 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 14:48:53,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-04 14:48:53,518 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 14:48:53,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:53,518 INFO L85 PathProgramCache]: Analyzing trace with hash -614259993, now seen corresponding path program 14 times [2024-06-04 14:48:53,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:53,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958937329] [2024-06-04 14:48:53,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:53,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:54,731 INFO 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 14:48:54,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:54,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958937329] [2024-06-04 14:48:54,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958937329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:54,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:54,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:48:54,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911849004] [2024-06-04 14:48:54,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:54,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:48:54,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:54,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:48:54,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:48:54,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:48:54,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 520 transitions, 4714 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:54,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:54,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:48:54,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:48:55,795 INFO L124 PetriNetUnfolderBase]: 1455/2646 cut-off events. [2024-06-04 14:48:55,796 INFO L125 PetriNetUnfolderBase]: For 694532/694532 co-relation queries the response was YES. [2024-06-04 14:48:55,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18141 conditions, 2646 events. 1455/2646 cut-off events. For 694532/694532 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 16840 event pairs, 138 based on Foata normal form. 10/2655 useless extension candidates. Maximal degree in co-relation 17901. Up to 1720 conditions per place. [2024-06-04 14:48:55,839 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 341 selfloop transitions, 195 changer transitions 14/552 dead transitions. [2024-06-04 14:48:55,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 552 transitions, 6038 flow [2024-06-04 14:48:55,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:48:55,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:48:55,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-04 14:48:55,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-04 14:48:55,840 INFO L175 Difference]: Start difference. First operand has 541 places, 520 transitions, 4714 flow. Second operand 13 states and 165 transitions. [2024-06-04 14:48:55,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 552 transitions, 6038 flow [2024-06-04 14:48:58,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 552 transitions, 5787 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 14:48:58,770 INFO L231 Difference]: Finished difference. Result has 548 places, 518 transitions, 4840 flow [2024-06-04 14:48:58,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4463, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4840, PETRI_PLACES=548, PETRI_TRANSITIONS=518} [2024-06-04 14:48:58,770 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 516 predicate places. [2024-06-04 14:48:58,770 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 518 transitions, 4840 flow [2024-06-04 14:48:58,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:58,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:48:58,770 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 14:48:58,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-04 14:48:58,771 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 14:48:58,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:48:58,771 INFO L85 PathProgramCache]: Analyzing trace with hash -614437623, now seen corresponding path program 15 times [2024-06-04 14:48:58,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:48:58,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750546361] [2024-06-04 14:48:58,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:48:58,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:48:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:48:59,804 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 14:48:59,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:48:59,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750546361] [2024-06-04 14:48:59,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750546361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:48:59,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:48:59,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:48:59,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871845034] [2024-06-04 14:48:59,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:48:59,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:48:59,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:48:59,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:48:59,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:48:59,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:48:59,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 518 transitions, 4840 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:48:59,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:48:59,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:48:59,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:00,863 INFO L124 PetriNetUnfolderBase]: 1460/2669 cut-off events. [2024-06-04 14:49:00,863 INFO L125 PetriNetUnfolderBase]: For 835007/835007 co-relation queries the response was YES. [2024-06-04 14:49:00,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20345 conditions, 2669 events. 1460/2669 cut-off events. For 835007/835007 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 17019 event pairs, 147 based on Foata normal form. 8/2676 useless extension candidates. Maximal degree in co-relation 20103. Up to 1602 conditions per place. [2024-06-04 14:49:00,907 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 323 selfloop transitions, 217 changer transitions 8/550 dead transitions. [2024-06-04 14:49:00,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 550 transitions, 6556 flow [2024-06-04 14:49:00,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:49:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:49:00,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 171 transitions. [2024-06-04 14:49:00,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3986013986013986 [2024-06-04 14:49:00,908 INFO L175 Difference]: Start difference. First operand has 548 places, 518 transitions, 4840 flow. Second operand 13 states and 171 transitions. [2024-06-04 14:49:00,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 550 transitions, 6556 flow [2024-06-04 14:49:04,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 550 transitions, 6154 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 14:49:04,225 INFO L231 Difference]: Finished difference. Result has 547 places, 515 transitions, 4849 flow [2024-06-04 14:49:04,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4440, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4849, PETRI_PLACES=547, PETRI_TRANSITIONS=515} [2024-06-04 14:49:04,225 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 515 predicate places. [2024-06-04 14:49:04,226 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 515 transitions, 4849 flow [2024-06-04 14:49:04,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:04,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:04,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:04,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-04 14:49:04,226 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 14:49:04,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:04,226 INFO L85 PathProgramCache]: Analyzing trace with hash 246868239, now seen corresponding path program 16 times [2024-06-04 14:49:04,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:04,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615475598] [2024-06-04 14:49:04,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:04,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:05,270 INFO 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 14:49:05,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:05,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615475598] [2024-06-04 14:49:05,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615475598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:05,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:05,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:49:05,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605003665] [2024-06-04 14:49:05,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:05,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:49:05,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:05,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:49:05,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:49:05,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:49:05,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 515 transitions, 4849 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:05,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:05,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:49:05,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:06,255 INFO L124 PetriNetUnfolderBase]: 1456/2665 cut-off events. [2024-06-04 14:49:06,255 INFO L125 PetriNetUnfolderBase]: For 870584/870584 co-relation queries the response was YES. [2024-06-04 14:49:06,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20466 conditions, 2665 events. 1456/2665 cut-off events. For 870584/870584 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 17018 event pairs, 145 based on Foata normal form. 10/2674 useless extension candidates. Maximal degree in co-relation 20225. Up to 1673 conditions per place. [2024-06-04 14:49:06,312 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 315 selfloop transitions, 211 changer transitions 15/543 dead transitions. [2024-06-04 14:49:06,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 543 transitions, 6119 flow [2024-06-04 14:49:06,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:49:06,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:49:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-04 14:49:06,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916083916083916 [2024-06-04 14:49:06,317 INFO L175 Difference]: Start difference. First operand has 547 places, 515 transitions, 4849 flow. Second operand 13 states and 168 transitions. [2024-06-04 14:49:06,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 543 transitions, 6119 flow [2024-06-04 14:49:09,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 543 transitions, 5689 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:49:09,761 INFO L231 Difference]: Finished difference. Result has 546 places, 508 transitions, 4772 flow [2024-06-04 14:49:09,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4419, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4772, PETRI_PLACES=546, PETRI_TRANSITIONS=508} [2024-06-04 14:49:09,762 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 514 predicate places. [2024-06-04 14:49:09,762 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 508 transitions, 4772 flow [2024-06-04 14:49:09,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:09,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:09,762 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 14:49:09,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-04 14:49:09,763 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 14:49:09,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:09,763 INFO L85 PathProgramCache]: Analyzing trace with hash 253297329, now seen corresponding path program 17 times [2024-06-04 14:49:09,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:09,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102630127] [2024-06-04 14:49:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:09,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:11,102 INFO 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 14:49:11,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:11,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102630127] [2024-06-04 14:49:11,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102630127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:11,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:11,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:49:11,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258766114] [2024-06-04 14:49:11,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:11,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:49:11,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:11,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:49:11,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:49:11,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:49:11,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 508 transitions, 4772 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:11,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:11,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:49:11,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:12,228 INFO L124 PetriNetUnfolderBase]: 1409/2576 cut-off events. [2024-06-04 14:49:12,228 INFO L125 PetriNetUnfolderBase]: For 696020/696020 co-relation queries the response was YES. [2024-06-04 14:49:12,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17973 conditions, 2576 events. 1409/2576 cut-off events. For 696020/696020 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 16400 event pairs, 142 based on Foata normal form. 10/2585 useless extension candidates. Maximal degree in co-relation 17733. Up to 1650 conditions per place. [2024-06-04 14:49:12,266 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 328 selfloop transitions, 191 changer transitions 14/535 dead transitions. [2024-06-04 14:49:12,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 535 transitions, 6022 flow [2024-06-04 14:49:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:49:12,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:49:12,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-04 14:49:12,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776223776223776 [2024-06-04 14:49:12,267 INFO L175 Difference]: Start difference. First operand has 546 places, 508 transitions, 4772 flow. Second operand 13 states and 162 transitions. [2024-06-04 14:49:12,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 535 transitions, 6022 flow [2024-06-04 14:49:15,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 535 transitions, 5592 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 14:49:15,113 INFO L231 Difference]: Finished difference. Result has 542 places, 502 transitions, 4667 flow [2024-06-04 14:49:15,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4342, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4667, PETRI_PLACES=542, PETRI_TRANSITIONS=502} [2024-06-04 14:49:15,113 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 510 predicate places. [2024-06-04 14:49:15,114 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 502 transitions, 4667 flow [2024-06-04 14:49:15,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:15,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:15,114 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 14:49:15,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-04 14:49:15,114 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 14:49:15,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:15,114 INFO L85 PathProgramCache]: Analyzing trace with hash 8025061, now seen corresponding path program 18 times [2024-06-04 14:49:15,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:15,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172993501] [2024-06-04 14:49:15,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:15,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:16,113 INFO 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 14:49:16,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:16,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172993501] [2024-06-04 14:49:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172993501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:16,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:16,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:49:16,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893836853] [2024-06-04 14:49:16,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:16,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:49:16,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:49:16,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:49:16,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:49:16,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 502 transitions, 4667 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:16,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:16,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:49:16,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:17,164 INFO L124 PetriNetUnfolderBase]: 1414/2599 cut-off events. [2024-06-04 14:49:17,164 INFO L125 PetriNetUnfolderBase]: For 817020/817020 co-relation queries the response was YES. [2024-06-04 14:49:17,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19869 conditions, 2599 events. 1414/2599 cut-off events. For 817020/817020 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 16592 event pairs, 165 based on Foata normal form. 8/2606 useless extension candidates. Maximal degree in co-relation 19644. Up to 1557 conditions per place. [2024-06-04 14:49:17,223 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 342 selfloop transitions, 182 changer transitions 7/533 dead transitions. [2024-06-04 14:49:17,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 533 transitions, 6343 flow [2024-06-04 14:49:17,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:49:17,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:49:17,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 173 transitions. [2024-06-04 14:49:17,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40326340326340326 [2024-06-04 14:49:17,225 INFO L175 Difference]: Start difference. First operand has 542 places, 502 transitions, 4667 flow. Second operand 13 states and 173 transitions. [2024-06-04 14:49:17,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 533 transitions, 6343 flow [2024-06-04 14:49:20,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 533 transitions, 5953 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:49:20,697 INFO L231 Difference]: Finished difference. Result has 538 places, 500 transitions, 4636 flow [2024-06-04 14:49:20,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4281, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4636, PETRI_PLACES=538, PETRI_TRANSITIONS=500} [2024-06-04 14:49:20,698 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 506 predicate places. [2024-06-04 14:49:20,698 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 500 transitions, 4636 flow [2024-06-04 14:49:20,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:20,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:20,698 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 14:49:20,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-04 14:49:20,698 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 14:49:20,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:20,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1576819637, now seen corresponding path program 4 times [2024-06-04 14:49:20,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:20,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911382047] [2024-06-04 14:49:20,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:20,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:21,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:21,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:21,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911382047] [2024-06-04 14:49:21,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911382047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:21,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:21,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:49:21,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290828724] [2024-06-04 14:49:21,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:21,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:49:21,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:21,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:49:21,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:49:22,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:49:22,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 500 transitions, 4636 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:22,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:22,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:49:22,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:22,853 INFO L124 PetriNetUnfolderBase]: 1412/2589 cut-off events. [2024-06-04 14:49:22,854 INFO L125 PetriNetUnfolderBase]: For 714334/714334 co-relation queries the response was YES. [2024-06-04 14:49:22,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19793 conditions, 2589 events. 1412/2589 cut-off events. For 714334/714334 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 16516 event pairs, 183 based on Foata normal form. 2/2590 useless extension candidates. Maximal degree in co-relation 19569. Up to 1711 conditions per place. [2024-06-04 14:49:22,896 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 345 selfloop transitions, 177 changer transitions 0/524 dead transitions. [2024-06-04 14:49:22,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 524 transitions, 5806 flow [2024-06-04 14:49:22,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:49:22,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:49:22,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-04 14:49:22,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-04 14:49:22,897 INFO L175 Difference]: Start difference. First operand has 538 places, 500 transitions, 4636 flow. Second operand 12 states and 148 transitions. [2024-06-04 14:49:22,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 524 transitions, 5806 flow [2024-06-04 14:49:25,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 524 transitions, 5434 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:49:25,990 INFO L231 Difference]: Finished difference. Result has 536 places, 505 transitions, 4699 flow [2024-06-04 14:49:25,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4272, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4699, PETRI_PLACES=536, PETRI_TRANSITIONS=505} [2024-06-04 14:49:25,991 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 504 predicate places. [2024-06-04 14:49:25,991 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 505 transitions, 4699 flow [2024-06-04 14:49:25,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:25,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:25,991 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 14:49:25,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-04 14:49:25,991 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:49:25,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:25,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1374805937, now seen corresponding path program 5 times [2024-06-04 14:49:25,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:25,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535283027] [2024-06-04 14:49:25,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:25,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:27,105 INFO 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 14:49:27,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:27,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535283027] [2024-06-04 14:49:27,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535283027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:27,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:27,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:49:27,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512686109] [2024-06-04 14:49:27,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:27,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:49:27,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:27,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:49:27,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:49:27,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:49:27,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 505 transitions, 4699 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:27,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:27,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:49:27,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:28,030 INFO L124 PetriNetUnfolderBase]: 1416/2597 cut-off events. [2024-06-04 14:49:28,031 INFO L125 PetriNetUnfolderBase]: For 706586/706586 co-relation queries the response was YES. [2024-06-04 14:49:28,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19810 conditions, 2597 events. 1416/2597 cut-off events. For 706586/706586 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 16587 event pairs, 181 based on Foata normal form. 2/2598 useless extension candidates. Maximal degree in co-relation 19587. Up to 1719 conditions per place. [2024-06-04 14:49:28,073 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 352 selfloop transitions, 172 changer transitions 0/526 dead transitions. [2024-06-04 14:49:28,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 526 transitions, 5823 flow [2024-06-04 14:49:28,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:49:28,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:49:28,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-04 14:49:28,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-04 14:49:28,074 INFO L175 Difference]: Start difference. First operand has 536 places, 505 transitions, 4699 flow. Second operand 12 states and 151 transitions. [2024-06-04 14:49:28,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 526 transitions, 5823 flow [2024-06-04 14:49:31,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 526 transitions, 5472 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 14:49:31,139 INFO L231 Difference]: Finished difference. Result has 539 places, 506 transitions, 4719 flow [2024-06-04 14:49:31,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4348, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4719, PETRI_PLACES=539, PETRI_TRANSITIONS=506} [2024-06-04 14:49:31,139 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 507 predicate places. [2024-06-04 14:49:31,139 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 506 transitions, 4719 flow [2024-06-04 14:49:31,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:31,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:31,140 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 14:49:31,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-04 14:49:31,140 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:49:31,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:31,140 INFO L85 PathProgramCache]: Analyzing trace with hash -515248931, now seen corresponding path program 19 times [2024-06-04 14:49:31,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:31,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086182758] [2024-06-04 14:49:31,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:31,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:32,167 INFO 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 14:49:32,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:32,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086182758] [2024-06-04 14:49:32,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086182758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:32,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:32,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:49:32,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921292440] [2024-06-04 14:49:32,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:32,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:49:32,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:32,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:49:32,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:49:32,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:49:32,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 506 transitions, 4719 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:32,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:32,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:49:32,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:33,070 INFO L124 PetriNetUnfolderBase]: 1432/2633 cut-off events. [2024-06-04 14:49:33,070 INFO L125 PetriNetUnfolderBase]: For 842692/842692 co-relation queries the response was YES. [2024-06-04 14:49:33,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20102 conditions, 2633 events. 1432/2633 cut-off events. For 842692/842692 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 16861 event pairs, 175 based on Foata normal form. 10/2642 useless extension candidates. Maximal degree in co-relation 19879. Up to 1662 conditions per place. [2024-06-04 14:49:33,114 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 332 selfloop transitions, 186 changer transitions 11/531 dead transitions. [2024-06-04 14:49:33,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 531 transitions, 5955 flow [2024-06-04 14:49:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:49:33,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:49:33,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-04 14:49:33,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822843822843823 [2024-06-04 14:49:33,115 INFO L175 Difference]: Start difference. First operand has 539 places, 506 transitions, 4719 flow. Second operand 13 states and 164 transitions. [2024-06-04 14:49:33,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 531 transitions, 5955 flow [2024-06-04 14:49:36,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 531 transitions, 5587 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-04 14:49:36,468 INFO L231 Difference]: Finished difference. Result has 542 places, 503 transitions, 4711 flow [2024-06-04 14:49:36,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4351, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4711, PETRI_PLACES=542, PETRI_TRANSITIONS=503} [2024-06-04 14:49:36,469 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 510 predicate places. [2024-06-04 14:49:36,469 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 503 transitions, 4711 flow [2024-06-04 14:49:36,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:36,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:36,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:49:36,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-04 14:49:36,469 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:49:36,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:36,470 INFO L85 PathProgramCache]: Analyzing trace with hash -342348477, now seen corresponding path program 6 times [2024-06-04 14:49:36,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:36,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122228029] [2024-06-04 14:49:36,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:36,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:37,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:37,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:37,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122228029] [2024-06-04 14:49:37,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122228029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:37,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:37,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:49:37,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973591499] [2024-06-04 14:49:37,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:37,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:49:37,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:37,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:49:37,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:49:37,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:49:37,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 503 transitions, 4711 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:37,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:37,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:49:37,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:38,367 INFO L124 PetriNetUnfolderBase]: 1424/2613 cut-off events. [2024-06-04 14:49:38,367 INFO L125 PetriNetUnfolderBase]: For 722396/722396 co-relation queries the response was YES. [2024-06-04 14:49:38,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19999 conditions, 2613 events. 1424/2613 cut-off events. For 722396/722396 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 16729 event pairs, 185 based on Foata normal form. 2/2614 useless extension candidates. Maximal degree in co-relation 19775. Up to 1727 conditions per place. [2024-06-04 14:49:38,409 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 352 selfloop transitions, 174 changer transitions 0/528 dead transitions. [2024-06-04 14:49:38,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 528 transitions, 5897 flow [2024-06-04 14:49:38,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:49:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:49:38,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 14:49:38,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-04 14:49:38,411 INFO L175 Difference]: Start difference. First operand has 542 places, 503 transitions, 4711 flow. Second operand 12 states and 152 transitions. [2024-06-04 14:49:38,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 528 transitions, 5897 flow [2024-06-04 14:49:41,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 528 transitions, 5509 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:49:41,910 INFO L231 Difference]: Finished difference. Result has 539 places, 508 transitions, 4756 flow [2024-06-04 14:49:41,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4756, PETRI_PLACES=539, PETRI_TRANSITIONS=508} [2024-06-04 14:49:41,911 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 507 predicate places. [2024-06-04 14:49:41,911 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 508 transitions, 4756 flow [2024-06-04 14:49:41,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:41,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:41,911 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 14:49:41,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-04 14:49:41,911 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:49:41,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:41,912 INFO L85 PathProgramCache]: Analyzing trace with hash -349015151, now seen corresponding path program 20 times [2024-06-04 14:49:41,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:41,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642786044] [2024-06-04 14:49:41,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:41,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:49:43,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:43,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642786044] [2024-06-04 14:49:43,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642786044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:43,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:43,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:49:43,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518399475] [2024-06-04 14:49:43,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:43,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:49:43,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:43,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:49:43,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:49:43,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:49:43,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 508 transitions, 4756 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:43,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:43,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:49:43,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:44,235 INFO L124 PetriNetUnfolderBase]: 1440/2649 cut-off events. [2024-06-04 14:49:44,235 INFO L125 PetriNetUnfolderBase]: For 843248/843248 co-relation queries the response was YES. [2024-06-04 14:49:44,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20160 conditions, 2649 events. 1440/2649 cut-off events. For 843248/843248 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 16998 event pairs, 179 based on Foata normal form. 10/2658 useless extension candidates. Maximal degree in co-relation 19937. Up to 1650 conditions per place. [2024-06-04 14:49:44,277 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 334 selfloop transitions, 186 changer transitions 13/535 dead transitions. [2024-06-04 14:49:44,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 535 transitions, 6004 flow [2024-06-04 14:49:44,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:49:44,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:49:44,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 170 transitions. [2024-06-04 14:49:44,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962703962703963 [2024-06-04 14:49:44,278 INFO L175 Difference]: Start difference. First operand has 539 places, 508 transitions, 4756 flow. Second operand 13 states and 170 transitions. [2024-06-04 14:49:44,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 535 transitions, 6004 flow [2024-06-04 14:49:47,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 535 transitions, 5614 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 14:49:47,649 INFO L231 Difference]: Finished difference. Result has 543 places, 503 transitions, 4695 flow [2024-06-04 14:49:47,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4366, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4695, PETRI_PLACES=543, PETRI_TRANSITIONS=503} [2024-06-04 14:49:47,650 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 511 predicate places. [2024-06-04 14:49:47,650 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 503 transitions, 4695 flow [2024-06-04 14:49:47,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:47,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:47,650 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 14:49:47,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-04 14:49:47,651 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:49:47,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:47,651 INFO L85 PathProgramCache]: Analyzing trace with hash -342340107, now seen corresponding path program 7 times [2024-06-04 14:49:47,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:47,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554087793] [2024-06-04 14:49:47,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:47,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:48,943 INFO 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 14:49:48,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:48,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554087793] [2024-06-04 14:49:48,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554087793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:48,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:48,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:49:48,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411815950] [2024-06-04 14:49:48,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:48,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:49:48,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:48,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:49:48,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:49:49,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:49:49,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 503 transitions, 4695 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:49,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:49,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:49:49,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:49,794 INFO L124 PetriNetUnfolderBase]: 1432/2633 cut-off events. [2024-06-04 14:49:49,794 INFO L125 PetriNetUnfolderBase]: For 756364/756364 co-relation queries the response was YES. [2024-06-04 14:49:49,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20365 conditions, 2633 events. 1432/2633 cut-off events. For 756364/756364 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 16946 event pairs, 328 based on Foata normal form. 2/2634 useless extension candidates. Maximal degree in co-relation 20141. Up to 2043 conditions per place. [2024-06-04 14:49:49,838 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 447 selfloop transitions, 114 changer transitions 0/563 dead transitions. [2024-06-04 14:49:49,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 563 transitions, 6471 flow [2024-06-04 14:49:49,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:49:49,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:49:49,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-04 14:49:49,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.372960372960373 [2024-06-04 14:49:49,839 INFO L175 Difference]: Start difference. First operand has 543 places, 503 transitions, 4695 flow. Second operand 13 states and 160 transitions. [2024-06-04 14:49:49,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 563 transitions, 6471 flow [2024-06-04 14:49:53,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 563 transitions, 6061 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-04 14:49:53,087 INFO L231 Difference]: Finished difference. Result has 542 places, 511 transitions, 4644 flow [2024-06-04 14:49:53,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4302, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4644, PETRI_PLACES=542, PETRI_TRANSITIONS=511} [2024-06-04 14:49:53,088 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 510 predicate places. [2024-06-04 14:49:53,088 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 511 transitions, 4644 flow [2024-06-04 14:49:53,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:53,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:53,088 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 14:49:53,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-04 14:49:53,089 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:49:53,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:53,089 INFO L85 PathProgramCache]: Analyzing trace with hash -515253581, now seen corresponding path program 21 times [2024-06-04 14:49:53,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:53,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282928488] [2024-06-04 14:49:53,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:53,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:49:54,127 INFO 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 14:49:54,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:49:54,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282928488] [2024-06-04 14:49:54,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282928488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:49:54,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:49:54,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:49:54,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39950230] [2024-06-04 14:49:54,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:49:54,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:49:54,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:49:54,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:49:54,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:49:54,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:49:54,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 511 transitions, 4644 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:54,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:49:54,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:49:54,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:49:55,126 INFO L124 PetriNetUnfolderBase]: 1444/2661 cut-off events. [2024-06-04 14:49:55,126 INFO L125 PetriNetUnfolderBase]: For 842242/842242 co-relation queries the response was YES. [2024-06-04 14:49:55,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20312 conditions, 2661 events. 1444/2661 cut-off events. For 842242/842242 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 17124 event pairs, 174 based on Foata normal form. 8/2668 useless extension candidates. Maximal degree in co-relation 20087. Up to 1692 conditions per place. [2024-06-04 14:49:55,169 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 334 selfloop transitions, 184 changer transitions 15/535 dead transitions. [2024-06-04 14:49:55,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 535 transitions, 5824 flow [2024-06-04 14:49:55,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:49:55,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:49:55,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-04 14:49:55,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3752913752913753 [2024-06-04 14:49:55,170 INFO L175 Difference]: Start difference. First operand has 542 places, 511 transitions, 4644 flow. Second operand 13 states and 161 transitions. [2024-06-04 14:49:55,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 535 transitions, 5824 flow [2024-06-04 14:49:58,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 535 transitions, 5771 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-04 14:49:58,783 INFO L231 Difference]: Finished difference. Result has 551 places, 505 transitions, 4907 flow [2024-06-04 14:49:58,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4591, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4907, PETRI_PLACES=551, PETRI_TRANSITIONS=505} [2024-06-04 14:49:58,784 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 519 predicate places. [2024-06-04 14:49:58,784 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 505 transitions, 4907 flow [2024-06-04 14:49:58,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:49:58,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:49:58,784 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 14:49:58,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-04 14:49:58,784 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:49:58,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:49:58,785 INFO L85 PathProgramCache]: Analyzing trace with hash 14458801, now seen corresponding path program 22 times [2024-06-04 14:49:58,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:49:58,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228193882] [2024-06-04 14:49:58,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:49:58,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:49:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:00,073 INFO 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 14:50:00,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:00,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228193882] [2024-06-04 14:50:00,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228193882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:00,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:00,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:50:00,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928188986] [2024-06-04 14:50:00,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:00,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:50:00,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:00,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:50:00,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:50:00,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:50:00,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 505 transitions, 4907 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:00,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:00,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:50:00,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:01,307 INFO L124 PetriNetUnfolderBase]: 1443/2658 cut-off events. [2024-06-04 14:50:01,307 INFO L125 PetriNetUnfolderBase]: For 887555/887555 co-relation queries the response was YES. [2024-06-04 14:50:01,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20811 conditions, 2658 events. 1443/2658 cut-off events. For 887555/887555 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 17111 event pairs, 190 based on Foata normal form. 10/2667 useless extension candidates. Maximal degree in co-relation 20584. Up to 1732 conditions per place. [2024-06-04 14:50:01,342 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 350 selfloop transitions, 169 changer transitions 12/533 dead transitions. [2024-06-04 14:50:01,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 533 transitions, 6153 flow [2024-06-04 14:50:01,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:50:01,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:50:01,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-04 14:50:01,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822843822843823 [2024-06-04 14:50:01,344 INFO L175 Difference]: Start difference. First operand has 551 places, 505 transitions, 4907 flow. Second operand 13 states and 164 transitions. [2024-06-04 14:50:01,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 533 transitions, 6153 flow [2024-06-04 14:50:05,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 533 transitions, 5779 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:50:05,022 INFO L231 Difference]: Finished difference. Result has 547 places, 503 transitions, 4849 flow [2024-06-04 14:50:05,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4533, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4849, PETRI_PLACES=547, PETRI_TRANSITIONS=503} [2024-06-04 14:50:05,023 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 515 predicate places. [2024-06-04 14:50:05,023 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 503 transitions, 4849 flow [2024-06-04 14:50:05,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:05,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:05,024 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 14:50:05,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-04 14:50:05,024 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:50:05,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:05,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1725184125, now seen corresponding path program 23 times [2024-06-04 14:50:05,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:05,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027252919] [2024-06-04 14:50:05,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:05,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:06,053 INFO 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 14:50:06,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:06,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027252919] [2024-06-04 14:50:06,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027252919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:06,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:06,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:50:06,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530404691] [2024-06-04 14:50:06,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:06,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:50:06,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:06,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:50:06,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:50:06,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:50:06,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 503 transitions, 4849 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:06,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:06,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:50:06,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:07,123 INFO L124 PetriNetUnfolderBase]: 1429/2640 cut-off events. [2024-06-04 14:50:07,123 INFO L125 PetriNetUnfolderBase]: For 877592/877592 co-relation queries the response was YES. [2024-06-04 14:50:07,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20602 conditions, 2640 events. 1429/2640 cut-off events. For 877592/877592 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 16988 event pairs, 176 based on Foata normal form. 10/2649 useless extension candidates. Maximal degree in co-relation 20376. Up to 1639 conditions per place. [2024-06-04 14:50:07,165 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 330 selfloop transitions, 186 changer transitions 11/529 dead transitions. [2024-06-04 14:50:07,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 529 transitions, 6077 flow [2024-06-04 14:50:07,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:50:07,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:50:07,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-04 14:50:07,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38694638694638694 [2024-06-04 14:50:07,167 INFO L175 Difference]: Start difference. First operand has 547 places, 503 transitions, 4849 flow. Second operand 13 states and 166 transitions. [2024-06-04 14:50:07,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 529 transitions, 6077 flow [2024-06-04 14:50:10,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 529 transitions, 5733 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 14:50:10,974 INFO L231 Difference]: Finished difference. Result has 546 places, 500 transitions, 4864 flow [2024-06-04 14:50:10,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4505, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4864, PETRI_PLACES=546, PETRI_TRANSITIONS=500} [2024-06-04 14:50:10,974 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 514 predicate places. [2024-06-04 14:50:10,975 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 500 transitions, 4864 flow [2024-06-04 14:50:10,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:10,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:10,975 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 14:50:10,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-04 14:50:10,975 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:50:10,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:10,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1961547779, now seen corresponding path program 8 times [2024-06-04 14:50:10,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:10,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777119092] [2024-06-04 14:50:10,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:10,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:12,323 INFO 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 14:50:12,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:12,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777119092] [2024-06-04 14:50:12,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777119092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:12,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:12,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:50:12,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478408533] [2024-06-04 14:50:12,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:12,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:50:12,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:12,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:50:12,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:50:12,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:50:12,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 500 transitions, 4864 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:12,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:12,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:50:12,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:13,326 INFO L124 PetriNetUnfolderBase]: 1452/2689 cut-off events. [2024-06-04 14:50:13,326 INFO L125 PetriNetUnfolderBase]: For 1000924/1000924 co-relation queries the response was YES. [2024-06-04 14:50:13,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22823 conditions, 2689 events. 1452/2689 cut-off events. For 1000924/1000924 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 17357 event pairs, 194 based on Foata normal form. 8/2696 useless extension candidates. Maximal degree in co-relation 22598. Up to 1623 conditions per place. [2024-06-04 14:50:13,372 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 337 selfloop transitions, 186 changer transitions 8/533 dead transitions. [2024-06-04 14:50:13,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 533 transitions, 6562 flow [2024-06-04 14:50:13,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:50:13,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:50:13,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 177 transitions. [2024-06-04 14:50:13,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2024-06-04 14:50:13,373 INFO L175 Difference]: Start difference. First operand has 546 places, 500 transitions, 4864 flow. Second operand 14 states and 177 transitions. [2024-06-04 14:50:13,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 533 transitions, 6562 flow [2024-06-04 14:50:18,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 533 transitions, 6168 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-04 14:50:18,114 INFO L231 Difference]: Finished difference. Result has 545 places, 499 transitions, 4838 flow [2024-06-04 14:50:18,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4484, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4838, PETRI_PLACES=545, PETRI_TRANSITIONS=499} [2024-06-04 14:50:18,114 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 513 predicate places. [2024-06-04 14:50:18,114 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 499 transitions, 4838 flow [2024-06-04 14:50:18,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:18,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:18,115 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 14:50:18,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-04 14:50:18,115 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:50:18,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:18,116 INFO L85 PathProgramCache]: Analyzing trace with hash 8209635, now seen corresponding path program 9 times [2024-06-04 14:50:18,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:18,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120205190] [2024-06-04 14:50:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:18,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:19,211 INFO 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 14:50:19,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:19,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120205190] [2024-06-04 14:50:19,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120205190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:19,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:19,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:50:19,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077110053] [2024-06-04 14:50:19,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:19,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:50:19,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:19,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:50:19,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:50:19,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:50:19,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 499 transitions, 4838 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:19,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:19,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:50:19,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:20,148 INFO L124 PetriNetUnfolderBase]: 1433/2652 cut-off events. [2024-06-04 14:50:20,148 INFO L125 PetriNetUnfolderBase]: For 901715/901715 co-relation queries the response was YES. [2024-06-04 14:50:20,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22098 conditions, 2652 events. 1433/2652 cut-off events. For 901715/901715 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 17155 event pairs, 206 based on Foata normal form. 4/2655 useless extension candidates. Maximal degree in co-relation 21874. Up to 1768 conditions per place. [2024-06-04 14:50:20,191 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 351 selfloop transitions, 168 changer transitions 0/521 dead transitions. [2024-06-04 14:50:20,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 521 transitions, 5962 flow [2024-06-04 14:50:20,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:50:20,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:50:20,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 14:50:20,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-04 14:50:20,193 INFO L175 Difference]: Start difference. First operand has 545 places, 499 transitions, 4838 flow. Second operand 12 states and 152 transitions. [2024-06-04 14:50:20,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 521 transitions, 5962 flow [2024-06-04 14:50:24,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 521 transitions, 5579 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-04 14:50:24,412 INFO L231 Difference]: Finished difference. Result has 543 places, 500 transitions, 4825 flow [2024-06-04 14:50:24,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4455, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4825, PETRI_PLACES=543, PETRI_TRANSITIONS=500} [2024-06-04 14:50:24,412 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 511 predicate places. [2024-06-04 14:50:24,412 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 500 transitions, 4825 flow [2024-06-04 14:50:24,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:24,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:24,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:50:24,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-04 14:50:24,413 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:50:24,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:24,414 INFO L85 PathProgramCache]: Analyzing trace with hash -348842171, now seen corresponding path program 24 times [2024-06-04 14:50:24,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:24,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703339789] [2024-06-04 14:50:24,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:24,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:25,697 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 14:50:25,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:25,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703339789] [2024-06-04 14:50:25,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703339789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:25,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:25,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:50:25,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516576729] [2024-06-04 14:50:25,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:25,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:50:25,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:25,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:50:25,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:50:25,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:50:25,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 500 transitions, 4825 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:25,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:25,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:50:25,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:26,789 INFO L124 PetriNetUnfolderBase]: 1420/2629 cut-off events. [2024-06-04 14:50:26,789 INFO L125 PetriNetUnfolderBase]: For 826764/826764 co-relation queries the response was YES. [2024-06-04 14:50:26,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20066 conditions, 2629 events. 1420/2629 cut-off events. For 826764/826764 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 16994 event pairs, 191 based on Foata normal form. 10/2638 useless extension candidates. Maximal degree in co-relation 19844. Up to 1703 conditions per place. [2024-06-04 14:50:26,830 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 349 selfloop transitions, 164 changer transitions 12/527 dead transitions. [2024-06-04 14:50:26,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 527 transitions, 6049 flow [2024-06-04 14:50:26,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:50:26,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:50:26,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-04 14:50:26,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-04 14:50:26,832 INFO L175 Difference]: Start difference. First operand has 543 places, 500 transitions, 4825 flow. Second operand 13 states and 165 transitions. [2024-06-04 14:50:26,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 527 transitions, 6049 flow [2024-06-04 14:50:30,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 527 transitions, 5680 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-04 14:50:30,470 INFO L231 Difference]: Finished difference. Result has 545 places, 496 transitions, 4746 flow [2024-06-04 14:50:30,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4456, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4746, PETRI_PLACES=545, PETRI_TRANSITIONS=496} [2024-06-04 14:50:30,471 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 513 predicate places. [2024-06-04 14:50:30,471 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 496 transitions, 4746 flow [2024-06-04 14:50:30,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:30,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:30,471 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 14:50:30,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-04 14:50:30,471 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:50:30,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:30,472 INFO L85 PathProgramCache]: Analyzing trace with hash -519837551, now seen corresponding path program 25 times [2024-06-04 14:50:30,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:30,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541728743] [2024-06-04 14:50:30,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:30,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:31,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:31,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541728743] [2024-06-04 14:50:31,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541728743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:31,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:31,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:50:31,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122056753] [2024-06-04 14:50:31,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:31,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:50:31,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:31,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:50:31,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:50:31,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:50:31,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 496 transitions, 4746 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:31,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:31,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:50:31,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:32,769 INFO L124 PetriNetUnfolderBase]: 1438/2675 cut-off events. [2024-06-04 14:50:32,769 INFO L125 PetriNetUnfolderBase]: For 993872/993872 co-relation queries the response was YES. [2024-06-04 14:50:32,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22493 conditions, 2675 events. 1438/2675 cut-off events. For 993872/993872 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 17334 event pairs, 203 based on Foata normal form. 8/2682 useless extension candidates. Maximal degree in co-relation 22270. Up to 1209 conditions per place. [2024-06-04 14:50:32,815 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 326 selfloop transitions, 188 changer transitions 10/526 dead transitions. [2024-06-04 14:50:32,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 526 transitions, 6406 flow [2024-06-04 14:50:32,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:50:32,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:50:32,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-04 14:50:32,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 14:50:32,816 INFO L175 Difference]: Start difference. First operand has 545 places, 496 transitions, 4746 flow. Second operand 12 states and 162 transitions. [2024-06-04 14:50:32,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 526 transitions, 6406 flow [2024-06-04 14:50:37,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 526 transitions, 6047 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-04 14:50:37,054 INFO L231 Difference]: Finished difference. Result has 540 places, 493 transitions, 4762 flow [2024-06-04 14:50:37,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4397, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4762, PETRI_PLACES=540, PETRI_TRANSITIONS=493} [2024-06-04 14:50:37,055 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 508 predicate places. [2024-06-04 14:50:37,055 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 493 transitions, 4762 flow [2024-06-04 14:50:37,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:37,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:37,055 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 14:50:37,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-04 14:50:37,055 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:50:37,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:37,056 INFO L85 PathProgramCache]: Analyzing trace with hash -519717581, now seen corresponding path program 26 times [2024-06-04 14:50:37,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:37,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203438725] [2024-06-04 14:50:37,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:37,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:38,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:38,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203438725] [2024-06-04 14:50:38,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203438725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:38,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:38,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:50:38,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631716811] [2024-06-04 14:50:38,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:38,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:50:38,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:38,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:50:38,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:50:38,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:50:38,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 493 transitions, 4762 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:38,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:38,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:50:38,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:39,262 INFO L124 PetriNetUnfolderBase]: 1432/2665 cut-off events. [2024-06-04 14:50:39,262 INFO L125 PetriNetUnfolderBase]: For 1017200/1017200 co-relation queries the response was YES. [2024-06-04 14:50:39,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22482 conditions, 2665 events. 1432/2665 cut-off events. For 1017200/1017200 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 17298 event pairs, 205 based on Foata normal form. 10/2674 useless extension candidates. Maximal degree in co-relation 22260. Up to 1700 conditions per place. [2024-06-04 14:50:39,306 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 335 selfloop transitions, 171 changer transitions 11/519 dead transitions. [2024-06-04 14:50:39,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 519 transitions, 5962 flow [2024-06-04 14:50:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:50:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:50:39,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-04 14:50:39,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822843822843823 [2024-06-04 14:50:39,307 INFO L175 Difference]: Start difference. First operand has 540 places, 493 transitions, 4762 flow. Second operand 13 states and 164 transitions. [2024-06-04 14:50:39,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 519 transitions, 5962 flow [2024-06-04 14:50:43,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 519 transitions, 5598 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:50:43,339 INFO L231 Difference]: Finished difference. Result has 538 places, 490 transitions, 4727 flow [2024-06-04 14:50:43,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4398, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4727, PETRI_PLACES=538, PETRI_TRANSITIONS=490} [2024-06-04 14:50:43,340 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 506 predicate places. [2024-06-04 14:50:43,340 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 490 transitions, 4727 flow [2024-06-04 14:50:43,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:43,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:43,341 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 14:50:43,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-04 14:50:43,341 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:50:43,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:43,341 INFO L85 PathProgramCache]: Analyzing trace with hash -519722231, now seen corresponding path program 27 times [2024-06-04 14:50:43,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:43,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383806038] [2024-06-04 14:50:43,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:43,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:44,684 INFO 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 14:50:44,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:44,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383806038] [2024-06-04 14:50:44,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383806038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:44,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:44,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:50:44,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751331718] [2024-06-04 14:50:44,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:44,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:50:44,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:44,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:50:44,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:50:44,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:50:44,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 490 transitions, 4727 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:44,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:44,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:50:44,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:45,918 INFO L124 PetriNetUnfolderBase]: 1420/2645 cut-off events. [2024-06-04 14:50:45,919 INFO L125 PetriNetUnfolderBase]: For 963188/963188 co-relation queries the response was YES. [2024-06-04 14:50:45,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22222 conditions, 2645 events. 1420/2645 cut-off events. For 963188/963188 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 17170 event pairs, 205 based on Foata normal form. 8/2652 useless extension candidates. Maximal degree in co-relation 22002. Up to 1430 conditions per place. [2024-06-04 14:50:45,961 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 313 selfloop transitions, 184 changer transitions 14/513 dead transitions. [2024-06-04 14:50:45,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 513 transitions, 5857 flow [2024-06-04 14:50:45,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:50:45,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:50:45,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-04 14:50:45,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 14:50:45,962 INFO L175 Difference]: Start difference. First operand has 538 places, 490 transitions, 4727 flow. Second operand 12 states and 154 transitions. [2024-06-04 14:50:45,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 513 transitions, 5857 flow [2024-06-04 14:50:50,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 513 transitions, 5505 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 14:50:50,183 INFO L231 Difference]: Finished difference. Result has 535 places, 484 transitions, 4701 flow [2024-06-04 14:50:50,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4377, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4701, PETRI_PLACES=535, PETRI_TRANSITIONS=484} [2024-06-04 14:50:50,183 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 503 predicate places. [2024-06-04 14:50:50,184 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 484 transitions, 4701 flow [2024-06-04 14:50:50,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:50,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:50,184 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 14:50:50,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-04 14:50:50,184 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:50:50,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:50,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1604791217, now seen corresponding path program 10 times [2024-06-04 14:50:50,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:50,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413309751] [2024-06-04 14:50:50,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:50,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:51,468 INFO 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 14:50:51,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:51,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413309751] [2024-06-04 14:50:51,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413309751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:51,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:51,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:50:51,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714073349] [2024-06-04 14:50:51,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:51,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:50:51,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:51,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:50:51,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:50:51,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:50:51,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 484 transitions, 4701 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:51,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:51,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:50:51,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:52,407 INFO L124 PetriNetUnfolderBase]: 1407/2614 cut-off events. [2024-06-04 14:50:52,407 INFO L125 PetriNetUnfolderBase]: For 895228/895228 co-relation queries the response was YES. [2024-06-04 14:50:52,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22407 conditions, 2614 events. 1407/2614 cut-off events. For 895228/895228 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 16920 event pairs, 216 based on Foata normal form. 2/2615 useless extension candidates. Maximal degree in co-relation 22188. Up to 1582 conditions per place. [2024-06-04 14:50:52,450 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 321 selfloop transitions, 183 changer transitions 0/506 dead transitions. [2024-06-04 14:50:52,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 506 transitions, 6169 flow [2024-06-04 14:50:52,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:50:52,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:50:52,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-04 14:50:52,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37626262626262624 [2024-06-04 14:50:52,451 INFO L175 Difference]: Start difference. First operand has 535 places, 484 transitions, 4701 flow. Second operand 12 states and 149 transitions. [2024-06-04 14:50:52,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 506 transitions, 6169 flow [2024-06-04 14:50:56,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 506 transitions, 5775 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-06-04 14:50:56,686 INFO L231 Difference]: Finished difference. Result has 527 places, 486 transitions, 4745 flow [2024-06-04 14:50:56,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4317, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4745, PETRI_PLACES=527, PETRI_TRANSITIONS=486} [2024-06-04 14:50:56,687 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 495 predicate places. [2024-06-04 14:50:56,687 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 486 transitions, 4745 flow [2024-06-04 14:50:56,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:56,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:50:56,687 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 14:50:56,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-04 14:50:56,687 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:50:56,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:50:56,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1596213393, now seen corresponding path program 28 times [2024-06-04 14:50:56,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:50:56,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66137189] [2024-06-04 14:50:56,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:50:56,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:50:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:50:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:50:58,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:50:58,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66137189] [2024-06-04 14:50:58,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66137189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:50:58,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:50:58,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:50:58,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140690706] [2024-06-04 14:50:58,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:50:58,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:50:58,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:50:58,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:50:58,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:50:58,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:50:58,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 486 transitions, 4745 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:50:58,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:50:58,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:50:58,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:50:59,624 INFO L124 PetriNetUnfolderBase]: 1394/2591 cut-off events. [2024-06-04 14:50:59,625 INFO L125 PetriNetUnfolderBase]: For 826459/826459 co-relation queries the response was YES. [2024-06-04 14:50:59,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20251 conditions, 2591 events. 1394/2591 cut-off events. For 826459/826459 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 16752 event pairs, 197 based on Foata normal form. 10/2600 useless extension candidates. Maximal degree in co-relation 20036. Up to 1659 conditions per place. [2024-06-04 14:50:59,666 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 324 selfloop transitions, 163 changer transitions 22/511 dead transitions. [2024-06-04 14:50:59,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 511 transitions, 5915 flow [2024-06-04 14:50:59,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:50:59,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:50:59,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-04 14:50:59,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3752913752913753 [2024-06-04 14:50:59,667 INFO L175 Difference]: Start difference. First operand has 527 places, 486 transitions, 4745 flow. Second operand 13 states and 161 transitions. [2024-06-04 14:50:59,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 511 transitions, 5915 flow [2024-06-04 14:51:02,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 511 transitions, 5671 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-04 14:51:02,801 INFO L231 Difference]: Finished difference. Result has 532 places, 476 transitions, 4725 flow [2024-06-04 14:51:02,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4501, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4725, PETRI_PLACES=532, PETRI_TRANSITIONS=476} [2024-06-04 14:51:02,802 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 500 predicate places. [2024-06-04 14:51:02,802 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 476 transitions, 4725 flow [2024-06-04 14:51:02,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:02,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:02,802 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 14:51:02,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-04 14:51:02,802 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:51:02,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:02,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1374814307, now seen corresponding path program 11 times [2024-06-04 14:51:02,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:02,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434920034] [2024-06-04 14:51:02,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:02,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:03,913 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 14:51:03,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:03,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434920034] [2024-06-04 14:51:03,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434920034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:03,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:03,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:51:03,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586067664] [2024-06-04 14:51:03,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:03,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:51:03,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:03,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:51:03,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:51:04,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:51:04,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 476 transitions, 4725 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:04,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:04,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:51:04,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:04,835 INFO L124 PetriNetUnfolderBase]: 1344/2501 cut-off events. [2024-06-04 14:51:04,836 INFO L125 PetriNetUnfolderBase]: For 717114/717114 co-relation queries the response was YES. [2024-06-04 14:51:04,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20007 conditions, 2501 events. 1344/2501 cut-off events. For 717114/717114 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 16096 event pairs, 195 based on Foata normal form. 2/2502 useless extension candidates. Maximal degree in co-relation 19790. Up to 1632 conditions per place. [2024-06-04 14:51:04,876 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 336 selfloop transitions, 160 changer transitions 0/498 dead transitions. [2024-06-04 14:51:04,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 498 transitions, 6173 flow [2024-06-04 14:51:04,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:51:04,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:51:04,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-04 14:51:04,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-04 14:51:04,878 INFO L175 Difference]: Start difference. First operand has 532 places, 476 transitions, 4725 flow. Second operand 12 states and 150 transitions. [2024-06-04 14:51:04,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 498 transitions, 6173 flow [2024-06-04 14:51:07,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 498 transitions, 5831 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-04 14:51:07,999 INFO L231 Difference]: Finished difference. Result has 525 places, 478 transitions, 4769 flow [2024-06-04 14:51:07,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4391, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4769, PETRI_PLACES=525, PETRI_TRANSITIONS=478} [2024-06-04 14:51:07,999 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 493 predicate places. [2024-06-04 14:51:08,000 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 478 transitions, 4769 flow [2024-06-04 14:51:08,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:08,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:08,000 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 14:51:08,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-04 14:51:08,000 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:51:08,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:08,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2078254205, now seen corresponding path program 29 times [2024-06-04 14:51:08,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:08,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838193543] [2024-06-04 14:51:08,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:08,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:09,142 INFO 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 14:51:09,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:09,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838193543] [2024-06-04 14:51:09,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838193543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:09,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:09,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:51:09,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978705096] [2024-06-04 14:51:09,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:09,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:51:09,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:09,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:51:09,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:51:09,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:51:09,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 478 transitions, 4769 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:09,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:09,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:51:09,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:10,119 INFO L124 PetriNetUnfolderBase]: 1366/2547 cut-off events. [2024-06-04 14:51:10,119 INFO L125 PetriNetUnfolderBase]: For 825317/825317 co-relation queries the response was YES. [2024-06-04 14:51:10,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20228 conditions, 2547 events. 1366/2547 cut-off events. For 825317/825317 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 16465 event pairs, 199 based on Foata normal form. 10/2556 useless extension candidates. Maximal degree in co-relation 20012. Up to 1659 conditions per place. [2024-06-04 14:51:10,160 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 336 selfloop transitions, 155 changer transitions 12/505 dead transitions. [2024-06-04 14:51:10,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 505 transitions, 5937 flow [2024-06-04 14:51:10,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:51:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:51:10,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-04 14:51:10,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776223776223776 [2024-06-04 14:51:10,161 INFO L175 Difference]: Start difference. First operand has 525 places, 478 transitions, 4769 flow. Second operand 13 states and 162 transitions. [2024-06-04 14:51:10,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 505 transitions, 5937 flow [2024-06-04 14:51:13,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 505 transitions, 5717 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-04 14:51:13,283 INFO L231 Difference]: Finished difference. Result has 531 places, 476 transitions, 4834 flow [2024-06-04 14:51:13,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4549, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4834, PETRI_PLACES=531, PETRI_TRANSITIONS=476} [2024-06-04 14:51:13,284 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 499 predicate places. [2024-06-04 14:51:13,284 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 476 transitions, 4834 flow [2024-06-04 14:51:13,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:13,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:13,284 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 14:51:13,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-04 14:51:13,285 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:51:13,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:13,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1368319187, now seen corresponding path program 12 times [2024-06-04 14:51:13,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:13,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235696708] [2024-06-04 14:51:13,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:13,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:14,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:51:14,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:14,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235696708] [2024-06-04 14:51:14,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235696708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:14,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:14,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:51:14,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196940252] [2024-06-04 14:51:14,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:14,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:51:14,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:14,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:51:14,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:51:14,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:51:14,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 476 transitions, 4834 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:14,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:14,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:51:14,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:15,357 INFO L124 PetriNetUnfolderBase]: 1333/2488 cut-off events. [2024-06-04 14:51:15,357 INFO L125 PetriNetUnfolderBase]: For 686364/686364 co-relation queries the response was YES. [2024-06-04 14:51:15,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19745 conditions, 2488 events. 1333/2488 cut-off events. For 686364/686364 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 16070 event pairs, 194 based on Foata normal form. 2/2489 useless extension candidates. Maximal degree in co-relation 19526. Up to 1646 conditions per place. [2024-06-04 14:51:15,398 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 338 selfloop transitions, 156 changer transitions 0/496 dead transitions. [2024-06-04 14:51:15,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 496 transitions, 5878 flow [2024-06-04 14:51:15,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:51:15,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:51:15,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-04 14:51:15,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-04 14:51:15,399 INFO L175 Difference]: Start difference. First operand has 531 places, 476 transitions, 4834 flow. Second operand 12 states and 150 transitions. [2024-06-04 14:51:15,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 496 transitions, 5878 flow [2024-06-04 14:51:18,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 496 transitions, 5544 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-04 14:51:18,463 INFO L231 Difference]: Finished difference. Result has 529 places, 476 transitions, 4817 flow [2024-06-04 14:51:18,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4500, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4817, PETRI_PLACES=529, PETRI_TRANSITIONS=476} [2024-06-04 14:51:18,464 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 497 predicate places. [2024-06-04 14:51:18,464 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 476 transitions, 4817 flow [2024-06-04 14:51:18,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:18,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:18,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:18,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-04 14:51:18,464 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:51:18,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:18,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1368134613, now seen corresponding path program 30 times [2024-06-04 14:51:18,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:18,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126418859] [2024-06-04 14:51:18,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:18,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:19,519 INFO 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 14:51:19,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:19,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126418859] [2024-06-04 14:51:19,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126418859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:19,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:19,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:51:19,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289865739] [2024-06-04 14:51:19,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:19,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:51:19,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:19,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:51:19,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:51:19,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:51:19,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 476 transitions, 4817 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:19,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:19,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:51:19,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:20,437 INFO L124 PetriNetUnfolderBase]: 1360/2549 cut-off events. [2024-06-04 14:51:20,437 INFO L125 PetriNetUnfolderBase]: For 859461/859461 co-relation queries the response was YES. [2024-06-04 14:51:20,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21090 conditions, 2549 events. 1360/2549 cut-off events. For 859461/859461 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 16469 event pairs, 195 based on Foata normal form. 8/2556 useless extension candidates. Maximal degree in co-relation 20872. Up to 1547 conditions per place. [2024-06-04 14:51:20,478 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 327 selfloop transitions, 168 changer transitions 9/506 dead transitions. [2024-06-04 14:51:20,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 506 transitions, 6379 flow [2024-06-04 14:51:20,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:51:20,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:51:20,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-04 14:51:20,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916083916083916 [2024-06-04 14:51:20,480 INFO L175 Difference]: Start difference. First operand has 529 places, 476 transitions, 4817 flow. Second operand 13 states and 168 transitions. [2024-06-04 14:51:20,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 506 transitions, 6379 flow [2024-06-04 14:51:23,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 506 transitions, 6059 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-04 14:51:23,694 INFO L231 Difference]: Finished difference. Result has 531 places, 472 transitions, 4794 flow [2024-06-04 14:51:23,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4497, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4794, PETRI_PLACES=531, PETRI_TRANSITIONS=472} [2024-06-04 14:51:23,697 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 499 predicate places. [2024-06-04 14:51:23,697 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 472 transitions, 4794 flow [2024-06-04 14:51:23,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:23,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:23,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:23,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-04 14:51:23,697 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:51:23,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:23,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1725357105, now seen corresponding path program 31 times [2024-06-04 14:51:23,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:23,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435962883] [2024-06-04 14:51:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:23,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:24,777 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 14:51:24,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:24,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435962883] [2024-06-04 14:51:24,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435962883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:24,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:24,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:51:24,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717216523] [2024-06-04 14:51:24,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:24,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:51:24,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:24,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:51:24,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:51:24,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:51:24,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 472 transitions, 4794 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:24,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:24,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:51:24,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:25,755 INFO L124 PetriNetUnfolderBase]: 1326/2483 cut-off events. [2024-06-04 14:51:25,756 INFO L125 PetriNetUnfolderBase]: For 751407/751407 co-relation queries the response was YES. [2024-06-04 14:51:25,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19049 conditions, 2483 events. 1326/2483 cut-off events. For 751407/751407 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 16044 event pairs, 188 based on Foata normal form. 10/2492 useless extension candidates. Maximal degree in co-relation 18830. Up to 1595 conditions per place. [2024-06-04 14:51:25,790 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 333 selfloop transitions, 151 changer transitions 12/498 dead transitions. [2024-06-04 14:51:25,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 498 transitions, 5942 flow [2024-06-04 14:51:25,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:51:25,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:51:25,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-04 14:51:25,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776223776223776 [2024-06-04 14:51:25,791 INFO L175 Difference]: Start difference. First operand has 531 places, 472 transitions, 4794 flow. Second operand 13 states and 162 transitions. [2024-06-04 14:51:25,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 498 transitions, 5942 flow [2024-06-04 14:51:28,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 498 transitions, 5604 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:51:28,659 INFO L231 Difference]: Finished difference. Result has 529 places, 468 transitions, 4717 flow [2024-06-04 14:51:28,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4456, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4717, PETRI_PLACES=529, PETRI_TRANSITIONS=468} [2024-06-04 14:51:28,660 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 497 predicate places. [2024-06-04 14:51:28,660 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 468 transitions, 4717 flow [2024-06-04 14:51:28,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:28,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:28,661 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 14:51:28,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-04 14:51:28,661 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:51:28,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:28,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1971544035, now seen corresponding path program 13 times [2024-06-04 14:51:28,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:28,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569351447] [2024-06-04 14:51:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:28,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:29,687 INFO 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 14:51:29,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:29,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569351447] [2024-06-04 14:51:29,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569351447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:29,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:29,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:51:29,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990623939] [2024-06-04 14:51:29,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:29,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:51:29,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:29,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:51:29,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:51:29,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:51:29,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 468 transitions, 4717 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:29,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:29,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:51:29,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:30,564 INFO L124 PetriNetUnfolderBase]: 1300/2437 cut-off events. [2024-06-04 14:51:30,564 INFO L125 PetriNetUnfolderBase]: For 624921/624921 co-relation queries the response was YES. [2024-06-04 14:51:30,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18660 conditions, 2437 events. 1300/2437 cut-off events. For 624921/624921 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 15732 event pairs, 198 based on Foata normal form. 2/2438 useless extension candidates. Maximal degree in co-relation 18442. Up to 1595 conditions per place. [2024-06-04 14:51:30,602 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 331 selfloop transitions, 154 changer transitions 0/487 dead transitions. [2024-06-04 14:51:30,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 487 transitions, 5765 flow [2024-06-04 14:51:30,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:51:30,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:51:30,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-04 14:51:30,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-04 14:51:30,603 INFO L175 Difference]: Start difference. First operand has 529 places, 468 transitions, 4717 flow. Second operand 12 states and 148 transitions. [2024-06-04 14:51:30,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 487 transitions, 5765 flow [2024-06-04 14:51:33,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 487 transitions, 5455 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:51:33,564 INFO L231 Difference]: Finished difference. Result has 525 places, 469 transitions, 4750 flow [2024-06-04 14:51:33,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4407, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4750, PETRI_PLACES=525, PETRI_TRANSITIONS=469} [2024-06-04 14:51:33,564 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 493 predicate places. [2024-06-04 14:51:33,564 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 469 transitions, 4750 flow [2024-06-04 14:51:33,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:33,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:33,565 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 14:51:33,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-04 14:51:33,565 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:51:33,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:33,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1478407765, now seen corresponding path program 32 times [2024-06-04 14:51:33,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:33,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850820010] [2024-06-04 14:51:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:33,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:34,589 INFO 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 14:51:34,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:34,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850820010] [2024-06-04 14:51:34,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850820010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:34,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:34,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:51:34,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471537416] [2024-06-04 14:51:34,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:34,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:51:34,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:34,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:51:34,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:51:34,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:51:34,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 469 transitions, 4750 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:34,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:34,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:51:34,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:35,603 INFO L124 PetriNetUnfolderBase]: 1341/2524 cut-off events. [2024-06-04 14:51:35,603 INFO L125 PetriNetUnfolderBase]: For 851490/851490 co-relation queries the response was YES. [2024-06-04 14:51:35,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20851 conditions, 2524 events. 1341/2524 cut-off events. For 851490/851490 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 16364 event pairs, 199 based on Foata normal form. 8/2531 useless extension candidates. Maximal degree in co-relation 20634. Up to 1528 conditions per place. [2024-06-04 14:51:35,648 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 318 selfloop transitions, 170 changer transitions 7/497 dead transitions. [2024-06-04 14:51:35,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 497 transitions, 6280 flow [2024-06-04 14:51:35,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:51:35,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:51:35,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-04 14:51:35,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38927738927738925 [2024-06-04 14:51:35,649 INFO L175 Difference]: Start difference. First operand has 525 places, 469 transitions, 4750 flow. Second operand 13 states and 167 transitions. [2024-06-04 14:51:35,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 497 transitions, 6280 flow [2024-06-04 14:51:39,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 497 transitions, 5949 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-04 14:51:39,224 INFO L231 Difference]: Finished difference. Result has 528 places, 467 transitions, 4745 flow [2024-06-04 14:51:39,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4419, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4745, PETRI_PLACES=528, PETRI_TRANSITIONS=467} [2024-06-04 14:51:39,225 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 496 predicate places. [2024-06-04 14:51:39,225 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 467 transitions, 4745 flow [2024-06-04 14:51:39,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:39,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:39,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:39,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-04 14:51:39,226 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:51:39,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:39,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1242293945, now seen corresponding path program 33 times [2024-06-04 14:51:39,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:39,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984309600] [2024-06-04 14:51:39,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:39,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:40,408 INFO 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 14:51:40,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:40,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984309600] [2024-06-04 14:51:40,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984309600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:40,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:40,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:51:40,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998811791] [2024-06-04 14:51:40,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:40,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:51:40,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:40,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:51:40,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:51:40,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:51:40,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 467 transitions, 4745 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:40,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:40,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:51:40,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:41,351 INFO L124 PetriNetUnfolderBase]: 1354/2547 cut-off events. [2024-06-04 14:51:41,351 INFO L125 PetriNetUnfolderBase]: For 892115/892115 co-relation queries the response was YES. [2024-06-04 14:51:41,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21052 conditions, 2547 events. 1354/2547 cut-off events. For 892115/892115 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 16535 event pairs, 365 based on Foata normal form. 10/2556 useless extension candidates. Maximal degree in co-relation 20834. Up to 1930 conditions per place. [2024-06-04 14:51:41,393 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 405 selfloop transitions, 109 changer transitions 11/527 dead transitions. [2024-06-04 14:51:41,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 527 transitions, 6137 flow [2024-06-04 14:51:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:51:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:51:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 173 transitions. [2024-06-04 14:51:41,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37445887445887444 [2024-06-04 14:51:41,394 INFO L175 Difference]: Start difference. First operand has 528 places, 467 transitions, 4745 flow. Second operand 14 states and 173 transitions. [2024-06-04 14:51:41,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 527 transitions, 6137 flow [2024-06-04 14:51:44,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 527 transitions, 5775 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 14:51:44,657 INFO L231 Difference]: Finished difference. Result has 532 places, 479 transitions, 4742 flow [2024-06-04 14:51:44,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4403, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4742, PETRI_PLACES=532, PETRI_TRANSITIONS=479} [2024-06-04 14:51:44,658 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 500 predicate places. [2024-06-04 14:51:44,658 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 479 transitions, 4742 flow [2024-06-04 14:51:44,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:44,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:44,658 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 14:51:44,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-04 14:51:44,659 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:51:44,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:44,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1248960619, now seen corresponding path program 14 times [2024-06-04 14:51:44,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:44,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366923937] [2024-06-04 14:51:44,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:44,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:45,981 INFO 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 14:51:45,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:45,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366923937] [2024-06-04 14:51:45,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366923937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:45,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:45,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:51:45,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292826855] [2024-06-04 14:51:45,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:45,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:51:45,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:45,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:51:45,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:51:46,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:51:46,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 479 transitions, 4742 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:46,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:46,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:51:46,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:47,023 INFO L124 PetriNetUnfolderBase]: 1346/2527 cut-off events. [2024-06-04 14:51:47,023 INFO L125 PetriNetUnfolderBase]: For 774150/774150 co-relation queries the response was YES. [2024-06-04 14:51:47,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20916 conditions, 2527 events. 1346/2527 cut-off events. For 774150/774150 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 16394 event pairs, 209 based on Foata normal form. 2/2528 useless extension candidates. Maximal degree in co-relation 20695. Up to 1677 conditions per place. [2024-06-04 14:51:47,065 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 338 selfloop transitions, 162 changer transitions 0/502 dead transitions. [2024-06-04 14:51:47,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 502 transitions, 5885 flow [2024-06-04 14:51:47,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:51:47,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:51:47,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-04 14:51:47,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37626262626262624 [2024-06-04 14:51:47,066 INFO L175 Difference]: Start difference. First operand has 532 places, 479 transitions, 4742 flow. Second operand 12 states and 149 transitions. [2024-06-04 14:51:47,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 502 transitions, 5885 flow [2024-06-04 14:51:50,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 502 transitions, 5736 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 14:51:50,377 INFO L231 Difference]: Finished difference. Result has 535 places, 484 transitions, 5017 flow [2024-06-04 14:51:50,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4594, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5017, PETRI_PLACES=535, PETRI_TRANSITIONS=484} [2024-06-04 14:51:50,377 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 503 predicate places. [2024-06-04 14:51:50,377 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 484 transitions, 5017 flow [2024-06-04 14:51:50,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:50,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:50,378 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 14:51:50,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-04 14:51:50,378 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:51:50,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:50,378 INFO L85 PathProgramCache]: Analyzing trace with hash -575941901, now seen corresponding path program 15 times [2024-06-04 14:51:50,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:50,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659106805] [2024-06-04 14:51:50,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:50,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:51,563 INFO 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 14:51:51,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:51,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659106805] [2024-06-04 14:51:51,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659106805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:51,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:51,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:51:51,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941811203] [2024-06-04 14:51:51,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:51,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:51:51,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:51,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:51:51,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:51:51,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:51:51,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 484 transitions, 5017 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:51,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:51,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:51:51,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:52,462 INFO L124 PetriNetUnfolderBase]: 1350/2535 cut-off events. [2024-06-04 14:51:52,462 INFO L125 PetriNetUnfolderBase]: For 775302/775302 co-relation queries the response was YES. [2024-06-04 14:51:52,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21180 conditions, 2535 events. 1350/2535 cut-off events. For 775302/775302 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 16467 event pairs, 213 based on Foata normal form. 2/2536 useless extension candidates. Maximal degree in co-relation 20960. Up to 1685 conditions per place. [2024-06-04 14:51:52,503 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 349 selfloop transitions, 153 changer transitions 0/504 dead transitions. [2024-06-04 14:51:52,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 504 transitions, 6107 flow [2024-06-04 14:51:52,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:51:52,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:51:52,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-04 14:51:52,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-04 14:51:52,505 INFO L175 Difference]: Start difference. First operand has 535 places, 484 transitions, 5017 flow. Second operand 12 states and 153 transitions. [2024-06-04 14:51:52,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 504 transitions, 6107 flow [2024-06-04 14:51:56,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 504 transitions, 5778 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-04 14:51:56,239 INFO L231 Difference]: Finished difference. Result has 539 places, 485 transitions, 5033 flow [2024-06-04 14:51:56,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4688, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5033, PETRI_PLACES=539, PETRI_TRANSITIONS=485} [2024-06-04 14:51:56,240 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 507 predicate places. [2024-06-04 14:51:56,240 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 485 transitions, 5033 flow [2024-06-04 14:51:56,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:56,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:51:56,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:51:56,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-04 14:51:56,240 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:51:56,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:51:56,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1305191991, now seen corresponding path program 34 times [2024-06-04 14:51:56,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:51:56,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33326244] [2024-06-04 14:51:56,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:51:56,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:51:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:51:57,459 INFO 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 14:51:57,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:51:57,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33326244] [2024-06-04 14:51:57,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33326244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:51:57,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:51:57,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:51:57,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499338809] [2024-06-04 14:51:57,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:51:57,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:51:57,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:51:57,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:51:57,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:51:57,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:51:57,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 485 transitions, 5033 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:51:57,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:51:57,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:51:57,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:51:58,549 INFO L124 PetriNetUnfolderBase]: 1393/2616 cut-off events. [2024-06-04 14:51:58,549 INFO L125 PetriNetUnfolderBase]: For 903278/903278 co-relation queries the response was YES. [2024-06-04 14:51:58,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21591 conditions, 2616 events. 1393/2616 cut-off events. For 903278/903278 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 17055 event pairs, 388 based on Foata normal form. 10/2625 useless extension candidates. Maximal degree in co-relation 21370. Up to 1983 conditions per place. [2024-06-04 14:51:58,593 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 418 selfloop transitions, 110 changer transitions 11/541 dead transitions. [2024-06-04 14:51:58,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 541 transitions, 6422 flow [2024-06-04 14:51:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:51:58,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:51:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 177 transitions. [2024-06-04 14:51:58,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2024-06-04 14:51:58,594 INFO L175 Difference]: Start difference. First operand has 539 places, 485 transitions, 5033 flow. Second operand 14 states and 177 transitions. [2024-06-04 14:51:58,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 541 transitions, 6422 flow [2024-06-04 14:52:02,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 541 transitions, 6081 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-04 14:52:02,207 INFO L231 Difference]: Finished difference. Result has 546 places, 495 transitions, 5019 flow [2024-06-04 14:52:02,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4700, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5019, PETRI_PLACES=546, PETRI_TRANSITIONS=495} [2024-06-04 14:52:02,208 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 514 predicate places. [2024-06-04 14:52:02,208 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 495 transitions, 5019 flow [2024-06-04 14:52:02,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:02,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:02,208 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 14:52:02,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-04 14:52:02,208 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:52:02,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1478412415, now seen corresponding path program 35 times [2024-06-04 14:52:02,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:02,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122139598] [2024-06-04 14:52:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:02,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:03,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:03,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122139598] [2024-06-04 14:52:03,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122139598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:03,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:03,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:52:03,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979833081] [2024-06-04 14:52:03,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:03,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:52:03,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:03,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:52:03,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:52:03,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:52:03,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 495 transitions, 5019 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:03,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:03,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:52:03,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:04,233 INFO L124 PetriNetUnfolderBase]: 1356/2545 cut-off events. [2024-06-04 14:52:04,233 INFO L125 PetriNetUnfolderBase]: For 761316/761316 co-relation queries the response was YES. [2024-06-04 14:52:04,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19384 conditions, 2545 events. 1356/2545 cut-off events. For 761316/761316 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 16536 event pairs, 184 based on Foata normal form. 10/2554 useless extension candidates. Maximal degree in co-relation 19159. Up to 1602 conditions per place. [2024-06-04 14:52:04,274 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 323 selfloop transitions, 176 changer transitions 17/518 dead transitions. [2024-06-04 14:52:04,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 518 transitions, 6193 flow [2024-06-04 14:52:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:52:04,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:52:04,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-04 14:52:04,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3752913752913753 [2024-06-04 14:52:04,276 INFO L175 Difference]: Start difference. First operand has 546 places, 495 transitions, 5019 flow. Second operand 13 states and 161 transitions. [2024-06-04 14:52:04,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 518 transitions, 6193 flow [2024-06-04 14:52:07,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 518 transitions, 6040 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 14:52:07,258 INFO L231 Difference]: Finished difference. Result has 550 places, 488 transitions, 5152 flow [2024-06-04 14:52:07,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4866, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5152, PETRI_PLACES=550, PETRI_TRANSITIONS=488} [2024-06-04 14:52:07,259 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 518 predicate places. [2024-06-04 14:52:07,259 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 488 transitions, 5152 flow [2024-06-04 14:52:07,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:07,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:07,259 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 14:52:07,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-04 14:52:07,259 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:52:07,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:07,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2087247901, now seen corresponding path program 16 times [2024-06-04 14:52:07,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:07,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148315579] [2024-06-04 14:52:07,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:07,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:08,349 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 14:52:08,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:08,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148315579] [2024-06-04 14:52:08,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148315579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:08,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:08,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:52:08,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828623631] [2024-06-04 14:52:08,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:08,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:52:08,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:08,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:52:08,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:52:08,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:52:08,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 488 transitions, 5152 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:08,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:08,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:52:08,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:09,291 INFO L124 PetriNetUnfolderBase]: 1343/2514 cut-off events. [2024-06-04 14:52:09,292 INFO L125 PetriNetUnfolderBase]: For 641832/641832 co-relation queries the response was YES. [2024-06-04 14:52:09,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19488 conditions, 2514 events. 1343/2514 cut-off events. For 641832/641832 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 16301 event pairs, 194 based on Foata normal form. 2/2515 useless extension candidates. Maximal degree in co-relation 19264. Up to 1662 conditions per place. [2024-06-04 14:52:09,332 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 350 selfloop transitions, 159 changer transitions 0/511 dead transitions. [2024-06-04 14:52:09,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 511 transitions, 6330 flow [2024-06-04 14:52:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:52:09,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:52:09,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-04 14:52:09,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-04 14:52:09,333 INFO L175 Difference]: Start difference. First operand has 550 places, 488 transitions, 5152 flow. Second operand 12 states and 150 transitions. [2024-06-04 14:52:09,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 511 transitions, 6330 flow [2024-06-04 14:52:12,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 511 transitions, 5960 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 14:52:12,383 INFO L231 Difference]: Finished difference. Result has 542 places, 493 transitions, 5217 flow [2024-06-04 14:52:12,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4790, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5217, PETRI_PLACES=542, PETRI_TRANSITIONS=493} [2024-06-04 14:52:12,384 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 510 predicate places. [2024-06-04 14:52:12,384 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 493 transitions, 5217 flow [2024-06-04 14:52:12,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:12,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:12,384 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 14:52:12,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-04 14:52:12,384 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:52:12,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:12,385 INFO L85 PathProgramCache]: Analyzing trace with hash -926500013, now seen corresponding path program 17 times [2024-06-04 14:52:12,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:12,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410201981] [2024-06-04 14:52:12,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:12,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:13,418 INFO 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 14:52:13,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:13,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410201981] [2024-06-04 14:52:13,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410201981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:13,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:13,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:52:13,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634373165] [2024-06-04 14:52:13,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:13,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:52:13,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:13,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:52:13,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:52:13,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:52:13,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 493 transitions, 5217 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:13,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:13,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:52:13,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:14,313 INFO L124 PetriNetUnfolderBase]: 1347/2522 cut-off events. [2024-06-04 14:52:14,314 INFO L125 PetriNetUnfolderBase]: For 621410/621410 co-relation queries the response was YES. [2024-06-04 14:52:14,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19371 conditions, 2522 events. 1347/2522 cut-off events. For 621410/621410 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 16373 event pairs, 198 based on Foata normal form. 2/2523 useless extension candidates. Maximal degree in co-relation 19150. Up to 1670 conditions per place. [2024-06-04 14:52:14,355 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 358 selfloop transitions, 153 changer transitions 0/513 dead transitions. [2024-06-04 14:52:14,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 513 transitions, 6329 flow [2024-06-04 14:52:14,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:52:14,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:52:14,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-04 14:52:14,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 14:52:14,356 INFO L175 Difference]: Start difference. First operand has 542 places, 493 transitions, 5217 flow. Second operand 12 states and 154 transitions. [2024-06-04 14:52:14,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 513 transitions, 6329 flow [2024-06-04 14:52:17,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 513 transitions, 6001 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-04 14:52:17,264 INFO L231 Difference]: Finished difference. Result has 546 places, 494 transitions, 5238 flow [2024-06-04 14:52:17,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4889, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5238, PETRI_PLACES=546, PETRI_TRANSITIONS=494} [2024-06-04 14:52:17,280 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 514 predicate places. [2024-06-04 14:52:17,280 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 494 transitions, 5238 flow [2024-06-04 14:52:17,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:17,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:17,281 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 14:52:17,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-04 14:52:17,281 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:52:17,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:17,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1850682903, now seen corresponding path program 18 times [2024-06-04 14:52:17,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:17,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341285479] [2024-06-04 14:52:17,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:17,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:18,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:18,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341285479] [2024-06-04 14:52:18,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341285479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:18,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:18,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:52:18,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725460034] [2024-06-04 14:52:18,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:18,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:52:18,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:18,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:52:18,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:52:18,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:52:18,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 494 transitions, 5238 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:18,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:18,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:52:18,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:19,444 INFO L124 PetriNetUnfolderBase]: 1412/2649 cut-off events. [2024-06-04 14:52:19,444 INFO L125 PetriNetUnfolderBase]: For 859156/859156 co-relation queries the response was YES. [2024-06-04 14:52:19,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21838 conditions, 2649 events. 1412/2649 cut-off events. For 859156/859156 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 17306 event pairs, 207 based on Foata normal form. 8/2656 useless extension candidates. Maximal degree in co-relation 21616. Up to 1642 conditions per place. [2024-06-04 14:52:19,491 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 360 selfloop transitions, 162 changer transitions 8/532 dead transitions. [2024-06-04 14:52:19,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 532 transitions, 6940 flow [2024-06-04 14:52:19,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 14:52:19,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 14:52:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 178 transitions. [2024-06-04 14:52:19,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3852813852813853 [2024-06-04 14:52:19,492 INFO L175 Difference]: Start difference. First operand has 546 places, 494 transitions, 5238 flow. Second operand 14 states and 178 transitions. [2024-06-04 14:52:19,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 532 transitions, 6940 flow [2024-06-04 14:52:23,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 532 transitions, 6603 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-04 14:52:23,349 INFO L231 Difference]: Finished difference. Result has 550 places, 499 transitions, 5261 flow [2024-06-04 14:52:23,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4901, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5261, PETRI_PLACES=550, PETRI_TRANSITIONS=499} [2024-06-04 14:52:23,349 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 518 predicate places. [2024-06-04 14:52:23,349 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 499 transitions, 5261 flow [2024-06-04 14:52:23,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:23,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:23,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:23,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-04 14:52:23,350 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:52:23,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:23,351 INFO L85 PathProgramCache]: Analyzing trace with hash -696811403, now seen corresponding path program 19 times [2024-06-04 14:52:23,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:23,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576280433] [2024-06-04 14:52:23,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:23,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:24,470 INFO 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 14:52:24,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:24,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576280433] [2024-06-04 14:52:24,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576280433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:24,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:24,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 14:52:24,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513548714] [2024-06-04 14:52:24,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:24,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 14:52:24,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:24,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 14:52:24,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-06-04 14:52:24,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:52:24,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 499 transitions, 5261 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:24,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:24,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:52:24,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:25,455 INFO L124 PetriNetUnfolderBase]: 1396/2617 cut-off events. [2024-06-04 14:52:25,456 INFO L125 PetriNetUnfolderBase]: For 785631/785631 co-relation queries the response was YES. [2024-06-04 14:52:25,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21675 conditions, 2617 events. 1396/2617 cut-off events. For 785631/785631 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 17107 event pairs, 221 based on Foata normal form. 2/2618 useless extension candidates. Maximal degree in co-relation 21452. Up to 1765 conditions per place. [2024-06-04 14:52:25,495 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 365 selfloop transitions, 151 changer transitions 0/518 dead transitions. [2024-06-04 14:52:25,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 518 transitions, 6381 flow [2024-06-04 14:52:25,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:52:25,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:52:25,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-04 14:52:25,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-04 14:52:25,496 INFO L175 Difference]: Start difference. First operand has 550 places, 499 transitions, 5261 flow. Second operand 12 states and 151 transitions. [2024-06-04 14:52:25,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 518 transitions, 6381 flow [2024-06-04 14:52:29,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 518 transitions, 6175 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 14:52:29,296 INFO L231 Difference]: Finished difference. Result has 550 places, 500 transitions, 5402 flow [2024-06-04 14:52:29,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5055, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5402, PETRI_PLACES=550, PETRI_TRANSITIONS=500} [2024-06-04 14:52:29,297 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 518 predicate places. [2024-06-04 14:52:29,297 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 500 transitions, 5402 flow [2024-06-04 14:52:29,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:29,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:29,297 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 14:52:29,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-04 14:52:29,298 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:52:29,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:29,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1620994293, now seen corresponding path program 20 times [2024-06-04 14:52:29,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:29,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105775082] [2024-06-04 14:52:29,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:29,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:30,515 INFO 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 14:52:30,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:30,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105775082] [2024-06-04 14:52:30,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105775082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:30,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:30,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:52:30,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043357565] [2024-06-04 14:52:30,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:30,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:52:30,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:30,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:52:30,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:52:30,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:52:30,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 500 transitions, 5402 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:30,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:30,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:52:30,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:31,511 INFO L124 PetriNetUnfolderBase]: 1400/2625 cut-off events. [2024-06-04 14:52:31,511 INFO L125 PetriNetUnfolderBase]: For 777048/777048 co-relation queries the response was YES. [2024-06-04 14:52:31,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21977 conditions, 2625 events. 1400/2625 cut-off events. For 777048/777048 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 17153 event pairs, 217 based on Foata normal form. 2/2626 useless extension candidates. Maximal degree in co-relation 21754. Up to 1749 conditions per place. [2024-06-04 14:52:31,553 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 356 selfloop transitions, 161 changer transitions 0/519 dead transitions. [2024-06-04 14:52:31,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 519 transitions, 6524 flow [2024-06-04 14:52:31,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:52:31,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:52:31,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-04 14:52:31,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37626262626262624 [2024-06-04 14:52:31,555 INFO L175 Difference]: Start difference. First operand has 550 places, 500 transitions, 5402 flow. Second operand 12 states and 149 transitions. [2024-06-04 14:52:31,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 519 transitions, 6524 flow [2024-06-04 14:52:35,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 519 transitions, 6189 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-04 14:52:35,056 INFO L231 Difference]: Finished difference. Result has 552 places, 501 transitions, 5435 flow [2024-06-04 14:52:35,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5067, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5435, PETRI_PLACES=552, PETRI_TRANSITIONS=501} [2024-06-04 14:52:35,057 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 520 predicate places. [2024-06-04 14:52:35,057 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 501 transitions, 5435 flow [2024-06-04 14:52:35,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:35,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:35,057 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 14:52:35,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-04 14:52:35,057 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:52:35,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:35,058 INFO L85 PathProgramCache]: Analyzing trace with hash -926491643, now seen corresponding path program 21 times [2024-06-04 14:52:35,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:35,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922383439] [2024-06-04 14:52:35,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:35,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:36,309 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 14:52:36,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:36,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922383439] [2024-06-04 14:52:36,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922383439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:36,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:36,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:52:36,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305537403] [2024-06-04 14:52:36,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:36,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:52:36,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:36,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:52:36,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:52:36,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:52:36,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 501 transitions, 5435 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:36,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:36,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:52:36,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:37,351 INFO L124 PetriNetUnfolderBase]: 1404/2633 cut-off events. [2024-06-04 14:52:37,351 INFO L125 PetriNetUnfolderBase]: For 786458/786458 co-relation queries the response was YES. [2024-06-04 14:52:37,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22088 conditions, 2633 events. 1404/2633 cut-off events. For 786458/786458 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 17243 event pairs, 223 based on Foata normal form. 2/2634 useless extension candidates. Maximal degree in co-relation 21864. Up to 1757 conditions per place. [2024-06-04 14:52:37,397 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 367 selfloop transitions, 152 changer transitions 0/521 dead transitions. [2024-06-04 14:52:37,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 521 transitions, 6567 flow [2024-06-04 14:52:37,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:52:37,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:52:37,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-04 14:52:37,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 14:52:37,399 INFO L175 Difference]: Start difference. First operand has 552 places, 501 transitions, 5435 flow. Second operand 12 states and 154 transitions. [2024-06-04 14:52:37,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 521 transitions, 6567 flow [2024-06-04 14:52:41,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 521 transitions, 6209 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-04 14:52:41,011 INFO L231 Difference]: Finished difference. Result has 554 places, 502 transitions, 5429 flow [2024-06-04 14:52:41,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5077, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5429, PETRI_PLACES=554, PETRI_TRANSITIONS=502} [2024-06-04 14:52:41,012 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 522 predicate places. [2024-06-04 14:52:41,012 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 502 transitions, 5429 flow [2024-06-04 14:52:41,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:41,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:41,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:52:41,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-04 14:52:41,013 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:52:41,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:41,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1842393379, now seen corresponding path program 36 times [2024-06-04 14:52:41,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:41,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325243169] [2024-06-04 14:52:41,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:41,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:42,791 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 14:52:42,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:42,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325243169] [2024-06-04 14:52:42,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325243169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:42,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:42,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:52:42,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878993315] [2024-06-04 14:52:42,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:42,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:52:42,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:42,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:52:42,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:52:42,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:52:42,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 502 transitions, 5429 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:42,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:42,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:52:42,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:43,998 INFO L124 PetriNetUnfolderBase]: 1391/2610 cut-off events. [2024-06-04 14:52:43,998 INFO L125 PetriNetUnfolderBase]: For 763940/763940 co-relation queries the response was YES. [2024-06-04 14:52:44,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20169 conditions, 2610 events. 1391/2610 cut-off events. For 763940/763940 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 17063 event pairs, 204 based on Foata normal form. 10/2619 useless extension candidates. Maximal degree in co-relation 19944. Up to 1690 conditions per place. [2024-06-04 14:52:44,037 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 351 selfloop transitions, 148 changer transitions 25/526 dead transitions. [2024-06-04 14:52:44,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 526 transitions, 6621 flow [2024-06-04 14:52:44,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:52:44,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:52:44,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-04 14:52:44,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37995337995337997 [2024-06-04 14:52:44,038 INFO L175 Difference]: Start difference. First operand has 554 places, 502 transitions, 5429 flow. Second operand 13 states and 163 transitions. [2024-06-04 14:52:44,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 526 transitions, 6621 flow [2024-06-04 14:52:47,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 526 transitions, 6279 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-04 14:52:47,150 INFO L231 Difference]: Finished difference. Result has 557 places, 489 transitions, 5231 flow [2024-06-04 14:52:47,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5087, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5231, PETRI_PLACES=557, PETRI_TRANSITIONS=489} [2024-06-04 14:52:47,150 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 525 predicate places. [2024-06-04 14:52:47,150 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 489 transitions, 5231 flow [2024-06-04 14:52:47,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:47,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:47,151 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 14:52:47,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-04 14:52:47,151 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:52:47,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:47,151 INFO L85 PathProgramCache]: Analyzing trace with hash -926737597, now seen corresponding path program 37 times [2024-06-04 14:52:47,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:47,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784939530] [2024-06-04 14:52:47,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:47,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:48,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:48,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784939530] [2024-06-04 14:52:48,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784939530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:48,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:48,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:52:48,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817235406] [2024-06-04 14:52:48,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:48,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:52:48,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:48,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:52:48,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:52:48,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:52:48,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 489 transitions, 5231 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:48,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:48,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:52:48,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:49,451 INFO L124 PetriNetUnfolderBase]: 1347/2538 cut-off events. [2024-06-04 14:52:49,451 INFO L125 PetriNetUnfolderBase]: For 771590/771590 co-relation queries the response was YES. [2024-06-04 14:52:49,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19714 conditions, 2538 events. 1347/2538 cut-off events. For 771590/771590 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 16574 event pairs, 193 based on Foata normal form. 10/2547 useless extension candidates. Maximal degree in co-relation 19488. Up to 1629 conditions per place. [2024-06-04 14:52:49,493 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 348 selfloop transitions, 150 changer transitions 14/514 dead transitions. [2024-06-04 14:52:49,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 514 transitions, 6403 flow [2024-06-04 14:52:49,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:52:49,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:52:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-04 14:52:49,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916083916083916 [2024-06-04 14:52:49,495 INFO L175 Difference]: Start difference. First operand has 557 places, 489 transitions, 5231 flow. Second operand 13 states and 168 transitions. [2024-06-04 14:52:49,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 514 transitions, 6403 flow [2024-06-04 14:52:52,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 514 transitions, 6084 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 14:52:52,769 INFO L231 Difference]: Finished difference. Result has 550 places, 483 transitions, 5152 flow [2024-06-04 14:52:52,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4912, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5152, PETRI_PLACES=550, PETRI_TRANSITIONS=483} [2024-06-04 14:52:52,770 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 518 predicate places. [2024-06-04 14:52:52,770 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 483 transitions, 5152 flow [2024-06-04 14:52:52,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:52,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:52,770 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 14:52:52,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-04 14:52:52,771 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:52:52,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:52,771 INFO L85 PathProgramCache]: Analyzing trace with hash -932993707, now seen corresponding path program 38 times [2024-06-04 14:52:52,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:52,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310230110] [2024-06-04 14:52:52,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:52,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:52:53,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:53,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310230110] [2024-06-04 14:52:53,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310230110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:53,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:53,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:52:53,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002541922] [2024-06-04 14:52:53,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:53,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:52:53,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:53,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:52:53,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:52:54,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:52:54,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 483 transitions, 5152 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:54,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:54,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:52:54,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:52:54,869 INFO L124 PetriNetUnfolderBase]: 1327/2510 cut-off events. [2024-06-04 14:52:54,870 INFO L125 PetriNetUnfolderBase]: For 762716/762716 co-relation queries the response was YES. [2024-06-04 14:52:54,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19487 conditions, 2510 events. 1327/2510 cut-off events. For 762716/762716 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 16459 event pairs, 198 based on Foata normal form. 10/2519 useless extension candidates. Maximal degree in co-relation 19262. Up to 1634 conditions per place. [2024-06-04 14:52:54,911 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 347 selfloop transitions, 145 changer transitions 14/508 dead transitions. [2024-06-04 14:52:54,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 508 transitions, 6312 flow [2024-06-04 14:52:54,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:52:54,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:52:54,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-04 14:52:54,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38694638694638694 [2024-06-04 14:52:54,921 INFO L175 Difference]: Start difference. First operand has 550 places, 483 transitions, 5152 flow. Second operand 13 states and 166 transitions. [2024-06-04 14:52:54,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 508 transitions, 6312 flow [2024-06-04 14:52:57,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 508 transitions, 6063 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 14:52:57,984 INFO L231 Difference]: Finished difference. Result has 549 places, 477 transitions, 5133 flow [2024-06-04 14:52:57,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4903, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5133, PETRI_PLACES=549, PETRI_TRANSITIONS=477} [2024-06-04 14:52:57,984 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 517 predicate places. [2024-06-04 14:52:57,984 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 477 transitions, 5133 flow [2024-06-04 14:52:57,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:57,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:52:57,985 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 14:52:57,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2024-06-04 14:52:57,985 INFO L420 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:52:57,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:52:57,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2036557403, now seen corresponding path program 39 times [2024-06-04 14:52:57,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:52:57,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866358869] [2024-06-04 14:52:57,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:52:57,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:52:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:52:59,136 INFO 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 14:52:59,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:52:59,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866358869] [2024-06-04 14:52:59,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866358869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:52:59,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:52:59,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:52:59,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655722297] [2024-06-04 14:52:59,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:52:59,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:52:59,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:52:59,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:52:59,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:52:59,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:52:59,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 477 transitions, 5133 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:52:59,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:52:59,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:52:59,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:00,127 INFO L124 PetriNetUnfolderBase]: 1332/2533 cut-off events. [2024-06-04 14:53:00,128 INFO L125 PetriNetUnfolderBase]: For 873131/873131 co-relation queries the response was YES. [2024-06-04 14:53:00,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21283 conditions, 2533 events. 1332/2533 cut-off events. For 873131/873131 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 16613 event pairs, 209 based on Foata normal form. 8/2540 useless extension candidates. Maximal degree in co-relation 21059. Up to 1528 conditions per place. [2024-06-04 14:53:00,173 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 334 selfloop transitions, 161 changer transitions 9/506 dead transitions. [2024-06-04 14:53:00,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 506 transitions, 6687 flow [2024-06-04 14:53:00,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:53:00,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:53:00,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 172 transitions. [2024-06-04 14:53:00,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40093240093240096 [2024-06-04 14:53:00,175 INFO L175 Difference]: Start difference. First operand has 549 places, 477 transitions, 5133 flow. Second operand 13 states and 172 transitions. [2024-06-04 14:53:00,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 506 transitions, 6687 flow [2024-06-04 14:53:03,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 506 transitions, 6389 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 14:53:03,753 INFO L231 Difference]: Finished difference. Result has 547 places, 473 transitions, 5119 flow [2024-06-04 14:53:03,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4839, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5119, PETRI_PLACES=547, PETRI_TRANSITIONS=473} [2024-06-04 14:53:03,754 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 515 predicate places. [2024-06-04 14:53:03,754 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 473 transitions, 5119 flow [2024-06-04 14:53:03,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:03,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:53:03,754 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 14:53:03,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2024-06-04 14:53:03,754 INFO L420 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:53:03,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:53:03,755 INFO L85 PathProgramCache]: Analyzing trace with hash -696803033, now seen corresponding path program 22 times [2024-06-04 14:53:03,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:53:03,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681467773] [2024-06-04 14:53:03,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:53:03,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:53:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:53:04,913 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 14:53:04,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:53:04,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681467773] [2024-06-04 14:53:04,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681467773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:53:04,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:53:04,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:53:04,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671458749] [2024-06-04 14:53:04,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:53:04,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:53:04,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:53:04,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:53:04,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:53:05,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:53:05,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 473 transitions, 5119 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:05,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:53:05,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:53:05,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:06,068 INFO L124 PetriNetUnfolderBase]: 1367/2610 cut-off events. [2024-06-04 14:53:06,068 INFO L125 PetriNetUnfolderBase]: For 1093141/1093141 co-relation queries the response was YES. [2024-06-04 14:53:06,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24586 conditions, 2610 events. 1367/2610 cut-off events. For 1093141/1093141 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 17205 event pairs, 243 based on Foata normal form. 8/2617 useless extension candidates. Maximal degree in co-relation 24363. Up to 1626 conditions per place. [2024-06-04 14:53:06,106 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 350 selfloop transitions, 141 changer transitions 8/501 dead transitions. [2024-06-04 14:53:06,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 501 transitions, 6693 flow [2024-06-04 14:53:06,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 14:53:06,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 14:53:06,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-04 14:53:06,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916083916083916 [2024-06-04 14:53:06,107 INFO L175 Difference]: Start difference. First operand has 547 places, 473 transitions, 5119 flow. Second operand 13 states and 168 transitions. [2024-06-04 14:53:06,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 501 transitions, 6693 flow [2024-06-04 14:53:10,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 501 transitions, 6367 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 14:53:10,978 INFO L231 Difference]: Finished difference. Result has 546 places, 470 transitions, 5043 flow [2024-06-04 14:53:10,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4797, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5043, PETRI_PLACES=546, PETRI_TRANSITIONS=470} [2024-06-04 14:53:10,979 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 514 predicate places. [2024-06-04 14:53:10,979 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 470 transitions, 5043 flow [2024-06-04 14:53:10,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:10,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:53:10,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:53:10,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2024-06-04 14:53:10,980 INFO L420 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:53:10,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:53:10,980 INFO L85 PathProgramCache]: Analyzing trace with hash -696514733, now seen corresponding path program 23 times [2024-06-04 14:53:10,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:53:10,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493006641] [2024-06-04 14:53:10,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:53:10,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:53:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:53:12,167 INFO 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 14:53:12,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:53:12,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493006641] [2024-06-04 14:53:12,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493006641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:53:12,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:53:12,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 14:53:12,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961846] [2024-06-04 14:53:12,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:53:12,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 14:53:12,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:53:12,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 14:53:12,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-06-04 14:53:12,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-04 14:53:12,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 470 transitions, 5043 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:53:12,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:53:12,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-04 14:53:12,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:53:13,046 INFO L124 PetriNetUnfolderBase]: 1358/2591 cut-off events. [2024-06-04 14:53:13,046 INFO L125 PetriNetUnfolderBase]: For 1030851/1030851 co-relation queries the response was YES. [2024-06-04 14:53:13,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24795 conditions, 2591 events. 1358/2591 cut-off events. For 1030851/1030851 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 17054 event pairs, 256 based on Foata normal form. 2/2592 useless extension candidates. Maximal degree in co-relation 24573. Up to 1696 conditions per place. [2024-06-04 14:53:13,090 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 346 selfloop transitions, 143 changer transitions 0/491 dead transitions. [2024-06-04 14:53:13,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 491 transitions, 6499 flow [2024-06-04 14:53:13,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 14:53:13,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 14:53:13,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 14:53:13,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-04 14:53:13,091 INFO L175 Difference]: Start difference. First operand has 546 places, 470 transitions, 5043 flow. Second operand 12 states and 152 transitions. [2024-06-04 14:53:13,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 491 transitions, 6499 flow Killed by 15